diff options
Diffstat (limited to 'school/node_modules/pako/dist')
| -rw-r--r-- | school/node_modules/pako/dist/pako.js | 6818 | ||||
| -rw-r--r-- | school/node_modules/pako/dist/pako.min.js | 1 | ||||
| -rw-r--r-- | school/node_modules/pako/dist/pako_deflate.js | 3997 | ||||
| -rw-r--r-- | school/node_modules/pako/dist/pako_deflate.min.js | 1 | ||||
| -rw-r--r-- | school/node_modules/pako/dist/pako_inflate.js | 3300 | ||||
| -rw-r--r-- | school/node_modules/pako/dist/pako_inflate.min.js | 1 |
6 files changed, 0 insertions, 14118 deletions
diff --git a/school/node_modules/pako/dist/pako.js b/school/node_modules/pako/dist/pako.js deleted file mode 100644 index 9ab7c68..0000000 --- a/school/node_modules/pako/dist/pako.js +++ /dev/null @@ -1,6818 +0,0 @@ -/* pako 1.0.11 nodeca/pako */(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.pako = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){ -'use strict'; - - -var zlib_deflate = require('./zlib/deflate'); -var utils = require('./utils/common'); -var strings = require('./utils/strings'); -var msg = require('./zlib/messages'); -var ZStream = require('./zlib/zstream'); - -var toString = Object.prototype.toString; - -/* Public constants ==========================================================*/ -/* ===========================================================================*/ - -var Z_NO_FLUSH = 0; -var Z_FINISH = 4; - -var Z_OK = 0; -var Z_STREAM_END = 1; -var Z_SYNC_FLUSH = 2; - -var Z_DEFAULT_COMPRESSION = -1; - -var Z_DEFAULT_STRATEGY = 0; - -var Z_DEFLATED = 8; - -/* ===========================================================================*/ - - -/** - * class Deflate - * - * Generic JS-style wrapper for zlib calls. If you don't need - * streaming behaviour - use more simple functions: [[deflate]], - * [[deflateRaw]] and [[gzip]]. - **/ - -/* internal - * Deflate.chunks -> Array - * - * Chunks of output data, if [[Deflate#onData]] not overridden. - **/ - -/** - * Deflate.result -> Uint8Array|Array - * - * Compressed result, generated by default [[Deflate#onData]] - * and [[Deflate#onEnd]] handlers. Filled after you push last chunk - * (call [[Deflate#push]] with `Z_FINISH` / `true` param) or if you - * push a chunk with explicit flush (call [[Deflate#push]] with - * `Z_SYNC_FLUSH` param). - **/ - -/** - * Deflate.err -> Number - * - * Error code after deflate finished. 0 (Z_OK) on success. - * You will not need it in real life, because deflate errors - * are possible only on wrong options or bad `onData` / `onEnd` - * custom handlers. - **/ - -/** - * Deflate.msg -> String - * - * Error message, if [[Deflate.err]] != 0 - **/ - - -/** - * new Deflate(options) - * - options (Object): zlib deflate options. - * - * Creates new deflator instance with specified params. Throws exception - * on bad params. Supported options: - * - * - `level` - * - `windowBits` - * - `memLevel` - * - `strategy` - * - `dictionary` - * - * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced) - * for more information on these. - * - * Additional options, for internal needs: - * - * - `chunkSize` - size of generated data chunks (16K by default) - * - `raw` (Boolean) - do raw deflate - * - `gzip` (Boolean) - create gzip wrapper - * - `to` (String) - if equal to 'string', then result will be "binary string" - * (each char code [0..255]) - * - `header` (Object) - custom header for gzip - * - `text` (Boolean) - true if compressed data believed to be text - * - `time` (Number) - modification time, unix timestamp - * - `os` (Number) - operation system code - * - `extra` (Array) - array of bytes with extra data (max 65536) - * - `name` (String) - file name (binary string) - * - `comment` (String) - comment (binary string) - * - `hcrc` (Boolean) - true if header crc should be added - * - * ##### Example: - * - * ```javascript - * var pako = require('pako') - * , chunk1 = Uint8Array([1,2,3,4,5,6,7,8,9]) - * , chunk2 = Uint8Array([10,11,12,13,14,15,16,17,18,19]); - * - * var deflate = new pako.Deflate({ level: 3}); - * - * deflate.push(chunk1, false); - * deflate.push(chunk2, true); // true -> last chunk - * - * if (deflate.err) { throw new Error(deflate.err); } - * - * console.log(deflate.result); - * ``` - **/ -function Deflate(options) { - if (!(this instanceof Deflate)) return new Deflate(options); - - this.options = utils.assign({ - level: Z_DEFAULT_COMPRESSION, - method: Z_DEFLATED, - chunkSize: 16384, - windowBits: 15, - memLevel: 8, - strategy: Z_DEFAULT_STRATEGY, - to: '' - }, options || {}); - - var opt = this.options; - - if (opt.raw && (opt.windowBits > 0)) { - opt.windowBits = -opt.windowBits; - } - - else if (opt.gzip && (opt.windowBits > 0) && (opt.windowBits < 16)) { - opt.windowBits += 16; - } - - this.err = 0; // error code, if happens (0 = Z_OK) - this.msg = ''; // error message - this.ended = false; // used to avoid multiple onEnd() calls - this.chunks = []; // chunks of compressed data - - this.strm = new ZStream(); - this.strm.avail_out = 0; - - var status = zlib_deflate.deflateInit2( - this.strm, - opt.level, - opt.method, - opt.windowBits, - opt.memLevel, - opt.strategy - ); - - if (status !== Z_OK) { - throw new Error(msg[status]); - } - - if (opt.header) { - zlib_deflate.deflateSetHeader(this.strm, opt.header); - } - - if (opt.dictionary) { - var dict; - // Convert data if needed - if (typeof opt.dictionary === 'string') { - // If we need to compress text, change encoding to utf8. - dict = strings.string2buf(opt.dictionary); - } else if (toString.call(opt.dictionary) === '[object ArrayBuffer]') { - dict = new Uint8Array(opt.dictionary); - } else { - dict = opt.dictionary; - } - - status = zlib_deflate.deflateSetDictionary(this.strm, dict); - - if (status !== Z_OK) { - throw new Error(msg[status]); - } - - this._dict_set = true; - } -} - -/** - * Deflate#push(data[, mode]) -> Boolean - * - data (Uint8Array|Array|ArrayBuffer|String): input data. Strings will be - * converted to utf8 byte sequence. - * - mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE modes. - * See constants. Skipped or `false` means Z_NO_FLUSH, `true` means Z_FINISH. - * - * Sends input data to deflate pipe, generating [[Deflate#onData]] calls with - * new compressed chunks. Returns `true` on success. The last data block must have - * mode Z_FINISH (or `true`). That will flush internal pending buffers and call - * [[Deflate#onEnd]]. For interim explicit flushes (without ending the stream) you - * can use mode Z_SYNC_FLUSH, keeping the compression context. - * - * On fail call [[Deflate#onEnd]] with error code and return false. - * - * We strongly recommend to use `Uint8Array` on input for best speed (output - * array format is detected automatically). Also, don't skip last param and always - * use the same type in your code (boolean or number). That will improve JS speed. - * - * For regular `Array`-s make sure all elements are [0..255]. - * - * ##### Example - * - * ```javascript - * push(chunk, false); // push one of data chunks - * ... - * push(chunk, true); // push last chunk - * ``` - **/ -Deflate.prototype.push = function (data, mode) { - var strm = this.strm; - var chunkSize = this.options.chunkSize; - var status, _mode; - - if (this.ended) { return false; } - - _mode = (mode === ~~mode) ? mode : ((mode === true) ? Z_FINISH : Z_NO_FLUSH); - - // Convert data if needed - if (typeof data === 'string') { - // If we need to compress text, change encoding to utf8. - strm.input = strings.string2buf(data); - } else if (toString.call(data) === '[object ArrayBuffer]') { - strm.input = new Uint8Array(data); - } else { - strm.input = data; - } - - strm.next_in = 0; - strm.avail_in = strm.input.length; - - do { - if (strm.avail_out === 0) { - strm.output = new utils.Buf8(chunkSize); - strm.next_out = 0; - strm.avail_out = chunkSize; - } - status = zlib_deflate.deflate(strm, _mode); /* no bad return value */ - - if (status !== Z_STREAM_END && status !== Z_OK) { - this.onEnd(status); - this.ended = true; - return false; - } - if (strm.avail_out === 0 || (strm.avail_in === 0 && (_mode === Z_FINISH || _mode === Z_SYNC_FLUSH))) { - if (this.options.to === 'string') { - this.onData(strings.buf2binstring(utils.shrinkBuf(strm.output, strm.next_out))); - } else { - this.onData(utils.shrinkBuf(strm.output, strm.next_out)); - } - } - } while ((strm.avail_in > 0 || strm.avail_out === 0) && status !== Z_STREAM_END); - - // Finalize on the last chunk. - if (_mode === Z_FINISH) { - status = zlib_deflate.deflateEnd(this.strm); - this.onEnd(status); - this.ended = true; - return status === Z_OK; - } - - // callback interim results if Z_SYNC_FLUSH. - if (_mode === Z_SYNC_FLUSH) { - this.onEnd(Z_OK); - strm.avail_out = 0; - return true; - } - - return true; -}; - - -/** - * Deflate#onData(chunk) -> Void - * - chunk (Uint8Array|Array|String): output data. Type of array depends - * on js engine support. When string output requested, each chunk - * will be string. - * - * By default, stores data blocks in `chunks[]` property and glue - * those in `onEnd`. Override this handler, if you need another behaviour. - **/ -Deflate.prototype.onData = function (chunk) { - this.chunks.push(chunk); -}; - - -/** - * Deflate#onEnd(status) -> Void - * - status (Number): deflate status. 0 (Z_OK) on success, - * other if not. - * - * Called once after you tell deflate that the input stream is - * complete (Z_FINISH) or should be flushed (Z_SYNC_FLUSH) - * or if an error happened. By default - join collected chunks, - * free memory and fill `results` / `err` properties. - **/ -Deflate.prototype.onEnd = function (status) { - // On success - join - if (status === Z_OK) { - if (this.options.to === 'string') { - this.result = this.chunks.join(''); - } else { - this.result = utils.flattenChunks(this.chunks); - } - } - this.chunks = []; - this.err = status; - this.msg = this.strm.msg; -}; - - -/** - * deflate(data[, options]) -> Uint8Array|Array|String - * - data (Uint8Array|Array|String): input data to compress. - * - options (Object): zlib deflate options. - * - * Compress `data` with deflate algorithm and `options`. - * - * Supported options are: - * - * - level - * - windowBits - * - memLevel - * - strategy - * - dictionary - * - * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced) - * for more information on these. - * - * Sugar (options): - * - * - `raw` (Boolean) - say that we work with raw stream, if you don't wish to specify - * negative windowBits implicitly. - * - `to` (String) - if equal to 'string', then result will be "binary string" - * (each char code [0..255]) - * - * ##### Example: - * - * ```javascript - * var pako = require('pako') - * , data = Uint8Array([1,2,3,4,5,6,7,8,9]); - * - * console.log(pako.deflate(data)); - * ``` - **/ -function deflate(input, options) { - var deflator = new Deflate(options); - - deflator.push(input, true); - - // That will never happens, if you don't cheat with options :) - if (deflator.err) { throw deflator.msg || msg[deflator.err]; } - - return deflator.result; -} - - -/** - * deflateRaw(data[, options]) -> Uint8Array|Array|String - * - data (Uint8Array|Array|String): input data to compress. - * - options (Object): zlib deflate options. - * - * The same as [[deflate]], but creates raw data, without wrapper - * (header and adler32 crc). - **/ -function deflateRaw(input, options) { - options = options || {}; - options.raw = true; - return deflate(input, options); -} - - -/** - * gzip(data[, options]) -> Uint8Array|Array|String - * - data (Uint8Array|Array|String): input data to compress. - * - options (Object): zlib deflate options. - * - * The same as [[deflate]], but create gzip wrapper instead of - * deflate one. - **/ -function gzip(input, options) { - options = options || {}; - options.gzip = true; - return deflate(input, options); -} - - -exports.Deflate = Deflate; -exports.deflate = deflate; -exports.deflateRaw = deflateRaw; -exports.gzip = gzip; - -},{"./utils/common":3,"./utils/strings":4,"./zlib/deflate":8,"./zlib/messages":13,"./zlib/zstream":15}],2:[function(require,module,exports){ -'use strict'; - - -var zlib_inflate = require('./zlib/inflate'); -var utils = require('./utils/common'); -var strings = require('./utils/strings'); -var c = require('./zlib/constants'); -var msg = require('./zlib/messages'); -var ZStream = require('./zlib/zstream'); -var GZheader = require('./zlib/gzheader'); - -var toString = Object.prototype.toString; - -/** - * class Inflate - * - * Generic JS-style wrapper for zlib calls. If you don't need - * streaming behaviour - use more simple functions: [[inflate]] - * and [[inflateRaw]]. - **/ - -/* internal - * inflate.chunks -> Array - * - * Chunks of output data, if [[Inflate#onData]] not overridden. - **/ - -/** - * Inflate.result -> Uint8Array|Array|String - * - * Uncompressed result, generated by default [[Inflate#onData]] - * and [[Inflate#onEnd]] handlers. Filled after you push last chunk - * (call [[Inflate#push]] with `Z_FINISH` / `true` param) or if you - * push a chunk with explicit flush (call [[Inflate#push]] with - * `Z_SYNC_FLUSH` param). - **/ - -/** - * Inflate.err -> Number - * - * Error code after inflate finished. 0 (Z_OK) on success. - * Should be checked if broken data possible. - **/ - -/** - * Inflate.msg -> String - * - * Error message, if [[Inflate.err]] != 0 - **/ - - -/** - * new Inflate(options) - * - options (Object): zlib inflate options. - * - * Creates new inflator instance with specified params. Throws exception - * on bad params. Supported options: - * - * - `windowBits` - * - `dictionary` - * - * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced) - * for more information on these. - * - * Additional options, for internal needs: - * - * - `chunkSize` - size of generated data chunks (16K by default) - * - `raw` (Boolean) - do raw inflate - * - `to` (String) - if equal to 'string', then result will be converted - * from utf8 to utf16 (javascript) string. When string output requested, - * chunk length can differ from `chunkSize`, depending on content. - * - * By default, when no options set, autodetect deflate/gzip data format via - * wrapper header. - * - * ##### Example: - * - * ```javascript - * var pako = require('pako') - * , chunk1 = Uint8Array([1,2,3,4,5,6,7,8,9]) - * , chunk2 = Uint8Array([10,11,12,13,14,15,16,17,18,19]); - * - * var inflate = new pako.Inflate({ level: 3}); - * - * inflate.push(chunk1, false); - * inflate.push(chunk2, true); // true -> last chunk - * - * if (inflate.err) { throw new Error(inflate.err); } - * - * console.log(inflate.result); - * ``` - **/ -function Inflate(options) { - if (!(this instanceof Inflate)) return new Inflate(options); - - this.options = utils.assign({ - chunkSize: 16384, - windowBits: 0, - to: '' - }, options || {}); - - var opt = this.options; - - // Force window size for `raw` data, if not set directly, - // because we have no header for autodetect. - if (opt.raw && (opt.windowBits >= 0) && (opt.windowBits < 16)) { - opt.windowBits = -opt.windowBits; - if (opt.windowBits === 0) { opt.windowBits = -15; } - } - - // If `windowBits` not defined (and mode not raw) - set autodetect flag for gzip/deflate - if ((opt.windowBits >= 0) && (opt.windowBits < 16) && - !(options && options.windowBits)) { - opt.windowBits += 32; - } - - // Gzip header has no info about windows size, we can do autodetect only - // for deflate. So, if window size not set, force it to max when gzip possible - if ((opt.windowBits > 15) && (opt.windowBits < 48)) { - // bit 3 (16) -> gzipped data - // bit 4 (32) -> autodetect gzip/deflate - if ((opt.windowBits & 15) === 0) { - opt.windowBits |= 15; - } - } - - this.err = 0; // error code, if happens (0 = Z_OK) - this.msg = ''; // error message - this.ended = false; // used to avoid multiple onEnd() calls - this.chunks = []; // chunks of compressed data - - this.strm = new ZStream(); - this.strm.avail_out = 0; - - var status = zlib_inflate.inflateInit2( - this.strm, - opt.windowBits - ); - - if (status !== c.Z_OK) { - throw new Error(msg[status]); - } - - this.header = new GZheader(); - - zlib_inflate.inflateGetHeader(this.strm, this.header); - - // Setup dictionary - if (opt.dictionary) { - // Convert data if needed - if (typeof opt.dictionary === 'string') { - opt.dictionary = strings.string2buf(opt.dictionary); - } else if (toString.call(opt.dictionary) === '[object ArrayBuffer]') { - opt.dictionary = new Uint8Array(opt.dictionary); - } - if (opt.raw) { //In raw mode we need to set the dictionary early - status = zlib_inflate.inflateSetDictionary(this.strm, opt.dictionary); - if (status !== c.Z_OK) { - throw new Error(msg[status]); - } - } - } -} - -/** - * Inflate#push(data[, mode]) -> Boolean - * - data (Uint8Array|Array|ArrayBuffer|String): input data - * - mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE modes. - * See constants. Skipped or `false` means Z_NO_FLUSH, `true` means Z_FINISH. - * - * Sends input data to inflate pipe, generating [[Inflate#onData]] calls with - * new output chunks. Returns `true` on success. The last data block must have - * mode Z_FINISH (or `true`). That will flush internal pending buffers and call - * [[Inflate#onEnd]]. For interim explicit flushes (without ending the stream) you - * can use mode Z_SYNC_FLUSH, keeping the decompression context. - * - * On fail call [[Inflate#onEnd]] with error code and return false. - * - * We strongly recommend to use `Uint8Array` on input for best speed (output - * format is detected automatically). Also, don't skip last param and always - * use the same type in your code (boolean or number). That will improve JS speed. - * - * For regular `Array`-s make sure all elements are [0..255]. - * - * ##### Example - * - * ```javascript - * push(chunk, false); // push one of data chunks - * ... - * push(chunk, true); // push last chunk - * ``` - **/ -Inflate.prototype.push = function (data, mode) { - var strm = this.strm; - var chunkSize = this.options.chunkSize; - var dictionary = this.options.dictionary; - var status, _mode; - var next_out_utf8, tail, utf8str; - - // Flag to properly process Z_BUF_ERROR on testing inflate call - // when we check that all output data was flushed. - var allowBufError = false; - - if (this.ended) { return false; } - _mode = (mode === ~~mode) ? mode : ((mode === true) ? c.Z_FINISH : c.Z_NO_FLUSH); - - // Convert data if needed - if (typeof data === 'string') { - // Only binary strings can be decompressed on practice - strm.input = strings.binstring2buf(data); - } else if (toString.call(data) === '[object ArrayBuffer]') { - strm.input = new Uint8Array(data); - } else { - strm.input = data; - } - - strm.next_in = 0; - strm.avail_in = strm.input.length; - - do { - if (strm.avail_out === 0) { - strm.output = new utils.Buf8(chunkSize); - strm.next_out = 0; - strm.avail_out = chunkSize; - } - - status = zlib_inflate.inflate(strm, c.Z_NO_FLUSH); /* no bad return value */ - - if (status === c.Z_NEED_DICT && dictionary) { - status = zlib_inflate.inflateSetDictionary(this.strm, dictionary); - } - - if (status === c.Z_BUF_ERROR && allowBufError === true) { - status = c.Z_OK; - allowBufError = false; - } - - if (status !== c.Z_STREAM_END && status !== c.Z_OK) { - this.onEnd(status); - this.ended = true; - return false; - } - - if (strm.next_out) { - if (strm.avail_out === 0 || status === c.Z_STREAM_END || (strm.avail_in === 0 && (_mode === c.Z_FINISH || _mode === c.Z_SYNC_FLUSH))) { - - if (this.options.to === 'string') { - - next_out_utf8 = strings.utf8border(strm.output, strm.next_out); - - tail = strm.next_out - next_out_utf8; - utf8str = strings.buf2string(strm.output, next_out_utf8); - - // move tail - strm.next_out = tail; - strm.avail_out = chunkSize - tail; - if (tail) { utils.arraySet(strm.output, strm.output, next_out_utf8, tail, 0); } - - this.onData(utf8str); - - } else { - this.onData(utils.shrinkBuf(strm.output, strm.next_out)); - } - } - } - - // When no more input data, we should check that internal inflate buffers - // are flushed. The only way to do it when avail_out = 0 - run one more - // inflate pass. But if output data not exists, inflate return Z_BUF_ERROR. - // Here we set flag to process this error properly. - // - // NOTE. Deflate does not return error in this case and does not needs such - // logic. - if (strm.avail_in === 0 && strm.avail_out === 0) { - allowBufError = true; - } - - } while ((strm.avail_in > 0 || strm.avail_out === 0) && status !== c.Z_STREAM_END); - - if (status === c.Z_STREAM_END) { - _mode = c.Z_FINISH; - } - - // Finalize on the last chunk. - if (_mode === c.Z_FINISH) { - status = zlib_inflate.inflateEnd(this.strm); - this.onEnd(status); - this.ended = true; - return status === c.Z_OK; - } - - // callback interim results if Z_SYNC_FLUSH. - if (_mode === c.Z_SYNC_FLUSH) { - this.onEnd(c.Z_OK); - strm.avail_out = 0; - return true; - } - - return true; -}; - - -/** - * Inflate#onData(chunk) -> Void - * - chunk (Uint8Array|Array|String): output data. Type of array depends - * on js engine support. When string output requested, each chunk - * will be string. - * - * By default, stores data blocks in `chunks[]` property and glue - * those in `onEnd`. Override this handler, if you need another behaviour. - **/ -Inflate.prototype.onData = function (chunk) { - this.chunks.push(chunk); -}; - - -/** - * Inflate#onEnd(status) -> Void - * - status (Number): inflate status. 0 (Z_OK) on success, - * other if not. - * - * Called either after you tell inflate that the input stream is - * complete (Z_FINISH) or should be flushed (Z_SYNC_FLUSH) - * or if an error happened. By default - join collected chunks, - * free memory and fill `results` / `err` properties. - **/ -Inflate.prototype.onEnd = function (status) { - // On success - join - if (status === c.Z_OK) { - if (this.options.to === 'string') { - // Glue & convert here, until we teach pako to send - // utf8 aligned strings to onData - this.result = this.chunks.join(''); - } else { - this.result = utils.flattenChunks(this.chunks); - } - } - this.chunks = []; - this.err = status; - this.msg = this.strm.msg; -}; - - -/** - * inflate(data[, options]) -> Uint8Array|Array|String - * - data (Uint8Array|Array|String): input data to decompress. - * - options (Object): zlib inflate options. - * - * Decompress `data` with inflate/ungzip and `options`. Autodetect - * format via wrapper header by default. That's why we don't provide - * separate `ungzip` method. - * - * Supported options are: - * - * - windowBits - * - * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced) - * for more information. - * - * Sugar (options): - * - * - `raw` (Boolean) - say that we work with raw stream, if you don't wish to specify - * negative windowBits implicitly. - * - `to` (String) - if equal to 'string', then result will be converted - * from utf8 to utf16 (javascript) string. When string output requested, - * chunk length can differ from `chunkSize`, depending on content. - * - * - * ##### Example: - * - * ```javascript - * var pako = require('pako') - * , input = pako.deflate([1,2,3,4,5,6,7,8,9]) - * , output; - * - * try { - * output = pako.inflate(input); - * } catch (err) - * console.log(err); - * } - * ``` - **/ -function inflate(input, options) { - var inflator = new Inflate(options); - - inflator.push(input, true); - - // That will never happens, if you don't cheat with options :) - if (inflator.err) { throw inflator.msg || msg[inflator.err]; } - - return inflator.result; -} - - -/** - * inflateRaw(data[, options]) -> Uint8Array|Array|String - * - data (Uint8Array|Array|String): input data to decompress. - * - options (Object): zlib inflate options. - * - * The same as [[inflate]], but creates raw data, without wrapper - * (header and adler32 crc). - **/ -function inflateRaw(input, options) { - options = options || {}; - options.raw = true; - return inflate(input, options); -} - - -/** - * ungzip(data[, options]) -> Uint8Array|Array|String - * - data (Uint8Array|Array|String): input data to decompress. - * - options (Object): zlib inflate options. - * - * Just shortcut to [[inflate]], because it autodetects format - * by header.content. Done for convenience. - **/ - - -exports.Inflate = Inflate; -exports.inflate = inflate; -exports.inflateRaw = inflateRaw; -exports.ungzip = inflate; - -},{"./utils/common":3,"./utils/strings":4,"./zlib/constants":6,"./zlib/gzheader":9,"./zlib/inflate":11,"./zlib/messages":13,"./zlib/zstream":15}],3:[function(require,module,exports){ -'use strict'; - - -var TYPED_OK = (typeof Uint8Array !== 'undefined') && - (typeof Uint16Array !== 'undefined') && - (typeof Int32Array !== 'undefined'); - -function _has(obj, key) { - return Object.prototype.hasOwnProperty.call(obj, key); -} - -exports.assign = function (obj /*from1, from2, from3, ...*/) { - var sources = Array.prototype.slice.call(arguments, 1); - while (sources.length) { - var source = sources.shift(); - if (!source) { continue; } - - if (typeof source !== 'object') { - throw new TypeError(source + 'must be non-object'); - } - - for (var p in source) { - if (_has(source, p)) { - obj[p] = source[p]; - } - } - } - - return obj; -}; - - -// reduce buffer size, avoiding mem copy -exports.shrinkBuf = function (buf, size) { - if (buf.length === size) { return buf; } - if (buf.subarray) { return buf.subarray(0, size); } - buf.length = size; - return buf; -}; - - -var fnTyped = { - arraySet: function (dest, src, src_offs, len, dest_offs) { - if (src.subarray && dest.subarray) { - dest.set(src.subarray(src_offs, src_offs + len), dest_offs); - return; - } - // Fallback to ordinary array - for (var i = 0; i < len; i++) { - dest[dest_offs + i] = src[src_offs + i]; - } - }, - // Join array of chunks to single array. - flattenChunks: function (chunks) { - var i, l, len, pos, chunk, result; - - // calculate data length - len = 0; - for (i = 0, l = chunks.length; i < l; i++) { - len += chunks[i].length; - } - - // join chunks - result = new Uint8Array(len); - pos = 0; - for (i = 0, l = chunks.length; i < l; i++) { - chunk = chunks[i]; - result.set(chunk, pos); - pos += chunk.length; - } - - return result; - } -}; - -var fnUntyped = { - arraySet: function (dest, src, src_offs, len, dest_offs) { - for (var i = 0; i < len; i++) { - dest[dest_offs + i] = src[src_offs + i]; - } - }, - // Join array of chunks to single array. - flattenChunks: function (chunks) { - return [].concat.apply([], chunks); - } -}; - - -// Enable/Disable typed arrays use, for testing -// -exports.setTyped = function (on) { - if (on) { - exports.Buf8 = Uint8Array; - exports.Buf16 = Uint16Array; - exports.Buf32 = Int32Array; - exports.assign(exports, fnTyped); - } else { - exports.Buf8 = Array; - exports.Buf16 = Array; - exports.Buf32 = Array; - exports.assign(exports, fnUntyped); - } -}; - -exports.setTyped(TYPED_OK); - -},{}],4:[function(require,module,exports){ -// String encode/decode helpers -'use strict'; - - -var utils = require('./common'); - - -// Quick check if we can use fast array to bin string conversion -// -// - apply(Array) can fail on Android 2.2 -// - apply(Uint8Array) can fail on iOS 5.1 Safari -// -var STR_APPLY_OK = true; -var STR_APPLY_UIA_OK = true; - -try { String.fromCharCode.apply(null, [ 0 ]); } catch (__) { STR_APPLY_OK = false; } -try { String.fromCharCode.apply(null, new Uint8Array(1)); } catch (__) { STR_APPLY_UIA_OK = false; } - - -// Table with utf8 lengths (calculated by first byte of sequence) -// Note, that 5 & 6-byte values and some 4-byte values can not be represented in JS, -// because max possible codepoint is 0x10ffff -var _utf8len = new utils.Buf8(256); -for (var q = 0; q < 256; q++) { - _utf8len[q] = (q >= 252 ? 6 : q >= 248 ? 5 : q >= 240 ? 4 : q >= 224 ? 3 : q >= 192 ? 2 : 1); -} -_utf8len[254] = _utf8len[254] = 1; // Invalid sequence start - - -// convert string to array (typed, when possible) -exports.string2buf = function (str) { - var buf, c, c2, m_pos, i, str_len = str.length, buf_len = 0; - - // count binary size - for (m_pos = 0; m_pos < str_len; m_pos++) { - c = str.charCodeAt(m_pos); - if ((c & 0xfc00) === 0xd800 && (m_pos + 1 < str_len)) { - c2 = str.charCodeAt(m_pos + 1); - if ((c2 & 0xfc00) === 0xdc00) { - c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00); - m_pos++; - } - } - buf_len += c < 0x80 ? 1 : c < 0x800 ? 2 : c < 0x10000 ? 3 : 4; - } - - // allocate buffer - buf = new utils.Buf8(buf_len); - - // convert - for (i = 0, m_pos = 0; i < buf_len; m_pos++) { - c = str.charCodeAt(m_pos); - if ((c & 0xfc00) === 0xd800 && (m_pos + 1 < str_len)) { - c2 = str.charCodeAt(m_pos + 1); - if ((c2 & 0xfc00) === 0xdc00) { - c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00); - m_pos++; - } - } - if (c < 0x80) { - /* one byte */ - buf[i++] = c; - } else if (c < 0x800) { - /* two bytes */ - buf[i++] = 0xC0 | (c >>> 6); - buf[i++] = 0x80 | (c & 0x3f); - } else if (c < 0x10000) { - /* three bytes */ - buf[i++] = 0xE0 | (c >>> 12); - buf[i++] = 0x80 | (c >>> 6 & 0x3f); - buf[i++] = 0x80 | (c & 0x3f); - } else { - /* four bytes */ - buf[i++] = 0xf0 | (c >>> 18); - buf[i++] = 0x80 | (c >>> 12 & 0x3f); - buf[i++] = 0x80 | (c >>> 6 & 0x3f); - buf[i++] = 0x80 | (c & 0x3f); - } - } - - return buf; -}; - -// Helper (used in 2 places) -function buf2binstring(buf, len) { - // On Chrome, the arguments in a function call that are allowed is `65534`. - // If the length of the buffer is smaller than that, we can use this optimization, - // otherwise we will take a slower path. - if (len < 65534) { - if ((buf.subarray && STR_APPLY_UIA_OK) || (!buf.subarray && STR_APPLY_OK)) { - return String.fromCharCode.apply(null, utils.shrinkBuf(buf, len)); - } - } - - var result = ''; - for (var i = 0; i < len; i++) { - result += String.fromCharCode(buf[i]); - } - return result; -} - - -// Convert byte array to binary string -exports.buf2binstring = function (buf) { - return buf2binstring(buf, buf.length); -}; - - -// Convert binary string (typed, when possible) -exports.binstring2buf = function (str) { - var buf = new utils.Buf8(str.length); - for (var i = 0, len = buf.length; i < len; i++) { - buf[i] = str.charCodeAt(i); - } - return buf; -}; - - -// convert array to string -exports.buf2string = function (buf, max) { - var i, out, c, c_len; - var len = max || buf.length; - - // Reserve max possible length (2 words per char) - // NB: by unknown reasons, Array is significantly faster for - // String.fromCharCode.apply than Uint16Array. - var utf16buf = new Array(len * 2); - - for (out = 0, i = 0; i < len;) { - c = buf[i++]; - // quick process ascii - if (c < 0x80) { utf16buf[out++] = c; continue; } - - c_len = _utf8len[c]; - // skip 5 & 6 byte codes - if (c_len > 4) { utf16buf[out++] = 0xfffd; i += c_len - 1; continue; } - - // apply mask on first byte - c &= c_len === 2 ? 0x1f : c_len === 3 ? 0x0f : 0x07; - // join the rest - while (c_len > 1 && i < len) { - c = (c << 6) | (buf[i++] & 0x3f); - c_len--; - } - - // terminated by end of string? - if (c_len > 1) { utf16buf[out++] = 0xfffd; continue; } - - if (c < 0x10000) { - utf16buf[out++] = c; - } else { - c -= 0x10000; - utf16buf[out++] = 0xd800 | ((c >> 10) & 0x3ff); - utf16buf[out++] = 0xdc00 | (c & 0x3ff); - } - } - - return buf2binstring(utf16buf, out); -}; - - -// Calculate max possible position in utf8 buffer, -// that will not break sequence. If that's not possible -// - (very small limits) return max size as is. -// -// buf[] - utf8 bytes array -// max - length limit (mandatory); -exports.utf8border = function (buf, max) { - var pos; - - max = max || buf.length; - if (max > buf.length) { max = buf.length; } - - // go back from last position, until start of sequence found - pos = max - 1; - while (pos >= 0 && (buf[pos] & 0xC0) === 0x80) { pos--; } - - // Very small and broken sequence, - // return max, because we should return something anyway. - if (pos < 0) { return max; } - - // If we came to start of buffer - that means buffer is too small, - // return max too. - if (pos === 0) { return max; } - - return (pos + _utf8len[buf[pos]] > max) ? pos : max; -}; - -},{"./common":3}],5:[function(require,module,exports){ -'use strict'; - -// Note: adler32 takes 12% for level 0 and 2% for level 6. -// It isn't worth it to make additional optimizations as in original. -// Small size is preferable. - -// (C) 1995-2013 Jean-loup Gailly and Mark Adler -// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would be -// appreciated but is not required. -// 2. Altered source versions must be plainly marked as such, and must not be -// misrepresented as being the original software. -// 3. This notice may not be removed or altered from any source distribution. - -function adler32(adler, buf, len, pos) { - var s1 = (adler & 0xffff) |0, - s2 = ((adler >>> 16) & 0xffff) |0, - n = 0; - - while (len !== 0) { - // Set limit ~ twice less than 5552, to keep - // s2 in 31-bits, because we force signed ints. - // in other case %= will fail. - n = len > 2000 ? 2000 : len; - len -= n; - - do { - s1 = (s1 + buf[pos++]) |0; - s2 = (s2 + s1) |0; - } while (--n); - - s1 %= 65521; - s2 %= 65521; - } - - return (s1 | (s2 << 16)) |0; -} - - -module.exports = adler32; - -},{}],6:[function(require,module,exports){ -'use strict'; - -// (C) 1995-2013 Jean-loup Gailly and Mark Adler -// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would be -// appreciated but is not required. -// 2. Altered source versions must be plainly marked as such, and must not be -// misrepresented as being the original software. -// 3. This notice may not be removed or altered from any source distribution. - -module.exports = { - - /* Allowed flush values; see deflate() and inflate() below for details */ - Z_NO_FLUSH: 0, - Z_PARTIAL_FLUSH: 1, - Z_SYNC_FLUSH: 2, - Z_FULL_FLUSH: 3, - Z_FINISH: 4, - Z_BLOCK: 5, - Z_TREES: 6, - - /* Return codes for the compression/decompression functions. Negative values - * are errors, positive values are used for special but normal events. - */ - Z_OK: 0, - Z_STREAM_END: 1, - Z_NEED_DICT: 2, - Z_ERRNO: -1, - Z_STREAM_ERROR: -2, - Z_DATA_ERROR: -3, - //Z_MEM_ERROR: -4, - Z_BUF_ERROR: -5, - //Z_VERSION_ERROR: -6, - - /* compression levels */ - Z_NO_COMPRESSION: 0, - Z_BEST_SPEED: 1, - Z_BEST_COMPRESSION: 9, - Z_DEFAULT_COMPRESSION: -1, - - - Z_FILTERED: 1, - Z_HUFFMAN_ONLY: 2, - Z_RLE: 3, - Z_FIXED: 4, - Z_DEFAULT_STRATEGY: 0, - - /* Possible values of the data_type field (though see inflate()) */ - Z_BINARY: 0, - Z_TEXT: 1, - //Z_ASCII: 1, // = Z_TEXT (deprecated) - Z_UNKNOWN: 2, - - /* The deflate compression method */ - Z_DEFLATED: 8 - //Z_NULL: null // Use -1 or null inline, depending on var type -}; - -},{}],7:[function(require,module,exports){ -'use strict'; - -// Note: we can't get significant speed boost here. -// So write code to minimize size - no pregenerated tables -// and array tools dependencies. - -// (C) 1995-2013 Jean-loup Gailly and Mark Adler -// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would be -// appreciated but is not required. -// 2. Altered source versions must be plainly marked as such, and must not be -// misrepresented as being the original software. -// 3. This notice may not be removed or altered from any source distribution. - -// Use ordinary array, since untyped makes no boost here -function makeTable() { - var c, table = []; - - for (var n = 0; n < 256; n++) { - c = n; - for (var k = 0; k < 8; k++) { - c = ((c & 1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1)); - } - table[n] = c; - } - - return table; -} - -// Create table on load. Just 255 signed longs. Not a problem. -var crcTable = makeTable(); - - -function crc32(crc, buf, len, pos) { - var t = crcTable, - end = pos + len; - - crc ^= -1; - - for (var i = pos; i < end; i++) { - crc = (crc >>> 8) ^ t[(crc ^ buf[i]) & 0xFF]; - } - - return (crc ^ (-1)); // >>> 0; -} - - -module.exports = crc32; - -},{}],8:[function(require,module,exports){ -'use strict'; - -// (C) 1995-2013 Jean-loup Gailly and Mark Adler -// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would be -// appreciated but is not required. -// 2. Altered source versions must be plainly marked as such, and must not be -// misrepresented as being the original software. -// 3. This notice may not be removed or altered from any source distribution. - -var utils = require('../utils/common'); -var trees = require('./trees'); -var adler32 = require('./adler32'); -var crc32 = require('./crc32'); -var msg = require('./messages'); - -/* Public constants ==========================================================*/ -/* ===========================================================================*/ - - -/* Allowed flush values; see deflate() and inflate() below for details */ -var Z_NO_FLUSH = 0; -var Z_PARTIAL_FLUSH = 1; -//var Z_SYNC_FLUSH = 2; -var Z_FULL_FLUSH = 3; -var Z_FINISH = 4; -var Z_BLOCK = 5; -//var Z_TREES = 6; - - -/* Return codes for the compression/decompression functions. Negative values - * are errors, positive values are used for special but normal events. - */ -var Z_OK = 0; -var Z_STREAM_END = 1; -//var Z_NEED_DICT = 2; -//var Z_ERRNO = -1; -var Z_STREAM_ERROR = -2; -var Z_DATA_ERROR = -3; -//var Z_MEM_ERROR = -4; -var Z_BUF_ERROR = -5; -//var Z_VERSION_ERROR = -6; - - -/* compression levels */ -//var Z_NO_COMPRESSION = 0; -//var Z_BEST_SPEED = 1; -//var Z_BEST_COMPRESSION = 9; -var Z_DEFAULT_COMPRESSION = -1; - - -var Z_FILTERED = 1; -var Z_HUFFMAN_ONLY = 2; -var Z_RLE = 3; -var Z_FIXED = 4; -var Z_DEFAULT_STRATEGY = 0; - -/* Possible values of the data_type field (though see inflate()) */ -//var Z_BINARY = 0; -//var Z_TEXT = 1; -//var Z_ASCII = 1; // = Z_TEXT -var Z_UNKNOWN = 2; - - -/* The deflate compression method */ -var Z_DEFLATED = 8; - -/*============================================================================*/ - - -var MAX_MEM_LEVEL = 9; -/* Maximum value for memLevel in deflateInit2 */ -var MAX_WBITS = 15; -/* 32K LZ77 window */ -var DEF_MEM_LEVEL = 8; - - -var LENGTH_CODES = 29; -/* number of length codes, not counting the special END_BLOCK code */ -var LITERALS = 256; -/* number of literal bytes 0..255 */ -var L_CODES = LITERALS + 1 + LENGTH_CODES; -/* number of Literal or Length codes, including the END_BLOCK code */ -var D_CODES = 30; -/* number of distance codes */ -var BL_CODES = 19; -/* number of codes used to transfer the bit lengths */ -var HEAP_SIZE = 2 * L_CODES + 1; -/* maximum heap size */ -var MAX_BITS = 15; -/* All codes must not exceed MAX_BITS bits */ - -var MIN_MATCH = 3; -var MAX_MATCH = 258; -var MIN_LOOKAHEAD = (MAX_MATCH + MIN_MATCH + 1); - -var PRESET_DICT = 0x20; - -var INIT_STATE = 42; -var EXTRA_STATE = 69; -var NAME_STATE = 73; -var COMMENT_STATE = 91; -var HCRC_STATE = 103; -var BUSY_STATE = 113; -var FINISH_STATE = 666; - -var BS_NEED_MORE = 1; /* block not completed, need more input or more output */ -var BS_BLOCK_DONE = 2; /* block flush performed */ -var BS_FINISH_STARTED = 3; /* finish started, need only more output at next deflate */ -var BS_FINISH_DONE = 4; /* finish done, accept no more input or output */ - -var OS_CODE = 0x03; // Unix :) . Don't detect, use this default. - -function err(strm, errorCode) { - strm.msg = msg[errorCode]; - return errorCode; -} - -function rank(f) { - return ((f) << 1) - ((f) > 4 ? 9 : 0); -} - -function zero(buf) { var len = buf.length; while (--len >= 0) { buf[len] = 0; } } - - -/* ========================================================================= - * Flush as much pending output as possible. All deflate() output goes - * through this function so some applications may wish to modify it - * to avoid allocating a large strm->output buffer and copying into it. - * (See also read_buf()). - */ -function flush_pending(strm) { - var s = strm.state; - - //_tr_flush_bits(s); - var len = s.pending; - if (len > strm.avail_out) { - len = strm.avail_out; - } - if (len === 0) { return; } - - utils.arraySet(strm.output, s.pending_buf, s.pending_out, len, strm.next_out); - strm.next_out += len; - s.pending_out += len; - strm.total_out += len; - strm.avail_out -= len; - s.pending -= len; - if (s.pending === 0) { - s.pending_out = 0; - } -} - - -function flush_block_only(s, last) { - trees._tr_flush_block(s, (s.block_start >= 0 ? s.block_start : -1), s.strstart - s.block_start, last); - s.block_start = s.strstart; - flush_pending(s.strm); -} - - -function put_byte(s, b) { - s.pending_buf[s.pending++] = b; -} - - -/* ========================================================================= - * Put a short in the pending buffer. The 16-bit value is put in MSB order. - * IN assertion: the stream state is correct and there is enough room in - * pending_buf. - */ -function putShortMSB(s, b) { -// put_byte(s, (Byte)(b >> 8)); -// put_byte(s, (Byte)(b & 0xff)); - s.pending_buf[s.pending++] = (b >>> 8) & 0xff; - s.pending_buf[s.pending++] = b & 0xff; -} - - -/* =========================================================================== - * Read a new buffer from the current input stream, update the adler32 - * and total number of bytes read. All deflate() input goes through - * this function so some applications may wish to modify it to avoid - * allocating a large strm->input buffer and copying from it. - * (See also flush_pending()). - */ -function read_buf(strm, buf, start, size) { - var len = strm.avail_in; - - if (len > size) { len = size; } - if (len === 0) { return 0; } - - strm.avail_in -= len; - - // zmemcpy(buf, strm->next_in, len); - utils.arraySet(buf, strm.input, strm.next_in, len, start); - if (strm.state.wrap === 1) { - strm.adler = adler32(strm.adler, buf, len, start); - } - - else if (strm.state.wrap === 2) { - strm.adler = crc32(strm.adler, buf, len, start); - } - - strm.next_in += len; - strm.total_in += len; - - return len; -} - - -/* =========================================================================== - * Set match_start to the longest match starting at the given string and - * return its length. Matches shorter or equal to prev_length are discarded, - * in which case the result is equal to prev_length and match_start is - * garbage. - * IN assertions: cur_match is the head of the hash chain for the current - * string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1 - * OUT assertion: the match length is not greater than s->lookahead. - */ -function longest_match(s, cur_match) { - var chain_length = s.max_chain_length; /* max hash chain length */ - var scan = s.strstart; /* current string */ - var match; /* matched string */ - var len; /* length of current match */ - var best_len = s.prev_length; /* best match length so far */ - var nice_match = s.nice_match; /* stop if match long enough */ - var limit = (s.strstart > (s.w_size - MIN_LOOKAHEAD)) ? - s.strstart - (s.w_size - MIN_LOOKAHEAD) : 0/*NIL*/; - - var _win = s.window; // shortcut - - var wmask = s.w_mask; - var prev = s.prev; - - /* Stop when cur_match becomes <= limit. To simplify the code, - * we prevent matches with the string of window index 0. - */ - - var strend = s.strstart + MAX_MATCH; - var scan_end1 = _win[scan + best_len - 1]; - var scan_end = _win[scan + best_len]; - - /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16. - * It is easy to get rid of this optimization if necessary. - */ - // Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever"); - - /* Do not waste too much time if we already have a good match: */ - if (s.prev_length >= s.good_match) { - chain_length >>= 2; - } - /* Do not look for matches beyond the end of the input. This is necessary - * to make deflate deterministic. - */ - if (nice_match > s.lookahead) { nice_match = s.lookahead; } - - // Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead"); - - do { - // Assert(cur_match < s->strstart, "no future"); - match = cur_match; - - /* Skip to next match if the match length cannot increase - * or if the match length is less than 2. Note that the checks below - * for insufficient lookahead only occur occasionally for performance - * reasons. Therefore uninitialized memory will be accessed, and - * conditional jumps will be made that depend on those values. - * However the length of the match is limited to the lookahead, so - * the output of deflate is not affected by the uninitialized values. - */ - - if (_win[match + best_len] !== scan_end || - _win[match + best_len - 1] !== scan_end1 || - _win[match] !== _win[scan] || - _win[++match] !== _win[scan + 1]) { - continue; - } - - /* The check at best_len-1 can be removed because it will be made - * again later. (This heuristic is not always a win.) - * It is not necessary to compare scan[2] and match[2] since they - * are always equal when the other bytes match, given that - * the hash keys are equal and that HASH_BITS >= 8. - */ - scan += 2; - match++; - // Assert(*scan == *match, "match[2]?"); - - /* We check for insufficient lookahead only every 8th comparison; - * the 256th check will be made at strstart+258. - */ - do { - /*jshint noempty:false*/ - } while (_win[++scan] === _win[++match] && _win[++scan] === _win[++match] && - _win[++scan] === _win[++match] && _win[++scan] === _win[++match] && - _win[++scan] === _win[++match] && _win[++scan] === _win[++match] && - _win[++scan] === _win[++match] && _win[++scan] === _win[++match] && - scan < strend); - - // Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan"); - - len = MAX_MATCH - (strend - scan); - scan = strend - MAX_MATCH; - - if (len > best_len) { - s.match_start = cur_match; - best_len = len; - if (len >= nice_match) { - break; - } - scan_end1 = _win[scan + best_len - 1]; - scan_end = _win[scan + best_len]; - } - } while ((cur_match = prev[cur_match & wmask]) > limit && --chain_length !== 0); - - if (best_len <= s.lookahead) { - return best_len; - } - return s.lookahead; -} - - -/* =========================================================================== - * Fill the window when the lookahead becomes insufficient. - * Updates strstart and lookahead. - * - * IN assertion: lookahead < MIN_LOOKAHEAD - * OUT assertions: strstart <= window_size-MIN_LOOKAHEAD - * At least one byte has been read, or avail_in == 0; reads are - * performed for at least two bytes (required for the zip translate_eol - * option -- not supported here). - */ -function fill_window(s) { - var _w_size = s.w_size; - var p, n, m, more, str; - - //Assert(s->lookahead < MIN_LOOKAHEAD, "already enough lookahead"); - - do { - more = s.window_size - s.lookahead - s.strstart; - - // JS ints have 32 bit, block below not needed - /* Deal with !@#$% 64K limit: */ - //if (sizeof(int) <= 2) { - // if (more == 0 && s->strstart == 0 && s->lookahead == 0) { - // more = wsize; - // - // } else if (more == (unsigned)(-1)) { - // /* Very unlikely, but possible on 16 bit machine if - // * strstart == 0 && lookahead == 1 (input done a byte at time) - // */ - // more--; - // } - //} - - - /* If the window is almost full and there is insufficient lookahead, - * move the upper half to the lower one to make room in the upper half. - */ - if (s.strstart >= _w_size + (_w_size - MIN_LOOKAHEAD)) { - - utils.arraySet(s.window, s.window, _w_size, _w_size, 0); - s.match_start -= _w_size; - s.strstart -= _w_size; - /* we now have strstart >= MAX_DIST */ - s.block_start -= _w_size; - - /* Slide the hash table (could be avoided with 32 bit values - at the expense of memory usage). We slide even when level == 0 - to keep the hash table consistent if we switch back to level > 0 - later. (Using level 0 permanently is not an optimal usage of - zlib, so we don't care about this pathological case.) - */ - - n = s.hash_size; - p = n; - do { - m = s.head[--p]; - s.head[p] = (m >= _w_size ? m - _w_size : 0); - } while (--n); - - n = _w_size; - p = n; - do { - m = s.prev[--p]; - s.prev[p] = (m >= _w_size ? m - _w_size : 0); - /* If n is not on any hash chain, prev[n] is garbage but - * its value will never be used. - */ - } while (--n); - - more += _w_size; - } - if (s.strm.avail_in === 0) { - break; - } - - /* If there was no sliding: - * strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 && - * more == window_size - lookahead - strstart - * => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1) - * => more >= window_size - 2*WSIZE + 2 - * In the BIG_MEM or MMAP case (not yet supported), - * window_size == input_size + MIN_LOOKAHEAD && - * strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD. - * Otherwise, window_size == 2*WSIZE so more >= 2. - * If there was sliding, more >= WSIZE. So in all cases, more >= 2. - */ - //Assert(more >= 2, "more < 2"); - n = read_buf(s.strm, s.window, s.strstart + s.lookahead, more); - s.lookahead += n; - - /* Initialize the hash value now that we have some input: */ - if (s.lookahead + s.insert >= MIN_MATCH) { - str = s.strstart - s.insert; - s.ins_h = s.window[str]; - - /* UPDATE_HASH(s, s->ins_h, s->window[str + 1]); */ - s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + 1]) & s.hash_mask; -//#if MIN_MATCH != 3 -// Call update_hash() MIN_MATCH-3 more times -//#endif - while (s.insert) { - /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */ - s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + MIN_MATCH - 1]) & s.hash_mask; - - s.prev[str & s.w_mask] = s.head[s.ins_h]; - s.head[s.ins_h] = str; - str++; - s.insert--; - if (s.lookahead + s.insert < MIN_MATCH) { - break; - } - } - } - /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage, - * but this is not important since only literal bytes will be emitted. - */ - - } while (s.lookahead < MIN_LOOKAHEAD && s.strm.avail_in !== 0); - - /* If the WIN_INIT bytes after the end of the current data have never been - * written, then zero those bytes in order to avoid memory check reports of - * the use of uninitialized (or uninitialised as Julian writes) bytes by - * the longest match routines. Update the high water mark for the next - * time through here. WIN_INIT is set to MAX_MATCH since the longest match - * routines allow scanning to strstart + MAX_MATCH, ignoring lookahead. - */ -// if (s.high_water < s.window_size) { -// var curr = s.strstart + s.lookahead; -// var init = 0; -// -// if (s.high_water < curr) { -// /* Previous high water mark below current data -- zero WIN_INIT -// * bytes or up to end of window, whichever is less. -// */ -// init = s.window_size - curr; -// if (init > WIN_INIT) -// init = WIN_INIT; -// zmemzero(s->window + curr, (unsigned)init); -// s->high_water = curr + init; -// } -// else if (s->high_water < (ulg)curr + WIN_INIT) { -// /* High water mark at or above current data, but below current data -// * plus WIN_INIT -- zero out to current data plus WIN_INIT, or up -// * to end of window, whichever is less. -// */ -// init = (ulg)curr + WIN_INIT - s->high_water; -// if (init > s->window_size - s->high_water) -// init = s->window_size - s->high_water; -// zmemzero(s->window + s->high_water, (unsigned)init); -// s->high_water += init; -// } -// } -// -// Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD, -// "not enough room for search"); -} - -/* =========================================================================== - * Copy without compression as much as possible from the input stream, return - * the current block state. - * This function does not insert new strings in the dictionary since - * uncompressible data is probably not useful. This function is used - * only for the level=0 compression option. - * NOTE: this function should be optimized to avoid extra copying from - * window to pending_buf. - */ -function deflate_stored(s, flush) { - /* Stored blocks are limited to 0xffff bytes, pending_buf is limited - * to pending_buf_size, and each stored block has a 5 byte header: - */ - var max_block_size = 0xffff; - - if (max_block_size > s.pending_buf_size - 5) { - max_block_size = s.pending_buf_size - 5; - } - - /* Copy as much as possible from input to output: */ - for (;;) { - /* Fill the window as much as possible: */ - if (s.lookahead <= 1) { - - //Assert(s->strstart < s->w_size+MAX_DIST(s) || - // s->block_start >= (long)s->w_size, "slide too late"); -// if (!(s.strstart < s.w_size + (s.w_size - MIN_LOOKAHEAD) || -// s.block_start >= s.w_size)) { -// throw new Error("slide too late"); -// } - - fill_window(s); - if (s.lookahead === 0 && flush === Z_NO_FLUSH) { - return BS_NEED_MORE; - } - - if (s.lookahead === 0) { - break; - } - /* flush the current block */ - } - //Assert(s->block_start >= 0L, "block gone"); -// if (s.block_start < 0) throw new Error("block gone"); - - s.strstart += s.lookahead; - s.lookahead = 0; - - /* Emit a stored block if pending_buf will be full: */ - var max_start = s.block_start + max_block_size; - - if (s.strstart === 0 || s.strstart >= max_start) { - /* strstart == 0 is possible when wraparound on 16-bit machine */ - s.lookahead = s.strstart - max_start; - s.strstart = max_start; - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - - - } - /* Flush if we may have to slide, otherwise block_start may become - * negative and the data will be gone: - */ - if (s.strstart - s.block_start >= (s.w_size - MIN_LOOKAHEAD)) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - } - - s.insert = 0; - - if (flush === Z_FINISH) { - /*** FLUSH_BLOCK(s, 1); ***/ - flush_block_only(s, true); - if (s.strm.avail_out === 0) { - return BS_FINISH_STARTED; - } - /***/ - return BS_FINISH_DONE; - } - - if (s.strstart > s.block_start) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - - return BS_NEED_MORE; -} - -/* =========================================================================== - * Compress as much as possible from the input stream, return the current - * block state. - * This function does not perform lazy evaluation of matches and inserts - * new strings in the dictionary only for unmatched strings or for short - * matches. It is used only for the fast compression options. - */ -function deflate_fast(s, flush) { - var hash_head; /* head of the hash chain */ - var bflush; /* set if current block must be flushed */ - - for (;;) { - /* Make sure that we always have enough lookahead, except - * at the end of the input file. We need MAX_MATCH bytes - * for the next match, plus MIN_MATCH bytes to insert the - * string following the next match. - */ - if (s.lookahead < MIN_LOOKAHEAD) { - fill_window(s); - if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH) { - return BS_NEED_MORE; - } - if (s.lookahead === 0) { - break; /* flush the current block */ - } - } - - /* Insert the string window[strstart .. strstart+2] in the - * dictionary, and set hash_head to the head of the hash chain: - */ - hash_head = 0/*NIL*/; - if (s.lookahead >= MIN_MATCH) { - /*** INSERT_STRING(s, s.strstart, hash_head); ***/ - s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask; - hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h]; - s.head[s.ins_h] = s.strstart; - /***/ - } - - /* Find the longest match, discarding those <= prev_length. - * At this point we have always match_length < MIN_MATCH - */ - if (hash_head !== 0/*NIL*/ && ((s.strstart - hash_head) <= (s.w_size - MIN_LOOKAHEAD))) { - /* To simplify the code, we prevent matches with the string - * of window index 0 (in particular we have to avoid a match - * of the string with itself at the start of the input file). - */ - s.match_length = longest_match(s, hash_head); - /* longest_match() sets match_start */ - } - if (s.match_length >= MIN_MATCH) { - // check_match(s, s.strstart, s.match_start, s.match_length); // for debug only - - /*** _tr_tally_dist(s, s.strstart - s.match_start, - s.match_length - MIN_MATCH, bflush); ***/ - bflush = trees._tr_tally(s, s.strstart - s.match_start, s.match_length - MIN_MATCH); - - s.lookahead -= s.match_length; - - /* Insert new strings in the hash table only if the match length - * is not too large. This saves time but degrades compression. - */ - if (s.match_length <= s.max_lazy_match/*max_insert_length*/ && s.lookahead >= MIN_MATCH) { - s.match_length--; /* string at strstart already in table */ - do { - s.strstart++; - /*** INSERT_STRING(s, s.strstart, hash_head); ***/ - s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask; - hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h]; - s.head[s.ins_h] = s.strstart; - /***/ - /* strstart never exceeds WSIZE-MAX_MATCH, so there are - * always MIN_MATCH bytes ahead. - */ - } while (--s.match_length !== 0); - s.strstart++; - } else - { - s.strstart += s.match_length; - s.match_length = 0; - s.ins_h = s.window[s.strstart]; - /* UPDATE_HASH(s, s.ins_h, s.window[s.strstart+1]); */ - s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + 1]) & s.hash_mask; - -//#if MIN_MATCH != 3 -// Call UPDATE_HASH() MIN_MATCH-3 more times -//#endif - /* If lookahead < MIN_MATCH, ins_h is garbage, but it does not - * matter since it will be recomputed at next deflate call. - */ - } - } else { - /* No match, output a literal byte */ - //Tracevv((stderr,"%c", s.window[s.strstart])); - /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/ - bflush = trees._tr_tally(s, 0, s.window[s.strstart]); - - s.lookahead--; - s.strstart++; - } - if (bflush) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - } - s.insert = ((s.strstart < (MIN_MATCH - 1)) ? s.strstart : MIN_MATCH - 1); - if (flush === Z_FINISH) { - /*** FLUSH_BLOCK(s, 1); ***/ - flush_block_only(s, true); - if (s.strm.avail_out === 0) { - return BS_FINISH_STARTED; - } - /***/ - return BS_FINISH_DONE; - } - if (s.last_lit) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - return BS_BLOCK_DONE; -} - -/* =========================================================================== - * Same as above, but achieves better compression. We use a lazy - * evaluation for matches: a match is finally adopted only if there is - * no better match at the next window position. - */ -function deflate_slow(s, flush) { - var hash_head; /* head of hash chain */ - var bflush; /* set if current block must be flushed */ - - var max_insert; - - /* Process the input block. */ - for (;;) { - /* Make sure that we always have enough lookahead, except - * at the end of the input file. We need MAX_MATCH bytes - * for the next match, plus MIN_MATCH bytes to insert the - * string following the next match. - */ - if (s.lookahead < MIN_LOOKAHEAD) { - fill_window(s); - if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH) { - return BS_NEED_MORE; - } - if (s.lookahead === 0) { break; } /* flush the current block */ - } - - /* Insert the string window[strstart .. strstart+2] in the - * dictionary, and set hash_head to the head of the hash chain: - */ - hash_head = 0/*NIL*/; - if (s.lookahead >= MIN_MATCH) { - /*** INSERT_STRING(s, s.strstart, hash_head); ***/ - s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask; - hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h]; - s.head[s.ins_h] = s.strstart; - /***/ - } - - /* Find the longest match, discarding those <= prev_length. - */ - s.prev_length = s.match_length; - s.prev_match = s.match_start; - s.match_length = MIN_MATCH - 1; - - if (hash_head !== 0/*NIL*/ && s.prev_length < s.max_lazy_match && - s.strstart - hash_head <= (s.w_size - MIN_LOOKAHEAD)/*MAX_DIST(s)*/) { - /* To simplify the code, we prevent matches with the string - * of window index 0 (in particular we have to avoid a match - * of the string with itself at the start of the input file). - */ - s.match_length = longest_match(s, hash_head); - /* longest_match() sets match_start */ - - if (s.match_length <= 5 && - (s.strategy === Z_FILTERED || (s.match_length === MIN_MATCH && s.strstart - s.match_start > 4096/*TOO_FAR*/))) { - - /* If prev_match is also MIN_MATCH, match_start is garbage - * but we will ignore the current match anyway. - */ - s.match_length = MIN_MATCH - 1; - } - } - /* If there was a match at the previous step and the current - * match is not better, output the previous match: - */ - if (s.prev_length >= MIN_MATCH && s.match_length <= s.prev_length) { - max_insert = s.strstart + s.lookahead - MIN_MATCH; - /* Do not insert strings in hash table beyond this. */ - - //check_match(s, s.strstart-1, s.prev_match, s.prev_length); - - /***_tr_tally_dist(s, s.strstart - 1 - s.prev_match, - s.prev_length - MIN_MATCH, bflush);***/ - bflush = trees._tr_tally(s, s.strstart - 1 - s.prev_match, s.prev_length - MIN_MATCH); - /* Insert in hash table all strings up to the end of the match. - * strstart-1 and strstart are already inserted. If there is not - * enough lookahead, the last two strings are not inserted in - * the hash table. - */ - s.lookahead -= s.prev_length - 1; - s.prev_length -= 2; - do { - if (++s.strstart <= max_insert) { - /*** INSERT_STRING(s, s.strstart, hash_head); ***/ - s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask; - hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h]; - s.head[s.ins_h] = s.strstart; - /***/ - } - } while (--s.prev_length !== 0); - s.match_available = 0; - s.match_length = MIN_MATCH - 1; - s.strstart++; - - if (bflush) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - - } else if (s.match_available) { - /* If there was no match at the previous position, output a - * single literal. If there was a match but the current match - * is longer, truncate the previous match to a single literal. - */ - //Tracevv((stderr,"%c", s->window[s->strstart-1])); - /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/ - bflush = trees._tr_tally(s, 0, s.window[s.strstart - 1]); - - if (bflush) { - /*** FLUSH_BLOCK_ONLY(s, 0) ***/ - flush_block_only(s, false); - /***/ - } - s.strstart++; - s.lookahead--; - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - } else { - /* There is no previous match to compare with, wait for - * the next step to decide. - */ - s.match_available = 1; - s.strstart++; - s.lookahead--; - } - } - //Assert (flush != Z_NO_FLUSH, "no flush?"); - if (s.match_available) { - //Tracevv((stderr,"%c", s->window[s->strstart-1])); - /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/ - bflush = trees._tr_tally(s, 0, s.window[s.strstart - 1]); - - s.match_available = 0; - } - s.insert = s.strstart < MIN_MATCH - 1 ? s.strstart : MIN_MATCH - 1; - if (flush === Z_FINISH) { - /*** FLUSH_BLOCK(s, 1); ***/ - flush_block_only(s, true); - if (s.strm.avail_out === 0) { - return BS_FINISH_STARTED; - } - /***/ - return BS_FINISH_DONE; - } - if (s.last_lit) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - - return BS_BLOCK_DONE; -} - - -/* =========================================================================== - * For Z_RLE, simply look for runs of bytes, generate matches only of distance - * one. Do not maintain a hash table. (It will be regenerated if this run of - * deflate switches away from Z_RLE.) - */ -function deflate_rle(s, flush) { - var bflush; /* set if current block must be flushed */ - var prev; /* byte at distance one to match */ - var scan, strend; /* scan goes up to strend for length of run */ - - var _win = s.window; - - for (;;) { - /* Make sure that we always have enough lookahead, except - * at the end of the input file. We need MAX_MATCH bytes - * for the longest run, plus one for the unrolled loop. - */ - if (s.lookahead <= MAX_MATCH) { - fill_window(s); - if (s.lookahead <= MAX_MATCH && flush === Z_NO_FLUSH) { - return BS_NEED_MORE; - } - if (s.lookahead === 0) { break; } /* flush the current block */ - } - - /* See how many times the previous byte repeats */ - s.match_length = 0; - if (s.lookahead >= MIN_MATCH && s.strstart > 0) { - scan = s.strstart - 1; - prev = _win[scan]; - if (prev === _win[++scan] && prev === _win[++scan] && prev === _win[++scan]) { - strend = s.strstart + MAX_MATCH; - do { - /*jshint noempty:false*/ - } while (prev === _win[++scan] && prev === _win[++scan] && - prev === _win[++scan] && prev === _win[++scan] && - prev === _win[++scan] && prev === _win[++scan] && - prev === _win[++scan] && prev === _win[++scan] && - scan < strend); - s.match_length = MAX_MATCH - (strend - scan); - if (s.match_length > s.lookahead) { - s.match_length = s.lookahead; - } - } - //Assert(scan <= s->window+(uInt)(s->window_size-1), "wild scan"); - } - - /* Emit match if have run of MIN_MATCH or longer, else emit literal */ - if (s.match_length >= MIN_MATCH) { - //check_match(s, s.strstart, s.strstart - 1, s.match_length); - - /*** _tr_tally_dist(s, 1, s.match_length - MIN_MATCH, bflush); ***/ - bflush = trees._tr_tally(s, 1, s.match_length - MIN_MATCH); - - s.lookahead -= s.match_length; - s.strstart += s.match_length; - s.match_length = 0; - } else { - /* No match, output a literal byte */ - //Tracevv((stderr,"%c", s->window[s->strstart])); - /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/ - bflush = trees._tr_tally(s, 0, s.window[s.strstart]); - - s.lookahead--; - s.strstart++; - } - if (bflush) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - } - s.insert = 0; - if (flush === Z_FINISH) { - /*** FLUSH_BLOCK(s, 1); ***/ - flush_block_only(s, true); - if (s.strm.avail_out === 0) { - return BS_FINISH_STARTED; - } - /***/ - return BS_FINISH_DONE; - } - if (s.last_lit) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - return BS_BLOCK_DONE; -} - -/* =========================================================================== - * For Z_HUFFMAN_ONLY, do not look for matches. Do not maintain a hash table. - * (It will be regenerated if this run of deflate switches away from Huffman.) - */ -function deflate_huff(s, flush) { - var bflush; /* set if current block must be flushed */ - - for (;;) { - /* Make sure that we have a literal to write. */ - if (s.lookahead === 0) { - fill_window(s); - if (s.lookahead === 0) { - if (flush === Z_NO_FLUSH) { - return BS_NEED_MORE; - } - break; /* flush the current block */ - } - } - - /* Output a literal byte */ - s.match_length = 0; - //Tracevv((stderr,"%c", s->window[s->strstart])); - /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/ - bflush = trees._tr_tally(s, 0, s.window[s.strstart]); - s.lookahead--; - s.strstart++; - if (bflush) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - } - s.insert = 0; - if (flush === Z_FINISH) { - /*** FLUSH_BLOCK(s, 1); ***/ - flush_block_only(s, true); - if (s.strm.avail_out === 0) { - return BS_FINISH_STARTED; - } - /***/ - return BS_FINISH_DONE; - } - if (s.last_lit) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - return BS_BLOCK_DONE; -} - -/* Values for max_lazy_match, good_match and max_chain_length, depending on - * the desired pack level (0..9). The values given below have been tuned to - * exclude worst case performance for pathological files. Better values may be - * found for specific files. - */ -function Config(good_length, max_lazy, nice_length, max_chain, func) { - this.good_length = good_length; - this.max_lazy = max_lazy; - this.nice_length = nice_length; - this.max_chain = max_chain; - this.func = func; -} - -var configuration_table; - -configuration_table = [ - /* good lazy nice chain */ - new Config(0, 0, 0, 0, deflate_stored), /* 0 store only */ - new Config(4, 4, 8, 4, deflate_fast), /* 1 max speed, no lazy matches */ - new Config(4, 5, 16, 8, deflate_fast), /* 2 */ - new Config(4, 6, 32, 32, deflate_fast), /* 3 */ - - new Config(4, 4, 16, 16, deflate_slow), /* 4 lazy matches */ - new Config(8, 16, 32, 32, deflate_slow), /* 5 */ - new Config(8, 16, 128, 128, deflate_slow), /* 6 */ - new Config(8, 32, 128, 256, deflate_slow), /* 7 */ - new Config(32, 128, 258, 1024, deflate_slow), /* 8 */ - new Config(32, 258, 258, 4096, deflate_slow) /* 9 max compression */ -]; - - -/* =========================================================================== - * Initialize the "longest match" routines for a new zlib stream - */ -function lm_init(s) { - s.window_size = 2 * s.w_size; - - /*** CLEAR_HASH(s); ***/ - zero(s.head); // Fill with NIL (= 0); - - /* Set the default configuration parameters: - */ - s.max_lazy_match = configuration_table[s.level].max_lazy; - s.good_match = configuration_table[s.level].good_length; - s.nice_match = configuration_table[s.level].nice_length; - s.max_chain_length = configuration_table[s.level].max_chain; - - s.strstart = 0; - s.block_start = 0; - s.lookahead = 0; - s.insert = 0; - s.match_length = s.prev_length = MIN_MATCH - 1; - s.match_available = 0; - s.ins_h = 0; -} - - -function DeflateState() { - this.strm = null; /* pointer back to this zlib stream */ - this.status = 0; /* as the name implies */ - this.pending_buf = null; /* output still pending */ - this.pending_buf_size = 0; /* size of pending_buf */ - this.pending_out = 0; /* next pending byte to output to the stream */ - this.pending = 0; /* nb of bytes in the pending buffer */ - this.wrap = 0; /* bit 0 true for zlib, bit 1 true for gzip */ - this.gzhead = null; /* gzip header information to write */ - this.gzindex = 0; /* where in extra, name, or comment */ - this.method = Z_DEFLATED; /* can only be DEFLATED */ - this.last_flush = -1; /* value of flush param for previous deflate call */ - - this.w_size = 0; /* LZ77 window size (32K by default) */ - this.w_bits = 0; /* log2(w_size) (8..16) */ - this.w_mask = 0; /* w_size - 1 */ - - this.window = null; - /* Sliding window. Input bytes are read into the second half of the window, - * and move to the first half later to keep a dictionary of at least wSize - * bytes. With this organization, matches are limited to a distance of - * wSize-MAX_MATCH bytes, but this ensures that IO is always - * performed with a length multiple of the block size. - */ - - this.window_size = 0; - /* Actual size of window: 2*wSize, except when the user input buffer - * is directly used as sliding window. - */ - - this.prev = null; - /* Link to older string with same hash index. To limit the size of this - * array to 64K, this link is maintained only for the last 32K strings. - * An index in this array is thus a window index modulo 32K. - */ - - this.head = null; /* Heads of the hash chains or NIL. */ - - this.ins_h = 0; /* hash index of string to be inserted */ - this.hash_size = 0; /* number of elements in hash table */ - this.hash_bits = 0; /* log2(hash_size) */ - this.hash_mask = 0; /* hash_size-1 */ - - this.hash_shift = 0; - /* Number of bits by which ins_h must be shifted at each input - * step. It must be such that after MIN_MATCH steps, the oldest - * byte no longer takes part in the hash key, that is: - * hash_shift * MIN_MATCH >= hash_bits - */ - - this.block_start = 0; - /* Window position at the beginning of the current output block. Gets - * negative when the window is moved backwards. - */ - - this.match_length = 0; /* length of best match */ - this.prev_match = 0; /* previous match */ - this.match_available = 0; /* set if previous match exists */ - this.strstart = 0; /* start of string to insert */ - this.match_start = 0; /* start of matching string */ - this.lookahead = 0; /* number of valid bytes ahead in window */ - - this.prev_length = 0; - /* Length of the best match at previous step. Matches not greater than this - * are discarded. This is used in the lazy match evaluation. - */ - - this.max_chain_length = 0; - /* To speed up deflation, hash chains are never searched beyond this - * length. A higher limit improves compression ratio but degrades the - * speed. - */ - - this.max_lazy_match = 0; - /* Attempt to find a better match only when the current match is strictly - * smaller than this value. This mechanism is used only for compression - * levels >= 4. - */ - // That's alias to max_lazy_match, don't use directly - //this.max_insert_length = 0; - /* Insert new strings in the hash table only if the match length is not - * greater than this length. This saves time but degrades compression. - * max_insert_length is used only for compression levels <= 3. - */ - - this.level = 0; /* compression level (1..9) */ - this.strategy = 0; /* favor or force Huffman coding*/ - - this.good_match = 0; - /* Use a faster search when the previous match is longer than this */ - - this.nice_match = 0; /* Stop searching when current match exceeds this */ - - /* used by trees.c: */ - - /* Didn't use ct_data typedef below to suppress compiler warning */ - - // struct ct_data_s dyn_ltree[HEAP_SIZE]; /* literal and length tree */ - // struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */ - // struct ct_data_s bl_tree[2*BL_CODES+1]; /* Huffman tree for bit lengths */ - - // Use flat array of DOUBLE size, with interleaved fata, - // because JS does not support effective - this.dyn_ltree = new utils.Buf16(HEAP_SIZE * 2); - this.dyn_dtree = new utils.Buf16((2 * D_CODES + 1) * 2); - this.bl_tree = new utils.Buf16((2 * BL_CODES + 1) * 2); - zero(this.dyn_ltree); - zero(this.dyn_dtree); - zero(this.bl_tree); - - this.l_desc = null; /* desc. for literal tree */ - this.d_desc = null; /* desc. for distance tree */ - this.bl_desc = null; /* desc. for bit length tree */ - - //ush bl_count[MAX_BITS+1]; - this.bl_count = new utils.Buf16(MAX_BITS + 1); - /* number of codes at each bit length for an optimal tree */ - - //int heap[2*L_CODES+1]; /* heap used to build the Huffman trees */ - this.heap = new utils.Buf16(2 * L_CODES + 1); /* heap used to build the Huffman trees */ - zero(this.heap); - - this.heap_len = 0; /* number of elements in the heap */ - this.heap_max = 0; /* element of largest frequency */ - /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used. - * The same heap array is used to build all trees. - */ - - this.depth = new utils.Buf16(2 * L_CODES + 1); //uch depth[2*L_CODES+1]; - zero(this.depth); - /* Depth of each subtree used as tie breaker for trees of equal frequency - */ - - this.l_buf = 0; /* buffer index for literals or lengths */ - - this.lit_bufsize = 0; - /* Size of match buffer for literals/lengths. There are 4 reasons for - * limiting lit_bufsize to 64K: - * - frequencies can be kept in 16 bit counters - * - if compression is not successful for the first block, all input - * data is still in the window so we can still emit a stored block even - * when input comes from standard input. (This can also be done for - * all blocks if lit_bufsize is not greater than 32K.) - * - if compression is not successful for a file smaller than 64K, we can - * even emit a stored file instead of a stored block (saving 5 bytes). - * This is applicable only for zip (not gzip or zlib). - * - creating new Huffman trees less frequently may not provide fast - * adaptation to changes in the input data statistics. (Take for - * example a binary file with poorly compressible code followed by - * a highly compressible string table.) Smaller buffer sizes give - * fast adaptation but have of course the overhead of transmitting - * trees more frequently. - * - I can't count above 4 - */ - - this.last_lit = 0; /* running index in l_buf */ - - this.d_buf = 0; - /* Buffer index for distances. To simplify the code, d_buf and l_buf have - * the same number of elements. To use different lengths, an extra flag - * array would be necessary. - */ - - this.opt_len = 0; /* bit length of current block with optimal trees */ - this.static_len = 0; /* bit length of current block with static trees */ - this.matches = 0; /* number of string matches in current block */ - this.insert = 0; /* bytes at end of window left to insert */ - - - this.bi_buf = 0; - /* Output buffer. bits are inserted starting at the bottom (least - * significant bits). - */ - this.bi_valid = 0; - /* Number of valid bits in bi_buf. All bits above the last valid bit - * are always zero. - */ - - // Used for window memory init. We safely ignore it for JS. That makes - // sense only for pointers and memory check tools. - //this.high_water = 0; - /* High water mark offset in window for initialized bytes -- bytes above - * this are set to zero in order to avoid memory check warnings when - * longest match routines access bytes past the input. This is then - * updated to the new high water mark. - */ -} - - -function deflateResetKeep(strm) { - var s; - - if (!strm || !strm.state) { - return err(strm, Z_STREAM_ERROR); - } - - strm.total_in = strm.total_out = 0; - strm.data_type = Z_UNKNOWN; - - s = strm.state; - s.pending = 0; - s.pending_out = 0; - - if (s.wrap < 0) { - s.wrap = -s.wrap; - /* was made negative by deflate(..., Z_FINISH); */ - } - s.status = (s.wrap ? INIT_STATE : BUSY_STATE); - strm.adler = (s.wrap === 2) ? - 0 // crc32(0, Z_NULL, 0) - : - 1; // adler32(0, Z_NULL, 0) - s.last_flush = Z_NO_FLUSH; - trees._tr_init(s); - return Z_OK; -} - - -function deflateReset(strm) { - var ret = deflateResetKeep(strm); - if (ret === Z_OK) { - lm_init(strm.state); - } - return ret; -} - - -function deflateSetHeader(strm, head) { - if (!strm || !strm.state) { return Z_STREAM_ERROR; } - if (strm.state.wrap !== 2) { return Z_STREAM_ERROR; } - strm.state.gzhead = head; - return Z_OK; -} - - -function deflateInit2(strm, level, method, windowBits, memLevel, strategy) { - if (!strm) { // === Z_NULL - return Z_STREAM_ERROR; - } - var wrap = 1; - - if (level === Z_DEFAULT_COMPRESSION) { - level = 6; - } - - if (windowBits < 0) { /* suppress zlib wrapper */ - wrap = 0; - windowBits = -windowBits; - } - - else if (windowBits > 15) { - wrap = 2; /* write gzip wrapper instead */ - windowBits -= 16; - } - - - if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || method !== Z_DEFLATED || - windowBits < 8 || windowBits > 15 || level < 0 || level > 9 || - strategy < 0 || strategy > Z_FIXED) { - return err(strm, Z_STREAM_ERROR); - } - - - if (windowBits === 8) { - windowBits = 9; - } - /* until 256-byte window bug fixed */ - - var s = new DeflateState(); - - strm.state = s; - s.strm = strm; - - s.wrap = wrap; - s.gzhead = null; - s.w_bits = windowBits; - s.w_size = 1 << s.w_bits; - s.w_mask = s.w_size - 1; - - s.hash_bits = memLevel + 7; - s.hash_size = 1 << s.hash_bits; - s.hash_mask = s.hash_size - 1; - s.hash_shift = ~~((s.hash_bits + MIN_MATCH - 1) / MIN_MATCH); - - s.window = new utils.Buf8(s.w_size * 2); - s.head = new utils.Buf16(s.hash_size); - s.prev = new utils.Buf16(s.w_size); - - // Don't need mem init magic for JS. - //s.high_water = 0; /* nothing written to s->window yet */ - - s.lit_bufsize = 1 << (memLevel + 6); /* 16K elements by default */ - - s.pending_buf_size = s.lit_bufsize * 4; - - //overlay = (ushf *) ZALLOC(strm, s->lit_bufsize, sizeof(ush)+2); - //s->pending_buf = (uchf *) overlay; - s.pending_buf = new utils.Buf8(s.pending_buf_size); - - // It is offset from `s.pending_buf` (size is `s.lit_bufsize * 2`) - //s->d_buf = overlay + s->lit_bufsize/sizeof(ush); - s.d_buf = 1 * s.lit_bufsize; - - //s->l_buf = s->pending_buf + (1+sizeof(ush))*s->lit_bufsize; - s.l_buf = (1 + 2) * s.lit_bufsize; - - s.level = level; - s.strategy = strategy; - s.method = method; - - return deflateReset(strm); -} - -function deflateInit(strm, level) { - return deflateInit2(strm, level, Z_DEFLATED, MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY); -} - - -function deflate(strm, flush) { - var old_flush, s; - var beg, val; // for gzip header write only - - if (!strm || !strm.state || - flush > Z_BLOCK || flush < 0) { - return strm ? err(strm, Z_STREAM_ERROR) : Z_STREAM_ERROR; - } - - s = strm.state; - - if (!strm.output || - (!strm.input && strm.avail_in !== 0) || - (s.status === FINISH_STATE && flush !== Z_FINISH)) { - return err(strm, (strm.avail_out === 0) ? Z_BUF_ERROR : Z_STREAM_ERROR); - } - - s.strm = strm; /* just in case */ - old_flush = s.last_flush; - s.last_flush = flush; - - /* Write the header */ - if (s.status === INIT_STATE) { - - if (s.wrap === 2) { // GZIP header - strm.adler = 0; //crc32(0L, Z_NULL, 0); - put_byte(s, 31); - put_byte(s, 139); - put_byte(s, 8); - if (!s.gzhead) { // s->gzhead == Z_NULL - put_byte(s, 0); - put_byte(s, 0); - put_byte(s, 0); - put_byte(s, 0); - put_byte(s, 0); - put_byte(s, s.level === 9 ? 2 : - (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ? - 4 : 0)); - put_byte(s, OS_CODE); - s.status = BUSY_STATE; - } - else { - put_byte(s, (s.gzhead.text ? 1 : 0) + - (s.gzhead.hcrc ? 2 : 0) + - (!s.gzhead.extra ? 0 : 4) + - (!s.gzhead.name ? 0 : 8) + - (!s.gzhead.comment ? 0 : 16) - ); - put_byte(s, s.gzhead.time & 0xff); - put_byte(s, (s.gzhead.time >> 8) & 0xff); - put_byte(s, (s.gzhead.time >> 16) & 0xff); - put_byte(s, (s.gzhead.time >> 24) & 0xff); - put_byte(s, s.level === 9 ? 2 : - (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ? - 4 : 0)); - put_byte(s, s.gzhead.os & 0xff); - if (s.gzhead.extra && s.gzhead.extra.length) { - put_byte(s, s.gzhead.extra.length & 0xff); - put_byte(s, (s.gzhead.extra.length >> 8) & 0xff); - } - if (s.gzhead.hcrc) { - strm.adler = crc32(strm.adler, s.pending_buf, s.pending, 0); - } - s.gzindex = 0; - s.status = EXTRA_STATE; - } - } - else // DEFLATE header - { - var header = (Z_DEFLATED + ((s.w_bits - 8) << 4)) << 8; - var level_flags = -1; - - if (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2) { - level_flags = 0; - } else if (s.level < 6) { - level_flags = 1; - } else if (s.level === 6) { - level_flags = 2; - } else { - level_flags = 3; - } - header |= (level_flags << 6); - if (s.strstart !== 0) { header |= PRESET_DICT; } - header += 31 - (header % 31); - - s.status = BUSY_STATE; - putShortMSB(s, header); - - /* Save the adler32 of the preset dictionary: */ - if (s.strstart !== 0) { - putShortMSB(s, strm.adler >>> 16); - putShortMSB(s, strm.adler & 0xffff); - } - strm.adler = 1; // adler32(0L, Z_NULL, 0); - } - } - -//#ifdef GZIP - if (s.status === EXTRA_STATE) { - if (s.gzhead.extra/* != Z_NULL*/) { - beg = s.pending; /* start of bytes to update crc */ - - while (s.gzindex < (s.gzhead.extra.length & 0xffff)) { - if (s.pending === s.pending_buf_size) { - if (s.gzhead.hcrc && s.pending > beg) { - strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg); - } - flush_pending(strm); - beg = s.pending; - if (s.pending === s.pending_buf_size) { - break; - } - } - put_byte(s, s.gzhead.extra[s.gzindex] & 0xff); - s.gzindex++; - } - if (s.gzhead.hcrc && s.pending > beg) { - strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg); - } - if (s.gzindex === s.gzhead.extra.length) { - s.gzindex = 0; - s.status = NAME_STATE; - } - } - else { - s.status = NAME_STATE; - } - } - if (s.status === NAME_STATE) { - if (s.gzhead.name/* != Z_NULL*/) { - beg = s.pending; /* start of bytes to update crc */ - //int val; - - do { - if (s.pending === s.pending_buf_size) { - if (s.gzhead.hcrc && s.pending > beg) { - strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg); - } - flush_pending(strm); - beg = s.pending; - if (s.pending === s.pending_buf_size) { - val = 1; - break; - } - } - // JS specific: little magic to add zero terminator to end of string - if (s.gzindex < s.gzhead.name.length) { - val = s.gzhead.name.charCodeAt(s.gzindex++) & 0xff; - } else { - val = 0; - } - put_byte(s, val); - } while (val !== 0); - - if (s.gzhead.hcrc && s.pending > beg) { - strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg); - } - if (val === 0) { - s.gzindex = 0; - s.status = COMMENT_STATE; - } - } - else { - s.status = COMMENT_STATE; - } - } - if (s.status === COMMENT_STATE) { - if (s.gzhead.comment/* != Z_NULL*/) { - beg = s.pending; /* start of bytes to update crc */ - //int val; - - do { - if (s.pending === s.pending_buf_size) { - if (s.gzhead.hcrc && s.pending > beg) { - strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg); - } - flush_pending(strm); - beg = s.pending; - if (s.pending === s.pending_buf_size) { - val = 1; - break; - } - } - // JS specific: little magic to add zero terminator to end of string - if (s.gzindex < s.gzhead.comment.length) { - val = s.gzhead.comment.charCodeAt(s.gzindex++) & 0xff; - } else { - val = 0; - } - put_byte(s, val); - } while (val !== 0); - - if (s.gzhead.hcrc && s.pending > beg) { - strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg); - } - if (val === 0) { - s.status = HCRC_STATE; - } - } - else { - s.status = HCRC_STATE; - } - } - if (s.status === HCRC_STATE) { - if (s.gzhead.hcrc) { - if (s.pending + 2 > s.pending_buf_size) { - flush_pending(strm); - } - if (s.pending + 2 <= s.pending_buf_size) { - put_byte(s, strm.adler & 0xff); - put_byte(s, (strm.adler >> 8) & 0xff); - strm.adler = 0; //crc32(0L, Z_NULL, 0); - s.status = BUSY_STATE; - } - } - else { - s.status = BUSY_STATE; - } - } -//#endif - - /* Flush as much pending output as possible */ - if (s.pending !== 0) { - flush_pending(strm); - if (strm.avail_out === 0) { - /* Since avail_out is 0, deflate will be called again with - * more output space, but possibly with both pending and - * avail_in equal to zero. There won't be anything to do, - * but this is not an error situation so make sure we - * return OK instead of BUF_ERROR at next call of deflate: - */ - s.last_flush = -1; - return Z_OK; - } - - /* Make sure there is something to do and avoid duplicate consecutive - * flushes. For repeated and useless calls with Z_FINISH, we keep - * returning Z_STREAM_END instead of Z_BUF_ERROR. - */ - } else if (strm.avail_in === 0 && rank(flush) <= rank(old_flush) && - flush !== Z_FINISH) { - return err(strm, Z_BUF_ERROR); - } - - /* User must not provide more input after the first FINISH: */ - if (s.status === FINISH_STATE && strm.avail_in !== 0) { - return err(strm, Z_BUF_ERROR); - } - - /* Start a new block or continue the current one. - */ - if (strm.avail_in !== 0 || s.lookahead !== 0 || - (flush !== Z_NO_FLUSH && s.status !== FINISH_STATE)) { - var bstate = (s.strategy === Z_HUFFMAN_ONLY) ? deflate_huff(s, flush) : - (s.strategy === Z_RLE ? deflate_rle(s, flush) : - configuration_table[s.level].func(s, flush)); - - if (bstate === BS_FINISH_STARTED || bstate === BS_FINISH_DONE) { - s.status = FINISH_STATE; - } - if (bstate === BS_NEED_MORE || bstate === BS_FINISH_STARTED) { - if (strm.avail_out === 0) { - s.last_flush = -1; - /* avoid BUF_ERROR next call, see above */ - } - return Z_OK; - /* If flush != Z_NO_FLUSH && avail_out == 0, the next call - * of deflate should use the same flush parameter to make sure - * that the flush is complete. So we don't have to output an - * empty block here, this will be done at next call. This also - * ensures that for a very small output buffer, we emit at most - * one empty block. - */ - } - if (bstate === BS_BLOCK_DONE) { - if (flush === Z_PARTIAL_FLUSH) { - trees._tr_align(s); - } - else if (flush !== Z_BLOCK) { /* FULL_FLUSH or SYNC_FLUSH */ - - trees._tr_stored_block(s, 0, 0, false); - /* For a full flush, this empty block will be recognized - * as a special marker by inflate_sync(). - */ - if (flush === Z_FULL_FLUSH) { - /*** CLEAR_HASH(s); ***/ /* forget history */ - zero(s.head); // Fill with NIL (= 0); - - if (s.lookahead === 0) { - s.strstart = 0; - s.block_start = 0; - s.insert = 0; - } - } - } - flush_pending(strm); - if (strm.avail_out === 0) { - s.last_flush = -1; /* avoid BUF_ERROR at next call, see above */ - return Z_OK; - } - } - } - //Assert(strm->avail_out > 0, "bug2"); - //if (strm.avail_out <= 0) { throw new Error("bug2");} - - if (flush !== Z_FINISH) { return Z_OK; } - if (s.wrap <= 0) { return Z_STREAM_END; } - - /* Write the trailer */ - if (s.wrap === 2) { - put_byte(s, strm.adler & 0xff); - put_byte(s, (strm.adler >> 8) & 0xff); - put_byte(s, (strm.adler >> 16) & 0xff); - put_byte(s, (strm.adler >> 24) & 0xff); - put_byte(s, strm.total_in & 0xff); - put_byte(s, (strm.total_in >> 8) & 0xff); - put_byte(s, (strm.total_in >> 16) & 0xff); - put_byte(s, (strm.total_in >> 24) & 0xff); - } - else - { - putShortMSB(s, strm.adler >>> 16); - putShortMSB(s, strm.adler & 0xffff); - } - - flush_pending(strm); - /* If avail_out is zero, the application will call deflate again - * to flush the rest. - */ - if (s.wrap > 0) { s.wrap = -s.wrap; } - /* write the trailer only once! */ - return s.pending !== 0 ? Z_OK : Z_STREAM_END; -} - -function deflateEnd(strm) { - var status; - - if (!strm/*== Z_NULL*/ || !strm.state/*== Z_NULL*/) { - return Z_STREAM_ERROR; - } - - status = strm.state.status; - if (status !== INIT_STATE && - status !== EXTRA_STATE && - status !== NAME_STATE && - status !== COMMENT_STATE && - status !== HCRC_STATE && - status !== BUSY_STATE && - status !== FINISH_STATE - ) { - return err(strm, Z_STREAM_ERROR); - } - - strm.state = null; - - return status === BUSY_STATE ? err(strm, Z_DATA_ERROR) : Z_OK; -} - - -/* ========================================================================= - * Initializes the compression dictionary from the given byte - * sequence without producing any compressed output. - */ -function deflateSetDictionary(strm, dictionary) { - var dictLength = dictionary.length; - - var s; - var str, n; - var wrap; - var avail; - var next; - var input; - var tmpDict; - - if (!strm/*== Z_NULL*/ || !strm.state/*== Z_NULL*/) { - return Z_STREAM_ERROR; - } - - s = strm.state; - wrap = s.wrap; - - if (wrap === 2 || (wrap === 1 && s.status !== INIT_STATE) || s.lookahead) { - return Z_STREAM_ERROR; - } - - /* when using zlib wrappers, compute Adler-32 for provided dictionary */ - if (wrap === 1) { - /* adler32(strm->adler, dictionary, dictLength); */ - strm.adler = adler32(strm.adler, dictionary, dictLength, 0); - } - - s.wrap = 0; /* avoid computing Adler-32 in read_buf */ - - /* if dictionary would fill window, just replace the history */ - if (dictLength >= s.w_size) { - if (wrap === 0) { /* already empty otherwise */ - /*** CLEAR_HASH(s); ***/ - zero(s.head); // Fill with NIL (= 0); - s.strstart = 0; - s.block_start = 0; - s.insert = 0; - } - /* use the tail */ - // dictionary = dictionary.slice(dictLength - s.w_size); - tmpDict = new utils.Buf8(s.w_size); - utils.arraySet(tmpDict, dictionary, dictLength - s.w_size, s.w_size, 0); - dictionary = tmpDict; - dictLength = s.w_size; - } - /* insert dictionary into window and hash */ - avail = strm.avail_in; - next = strm.next_in; - input = strm.input; - strm.avail_in = dictLength; - strm.next_in = 0; - strm.input = dictionary; - fill_window(s); - while (s.lookahead >= MIN_MATCH) { - str = s.strstart; - n = s.lookahead - (MIN_MATCH - 1); - do { - /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */ - s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + MIN_MATCH - 1]) & s.hash_mask; - - s.prev[str & s.w_mask] = s.head[s.ins_h]; - - s.head[s.ins_h] = str; - str++; - } while (--n); - s.strstart = str; - s.lookahead = MIN_MATCH - 1; - fill_window(s); - } - s.strstart += s.lookahead; - s.block_start = s.strstart; - s.insert = s.lookahead; - s.lookahead = 0; - s.match_length = s.prev_length = MIN_MATCH - 1; - s.match_available = 0; - strm.next_in = next; - strm.input = input; - strm.avail_in = avail; - s.wrap = wrap; - return Z_OK; -} - - -exports.deflateInit = deflateInit; -exports.deflateInit2 = deflateInit2; -exports.deflateReset = deflateReset; -exports.deflateResetKeep = deflateResetKeep; -exports.deflateSetHeader = deflateSetHeader; -exports.deflate = deflate; -exports.deflateEnd = deflateEnd; -exports.deflateSetDictionary = deflateSetDictionary; -exports.deflateInfo = 'pako deflate (from Nodeca project)'; - -/* Not implemented -exports.deflateBound = deflateBound; -exports.deflateCopy = deflateCopy; -exports.deflateParams = deflateParams; -exports.deflatePending = deflatePending; -exports.deflatePrime = deflatePrime; -exports.deflateTune = deflateTune; -*/ - -},{"../utils/common":3,"./adler32":5,"./crc32":7,"./messages":13,"./trees":14}],9:[function(require,module,exports){ -'use strict'; - -// (C) 1995-2013 Jean-loup Gailly and Mark Adler -// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would be -// appreciated but is not required. -// 2. Altered source versions must be plainly marked as such, and must not be -// misrepresented as being the original software. -// 3. This notice may not be removed or altered from any source distribution. - -function GZheader() { - /* true if compressed data believed to be text */ - this.text = 0; - /* modification time */ - this.time = 0; - /* extra flags (not used when writing a gzip file) */ - this.xflags = 0; - /* operating system */ - this.os = 0; - /* pointer to extra field or Z_NULL if none */ - this.extra = null; - /* extra field length (valid if extra != Z_NULL) */ - this.extra_len = 0; // Actually, we don't need it in JS, - // but leave for few code modifications - - // - // Setup limits is not necessary because in js we should not preallocate memory - // for inflate use constant limit in 65536 bytes - // - - /* space at extra (only when reading header) */ - // this.extra_max = 0; - /* pointer to zero-terminated file name or Z_NULL */ - this.name = ''; - /* space at name (only when reading header) */ - // this.name_max = 0; - /* pointer to zero-terminated comment or Z_NULL */ - this.comment = ''; - /* space at comment (only when reading header) */ - // this.comm_max = 0; - /* true if there was or will be a header crc */ - this.hcrc = 0; - /* true when done reading gzip header (not used when writing a gzip file) */ - this.done = false; -} - -module.exports = GZheader; - -},{}],10:[function(require,module,exports){ -'use strict'; - -// (C) 1995-2013 Jean-loup Gailly and Mark Adler -// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would be -// appreciated but is not required. -// 2. Altered source versions must be plainly marked as such, and must not be -// misrepresented as being the original software. -// 3. This notice may not be removed or altered from any source distribution. - -// See state defs from inflate.js -var BAD = 30; /* got a data error -- remain here until reset */ -var TYPE = 12; /* i: waiting for type bits, including last-flag bit */ - -/* - Decode literal, length, and distance codes and write out the resulting - literal and match bytes until either not enough input or output is - available, an end-of-block is encountered, or a data error is encountered. - When large enough input and output buffers are supplied to inflate(), for - example, a 16K input buffer and a 64K output buffer, more than 95% of the - inflate execution time is spent in this routine. - - Entry assumptions: - - state.mode === LEN - strm.avail_in >= 6 - strm.avail_out >= 258 - start >= strm.avail_out - state.bits < 8 - - On return, state.mode is one of: - - LEN -- ran out of enough output space or enough available input - TYPE -- reached end of block code, inflate() to interpret next block - BAD -- error in block data - - Notes: - - - The maximum input bits used by a length/distance pair is 15 bits for the - length code, 5 bits for the length extra, 15 bits for the distance code, - and 13 bits for the distance extra. This totals 48 bits, or six bytes. - Therefore if strm.avail_in >= 6, then there is enough input to avoid - checking for available input while decoding. - - - The maximum bytes that a single length/distance pair can output is 258 - bytes, which is the maximum length that can be coded. inflate_fast() - requires strm.avail_out >= 258 for each loop to avoid checking for - output space. - */ -module.exports = function inflate_fast(strm, start) { - var state; - var _in; /* local strm.input */ - var last; /* have enough input while in < last */ - var _out; /* local strm.output */ - var beg; /* inflate()'s initial strm.output */ - var end; /* while out < end, enough space available */ -//#ifdef INFLATE_STRICT - var dmax; /* maximum distance from zlib header */ -//#endif - var wsize; /* window size or zero if not using window */ - var whave; /* valid bytes in the window */ - var wnext; /* window write index */ - // Use `s_window` instead `window`, avoid conflict with instrumentation tools - var s_window; /* allocated sliding window, if wsize != 0 */ - var hold; /* local strm.hold */ - var bits; /* local strm.bits */ - var lcode; /* local strm.lencode */ - var dcode; /* local strm.distcode */ - var lmask; /* mask for first level of length codes */ - var dmask; /* mask for first level of distance codes */ - var here; /* retrieved table entry */ - var op; /* code bits, operation, extra bits, or */ - /* window position, window bytes to copy */ - var len; /* match length, unused bytes */ - var dist; /* match distance */ - var from; /* where to copy match from */ - var from_source; - - - var input, output; // JS specific, because we have no pointers - - /* copy state to local variables */ - state = strm.state; - //here = state.here; - _in = strm.next_in; - input = strm.input; - last = _in + (strm.avail_in - 5); - _out = strm.next_out; - output = strm.output; - beg = _out - (start - strm.avail_out); - end = _out + (strm.avail_out - 257); -//#ifdef INFLATE_STRICT - dmax = state.dmax; -//#endif - wsize = state.wsize; - whave = state.whave; - wnext = state.wnext; - s_window = state.window; - hold = state.hold; - bits = state.bits; - lcode = state.lencode; - dcode = state.distcode; - lmask = (1 << state.lenbits) - 1; - dmask = (1 << state.distbits) - 1; - - - /* decode literals and length/distances until end-of-block or not enough - input data or output space */ - - top: - do { - if (bits < 15) { - hold += input[_in++] << bits; - bits += 8; - hold += input[_in++] << bits; - bits += 8; - } - - here = lcode[hold & lmask]; - - dolen: - for (;;) { // Goto emulation - op = here >>> 24/*here.bits*/; - hold >>>= op; - bits -= op; - op = (here >>> 16) & 0xff/*here.op*/; - if (op === 0) { /* literal */ - //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ? - // "inflate: literal '%c'\n" : - // "inflate: literal 0x%02x\n", here.val)); - output[_out++] = here & 0xffff/*here.val*/; - } - else if (op & 16) { /* length base */ - len = here & 0xffff/*here.val*/; - op &= 15; /* number of extra bits */ - if (op) { - if (bits < op) { - hold += input[_in++] << bits; - bits += 8; - } - len += hold & ((1 << op) - 1); - hold >>>= op; - bits -= op; - } - //Tracevv((stderr, "inflate: length %u\n", len)); - if (bits < 15) { - hold += input[_in++] << bits; - bits += 8; - hold += input[_in++] << bits; - bits += 8; - } - here = dcode[hold & dmask]; - - dodist: - for (;;) { // goto emulation - op = here >>> 24/*here.bits*/; - hold >>>= op; - bits -= op; - op = (here >>> 16) & 0xff/*here.op*/; - - if (op & 16) { /* distance base */ - dist = here & 0xffff/*here.val*/; - op &= 15; /* number of extra bits */ - if (bits < op) { - hold += input[_in++] << bits; - bits += 8; - if (bits < op) { - hold += input[_in++] << bits; - bits += 8; - } - } - dist += hold & ((1 << op) - 1); -//#ifdef INFLATE_STRICT - if (dist > dmax) { - strm.msg = 'invalid distance too far back'; - state.mode = BAD; - break top; - } -//#endif - hold >>>= op; - bits -= op; - //Tracevv((stderr, "inflate: distance %u\n", dist)); - op = _out - beg; /* max distance in output */ - if (dist > op) { /* see if copy from window */ - op = dist - op; /* distance back in window */ - if (op > whave) { - if (state.sane) { - strm.msg = 'invalid distance too far back'; - state.mode = BAD; - break top; - } - -// (!) This block is disabled in zlib defaults, -// don't enable it for binary compatibility -//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR -// if (len <= op - whave) { -// do { -// output[_out++] = 0; -// } while (--len); -// continue top; -// } -// len -= op - whave; -// do { -// output[_out++] = 0; -// } while (--op > whave); -// if (op === 0) { -// from = _out - dist; -// do { -// output[_out++] = output[from++]; -// } while (--len); -// continue top; -// } -//#endif - } - from = 0; // window index - from_source = s_window; - if (wnext === 0) { /* very common case */ - from += wsize - op; - if (op < len) { /* some from window */ - len -= op; - do { - output[_out++] = s_window[from++]; - } while (--op); - from = _out - dist; /* rest from output */ - from_source = output; - } - } - else if (wnext < op) { /* wrap around window */ - from += wsize + wnext - op; - op -= wnext; - if (op < len) { /* some from end of window */ - len -= op; - do { - output[_out++] = s_window[from++]; - } while (--op); - from = 0; - if (wnext < len) { /* some from start of window */ - op = wnext; - len -= op; - do { - output[_out++] = s_window[from++]; - } while (--op); - from = _out - dist; /* rest from output */ - from_source = output; - } - } - } - else { /* contiguous in window */ - from += wnext - op; - if (op < len) { /* some from window */ - len -= op; - do { - output[_out++] = s_window[from++]; - } while (--op); - from = _out - dist; /* rest from output */ - from_source = output; - } - } - while (len > 2) { - output[_out++] = from_source[from++]; - output[_out++] = from_source[from++]; - output[_out++] = from_source[from++]; - len -= 3; - } - if (len) { - output[_out++] = from_source[from++]; - if (len > 1) { - output[_out++] = from_source[from++]; - } - } - } - else { - from = _out - dist; /* copy direct from output */ - do { /* minimum length is three */ - output[_out++] = output[from++]; - output[_out++] = output[from++]; - output[_out++] = output[from++]; - len -= 3; - } while (len > 2); - if (len) { - output[_out++] = output[from++]; - if (len > 1) { - output[_out++] = output[from++]; - } - } - } - } - else if ((op & 64) === 0) { /* 2nd level distance code */ - here = dcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))]; - continue dodist; - } - else { - strm.msg = 'invalid distance code'; - state.mode = BAD; - break top; - } - - break; // need to emulate goto via "continue" - } - } - else if ((op & 64) === 0) { /* 2nd level length code */ - here = lcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))]; - continue dolen; - } - else if (op & 32) { /* end-of-block */ - //Tracevv((stderr, "inflate: end of block\n")); - state.mode = TYPE; - break top; - } - else { - strm.msg = 'invalid literal/length code'; - state.mode = BAD; - break top; - } - - break; // need to emulate goto via "continue" - } - } while (_in < last && _out < end); - - /* return unused bytes (on entry, bits < 8, so in won't go too far back) */ - len = bits >> 3; - _in -= len; - bits -= len << 3; - hold &= (1 << bits) - 1; - - /* update state and return */ - strm.next_in = _in; - strm.next_out = _out; - strm.avail_in = (_in < last ? 5 + (last - _in) : 5 - (_in - last)); - strm.avail_out = (_out < end ? 257 + (end - _out) : 257 - (_out - end)); - state.hold = hold; - state.bits = bits; - return; -}; - -},{}],11:[function(require,module,exports){ -'use strict'; - -// (C) 1995-2013 Jean-loup Gailly and Mark Adler -// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would be -// appreciated but is not required. -// 2. Altered source versions must be plainly marked as such, and must not be -// misrepresented as being the original software. -// 3. This notice may not be removed or altered from any source distribution. - -var utils = require('../utils/common'); -var adler32 = require('./adler32'); -var crc32 = require('./crc32'); -var inflate_fast = require('./inffast'); -var inflate_table = require('./inftrees'); - -var CODES = 0; -var LENS = 1; -var DISTS = 2; - -/* Public constants ==========================================================*/ -/* ===========================================================================*/ - - -/* Allowed flush values; see deflate() and inflate() below for details */ -//var Z_NO_FLUSH = 0; -//var Z_PARTIAL_FLUSH = 1; -//var Z_SYNC_FLUSH = 2; -//var Z_FULL_FLUSH = 3; -var Z_FINISH = 4; -var Z_BLOCK = 5; -var Z_TREES = 6; - - -/* Return codes for the compression/decompression functions. Negative values - * are errors, positive values are used for special but normal events. - */ -var Z_OK = 0; -var Z_STREAM_END = 1; -var Z_NEED_DICT = 2; -//var Z_ERRNO = -1; -var Z_STREAM_ERROR = -2; -var Z_DATA_ERROR = -3; -var Z_MEM_ERROR = -4; -var Z_BUF_ERROR = -5; -//var Z_VERSION_ERROR = -6; - -/* The deflate compression method */ -var Z_DEFLATED = 8; - - -/* STATES ====================================================================*/ -/* ===========================================================================*/ - - -var HEAD = 1; /* i: waiting for magic header */ -var FLAGS = 2; /* i: waiting for method and flags (gzip) */ -var TIME = 3; /* i: waiting for modification time (gzip) */ -var OS = 4; /* i: waiting for extra flags and operating system (gzip) */ -var EXLEN = 5; /* i: waiting for extra length (gzip) */ -var EXTRA = 6; /* i: waiting for extra bytes (gzip) */ -var NAME = 7; /* i: waiting for end of file name (gzip) */ -var COMMENT = 8; /* i: waiting for end of comment (gzip) */ -var HCRC = 9; /* i: waiting for header crc (gzip) */ -var DICTID = 10; /* i: waiting for dictionary check value */ -var DICT = 11; /* waiting for inflateSetDictionary() call */ -var TYPE = 12; /* i: waiting for type bits, including last-flag bit */ -var TYPEDO = 13; /* i: same, but skip check to exit inflate on new block */ -var STORED = 14; /* i: waiting for stored size (length and complement) */ -var COPY_ = 15; /* i/o: same as COPY below, but only first time in */ -var COPY = 16; /* i/o: waiting for input or output to copy stored block */ -var TABLE = 17; /* i: waiting for dynamic block table lengths */ -var LENLENS = 18; /* i: waiting for code length code lengths */ -var CODELENS = 19; /* i: waiting for length/lit and distance code lengths */ -var LEN_ = 20; /* i: same as LEN below, but only first time in */ -var LEN = 21; /* i: waiting for length/lit/eob code */ -var LENEXT = 22; /* i: waiting for length extra bits */ -var DIST = 23; /* i: waiting for distance code */ -var DISTEXT = 24; /* i: waiting for distance extra bits */ -var MATCH = 25; /* o: waiting for output space to copy string */ -var LIT = 26; /* o: waiting for output space to write literal */ -var CHECK = 27; /* i: waiting for 32-bit check value */ -var LENGTH = 28; /* i: waiting for 32-bit length (gzip) */ -var DONE = 29; /* finished check, done -- remain here until reset */ -var BAD = 30; /* got a data error -- remain here until reset */ -var MEM = 31; /* got an inflate() memory error -- remain here until reset */ -var SYNC = 32; /* looking for synchronization bytes to restart inflate() */ - -/* ===========================================================================*/ - - - -var ENOUGH_LENS = 852; -var ENOUGH_DISTS = 592; -//var ENOUGH = (ENOUGH_LENS+ENOUGH_DISTS); - -var MAX_WBITS = 15; -/* 32K LZ77 window */ -var DEF_WBITS = MAX_WBITS; - - -function zswap32(q) { - return (((q >>> 24) & 0xff) + - ((q >>> 8) & 0xff00) + - ((q & 0xff00) << 8) + - ((q & 0xff) << 24)); -} - - -function InflateState() { - this.mode = 0; /* current inflate mode */ - this.last = false; /* true if processing last block */ - this.wrap = 0; /* bit 0 true for zlib, bit 1 true for gzip */ - this.havedict = false; /* true if dictionary provided */ - this.flags = 0; /* gzip header method and flags (0 if zlib) */ - this.dmax = 0; /* zlib header max distance (INFLATE_STRICT) */ - this.check = 0; /* protected copy of check value */ - this.total = 0; /* protected copy of output count */ - // TODO: may be {} - this.head = null; /* where to save gzip header information */ - - /* sliding window */ - this.wbits = 0; /* log base 2 of requested window size */ - this.wsize = 0; /* window size or zero if not using window */ - this.whave = 0; /* valid bytes in the window */ - this.wnext = 0; /* window write index */ - this.window = null; /* allocated sliding window, if needed */ - - /* bit accumulator */ - this.hold = 0; /* input bit accumulator */ - this.bits = 0; /* number of bits in "in" */ - - /* for string and stored block copying */ - this.length = 0; /* literal or length of data to copy */ - this.offset = 0; /* distance back to copy string from */ - - /* for table and code decoding */ - this.extra = 0; /* extra bits needed */ - - /* fixed and dynamic code tables */ - this.lencode = null; /* starting table for length/literal codes */ - this.distcode = null; /* starting table for distance codes */ - this.lenbits = 0; /* index bits for lencode */ - this.distbits = 0; /* index bits for distcode */ - - /* dynamic table building */ - this.ncode = 0; /* number of code length code lengths */ - this.nlen = 0; /* number of length code lengths */ - this.ndist = 0; /* number of distance code lengths */ - this.have = 0; /* number of code lengths in lens[] */ - this.next = null; /* next available space in codes[] */ - - this.lens = new utils.Buf16(320); /* temporary storage for code lengths */ - this.work = new utils.Buf16(288); /* work area for code table building */ - - /* - because we don't have pointers in js, we use lencode and distcode directly - as buffers so we don't need codes - */ - //this.codes = new utils.Buf32(ENOUGH); /* space for code tables */ - this.lendyn = null; /* dynamic table for length/literal codes (JS specific) */ - this.distdyn = null; /* dynamic table for distance codes (JS specific) */ - this.sane = 0; /* if false, allow invalid distance too far */ - this.back = 0; /* bits back of last unprocessed length/lit */ - this.was = 0; /* initial length of match */ -} - -function inflateResetKeep(strm) { - var state; - - if (!strm || !strm.state) { return Z_STREAM_ERROR; } - state = strm.state; - strm.total_in = strm.total_out = state.total = 0; - strm.msg = ''; /*Z_NULL*/ - if (state.wrap) { /* to support ill-conceived Java test suite */ - strm.adler = state.wrap & 1; - } - state.mode = HEAD; - state.last = 0; - state.havedict = 0; - state.dmax = 32768; - state.head = null/*Z_NULL*/; - state.hold = 0; - state.bits = 0; - //state.lencode = state.distcode = state.next = state.codes; - state.lencode = state.lendyn = new utils.Buf32(ENOUGH_LENS); - state.distcode = state.distdyn = new utils.Buf32(ENOUGH_DISTS); - - state.sane = 1; - state.back = -1; - //Tracev((stderr, "inflate: reset\n")); - return Z_OK; -} - -function inflateReset(strm) { - var state; - - if (!strm || !strm.state) { return Z_STREAM_ERROR; } - state = strm.state; - state.wsize = 0; - state.whave = 0; - state.wnext = 0; - return inflateResetKeep(strm); - -} - -function inflateReset2(strm, windowBits) { - var wrap; - var state; - - /* get the state */ - if (!strm || !strm.state) { return Z_STREAM_ERROR; } - state = strm.state; - - /* extract wrap request from windowBits parameter */ - if (windowBits < 0) { - wrap = 0; - windowBits = -windowBits; - } - else { - wrap = (windowBits >> 4) + 1; - if (windowBits < 48) { - windowBits &= 15; - } - } - - /* set number of window bits, free window if different */ - if (windowBits && (windowBits < 8 || windowBits > 15)) { - return Z_STREAM_ERROR; - } - if (state.window !== null && state.wbits !== windowBits) { - state.window = null; - } - - /* update state and reset the rest of it */ - state.wrap = wrap; - state.wbits = windowBits; - return inflateReset(strm); -} - -function inflateInit2(strm, windowBits) { - var ret; - var state; - - if (!strm) { return Z_STREAM_ERROR; } - //strm.msg = Z_NULL; /* in case we return an error */ - - state = new InflateState(); - - //if (state === Z_NULL) return Z_MEM_ERROR; - //Tracev((stderr, "inflate: allocated\n")); - strm.state = state; - state.window = null/*Z_NULL*/; - ret = inflateReset2(strm, windowBits); - if (ret !== Z_OK) { - strm.state = null/*Z_NULL*/; - } - return ret; -} - -function inflateInit(strm) { - return inflateInit2(strm, DEF_WBITS); -} - - -/* - Return state with length and distance decoding tables and index sizes set to - fixed code decoding. Normally this returns fixed tables from inffixed.h. - If BUILDFIXED is defined, then instead this routine builds the tables the - first time it's called, and returns those tables the first time and - thereafter. This reduces the size of the code by about 2K bytes, in - exchange for a little execution time. However, BUILDFIXED should not be - used for threaded applications, since the rewriting of the tables and virgin - may not be thread-safe. - */ -var virgin = true; - -var lenfix, distfix; // We have no pointers in JS, so keep tables separate - -function fixedtables(state) { - /* build fixed huffman tables if first call (may not be thread safe) */ - if (virgin) { - var sym; - - lenfix = new utils.Buf32(512); - distfix = new utils.Buf32(32); - - /* literal/length table */ - sym = 0; - while (sym < 144) { state.lens[sym++] = 8; } - while (sym < 256) { state.lens[sym++] = 9; } - while (sym < 280) { state.lens[sym++] = 7; } - while (sym < 288) { state.lens[sym++] = 8; } - - inflate_table(LENS, state.lens, 0, 288, lenfix, 0, state.work, { bits: 9 }); - - /* distance table */ - sym = 0; - while (sym < 32) { state.lens[sym++] = 5; } - - inflate_table(DISTS, state.lens, 0, 32, distfix, 0, state.work, { bits: 5 }); - - /* do this just once */ - virgin = false; - } - - state.lencode = lenfix; - state.lenbits = 9; - state.distcode = distfix; - state.distbits = 5; -} - - -/* - Update the window with the last wsize (normally 32K) bytes written before - returning. If window does not exist yet, create it. This is only called - when a window is already in use, or when output has been written during this - inflate call, but the end of the deflate stream has not been reached yet. - It is also called to create a window for dictionary data when a dictionary - is loaded. - - Providing output buffers larger than 32K to inflate() should provide a speed - advantage, since only the last 32K of output is copied to the sliding window - upon return from inflate(), and since all distances after the first 32K of - output will fall in the output data, making match copies simpler and faster. - The advantage may be dependent on the size of the processor's data caches. - */ -function updatewindow(strm, src, end, copy) { - var dist; - var state = strm.state; - - /* if it hasn't been done already, allocate space for the window */ - if (state.window === null) { - state.wsize = 1 << state.wbits; - state.wnext = 0; - state.whave = 0; - - state.window = new utils.Buf8(state.wsize); - } - - /* copy state->wsize or less output bytes into the circular window */ - if (copy >= state.wsize) { - utils.arraySet(state.window, src, end - state.wsize, state.wsize, 0); - state.wnext = 0; - state.whave = state.wsize; - } - else { - dist = state.wsize - state.wnext; - if (dist > copy) { - dist = copy; - } - //zmemcpy(state->window + state->wnext, end - copy, dist); - utils.arraySet(state.window, src, end - copy, dist, state.wnext); - copy -= dist; - if (copy) { - //zmemcpy(state->window, end - copy, copy); - utils.arraySet(state.window, src, end - copy, copy, 0); - state.wnext = copy; - state.whave = state.wsize; - } - else { - state.wnext += dist; - if (state.wnext === state.wsize) { state.wnext = 0; } - if (state.whave < state.wsize) { state.whave += dist; } - } - } - return 0; -} - -function inflate(strm, flush) { - var state; - var input, output; // input/output buffers - var next; /* next input INDEX */ - var put; /* next output INDEX */ - var have, left; /* available input and output */ - var hold; /* bit buffer */ - var bits; /* bits in bit buffer */ - var _in, _out; /* save starting available input and output */ - var copy; /* number of stored or match bytes to copy */ - var from; /* where to copy match bytes from */ - var from_source; - var here = 0; /* current decoding table entry */ - var here_bits, here_op, here_val; // paked "here" denormalized (JS specific) - //var last; /* parent table entry */ - var last_bits, last_op, last_val; // paked "last" denormalized (JS specific) - var len; /* length to copy for repeats, bits to drop */ - var ret; /* return code */ - var hbuf = new utils.Buf8(4); /* buffer for gzip header crc calculation */ - var opts; - - var n; // temporary var for NEED_BITS - - var order = /* permutation of code lengths */ - [ 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 ]; - - - if (!strm || !strm.state || !strm.output || - (!strm.input && strm.avail_in !== 0)) { - return Z_STREAM_ERROR; - } - - state = strm.state; - if (state.mode === TYPE) { state.mode = TYPEDO; } /* skip check */ - - - //--- LOAD() --- - put = strm.next_out; - output = strm.output; - left = strm.avail_out; - next = strm.next_in; - input = strm.input; - have = strm.avail_in; - hold = state.hold; - bits = state.bits; - //--- - - _in = have; - _out = left; - ret = Z_OK; - - inf_leave: // goto emulation - for (;;) { - switch (state.mode) { - case HEAD: - if (state.wrap === 0) { - state.mode = TYPEDO; - break; - } - //=== NEEDBITS(16); - while (bits < 16) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - if ((state.wrap & 2) && hold === 0x8b1f) { /* gzip header */ - state.check = 0/*crc32(0L, Z_NULL, 0)*/; - //=== CRC2(state.check, hold); - hbuf[0] = hold & 0xff; - hbuf[1] = (hold >>> 8) & 0xff; - state.check = crc32(state.check, hbuf, 2, 0); - //===// - - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - state.mode = FLAGS; - break; - } - state.flags = 0; /* expect zlib header */ - if (state.head) { - state.head.done = false; - } - if (!(state.wrap & 1) || /* check if zlib header allowed */ - (((hold & 0xff)/*BITS(8)*/ << 8) + (hold >> 8)) % 31) { - strm.msg = 'incorrect header check'; - state.mode = BAD; - break; - } - if ((hold & 0x0f)/*BITS(4)*/ !== Z_DEFLATED) { - strm.msg = 'unknown compression method'; - state.mode = BAD; - break; - } - //--- DROPBITS(4) ---// - hold >>>= 4; - bits -= 4; - //---// - len = (hold & 0x0f)/*BITS(4)*/ + 8; - if (state.wbits === 0) { - state.wbits = len; - } - else if (len > state.wbits) { - strm.msg = 'invalid window size'; - state.mode = BAD; - break; - } - state.dmax = 1 << len; - //Tracev((stderr, "inflate: zlib header ok\n")); - strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/; - state.mode = hold & 0x200 ? DICTID : TYPE; - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - break; - case FLAGS: - //=== NEEDBITS(16); */ - while (bits < 16) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - state.flags = hold; - if ((state.flags & 0xff) !== Z_DEFLATED) { - strm.msg = 'unknown compression method'; - state.mode = BAD; - break; - } - if (state.flags & 0xe000) { - strm.msg = 'unknown header flags set'; - state.mode = BAD; - break; - } - if (state.head) { - state.head.text = ((hold >> 8) & 1); - } - if (state.flags & 0x0200) { - //=== CRC2(state.check, hold); - hbuf[0] = hold & 0xff; - hbuf[1] = (hold >>> 8) & 0xff; - state.check = crc32(state.check, hbuf, 2, 0); - //===// - } - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - state.mode = TIME; - /* falls through */ - case TIME: - //=== NEEDBITS(32); */ - while (bits < 32) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - if (state.head) { - state.head.time = hold; - } - if (state.flags & 0x0200) { - //=== CRC4(state.check, hold) - hbuf[0] = hold & 0xff; - hbuf[1] = (hold >>> 8) & 0xff; - hbuf[2] = (hold >>> 16) & 0xff; - hbuf[3] = (hold >>> 24) & 0xff; - state.check = crc32(state.check, hbuf, 4, 0); - //=== - } - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - state.mode = OS; - /* falls through */ - case OS: - //=== NEEDBITS(16); */ - while (bits < 16) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - if (state.head) { - state.head.xflags = (hold & 0xff); - state.head.os = (hold >> 8); - } - if (state.flags & 0x0200) { - //=== CRC2(state.check, hold); - hbuf[0] = hold & 0xff; - hbuf[1] = (hold >>> 8) & 0xff; - state.check = crc32(state.check, hbuf, 2, 0); - //===// - } - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - state.mode = EXLEN; - /* falls through */ - case EXLEN: - if (state.flags & 0x0400) { - //=== NEEDBITS(16); */ - while (bits < 16) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - state.length = hold; - if (state.head) { - state.head.extra_len = hold; - } - if (state.flags & 0x0200) { - //=== CRC2(state.check, hold); - hbuf[0] = hold & 0xff; - hbuf[1] = (hold >>> 8) & 0xff; - state.check = crc32(state.check, hbuf, 2, 0); - //===// - } - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - } - else if (state.head) { - state.head.extra = null/*Z_NULL*/; - } - state.mode = EXTRA; - /* falls through */ - case EXTRA: - if (state.flags & 0x0400) { - copy = state.length; - if (copy > have) { copy = have; } - if (copy) { - if (state.head) { - len = state.head.extra_len - state.length; - if (!state.head.extra) { - // Use untyped array for more convenient processing later - state.head.extra = new Array(state.head.extra_len); - } - utils.arraySet( - state.head.extra, - input, - next, - // extra field is limited to 65536 bytes - // - no need for additional size check - copy, - /*len + copy > state.head.extra_max - len ? state.head.extra_max : copy,*/ - len - ); - //zmemcpy(state.head.extra + len, next, - // len + copy > state.head.extra_max ? - // state.head.extra_max - len : copy); - } - if (state.flags & 0x0200) { - state.check = crc32(state.check, input, copy, next); - } - have -= copy; - next += copy; - state.length -= copy; - } - if (state.length) { break inf_leave; } - } - state.length = 0; - state.mode = NAME; - /* falls through */ - case NAME: - if (state.flags & 0x0800) { - if (have === 0) { break inf_leave; } - copy = 0; - do { - // TODO: 2 or 1 bytes? - len = input[next + copy++]; - /* use constant limit because in js we should not preallocate memory */ - if (state.head && len && - (state.length < 65536 /*state.head.name_max*/)) { - state.head.name += String.fromCharCode(len); - } - } while (len && copy < have); - - if (state.flags & 0x0200) { - state.check = crc32(state.check, input, copy, next); - } - have -= copy; - next += copy; - if (len) { break inf_leave; } - } - else if (state.head) { - state.head.name = null; - } - state.length = 0; - state.mode = COMMENT; - /* falls through */ - case COMMENT: - if (state.flags & 0x1000) { - if (have === 0) { break inf_leave; } - copy = 0; - do { - len = input[next + copy++]; - /* use constant limit because in js we should not preallocate memory */ - if (state.head && len && - (state.length < 65536 /*state.head.comm_max*/)) { - state.head.comment += String.fromCharCode(len); - } - } while (len && copy < have); - if (state.flags & 0x0200) { - state.check = crc32(state.check, input, copy, next); - } - have -= copy; - next += copy; - if (len) { break inf_leave; } - } - else if (state.head) { - state.head.comment = null; - } - state.mode = HCRC; - /* falls through */ - case HCRC: - if (state.flags & 0x0200) { - //=== NEEDBITS(16); */ - while (bits < 16) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - if (hold !== (state.check & 0xffff)) { - strm.msg = 'header crc mismatch'; - state.mode = BAD; - break; - } - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - } - if (state.head) { - state.head.hcrc = ((state.flags >> 9) & 1); - state.head.done = true; - } - strm.adler = state.check = 0; - state.mode = TYPE; - break; - case DICTID: - //=== NEEDBITS(32); */ - while (bits < 32) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - strm.adler = state.check = zswap32(hold); - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - state.mode = DICT; - /* falls through */ - case DICT: - if (state.havedict === 0) { - //--- RESTORE() --- - strm.next_out = put; - strm.avail_out = left; - strm.next_in = next; - strm.avail_in = have; - state.hold = hold; - state.bits = bits; - //--- - return Z_NEED_DICT; - } - strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/; - state.mode = TYPE; - /* falls through */ - case TYPE: - if (flush === Z_BLOCK || flush === Z_TREES) { break inf_leave; } - /* falls through */ - case TYPEDO: - if (state.last) { - //--- BYTEBITS() ---// - hold >>>= bits & 7; - bits -= bits & 7; - //---// - state.mode = CHECK; - break; - } - //=== NEEDBITS(3); */ - while (bits < 3) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - state.last = (hold & 0x01)/*BITS(1)*/; - //--- DROPBITS(1) ---// - hold >>>= 1; - bits -= 1; - //---// - - switch ((hold & 0x03)/*BITS(2)*/) { - case 0: /* stored block */ - //Tracev((stderr, "inflate: stored block%s\n", - // state.last ? " (last)" : "")); - state.mode = STORED; - break; - case 1: /* fixed block */ - fixedtables(state); - //Tracev((stderr, "inflate: fixed codes block%s\n", - // state.last ? " (last)" : "")); - state.mode = LEN_; /* decode codes */ - if (flush === Z_TREES) { - //--- DROPBITS(2) ---// - hold >>>= 2; - bits -= 2; - //---// - break inf_leave; - } - break; - case 2: /* dynamic block */ - //Tracev((stderr, "inflate: dynamic codes block%s\n", - // state.last ? " (last)" : "")); - state.mode = TABLE; - break; - case 3: - strm.msg = 'invalid block type'; - state.mode = BAD; - } - //--- DROPBITS(2) ---// - hold >>>= 2; - bits -= 2; - //---// - break; - case STORED: - //--- BYTEBITS() ---// /* go to byte boundary */ - hold >>>= bits & 7; - bits -= bits & 7; - //---// - //=== NEEDBITS(32); */ - while (bits < 32) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - if ((hold & 0xffff) !== ((hold >>> 16) ^ 0xffff)) { - strm.msg = 'invalid stored block lengths'; - state.mode = BAD; - break; - } - state.length = hold & 0xffff; - //Tracev((stderr, "inflate: stored length %u\n", - // state.length)); - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - state.mode = COPY_; - if (flush === Z_TREES) { break inf_leave; } - /* falls through */ - case COPY_: - state.mode = COPY; - /* falls through */ - case COPY: - copy = state.length; - if (copy) { - if (copy > have) { copy = have; } - if (copy > left) { copy = left; } - if (copy === 0) { break inf_leave; } - //--- zmemcpy(put, next, copy); --- - utils.arraySet(output, input, next, copy, put); - //---// - have -= copy; - next += copy; - left -= copy; - put += copy; - state.length -= copy; - break; - } - //Tracev((stderr, "inflate: stored end\n")); - state.mode = TYPE; - break; - case TABLE: - //=== NEEDBITS(14); */ - while (bits < 14) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - state.nlen = (hold & 0x1f)/*BITS(5)*/ + 257; - //--- DROPBITS(5) ---// - hold >>>= 5; - bits -= 5; - //---// - state.ndist = (hold & 0x1f)/*BITS(5)*/ + 1; - //--- DROPBITS(5) ---// - hold >>>= 5; - bits -= 5; - //---// - state.ncode = (hold & 0x0f)/*BITS(4)*/ + 4; - //--- DROPBITS(4) ---// - hold >>>= 4; - bits -= 4; - //---// -//#ifndef PKZIP_BUG_WORKAROUND - if (state.nlen > 286 || state.ndist > 30) { - strm.msg = 'too many length or distance symbols'; - state.mode = BAD; - break; - } -//#endif - //Tracev((stderr, "inflate: table sizes ok\n")); - state.have = 0; - state.mode = LENLENS; - /* falls through */ - case LENLENS: - while (state.have < state.ncode) { - //=== NEEDBITS(3); - while (bits < 3) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - state.lens[order[state.have++]] = (hold & 0x07);//BITS(3); - //--- DROPBITS(3) ---// - hold >>>= 3; - bits -= 3; - //---// - } - while (state.have < 19) { - state.lens[order[state.have++]] = 0; - } - // We have separate tables & no pointers. 2 commented lines below not needed. - //state.next = state.codes; - //state.lencode = state.next; - // Switch to use dynamic table - state.lencode = state.lendyn; - state.lenbits = 7; - - opts = { bits: state.lenbits }; - ret = inflate_table(CODES, state.lens, 0, 19, state.lencode, 0, state.work, opts); - state.lenbits = opts.bits; - - if (ret) { - strm.msg = 'invalid code lengths set'; - state.mode = BAD; - break; - } - //Tracev((stderr, "inflate: code lengths ok\n")); - state.have = 0; - state.mode = CODELENS; - /* falls through */ - case CODELENS: - while (state.have < state.nlen + state.ndist) { - for (;;) { - here = state.lencode[hold & ((1 << state.lenbits) - 1)];/*BITS(state.lenbits)*/ - here_bits = here >>> 24; - here_op = (here >>> 16) & 0xff; - here_val = here & 0xffff; - - if ((here_bits) <= bits) { break; } - //--- PULLBYTE() ---// - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - //---// - } - if (here_val < 16) { - //--- DROPBITS(here.bits) ---// - hold >>>= here_bits; - bits -= here_bits; - //---// - state.lens[state.have++] = here_val; - } - else { - if (here_val === 16) { - //=== NEEDBITS(here.bits + 2); - n = here_bits + 2; - while (bits < n) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - //--- DROPBITS(here.bits) ---// - hold >>>= here_bits; - bits -= here_bits; - //---// - if (state.have === 0) { - strm.msg = 'invalid bit length repeat'; - state.mode = BAD; - break; - } - len = state.lens[state.have - 1]; - copy = 3 + (hold & 0x03);//BITS(2); - //--- DROPBITS(2) ---// - hold >>>= 2; - bits -= 2; - //---// - } - else if (here_val === 17) { - //=== NEEDBITS(here.bits + 3); - n = here_bits + 3; - while (bits < n) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - //--- DROPBITS(here.bits) ---// - hold >>>= here_bits; - bits -= here_bits; - //---// - len = 0; - copy = 3 + (hold & 0x07);//BITS(3); - //--- DROPBITS(3) ---// - hold >>>= 3; - bits -= 3; - //---// - } - else { - //=== NEEDBITS(here.bits + 7); - n = here_bits + 7; - while (bits < n) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - //--- DROPBITS(here.bits) ---// - hold >>>= here_bits; - bits -= here_bits; - //---// - len = 0; - copy = 11 + (hold & 0x7f);//BITS(7); - //--- DROPBITS(7) ---// - hold >>>= 7; - bits -= 7; - //---// - } - if (state.have + copy > state.nlen + state.ndist) { - strm.msg = 'invalid bit length repeat'; - state.mode = BAD; - break; - } - while (copy--) { - state.lens[state.have++] = len; - } - } - } - - /* handle error breaks in while */ - if (state.mode === BAD) { break; } - - /* check for end-of-block code (better have one) */ - if (state.lens[256] === 0) { - strm.msg = 'invalid code -- missing end-of-block'; - state.mode = BAD; - break; - } - - /* build code tables -- note: do not change the lenbits or distbits - values here (9 and 6) without reading the comments in inftrees.h - concerning the ENOUGH constants, which depend on those values */ - state.lenbits = 9; - - opts = { bits: state.lenbits }; - ret = inflate_table(LENS, state.lens, 0, state.nlen, state.lencode, 0, state.work, opts); - // We have separate tables & no pointers. 2 commented lines below not needed. - // state.next_index = opts.table_index; - state.lenbits = opts.bits; - // state.lencode = state.next; - - if (ret) { - strm.msg = 'invalid literal/lengths set'; - state.mode = BAD; - break; - } - - state.distbits = 6; - //state.distcode.copy(state.codes); - // Switch to use dynamic table - state.distcode = state.distdyn; - opts = { bits: state.distbits }; - ret = inflate_table(DISTS, state.lens, state.nlen, state.ndist, state.distcode, 0, state.work, opts); - // We have separate tables & no pointers. 2 commented lines below not needed. - // state.next_index = opts.table_index; - state.distbits = opts.bits; - // state.distcode = state.next; - - if (ret) { - strm.msg = 'invalid distances set'; - state.mode = BAD; - break; - } - //Tracev((stderr, 'inflate: codes ok\n')); - state.mode = LEN_; - if (flush === Z_TREES) { break inf_leave; } - /* falls through */ - case LEN_: - state.mode = LEN; - /* falls through */ - case LEN: - if (have >= 6 && left >= 258) { - //--- RESTORE() --- - strm.next_out = put; - strm.avail_out = left; - strm.next_in = next; - strm.avail_in = have; - state.hold = hold; - state.bits = bits; - //--- - inflate_fast(strm, _out); - //--- LOAD() --- - put = strm.next_out; - output = strm.output; - left = strm.avail_out; - next = strm.next_in; - input = strm.input; - have = strm.avail_in; - hold = state.hold; - bits = state.bits; - //--- - - if (state.mode === TYPE) { - state.back = -1; - } - break; - } - state.back = 0; - for (;;) { - here = state.lencode[hold & ((1 << state.lenbits) - 1)]; /*BITS(state.lenbits)*/ - here_bits = here >>> 24; - here_op = (here >>> 16) & 0xff; - here_val = here & 0xffff; - - if (here_bits <= bits) { break; } - //--- PULLBYTE() ---// - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - //---// - } - if (here_op && (here_op & 0xf0) === 0) { - last_bits = here_bits; - last_op = here_op; - last_val = here_val; - for (;;) { - here = state.lencode[last_val + - ((hold & ((1 << (last_bits + last_op)) - 1))/*BITS(last.bits + last.op)*/ >> last_bits)]; - here_bits = here >>> 24; - here_op = (here >>> 16) & 0xff; - here_val = here & 0xffff; - - if ((last_bits + here_bits) <= bits) { break; } - //--- PULLBYTE() ---// - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - //---// - } - //--- DROPBITS(last.bits) ---// - hold >>>= last_bits; - bits -= last_bits; - //---// - state.back += last_bits; - } - //--- DROPBITS(here.bits) ---// - hold >>>= here_bits; - bits -= here_bits; - //---// - state.back += here_bits; - state.length = here_val; - if (here_op === 0) { - //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ? - // "inflate: literal '%c'\n" : - // "inflate: literal 0x%02x\n", here.val)); - state.mode = LIT; - break; - } - if (here_op & 32) { - //Tracevv((stderr, "inflate: end of block\n")); - state.back = -1; - state.mode = TYPE; - break; - } - if (here_op & 64) { - strm.msg = 'invalid literal/length code'; - state.mode = BAD; - break; - } - state.extra = here_op & 15; - state.mode = LENEXT; - /* falls through */ - case LENEXT: - if (state.extra) { - //=== NEEDBITS(state.extra); - n = state.extra; - while (bits < n) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - state.length += hold & ((1 << state.extra) - 1)/*BITS(state.extra)*/; - //--- DROPBITS(state.extra) ---// - hold >>>= state.extra; - bits -= state.extra; - //---// - state.back += state.extra; - } - //Tracevv((stderr, "inflate: length %u\n", state.length)); - state.was = state.length; - state.mode = DIST; - /* falls through */ - case DIST: - for (;;) { - here = state.distcode[hold & ((1 << state.distbits) - 1)];/*BITS(state.distbits)*/ - here_bits = here >>> 24; - here_op = (here >>> 16) & 0xff; - here_val = here & 0xffff; - - if ((here_bits) <= bits) { break; } - //--- PULLBYTE() ---// - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - //---// - } - if ((here_op & 0xf0) === 0) { - last_bits = here_bits; - last_op = here_op; - last_val = here_val; - for (;;) { - here = state.distcode[last_val + - ((hold & ((1 << (last_bits + last_op)) - 1))/*BITS(last.bits + last.op)*/ >> last_bits)]; - here_bits = here >>> 24; - here_op = (here >>> 16) & 0xff; - here_val = here & 0xffff; - - if ((last_bits + here_bits) <= bits) { break; } - //--- PULLBYTE() ---// - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - //---// - } - //--- DROPBITS(last.bits) ---// - hold >>>= last_bits; - bits -= last_bits; - //---// - state.back += last_bits; - } - //--- DROPBITS(here.bits) ---// - hold >>>= here_bits; - bits -= here_bits; - //---// - state.back += here_bits; - if (here_op & 64) { - strm.msg = 'invalid distance code'; - state.mode = BAD; - break; - } - state.offset = here_val; - state.extra = (here_op) & 15; - state.mode = DISTEXT; - /* falls through */ - case DISTEXT: - if (state.extra) { - //=== NEEDBITS(state.extra); - n = state.extra; - while (bits < n) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - state.offset += hold & ((1 << state.extra) - 1)/*BITS(state.extra)*/; - //--- DROPBITS(state.extra) ---// - hold >>>= state.extra; - bits -= state.extra; - //---// - state.back += state.extra; - } -//#ifdef INFLATE_STRICT - if (state.offset > state.dmax) { - strm.msg = 'invalid distance too far back'; - state.mode = BAD; - break; - } -//#endif - //Tracevv((stderr, "inflate: distance %u\n", state.offset)); - state.mode = MATCH; - /* falls through */ - case MATCH: - if (left === 0) { break inf_leave; } - copy = _out - left; - if (state.offset > copy) { /* copy from window */ - copy = state.offset - copy; - if (copy > state.whave) { - if (state.sane) { - strm.msg = 'invalid distance too far back'; - state.mode = BAD; - break; - } -// (!) This block is disabled in zlib defaults, -// don't enable it for binary compatibility -//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR -// Trace((stderr, "inflate.c too far\n")); -// copy -= state.whave; -// if (copy > state.length) { copy = state.length; } -// if (copy > left) { copy = left; } -// left -= copy; -// state.length -= copy; -// do { -// output[put++] = 0; -// } while (--copy); -// if (state.length === 0) { state.mode = LEN; } -// break; -//#endif - } - if (copy > state.wnext) { - copy -= state.wnext; - from = state.wsize - copy; - } - else { - from = state.wnext - copy; - } - if (copy > state.length) { copy = state.length; } - from_source = state.window; - } - else { /* copy from output */ - from_source = output; - from = put - state.offset; - copy = state.length; - } - if (copy > left) { copy = left; } - left -= copy; - state.length -= copy; - do { - output[put++] = from_source[from++]; - } while (--copy); - if (state.length === 0) { state.mode = LEN; } - break; - case LIT: - if (left === 0) { break inf_leave; } - output[put++] = state.length; - left--; - state.mode = LEN; - break; - case CHECK: - if (state.wrap) { - //=== NEEDBITS(32); - while (bits < 32) { - if (have === 0) { break inf_leave; } - have--; - // Use '|' instead of '+' to make sure that result is signed - hold |= input[next++] << bits; - bits += 8; - } - //===// - _out -= left; - strm.total_out += _out; - state.total += _out; - if (_out) { - strm.adler = state.check = - /*UPDATE(state.check, put - _out, _out);*/ - (state.flags ? crc32(state.check, output, _out, put - _out) : adler32(state.check, output, _out, put - _out)); - - } - _out = left; - // NB: crc32 stored as signed 32-bit int, zswap32 returns signed too - if ((state.flags ? hold : zswap32(hold)) !== state.check) { - strm.msg = 'incorrect data check'; - state.mode = BAD; - break; - } - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - //Tracev((stderr, "inflate: check matches trailer\n")); - } - state.mode = LENGTH; - /* falls through */ - case LENGTH: - if (state.wrap && state.flags) { - //=== NEEDBITS(32); - while (bits < 32) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - if (hold !== (state.total & 0xffffffff)) { - strm.msg = 'incorrect length check'; - state.mode = BAD; - break; - } - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - //Tracev((stderr, "inflate: length matches trailer\n")); - } - state.mode = DONE; - /* falls through */ - case DONE: - ret = Z_STREAM_END; - break inf_leave; - case BAD: - ret = Z_DATA_ERROR; - break inf_leave; - case MEM: - return Z_MEM_ERROR; - case SYNC: - /* falls through */ - default: - return Z_STREAM_ERROR; - } - } - - // inf_leave <- here is real place for "goto inf_leave", emulated via "break inf_leave" - - /* - Return from inflate(), updating the total counts and the check value. - If there was no progress during the inflate() call, return a buffer - error. Call updatewindow() to create and/or update the window state. - Note: a memory error from inflate() is non-recoverable. - */ - - //--- RESTORE() --- - strm.next_out = put; - strm.avail_out = left; - strm.next_in = next; - strm.avail_in = have; - state.hold = hold; - state.bits = bits; - //--- - - if (state.wsize || (_out !== strm.avail_out && state.mode < BAD && - (state.mode < CHECK || flush !== Z_FINISH))) { - if (updatewindow(strm, strm.output, strm.next_out, _out - strm.avail_out)) { - state.mode = MEM; - return Z_MEM_ERROR; - } - } - _in -= strm.avail_in; - _out -= strm.avail_out; - strm.total_in += _in; - strm.total_out += _out; - state.total += _out; - if (state.wrap && _out) { - strm.adler = state.check = /*UPDATE(state.check, strm.next_out - _out, _out);*/ - (state.flags ? crc32(state.check, output, _out, strm.next_out - _out) : adler32(state.check, output, _out, strm.next_out - _out)); - } - strm.data_type = state.bits + (state.last ? 64 : 0) + - (state.mode === TYPE ? 128 : 0) + - (state.mode === LEN_ || state.mode === COPY_ ? 256 : 0); - if (((_in === 0 && _out === 0) || flush === Z_FINISH) && ret === Z_OK) { - ret = Z_BUF_ERROR; - } - return ret; -} - -function inflateEnd(strm) { - - if (!strm || !strm.state /*|| strm->zfree == (free_func)0*/) { - return Z_STREAM_ERROR; - } - - var state = strm.state; - if (state.window) { - state.window = null; - } - strm.state = null; - return Z_OK; -} - -function inflateGetHeader(strm, head) { - var state; - - /* check state */ - if (!strm || !strm.state) { return Z_STREAM_ERROR; } - state = strm.state; - if ((state.wrap & 2) === 0) { return Z_STREAM_ERROR; } - - /* save header structure */ - state.head = head; - head.done = false; - return Z_OK; -} - -function inflateSetDictionary(strm, dictionary) { - var dictLength = dictionary.length; - - var state; - var dictid; - var ret; - - /* check state */ - if (!strm /* == Z_NULL */ || !strm.state /* == Z_NULL */) { return Z_STREAM_ERROR; } - state = strm.state; - - if (state.wrap !== 0 && state.mode !== DICT) { - return Z_STREAM_ERROR; - } - - /* check for correct dictionary identifier */ - if (state.mode === DICT) { - dictid = 1; /* adler32(0, null, 0)*/ - /* dictid = adler32(dictid, dictionary, dictLength); */ - dictid = adler32(dictid, dictionary, dictLength, 0); - if (dictid !== state.check) { - return Z_DATA_ERROR; - } - } - /* copy dictionary to window using updatewindow(), which will amend the - existing dictionary if appropriate */ - ret = updatewindow(strm, dictionary, dictLength, dictLength); - if (ret) { - state.mode = MEM; - return Z_MEM_ERROR; - } - state.havedict = 1; - // Tracev((stderr, "inflate: dictionary set\n")); - return Z_OK; -} - -exports.inflateReset = inflateReset; -exports.inflateReset2 = inflateReset2; -exports.inflateResetKeep = inflateResetKeep; -exports.inflateInit = inflateInit; -exports.inflateInit2 = inflateInit2; -exports.inflate = inflate; -exports.inflateEnd = inflateEnd; -exports.inflateGetHeader = inflateGetHeader; -exports.inflateSetDictionary = inflateSetDictionary; -exports.inflateInfo = 'pako inflate (from Nodeca project)'; - -/* Not implemented -exports.inflateCopy = inflateCopy; -exports.inflateGetDictionary = inflateGetDictionary; -exports.inflateMark = inflateMark; -exports.inflatePrime = inflatePrime; -exports.inflateSync = inflateSync; -exports.inflateSyncPoint = inflateSyncPoint; -exports.inflateUndermine = inflateUndermine; -*/ - -},{"../utils/common":3,"./adler32":5,"./crc32":7,"./inffast":10,"./inftrees":12}],12:[function(require,module,exports){ -'use strict'; - -// (C) 1995-2013 Jean-loup Gailly and Mark Adler -// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would be -// appreciated but is not required. -// 2. Altered source versions must be plainly marked as such, and must not be -// misrepresented as being the original software. -// 3. This notice may not be removed or altered from any source distribution. - -var utils = require('../utils/common'); - -var MAXBITS = 15; -var ENOUGH_LENS = 852; -var ENOUGH_DISTS = 592; -//var ENOUGH = (ENOUGH_LENS+ENOUGH_DISTS); - -var CODES = 0; -var LENS = 1; -var DISTS = 2; - -var lbase = [ /* Length codes 257..285 base */ - 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31, - 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0 -]; - -var lext = [ /* Length codes 257..285 extra */ - 16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18, - 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 72, 78 -]; - -var dbase = [ /* Distance codes 0..29 base */ - 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, - 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145, - 8193, 12289, 16385, 24577, 0, 0 -]; - -var dext = [ /* Distance codes 0..29 extra */ - 16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, - 23, 23, 24, 24, 25, 25, 26, 26, 27, 27, - 28, 28, 29, 29, 64, 64 -]; - -module.exports = function inflate_table(type, lens, lens_index, codes, table, table_index, work, opts) -{ - var bits = opts.bits; - //here = opts.here; /* table entry for duplication */ - - var len = 0; /* a code's length in bits */ - var sym = 0; /* index of code symbols */ - var min = 0, max = 0; /* minimum and maximum code lengths */ - var root = 0; /* number of index bits for root table */ - var curr = 0; /* number of index bits for current table */ - var drop = 0; /* code bits to drop for sub-table */ - var left = 0; /* number of prefix codes available */ - var used = 0; /* code entries in table used */ - var huff = 0; /* Huffman code */ - var incr; /* for incrementing code, index */ - var fill; /* index for replicating entries */ - var low; /* low bits for current root entry */ - var mask; /* mask for low root bits */ - var next; /* next available space in table */ - var base = null; /* base value table to use */ - var base_index = 0; -// var shoextra; /* extra bits table to use */ - var end; /* use base and extra for symbol > end */ - var count = new utils.Buf16(MAXBITS + 1); //[MAXBITS+1]; /* number of codes of each length */ - var offs = new utils.Buf16(MAXBITS + 1); //[MAXBITS+1]; /* offsets in table for each length */ - var extra = null; - var extra_index = 0; - - var here_bits, here_op, here_val; - - /* - Process a set of code lengths to create a canonical Huffman code. The - code lengths are lens[0..codes-1]. Each length corresponds to the - symbols 0..codes-1. The Huffman code is generated by first sorting the - symbols by length from short to long, and retaining the symbol order - for codes with equal lengths. Then the code starts with all zero bits - for the first code of the shortest length, and the codes are integer - increments for the same length, and zeros are appended as the length - increases. For the deflate format, these bits are stored backwards - from their more natural integer increment ordering, and so when the - decoding tables are built in the large loop below, the integer codes - are incremented backwards. - - This routine assumes, but does not check, that all of the entries in - lens[] are in the range 0..MAXBITS. The caller must assure this. - 1..MAXBITS is interpreted as that code length. zero means that that - symbol does not occur in this code. - - The codes are sorted by computing a count of codes for each length, - creating from that a table of starting indices for each length in the - sorted table, and then entering the symbols in order in the sorted - table. The sorted table is work[], with that space being provided by - the caller. - - The length counts are used for other purposes as well, i.e. finding - the minimum and maximum length codes, determining if there are any - codes at all, checking for a valid set of lengths, and looking ahead - at length counts to determine sub-table sizes when building the - decoding tables. - */ - - /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */ - for (len = 0; len <= MAXBITS; len++) { - count[len] = 0; - } - for (sym = 0; sym < codes; sym++) { - count[lens[lens_index + sym]]++; - } - - /* bound code lengths, force root to be within code lengths */ - root = bits; - for (max = MAXBITS; max >= 1; max--) { - if (count[max] !== 0) { break; } - } - if (root > max) { - root = max; - } - if (max === 0) { /* no symbols to code at all */ - //table.op[opts.table_index] = 64; //here.op = (var char)64; /* invalid code marker */ - //table.bits[opts.table_index] = 1; //here.bits = (var char)1; - //table.val[opts.table_index++] = 0; //here.val = (var short)0; - table[table_index++] = (1 << 24) | (64 << 16) | 0; - - - //table.op[opts.table_index] = 64; - //table.bits[opts.table_index] = 1; - //table.val[opts.table_index++] = 0; - table[table_index++] = (1 << 24) | (64 << 16) | 0; - - opts.bits = 1; - return 0; /* no symbols, but wait for decoding to report error */ - } - for (min = 1; min < max; min++) { - if (count[min] !== 0) { break; } - } - if (root < min) { - root = min; - } - - /* check for an over-subscribed or incomplete set of lengths */ - left = 1; - for (len = 1; len <= MAXBITS; len++) { - left <<= 1; - left -= count[len]; - if (left < 0) { - return -1; - } /* over-subscribed */ - } - if (left > 0 && (type === CODES || max !== 1)) { - return -1; /* incomplete set */ - } - - /* generate offsets into symbol table for each length for sorting */ - offs[1] = 0; - for (len = 1; len < MAXBITS; len++) { - offs[len + 1] = offs[len] + count[len]; - } - - /* sort symbols by length, by symbol order within each length */ - for (sym = 0; sym < codes; sym++) { - if (lens[lens_index + sym] !== 0) { - work[offs[lens[lens_index + sym]]++] = sym; - } - } - - /* - Create and fill in decoding tables. In this loop, the table being - filled is at next and has curr index bits. The code being used is huff - with length len. That code is converted to an index by dropping drop - bits off of the bottom. For codes where len is less than drop + curr, - those top drop + curr - len bits are incremented through all values to - fill the table with replicated entries. - - root is the number of index bits for the root table. When len exceeds - root, sub-tables are created pointed to by the root entry with an index - of the low root bits of huff. This is saved in low to check for when a - new sub-table should be started. drop is zero when the root table is - being filled, and drop is root when sub-tables are being filled. - - When a new sub-table is needed, it is necessary to look ahead in the - code lengths to determine what size sub-table is needed. The length - counts are used for this, and so count[] is decremented as codes are - entered in the tables. - - used keeps track of how many table entries have been allocated from the - provided *table space. It is checked for LENS and DIST tables against - the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in - the initial root table size constants. See the comments in inftrees.h - for more information. - - sym increments through all symbols, and the loop terminates when - all codes of length max, i.e. all codes, have been processed. This - routine permits incomplete codes, so another loop after this one fills - in the rest of the decoding tables with invalid code markers. - */ - - /* set up for code type */ - // poor man optimization - use if-else instead of switch, - // to avoid deopts in old v8 - if (type === CODES) { - base = extra = work; /* dummy value--not used */ - end = 19; - - } else if (type === LENS) { - base = lbase; - base_index -= 257; - extra = lext; - extra_index -= 257; - end = 256; - - } else { /* DISTS */ - base = dbase; - extra = dext; - end = -1; - } - - /* initialize opts for loop */ - huff = 0; /* starting code */ - sym = 0; /* starting code symbol */ - len = min; /* starting code length */ - next = table_index; /* current table to fill in */ - curr = root; /* current table index bits */ - drop = 0; /* current bits to drop from code for index */ - low = -1; /* trigger new sub-table when len > root */ - used = 1 << root; /* use root table entries */ - mask = used - 1; /* mask for comparing low */ - - /* check available table space */ - if ((type === LENS && used > ENOUGH_LENS) || - (type === DISTS && used > ENOUGH_DISTS)) { - return 1; - } - - /* process all codes and make table entries */ - for (;;) { - /* create table entry */ - here_bits = len - drop; - if (work[sym] < end) { - here_op = 0; - here_val = work[sym]; - } - else if (work[sym] > end) { - here_op = extra[extra_index + work[sym]]; - here_val = base[base_index + work[sym]]; - } - else { - here_op = 32 + 64; /* end of block */ - here_val = 0; - } - - /* replicate for those indices with low len bits equal to huff */ - incr = 1 << (len - drop); - fill = 1 << curr; - min = fill; /* save offset to next table */ - do { - fill -= incr; - table[next + (huff >> drop) + fill] = (here_bits << 24) | (here_op << 16) | here_val |0; - } while (fill !== 0); - - /* backwards increment the len-bit code huff */ - incr = 1 << (len - 1); - while (huff & incr) { - incr >>= 1; - } - if (incr !== 0) { - huff &= incr - 1; - huff += incr; - } else { - huff = 0; - } - - /* go to next symbol, update count, len */ - sym++; - if (--count[len] === 0) { - if (len === max) { break; } - len = lens[lens_index + work[sym]]; - } - - /* create new sub-table if needed */ - if (len > root && (huff & mask) !== low) { - /* if first time, transition to sub-tables */ - if (drop === 0) { - drop = root; - } - - /* increment past last table */ - next += min; /* here min is 1 << curr */ - - /* determine length of next table */ - curr = len - drop; - left = 1 << curr; - while (curr + drop < max) { - left -= count[curr + drop]; - if (left <= 0) { break; } - curr++; - left <<= 1; - } - - /* check for enough space */ - used += 1 << curr; - if ((type === LENS && used > ENOUGH_LENS) || - (type === DISTS && used > ENOUGH_DISTS)) { - return 1; - } - - /* point entry in root table to sub-table */ - low = huff & mask; - /*table.op[low] = curr; - table.bits[low] = root; - table.val[low] = next - opts.table_index;*/ - table[low] = (root << 24) | (curr << 16) | (next - table_index) |0; - } - } - - /* fill in remaining table entry if code is incomplete (guaranteed to have - at most one remaining entry, since if the code is incomplete, the - maximum code length that was allowed to get this far is one bit) */ - if (huff !== 0) { - //table.op[next + huff] = 64; /* invalid code marker */ - //table.bits[next + huff] = len - drop; - //table.val[next + huff] = 0; - table[next + huff] = ((len - drop) << 24) | (64 << 16) |0; - } - - /* set return parameters */ - //opts.table_index += used; - opts.bits = root; - return 0; -}; - -},{"../utils/common":3}],13:[function(require,module,exports){ -'use strict'; - -// (C) 1995-2013 Jean-loup Gailly and Mark Adler -// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would be -// appreciated but is not required. -// 2. Altered source versions must be plainly marked as such, and must not be -// misrepresented as being the original software. -// 3. This notice may not be removed or altered from any source distribution. - -module.exports = { - 2: 'need dictionary', /* Z_NEED_DICT 2 */ - 1: 'stream end', /* Z_STREAM_END 1 */ - 0: '', /* Z_OK 0 */ - '-1': 'file error', /* Z_ERRNO (-1) */ - '-2': 'stream error', /* Z_STREAM_ERROR (-2) */ - '-3': 'data error', /* Z_DATA_ERROR (-3) */ - '-4': 'insufficient memory', /* Z_MEM_ERROR (-4) */ - '-5': 'buffer error', /* Z_BUF_ERROR (-5) */ - '-6': 'incompatible version' /* Z_VERSION_ERROR (-6) */ -}; - -},{}],14:[function(require,module,exports){ -'use strict'; - -// (C) 1995-2013 Jean-loup Gailly and Mark Adler -// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would be -// appreciated but is not required. -// 2. Altered source versions must be plainly marked as such, and must not be -// misrepresented as being the original software. -// 3. This notice may not be removed or altered from any source distribution. - -/* eslint-disable space-unary-ops */ - -var utils = require('../utils/common'); - -/* Public constants ==========================================================*/ -/* ===========================================================================*/ - - -//var Z_FILTERED = 1; -//var Z_HUFFMAN_ONLY = 2; -//var Z_RLE = 3; -var Z_FIXED = 4; -//var Z_DEFAULT_STRATEGY = 0; - -/* Possible values of the data_type field (though see inflate()) */ -var Z_BINARY = 0; -var Z_TEXT = 1; -//var Z_ASCII = 1; // = Z_TEXT -var Z_UNKNOWN = 2; - -/*============================================================================*/ - - -function zero(buf) { var len = buf.length; while (--len >= 0) { buf[len] = 0; } } - -// From zutil.h - -var STORED_BLOCK = 0; -var STATIC_TREES = 1; -var DYN_TREES = 2; -/* The three kinds of block type */ - -var MIN_MATCH = 3; -var MAX_MATCH = 258; -/* The minimum and maximum match lengths */ - -// From deflate.h -/* =========================================================================== - * Internal compression state. - */ - -var LENGTH_CODES = 29; -/* number of length codes, not counting the special END_BLOCK code */ - -var LITERALS = 256; -/* number of literal bytes 0..255 */ - -var L_CODES = LITERALS + 1 + LENGTH_CODES; -/* number of Literal or Length codes, including the END_BLOCK code */ - -var D_CODES = 30; -/* number of distance codes */ - -var BL_CODES = 19; -/* number of codes used to transfer the bit lengths */ - -var HEAP_SIZE = 2 * L_CODES + 1; -/* maximum heap size */ - -var MAX_BITS = 15; -/* All codes must not exceed MAX_BITS bits */ - -var Buf_size = 16; -/* size of bit buffer in bi_buf */ - - -/* =========================================================================== - * Constants - */ - -var MAX_BL_BITS = 7; -/* Bit length codes must not exceed MAX_BL_BITS bits */ - -var END_BLOCK = 256; -/* end of block literal code */ - -var REP_3_6 = 16; -/* repeat previous bit length 3-6 times (2 bits of repeat count) */ - -var REPZ_3_10 = 17; -/* repeat a zero length 3-10 times (3 bits of repeat count) */ - -var REPZ_11_138 = 18; -/* repeat a zero length 11-138 times (7 bits of repeat count) */ - -/* eslint-disable comma-spacing,array-bracket-spacing */ -var extra_lbits = /* extra bits for each length code */ - [0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0]; - -var extra_dbits = /* extra bits for each distance code */ - [0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13]; - -var extra_blbits = /* extra bits for each bit length code */ - [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7]; - -var bl_order = - [16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15]; -/* eslint-enable comma-spacing,array-bracket-spacing */ - -/* The lengths of the bit length codes are sent in order of decreasing - * probability, to avoid transmitting the lengths for unused bit length codes. - */ - -/* =========================================================================== - * Local data. These are initialized only once. - */ - -// We pre-fill arrays with 0 to avoid uninitialized gaps - -var DIST_CODE_LEN = 512; /* see definition of array dist_code below */ - -// !!!! Use flat array instead of structure, Freq = i*2, Len = i*2+1 -var static_ltree = new Array((L_CODES + 2) * 2); -zero(static_ltree); -/* The static literal tree. Since the bit lengths are imposed, there is no - * need for the L_CODES extra codes used during heap construction. However - * The codes 286 and 287 are needed to build a canonical tree (see _tr_init - * below). - */ - -var static_dtree = new Array(D_CODES * 2); -zero(static_dtree); -/* The static distance tree. (Actually a trivial tree since all codes use - * 5 bits.) - */ - -var _dist_code = new Array(DIST_CODE_LEN); -zero(_dist_code); -/* Distance codes. The first 256 values correspond to the distances - * 3 .. 258, the last 256 values correspond to the top 8 bits of - * the 15 bit distances. - */ - -var _length_code = new Array(MAX_MATCH - MIN_MATCH + 1); -zero(_length_code); -/* length code for each normalized match length (0 == MIN_MATCH) */ - -var base_length = new Array(LENGTH_CODES); -zero(base_length); -/* First normalized length for each code (0 = MIN_MATCH) */ - -var base_dist = new Array(D_CODES); -zero(base_dist); -/* First normalized distance for each code (0 = distance of 1) */ - - -function StaticTreeDesc(static_tree, extra_bits, extra_base, elems, max_length) { - - this.static_tree = static_tree; /* static tree or NULL */ - this.extra_bits = extra_bits; /* extra bits for each code or NULL */ - this.extra_base = extra_base; /* base index for extra_bits */ - this.elems = elems; /* max number of elements in the tree */ - this.max_length = max_length; /* max bit length for the codes */ - - // show if `static_tree` has data or dummy - needed for monomorphic objects - this.has_stree = static_tree && static_tree.length; -} - - -var static_l_desc; -var static_d_desc; -var static_bl_desc; - - -function TreeDesc(dyn_tree, stat_desc) { - this.dyn_tree = dyn_tree; /* the dynamic tree */ - this.max_code = 0; /* largest code with non zero frequency */ - this.stat_desc = stat_desc; /* the corresponding static tree */ -} - - - -function d_code(dist) { - return dist < 256 ? _dist_code[dist] : _dist_code[256 + (dist >>> 7)]; -} - - -/* =========================================================================== - * Output a short LSB first on the stream. - * IN assertion: there is enough room in pendingBuf. - */ -function put_short(s, w) { -// put_byte(s, (uch)((w) & 0xff)); -// put_byte(s, (uch)((ush)(w) >> 8)); - s.pending_buf[s.pending++] = (w) & 0xff; - s.pending_buf[s.pending++] = (w >>> 8) & 0xff; -} - - -/* =========================================================================== - * Send a value on a given number of bits. - * IN assertion: length <= 16 and value fits in length bits. - */ -function send_bits(s, value, length) { - if (s.bi_valid > (Buf_size - length)) { - s.bi_buf |= (value << s.bi_valid) & 0xffff; - put_short(s, s.bi_buf); - s.bi_buf = value >> (Buf_size - s.bi_valid); - s.bi_valid += length - Buf_size; - } else { - s.bi_buf |= (value << s.bi_valid) & 0xffff; - s.bi_valid += length; - } -} - - -function send_code(s, c, tree) { - send_bits(s, tree[c * 2]/*.Code*/, tree[c * 2 + 1]/*.Len*/); -} - - -/* =========================================================================== - * Reverse the first len bits of a code, using straightforward code (a faster - * method would use a table) - * IN assertion: 1 <= len <= 15 - */ -function bi_reverse(code, len) { - var res = 0; - do { - res |= code & 1; - code >>>= 1; - res <<= 1; - } while (--len > 0); - return res >>> 1; -} - - -/* =========================================================================== - * Flush the bit buffer, keeping at most 7 bits in it. - */ -function bi_flush(s) { - if (s.bi_valid === 16) { - put_short(s, s.bi_buf); - s.bi_buf = 0; - s.bi_valid = 0; - - } else if (s.bi_valid >= 8) { - s.pending_buf[s.pending++] = s.bi_buf & 0xff; - s.bi_buf >>= 8; - s.bi_valid -= 8; - } -} - - -/* =========================================================================== - * Compute the optimal bit lengths for a tree and update the total bit length - * for the current block. - * IN assertion: the fields freq and dad are set, heap[heap_max] and - * above are the tree nodes sorted by increasing frequency. - * OUT assertions: the field len is set to the optimal bit length, the - * array bl_count contains the frequencies for each bit length. - * The length opt_len is updated; static_len is also updated if stree is - * not null. - */ -function gen_bitlen(s, desc) -// deflate_state *s; -// tree_desc *desc; /* the tree descriptor */ -{ - var tree = desc.dyn_tree; - var max_code = desc.max_code; - var stree = desc.stat_desc.static_tree; - var has_stree = desc.stat_desc.has_stree; - var extra = desc.stat_desc.extra_bits; - var base = desc.stat_desc.extra_base; - var max_length = desc.stat_desc.max_length; - var h; /* heap index */ - var n, m; /* iterate over the tree elements */ - var bits; /* bit length */ - var xbits; /* extra bits */ - var f; /* frequency */ - var overflow = 0; /* number of elements with bit length too large */ - - for (bits = 0; bits <= MAX_BITS; bits++) { - s.bl_count[bits] = 0; - } - - /* In a first pass, compute the optimal bit lengths (which may - * overflow in the case of the bit length tree). - */ - tree[s.heap[s.heap_max] * 2 + 1]/*.Len*/ = 0; /* root of the heap */ - - for (h = s.heap_max + 1; h < HEAP_SIZE; h++) { - n = s.heap[h]; - bits = tree[tree[n * 2 + 1]/*.Dad*/ * 2 + 1]/*.Len*/ + 1; - if (bits > max_length) { - bits = max_length; - overflow++; - } - tree[n * 2 + 1]/*.Len*/ = bits; - /* We overwrite tree[n].Dad which is no longer needed */ - - if (n > max_code) { continue; } /* not a leaf node */ - - s.bl_count[bits]++; - xbits = 0; - if (n >= base) { - xbits = extra[n - base]; - } - f = tree[n * 2]/*.Freq*/; - s.opt_len += f * (bits + xbits); - if (has_stree) { - s.static_len += f * (stree[n * 2 + 1]/*.Len*/ + xbits); - } - } - if (overflow === 0) { return; } - - // Trace((stderr,"\nbit length overflow\n")); - /* This happens for example on obj2 and pic of the Calgary corpus */ - - /* Find the first bit length which could increase: */ - do { - bits = max_length - 1; - while (s.bl_count[bits] === 0) { bits--; } - s.bl_count[bits]--; /* move one leaf down the tree */ - s.bl_count[bits + 1] += 2; /* move one overflow item as its brother */ - s.bl_count[max_length]--; - /* The brother of the overflow item also moves one step up, - * but this does not affect bl_count[max_length] - */ - overflow -= 2; - } while (overflow > 0); - - /* Now recompute all bit lengths, scanning in increasing frequency. - * h is still equal to HEAP_SIZE. (It is simpler to reconstruct all - * lengths instead of fixing only the wrong ones. This idea is taken - * from 'ar' written by Haruhiko Okumura.) - */ - for (bits = max_length; bits !== 0; bits--) { - n = s.bl_count[bits]; - while (n !== 0) { - m = s.heap[--h]; - if (m > max_code) { continue; } - if (tree[m * 2 + 1]/*.Len*/ !== bits) { - // Trace((stderr,"code %d bits %d->%d\n", m, tree[m].Len, bits)); - s.opt_len += (bits - tree[m * 2 + 1]/*.Len*/) * tree[m * 2]/*.Freq*/; - tree[m * 2 + 1]/*.Len*/ = bits; - } - n--; - } - } -} - - -/* =========================================================================== - * Generate the codes for a given tree and bit counts (which need not be - * optimal). - * IN assertion: the array bl_count contains the bit length statistics for - * the given tree and the field len is set for all tree elements. - * OUT assertion: the field code is set for all tree elements of non - * zero code length. - */ -function gen_codes(tree, max_code, bl_count) -// ct_data *tree; /* the tree to decorate */ -// int max_code; /* largest code with non zero frequency */ -// ushf *bl_count; /* number of codes at each bit length */ -{ - var next_code = new Array(MAX_BITS + 1); /* next code value for each bit length */ - var code = 0; /* running code value */ - var bits; /* bit index */ - var n; /* code index */ - - /* The distribution counts are first used to generate the code values - * without bit reversal. - */ - for (bits = 1; bits <= MAX_BITS; bits++) { - next_code[bits] = code = (code + bl_count[bits - 1]) << 1; - } - /* Check that the bit counts in bl_count are consistent. The last code - * must be all ones. - */ - //Assert (code + bl_count[MAX_BITS]-1 == (1<<MAX_BITS)-1, - // "inconsistent bit counts"); - //Tracev((stderr,"\ngen_codes: max_code %d ", max_code)); - - for (n = 0; n <= max_code; n++) { - var len = tree[n * 2 + 1]/*.Len*/; - if (len === 0) { continue; } - /* Now reverse the bits */ - tree[n * 2]/*.Code*/ = bi_reverse(next_code[len]++, len); - - //Tracecv(tree != static_ltree, (stderr,"\nn %3d %c l %2d c %4x (%x) ", - // n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len]-1)); - } -} - - -/* =========================================================================== - * Initialize the various 'constant' tables. - */ -function tr_static_init() { - var n; /* iterates over tree elements */ - var bits; /* bit counter */ - var length; /* length value */ - var code; /* code value */ - var dist; /* distance index */ - var bl_count = new Array(MAX_BITS + 1); - /* number of codes at each bit length for an optimal tree */ - - // do check in _tr_init() - //if (static_init_done) return; - - /* For some embedded targets, global variables are not initialized: */ -/*#ifdef NO_INIT_GLOBAL_POINTERS - static_l_desc.static_tree = static_ltree; - static_l_desc.extra_bits = extra_lbits; - static_d_desc.static_tree = static_dtree; - static_d_desc.extra_bits = extra_dbits; - static_bl_desc.extra_bits = extra_blbits; -#endif*/ - - /* Initialize the mapping length (0..255) -> length code (0..28) */ - length = 0; - for (code = 0; code < LENGTH_CODES - 1; code++) { - base_length[code] = length; - for (n = 0; n < (1 << extra_lbits[code]); n++) { - _length_code[length++] = code; - } - } - //Assert (length == 256, "tr_static_init: length != 256"); - /* Note that the length 255 (match length 258) can be represented - * in two different ways: code 284 + 5 bits or code 285, so we - * overwrite length_code[255] to use the best encoding: - */ - _length_code[length - 1] = code; - - /* Initialize the mapping dist (0..32K) -> dist code (0..29) */ - dist = 0; - for (code = 0; code < 16; code++) { - base_dist[code] = dist; - for (n = 0; n < (1 << extra_dbits[code]); n++) { - _dist_code[dist++] = code; - } - } - //Assert (dist == 256, "tr_static_init: dist != 256"); - dist >>= 7; /* from now on, all distances are divided by 128 */ - for (; code < D_CODES; code++) { - base_dist[code] = dist << 7; - for (n = 0; n < (1 << (extra_dbits[code] - 7)); n++) { - _dist_code[256 + dist++] = code; - } - } - //Assert (dist == 256, "tr_static_init: 256+dist != 512"); - - /* Construct the codes of the static literal tree */ - for (bits = 0; bits <= MAX_BITS; bits++) { - bl_count[bits] = 0; - } - - n = 0; - while (n <= 143) { - static_ltree[n * 2 + 1]/*.Len*/ = 8; - n++; - bl_count[8]++; - } - while (n <= 255) { - static_ltree[n * 2 + 1]/*.Len*/ = 9; - n++; - bl_count[9]++; - } - while (n <= 279) { - static_ltree[n * 2 + 1]/*.Len*/ = 7; - n++; - bl_count[7]++; - } - while (n <= 287) { - static_ltree[n * 2 + 1]/*.Len*/ = 8; - n++; - bl_count[8]++; - } - /* Codes 286 and 287 do not exist, but we must include them in the - * tree construction to get a canonical Huffman tree (longest code - * all ones) - */ - gen_codes(static_ltree, L_CODES + 1, bl_count); - - /* The static distance tree is trivial: */ - for (n = 0; n < D_CODES; n++) { - static_dtree[n * 2 + 1]/*.Len*/ = 5; - static_dtree[n * 2]/*.Code*/ = bi_reverse(n, 5); - } - - // Now data ready and we can init static trees - static_l_desc = new StaticTreeDesc(static_ltree, extra_lbits, LITERALS + 1, L_CODES, MAX_BITS); - static_d_desc = new StaticTreeDesc(static_dtree, extra_dbits, 0, D_CODES, MAX_BITS); - static_bl_desc = new StaticTreeDesc(new Array(0), extra_blbits, 0, BL_CODES, MAX_BL_BITS); - - //static_init_done = true; -} - - -/* =========================================================================== - * Initialize a new block. - */ -function init_block(s) { - var n; /* iterates over tree elements */ - - /* Initialize the trees. */ - for (n = 0; n < L_CODES; n++) { s.dyn_ltree[n * 2]/*.Freq*/ = 0; } - for (n = 0; n < D_CODES; n++) { s.dyn_dtree[n * 2]/*.Freq*/ = 0; } - for (n = 0; n < BL_CODES; n++) { s.bl_tree[n * 2]/*.Freq*/ = 0; } - - s.dyn_ltree[END_BLOCK * 2]/*.Freq*/ = 1; - s.opt_len = s.static_len = 0; - s.last_lit = s.matches = 0; -} - - -/* =========================================================================== - * Flush the bit buffer and align the output on a byte boundary - */ -function bi_windup(s) -{ - if (s.bi_valid > 8) { - put_short(s, s.bi_buf); - } else if (s.bi_valid > 0) { - //put_byte(s, (Byte)s->bi_buf); - s.pending_buf[s.pending++] = s.bi_buf; - } - s.bi_buf = 0; - s.bi_valid = 0; -} - -/* =========================================================================== - * Copy a stored block, storing first the length and its - * one's complement if requested. - */ -function copy_block(s, buf, len, header) -//DeflateState *s; -//charf *buf; /* the input data */ -//unsigned len; /* its length */ -//int header; /* true if block header must be written */ -{ - bi_windup(s); /* align on byte boundary */ - - if (header) { - put_short(s, len); - put_short(s, ~len); - } -// while (len--) { -// put_byte(s, *buf++); -// } - utils.arraySet(s.pending_buf, s.window, buf, len, s.pending); - s.pending += len; -} - -/* =========================================================================== - * Compares to subtrees, using the tree depth as tie breaker when - * the subtrees have equal frequency. This minimizes the worst case length. - */ -function smaller(tree, n, m, depth) { - var _n2 = n * 2; - var _m2 = m * 2; - return (tree[_n2]/*.Freq*/ < tree[_m2]/*.Freq*/ || - (tree[_n2]/*.Freq*/ === tree[_m2]/*.Freq*/ && depth[n] <= depth[m])); -} - -/* =========================================================================== - * Restore the heap property by moving down the tree starting at node k, - * exchanging a node with the smallest of its two sons if necessary, stopping - * when the heap property is re-established (each father smaller than its - * two sons). - */ -function pqdownheap(s, tree, k) -// deflate_state *s; -// ct_data *tree; /* the tree to restore */ -// int k; /* node to move down */ -{ - var v = s.heap[k]; - var j = k << 1; /* left son of k */ - while (j <= s.heap_len) { - /* Set j to the smallest of the two sons: */ - if (j < s.heap_len && - smaller(tree, s.heap[j + 1], s.heap[j], s.depth)) { - j++; - } - /* Exit if v is smaller than both sons */ - if (smaller(tree, v, s.heap[j], s.depth)) { break; } - - /* Exchange v with the smallest son */ - s.heap[k] = s.heap[j]; - k = j; - - /* And continue down the tree, setting j to the left son of k */ - j <<= 1; - } - s.heap[k] = v; -} - - -// inlined manually -// var SMALLEST = 1; - -/* =========================================================================== - * Send the block data compressed using the given Huffman trees - */ -function compress_block(s, ltree, dtree) -// deflate_state *s; -// const ct_data *ltree; /* literal tree */ -// const ct_data *dtree; /* distance tree */ -{ - var dist; /* distance of matched string */ - var lc; /* match length or unmatched char (if dist == 0) */ - var lx = 0; /* running index in l_buf */ - var code; /* the code to send */ - var extra; /* number of extra bits to send */ - - if (s.last_lit !== 0) { - do { - dist = (s.pending_buf[s.d_buf + lx * 2] << 8) | (s.pending_buf[s.d_buf + lx * 2 + 1]); - lc = s.pending_buf[s.l_buf + lx]; - lx++; - - if (dist === 0) { - send_code(s, lc, ltree); /* send a literal byte */ - //Tracecv(isgraph(lc), (stderr," '%c' ", lc)); - } else { - /* Here, lc is the match length - MIN_MATCH */ - code = _length_code[lc]; - send_code(s, code + LITERALS + 1, ltree); /* send the length code */ - extra = extra_lbits[code]; - if (extra !== 0) { - lc -= base_length[code]; - send_bits(s, lc, extra); /* send the extra length bits */ - } - dist--; /* dist is now the match distance - 1 */ - code = d_code(dist); - //Assert (code < D_CODES, "bad d_code"); - - send_code(s, code, dtree); /* send the distance code */ - extra = extra_dbits[code]; - if (extra !== 0) { - dist -= base_dist[code]; - send_bits(s, dist, extra); /* send the extra distance bits */ - } - } /* literal or match pair ? */ - - /* Check that the overlay between pending_buf and d_buf+l_buf is ok: */ - //Assert((uInt)(s->pending) < s->lit_bufsize + 2*lx, - // "pendingBuf overflow"); - - } while (lx < s.last_lit); - } - - send_code(s, END_BLOCK, ltree); -} - - -/* =========================================================================== - * Construct one Huffman tree and assigns the code bit strings and lengths. - * Update the total bit length for the current block. - * IN assertion: the field freq is set for all tree elements. - * OUT assertions: the fields len and code are set to the optimal bit length - * and corresponding code. The length opt_len is updated; static_len is - * also updated if stree is not null. The field max_code is set. - */ -function build_tree(s, desc) -// deflate_state *s; -// tree_desc *desc; /* the tree descriptor */ -{ - var tree = desc.dyn_tree; - var stree = desc.stat_desc.static_tree; - var has_stree = desc.stat_desc.has_stree; - var elems = desc.stat_desc.elems; - var n, m; /* iterate over heap elements */ - var max_code = -1; /* largest code with non zero frequency */ - var node; /* new node being created */ - - /* Construct the initial heap, with least frequent element in - * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1]. - * heap[0] is not used. - */ - s.heap_len = 0; - s.heap_max = HEAP_SIZE; - - for (n = 0; n < elems; n++) { - if (tree[n * 2]/*.Freq*/ !== 0) { - s.heap[++s.heap_len] = max_code = n; - s.depth[n] = 0; - - } else { - tree[n * 2 + 1]/*.Len*/ = 0; - } - } - - /* The pkzip format requires that at least one distance code exists, - * and that at least one bit should be sent even if there is only one - * possible code. So to avoid special checks later on we force at least - * two codes of non zero frequency. - */ - while (s.heap_len < 2) { - node = s.heap[++s.heap_len] = (max_code < 2 ? ++max_code : 0); - tree[node * 2]/*.Freq*/ = 1; - s.depth[node] = 0; - s.opt_len--; - - if (has_stree) { - s.static_len -= stree[node * 2 + 1]/*.Len*/; - } - /* node is 0 or 1 so it does not have extra bits */ - } - desc.max_code = max_code; - - /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree, - * establish sub-heaps of increasing lengths: - */ - for (n = (s.heap_len >> 1/*int /2*/); n >= 1; n--) { pqdownheap(s, tree, n); } - - /* Construct the Huffman tree by repeatedly combining the least two - * frequent nodes. - */ - node = elems; /* next internal node of the tree */ - do { - //pqremove(s, tree, n); /* n = node of least frequency */ - /*** pqremove ***/ - n = s.heap[1/*SMALLEST*/]; - s.heap[1/*SMALLEST*/] = s.heap[s.heap_len--]; - pqdownheap(s, tree, 1/*SMALLEST*/); - /***/ - - m = s.heap[1/*SMALLEST*/]; /* m = node of next least frequency */ - - s.heap[--s.heap_max] = n; /* keep the nodes sorted by frequency */ - s.heap[--s.heap_max] = m; - - /* Create a new node father of n and m */ - tree[node * 2]/*.Freq*/ = tree[n * 2]/*.Freq*/ + tree[m * 2]/*.Freq*/; - s.depth[node] = (s.depth[n] >= s.depth[m] ? s.depth[n] : s.depth[m]) + 1; - tree[n * 2 + 1]/*.Dad*/ = tree[m * 2 + 1]/*.Dad*/ = node; - - /* and insert the new node in the heap */ - s.heap[1/*SMALLEST*/] = node++; - pqdownheap(s, tree, 1/*SMALLEST*/); - - } while (s.heap_len >= 2); - - s.heap[--s.heap_max] = s.heap[1/*SMALLEST*/]; - - /* At this point, the fields freq and dad are set. We can now - * generate the bit lengths. - */ - gen_bitlen(s, desc); - - /* The field len is now set, we can generate the bit codes */ - gen_codes(tree, max_code, s.bl_count); -} - - -/* =========================================================================== - * Scan a literal or distance tree to determine the frequencies of the codes - * in the bit length tree. - */ -function scan_tree(s, tree, max_code) -// deflate_state *s; -// ct_data *tree; /* the tree to be scanned */ -// int max_code; /* and its largest code of non zero frequency */ -{ - var n; /* iterates over all tree elements */ - var prevlen = -1; /* last emitted length */ - var curlen; /* length of current code */ - - var nextlen = tree[0 * 2 + 1]/*.Len*/; /* length of next code */ - - var count = 0; /* repeat count of the current code */ - var max_count = 7; /* max repeat count */ - var min_count = 4; /* min repeat count */ - - if (nextlen === 0) { - max_count = 138; - min_count = 3; - } - tree[(max_code + 1) * 2 + 1]/*.Len*/ = 0xffff; /* guard */ - - for (n = 0; n <= max_code; n++) { - curlen = nextlen; - nextlen = tree[(n + 1) * 2 + 1]/*.Len*/; - - if (++count < max_count && curlen === nextlen) { - continue; - - } else if (count < min_count) { - s.bl_tree[curlen * 2]/*.Freq*/ += count; - - } else if (curlen !== 0) { - - if (curlen !== prevlen) { s.bl_tree[curlen * 2]/*.Freq*/++; } - s.bl_tree[REP_3_6 * 2]/*.Freq*/++; - - } else if (count <= 10) { - s.bl_tree[REPZ_3_10 * 2]/*.Freq*/++; - - } else { - s.bl_tree[REPZ_11_138 * 2]/*.Freq*/++; - } - - count = 0; - prevlen = curlen; - - if (nextlen === 0) { - max_count = 138; - min_count = 3; - - } else if (curlen === nextlen) { - max_count = 6; - min_count = 3; - - } else { - max_count = 7; - min_count = 4; - } - } -} - - -/* =========================================================================== - * Send a literal or distance tree in compressed form, using the codes in - * bl_tree. - */ -function send_tree(s, tree, max_code) -// deflate_state *s; -// ct_data *tree; /* the tree to be scanned */ -// int max_code; /* and its largest code of non zero frequency */ -{ - var n; /* iterates over all tree elements */ - var prevlen = -1; /* last emitted length */ - var curlen; /* length of current code */ - - var nextlen = tree[0 * 2 + 1]/*.Len*/; /* length of next code */ - - var count = 0; /* repeat count of the current code */ - var max_count = 7; /* max repeat count */ - var min_count = 4; /* min repeat count */ - - /* tree[max_code+1].Len = -1; */ /* guard already set */ - if (nextlen === 0) { - max_count = 138; - min_count = 3; - } - - for (n = 0; n <= max_code; n++) { - curlen = nextlen; - nextlen = tree[(n + 1) * 2 + 1]/*.Len*/; - - if (++count < max_count && curlen === nextlen) { - continue; - - } else if (count < min_count) { - do { send_code(s, curlen, s.bl_tree); } while (--count !== 0); - - } else if (curlen !== 0) { - if (curlen !== prevlen) { - send_code(s, curlen, s.bl_tree); - count--; - } - //Assert(count >= 3 && count <= 6, " 3_6?"); - send_code(s, REP_3_6, s.bl_tree); - send_bits(s, count - 3, 2); - - } else if (count <= 10) { - send_code(s, REPZ_3_10, s.bl_tree); - send_bits(s, count - 3, 3); - - } else { - send_code(s, REPZ_11_138, s.bl_tree); - send_bits(s, count - 11, 7); - } - - count = 0; - prevlen = curlen; - if (nextlen === 0) { - max_count = 138; - min_count = 3; - - } else if (curlen === nextlen) { - max_count = 6; - min_count = 3; - - } else { - max_count = 7; - min_count = 4; - } - } -} - - -/* =========================================================================== - * Construct the Huffman tree for the bit lengths and return the index in - * bl_order of the last bit length code to send. - */ -function build_bl_tree(s) { - var max_blindex; /* index of last bit length code of non zero freq */ - - /* Determine the bit length frequencies for literal and distance trees */ - scan_tree(s, s.dyn_ltree, s.l_desc.max_code); - scan_tree(s, s.dyn_dtree, s.d_desc.max_code); - - /* Build the bit length tree: */ - build_tree(s, s.bl_desc); - /* opt_len now includes the length of the tree representations, except - * the lengths of the bit lengths codes and the 5+5+4 bits for the counts. - */ - - /* Determine the number of bit length codes to send. The pkzip format - * requires that at least 4 bit length codes be sent. (appnote.txt says - * 3 but the actual value used is 4.) - */ - for (max_blindex = BL_CODES - 1; max_blindex >= 3; max_blindex--) { - if (s.bl_tree[bl_order[max_blindex] * 2 + 1]/*.Len*/ !== 0) { - break; - } - } - /* Update opt_len to include the bit length tree and counts */ - s.opt_len += 3 * (max_blindex + 1) + 5 + 5 + 4; - //Tracev((stderr, "\ndyn trees: dyn %ld, stat %ld", - // s->opt_len, s->static_len)); - - return max_blindex; -} - - -/* =========================================================================== - * Send the header for a block using dynamic Huffman trees: the counts, the - * lengths of the bit length codes, the literal tree and the distance tree. - * IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4. - */ -function send_all_trees(s, lcodes, dcodes, blcodes) -// deflate_state *s; -// int lcodes, dcodes, blcodes; /* number of codes for each tree */ -{ - var rank; /* index in bl_order */ - - //Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, "not enough codes"); - //Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES, - // "too many codes"); - //Tracev((stderr, "\nbl counts: ")); - send_bits(s, lcodes - 257, 5); /* not +255 as stated in appnote.txt */ - send_bits(s, dcodes - 1, 5); - send_bits(s, blcodes - 4, 4); /* not -3 as stated in appnote.txt */ - for (rank = 0; rank < blcodes; rank++) { - //Tracev((stderr, "\nbl code %2d ", bl_order[rank])); - send_bits(s, s.bl_tree[bl_order[rank] * 2 + 1]/*.Len*/, 3); - } - //Tracev((stderr, "\nbl tree: sent %ld", s->bits_sent)); - - send_tree(s, s.dyn_ltree, lcodes - 1); /* literal tree */ - //Tracev((stderr, "\nlit tree: sent %ld", s->bits_sent)); - - send_tree(s, s.dyn_dtree, dcodes - 1); /* distance tree */ - //Tracev((stderr, "\ndist tree: sent %ld", s->bits_sent)); -} - - -/* =========================================================================== - * Check if the data type is TEXT or BINARY, using the following algorithm: - * - TEXT if the two conditions below are satisfied: - * a) There are no non-portable control characters belonging to the - * "black list" (0..6, 14..25, 28..31). - * b) There is at least one printable character belonging to the - * "white list" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255). - * - BINARY otherwise. - * - The following partially-portable control characters form a - * "gray list" that is ignored in this detection algorithm: - * (7 {BEL}, 8 {BS}, 11 {VT}, 12 {FF}, 26 {SUB}, 27 {ESC}). - * IN assertion: the fields Freq of dyn_ltree are set. - */ -function detect_data_type(s) { - /* black_mask is the bit mask of black-listed bytes - * set bits 0..6, 14..25, and 28..31 - * 0xf3ffc07f = binary 11110011111111111100000001111111 - */ - var black_mask = 0xf3ffc07f; - var n; - - /* Check for non-textual ("black-listed") bytes. */ - for (n = 0; n <= 31; n++, black_mask >>>= 1) { - if ((black_mask & 1) && (s.dyn_ltree[n * 2]/*.Freq*/ !== 0)) { - return Z_BINARY; - } - } - - /* Check for textual ("white-listed") bytes. */ - if (s.dyn_ltree[9 * 2]/*.Freq*/ !== 0 || s.dyn_ltree[10 * 2]/*.Freq*/ !== 0 || - s.dyn_ltree[13 * 2]/*.Freq*/ !== 0) { - return Z_TEXT; - } - for (n = 32; n < LITERALS; n++) { - if (s.dyn_ltree[n * 2]/*.Freq*/ !== 0) { - return Z_TEXT; - } - } - - /* There are no "black-listed" or "white-listed" bytes: - * this stream either is empty or has tolerated ("gray-listed") bytes only. - */ - return Z_BINARY; -} - - -var static_init_done = false; - -/* =========================================================================== - * Initialize the tree data structures for a new zlib stream. - */ -function _tr_init(s) -{ - - if (!static_init_done) { - tr_static_init(); - static_init_done = true; - } - - s.l_desc = new TreeDesc(s.dyn_ltree, static_l_desc); - s.d_desc = new TreeDesc(s.dyn_dtree, static_d_desc); - s.bl_desc = new TreeDesc(s.bl_tree, static_bl_desc); - - s.bi_buf = 0; - s.bi_valid = 0; - - /* Initialize the first block of the first file: */ - init_block(s); -} - - -/* =========================================================================== - * Send a stored block - */ -function _tr_stored_block(s, buf, stored_len, last) -//DeflateState *s; -//charf *buf; /* input block */ -//ulg stored_len; /* length of input block */ -//int last; /* one if this is the last block for a file */ -{ - send_bits(s, (STORED_BLOCK << 1) + (last ? 1 : 0), 3); /* send block type */ - copy_block(s, buf, stored_len, true); /* with header */ -} - - -/* =========================================================================== - * Send one empty static block to give enough lookahead for inflate. - * This takes 10 bits, of which 7 may remain in the bit buffer. - */ -function _tr_align(s) { - send_bits(s, STATIC_TREES << 1, 3); - send_code(s, END_BLOCK, static_ltree); - bi_flush(s); -} - - -/* =========================================================================== - * Determine the best encoding for the current block: dynamic trees, static - * trees or store, and output the encoded block to the zip file. - */ -function _tr_flush_block(s, buf, stored_len, last) -//DeflateState *s; -//charf *buf; /* input block, or NULL if too old */ -//ulg stored_len; /* length of input block */ -//int last; /* one if this is the last block for a file */ -{ - var opt_lenb, static_lenb; /* opt_len and static_len in bytes */ - var max_blindex = 0; /* index of last bit length code of non zero freq */ - - /* Build the Huffman trees unless a stored block is forced */ - if (s.level > 0) { - - /* Check if the file is binary or text */ - if (s.strm.data_type === Z_UNKNOWN) { - s.strm.data_type = detect_data_type(s); - } - - /* Construct the literal and distance trees */ - build_tree(s, s.l_desc); - // Tracev((stderr, "\nlit data: dyn %ld, stat %ld", s->opt_len, - // s->static_len)); - - build_tree(s, s.d_desc); - // Tracev((stderr, "\ndist data: dyn %ld, stat %ld", s->opt_len, - // s->static_len)); - /* At this point, opt_len and static_len are the total bit lengths of - * the compressed block data, excluding the tree representations. - */ - - /* Build the bit length tree for the above two trees, and get the index - * in bl_order of the last bit length code to send. - */ - max_blindex = build_bl_tree(s); - - /* Determine the best encoding. Compute the block lengths in bytes. */ - opt_lenb = (s.opt_len + 3 + 7) >>> 3; - static_lenb = (s.static_len + 3 + 7) >>> 3; - - // Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ", - // opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len, - // s->last_lit)); - - if (static_lenb <= opt_lenb) { opt_lenb = static_lenb; } - - } else { - // Assert(buf != (char*)0, "lost buf"); - opt_lenb = static_lenb = stored_len + 5; /* force a stored block */ - } - - if ((stored_len + 4 <= opt_lenb) && (buf !== -1)) { - /* 4: two words for the lengths */ - - /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE. - * Otherwise we can't have processed more than WSIZE input bytes since - * the last block flush, because compression would have been - * successful. If LIT_BUFSIZE <= WSIZE, it is never too late to - * transform a block into a stored block. - */ - _tr_stored_block(s, buf, stored_len, last); - - } else if (s.strategy === Z_FIXED || static_lenb === opt_lenb) { - - send_bits(s, (STATIC_TREES << 1) + (last ? 1 : 0), 3); - compress_block(s, static_ltree, static_dtree); - - } else { - send_bits(s, (DYN_TREES << 1) + (last ? 1 : 0), 3); - send_all_trees(s, s.l_desc.max_code + 1, s.d_desc.max_code + 1, max_blindex + 1); - compress_block(s, s.dyn_ltree, s.dyn_dtree); - } - // Assert (s->compressed_len == s->bits_sent, "bad compressed size"); - /* The above check is made mod 2^32, for files larger than 512 MB - * and uLong implemented on 32 bits. - */ - init_block(s); - - if (last) { - bi_windup(s); - } - // Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len>>3, - // s->compressed_len-7*last)); -} - -/* =========================================================================== - * Save the match info and tally the frequency counts. Return true if - * the current block must be flushed. - */ -function _tr_tally(s, dist, lc) -// deflate_state *s; -// unsigned dist; /* distance of matched string */ -// unsigned lc; /* match length-MIN_MATCH or unmatched char (if dist==0) */ -{ - //var out_length, in_length, dcode; - - s.pending_buf[s.d_buf + s.last_lit * 2] = (dist >>> 8) & 0xff; - s.pending_buf[s.d_buf + s.last_lit * 2 + 1] = dist & 0xff; - - s.pending_buf[s.l_buf + s.last_lit] = lc & 0xff; - s.last_lit++; - - if (dist === 0) { - /* lc is the unmatched char */ - s.dyn_ltree[lc * 2]/*.Freq*/++; - } else { - s.matches++; - /* Here, lc is the match length - MIN_MATCH */ - dist--; /* dist = match distance - 1 */ - //Assert((ush)dist < (ush)MAX_DIST(s) && - // (ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) && - // (ush)d_code(dist) < (ush)D_CODES, "_tr_tally: bad match"); - - s.dyn_ltree[(_length_code[lc] + LITERALS + 1) * 2]/*.Freq*/++; - s.dyn_dtree[d_code(dist) * 2]/*.Freq*/++; - } - -// (!) This block is disabled in zlib defaults, -// don't enable it for binary compatibility - -//#ifdef TRUNCATE_BLOCK -// /* Try to guess if it is profitable to stop the current block here */ -// if ((s.last_lit & 0x1fff) === 0 && s.level > 2) { -// /* Compute an upper bound for the compressed length */ -// out_length = s.last_lit*8; -// in_length = s.strstart - s.block_start; -// -// for (dcode = 0; dcode < D_CODES; dcode++) { -// out_length += s.dyn_dtree[dcode*2]/*.Freq*/ * (5 + extra_dbits[dcode]); -// } -// out_length >>>= 3; -// //Tracev((stderr,"\nlast_lit %u, in %ld, out ~%ld(%ld%%) ", -// // s->last_lit, in_length, out_length, -// // 100L - out_length*100L/in_length)); -// if (s.matches < (s.last_lit>>1)/*int /2*/ && out_length < (in_length>>1)/*int /2*/) { -// return true; -// } -// } -//#endif - - return (s.last_lit === s.lit_bufsize - 1); - /* We avoid equality with lit_bufsize because of wraparound at 64K - * on 16 bit machines and because stored blocks are restricted to - * 64K-1 bytes. - */ -} - -exports._tr_init = _tr_init; -exports._tr_stored_block = _tr_stored_block; -exports._tr_flush_block = _tr_flush_block; -exports._tr_tally = _tr_tally; -exports._tr_align = _tr_align; - -},{"../utils/common":3}],15:[function(require,module,exports){ -'use strict'; - -// (C) 1995-2013 Jean-loup Gailly and Mark Adler -// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would be -// appreciated but is not required. -// 2. Altered source versions must be plainly marked as such, and must not be -// misrepresented as being the original software. -// 3. This notice may not be removed or altered from any source distribution. - -function ZStream() { - /* next input byte */ - this.input = null; // JS specific, because we have no pointers - this.next_in = 0; - /* number of bytes available at input */ - this.avail_in = 0; - /* total number of input bytes read so far */ - this.total_in = 0; - /* next output byte should be put there */ - this.output = null; // JS specific, because we have no pointers - this.next_out = 0; - /* remaining free space at output */ - this.avail_out = 0; - /* total number of bytes output so far */ - this.total_out = 0; - /* last error message, NULL if no error */ - this.msg = ''/*Z_NULL*/; - /* not visible by applications */ - this.state = null; - /* best guess about the data type: binary or text */ - this.data_type = 2/*Z_UNKNOWN*/; - /* adler32 value of the uncompressed data */ - this.adler = 0; -} - -module.exports = ZStream; - -},{}],"/":[function(require,module,exports){ -// Top level file is just a mixin of submodules & constants -'use strict'; - -var assign = require('./lib/utils/common').assign; - -var deflate = require('./lib/deflate'); -var inflate = require('./lib/inflate'); -var constants = require('./lib/zlib/constants'); - -var pako = {}; - -assign(pako, deflate, inflate, constants); - -module.exports = pako; - -},{"./lib/deflate":1,"./lib/inflate":2,"./lib/utils/common":3,"./lib/zlib/constants":6}]},{},[])("/") -}); diff --git a/school/node_modules/pako/dist/pako.min.js b/school/node_modules/pako/dist/pako.min.js deleted file mode 100644 index ba39731..0000000 --- a/school/node_modules/pako/dist/pako.min.js +++ /dev/null @@ -1 +0,0 @@ -!function(t){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=t();else if("function"==typeof define&&define.amd)define([],t);else{("undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this).pako=t()}}(function(){return function r(s,o,l){function h(e,t){if(!o[e]){if(!s[e]){var a="function"==typeof require&&require;if(!t&&a)return a(e,!0);if(d)return d(e,!0);var i=new Error("Cannot find module '"+e+"'");throw i.code="MODULE_NOT_FOUND",i}var n=o[e]={exports:{}};s[e][0].call(n.exports,function(t){return h(s[e][1][t]||t)},n,n.exports,r,s,o,l)}return o[e].exports}for(var d="function"==typeof require&&require,t=0;t<l.length;t++)h(l[t]);return h}({1:[function(t,e,a){"use strict";var s=t("./zlib/deflate"),o=t("./utils/common"),l=t("./utils/strings"),n=t("./zlib/messages"),r=t("./zlib/zstream"),h=Object.prototype.toString,d=0,f=-1,_=0,u=8;function c(t){if(!(this instanceof c))return new c(t);this.options=o.assign({level:f,method:u,chunkSize:16384,windowBits:15,memLevel:8,strategy:_,to:""},t||{});var e=this.options;e.raw&&0<e.windowBits?e.windowBits=-e.windowBits:e.gzip&&0<e.windowBits&&e.windowBits<16&&(e.windowBits+=16),this.err=0,this.msg="",this.ended=!1,this.chunks=[],this.strm=new r,this.strm.avail_out=0;var a=s.deflateInit2(this.strm,e.level,e.method,e.windowBits,e.memLevel,e.strategy);if(a!==d)throw new Error(n[a]);if(e.header&&s.deflateSetHeader(this.strm,e.header),e.dictionary){var i;if(i="string"==typeof e.dictionary?l.string2buf(e.dictionary):"[object ArrayBuffer]"===h.call(e.dictionary)?new Uint8Array(e.dictionary):e.dictionary,(a=s.deflateSetDictionary(this.strm,i))!==d)throw new Error(n[a]);this._dict_set=!0}}function i(t,e){var a=new c(e);if(a.push(t,!0),a.err)throw a.msg||n[a.err];return a.result}c.prototype.push=function(t,e){var a,i,n=this.strm,r=this.options.chunkSize;if(this.ended)return!1;i=e===~~e?e:!0===e?4:0,"string"==typeof t?n.input=l.string2buf(t):"[object ArrayBuffer]"===h.call(t)?n.input=new Uint8Array(t):n.input=t,n.next_in=0,n.avail_in=n.input.length;do{if(0===n.avail_out&&(n.output=new o.Buf8(r),n.next_out=0,n.avail_out=r),1!==(a=s.deflate(n,i))&&a!==d)return this.onEnd(a),!(this.ended=!0);0!==n.avail_out&&(0!==n.avail_in||4!==i&&2!==i)||("string"===this.options.to?this.onData(l.buf2binstring(o.shrinkBuf(n.output,n.next_out))):this.onData(o.shrinkBuf(n.output,n.next_out)))}while((0<n.avail_in||0===n.avail_out)&&1!==a);return 4===i?(a=s.deflateEnd(this.strm),this.onEnd(a),this.ended=!0,a===d):2!==i||(this.onEnd(d),!(n.avail_out=0))},c.prototype.onData=function(t){this.chunks.push(t)},c.prototype.onEnd=function(t){t===d&&("string"===this.options.to?this.result=this.chunks.join(""):this.result=o.flattenChunks(this.chunks)),this.chunks=[],this.err=t,this.msg=this.strm.msg},a.Deflate=c,a.deflate=i,a.deflateRaw=function(t,e){return(e=e||{}).raw=!0,i(t,e)},a.gzip=function(t,e){return(e=e||{}).gzip=!0,i(t,e)}},{"./utils/common":3,"./utils/strings":4,"./zlib/deflate":8,"./zlib/messages":13,"./zlib/zstream":15}],2:[function(t,e,a){"use strict";var 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P;return(t.state=o).strm=t,o.wrap=s,o.gzhead=null,o.w_bits=i,o.w_size=1<<o.w_bits,o.w_mask=o.w_size-1,o.hash_bits=n+7,o.hash_size=1<<o.hash_bits,o.hash_mask=o.hash_size-1,o.hash_shift=~~((o.hash_bits+x-1)/x),o.window=new _.Buf8(2*o.w_size),o.head=new _.Buf16(o.hash_size),o.prev=new _.Buf16(o.w_size),o.lit_bufsize=1<<n+6,o.pending_buf_size=4*o.lit_bufsize,o.pending_buf=new _.Buf8(o.pending_buf_size),o.d_buf=1*o.lit_bufsize,o.l_buf=3*o.lit_bufsize,o.level=e,o.strategy=r,o.method=a,q(t)}l=[new M(0,0,0,0,function(t,e){var a=65535;for(a>t.pending_buf_size-5&&(a=t.pending_buf_size-5);;){if(t.lookahead<=1){if(H(t),0===t.lookahead&&e===d)return A;if(0===t.lookahead)break}t.strstart+=t.lookahead,t.lookahead=0;var i=t.block_start+a;if((0===t.strstart||t.strstart>=i)&&(t.lookahead=t.strstart-i,t.strstart=i,U(t,!1),0===t.strm.avail_out))return A;if(t.strstart-t.block_start>=t.w_size-B&&(U(t,!1),0===t.strm.avail_out))return A}return t.insert=0,e===f?(U(t,!0),0===t.strm.avail_out?R:C):(t.strstart>t.block_start&&(U(t,!1),t.strm.avail_out),A)}),new M(4,4,8,4,j),new M(4,5,16,8,j),new M(4,6,32,32,j),new M(4,4,16,16,K),new M(8,16,32,32,K),new M(8,16,128,128,K),new M(8,32,128,256,K),new M(32,128,258,1024,K),new M(32,258,258,4096,K)],a.deflateInit=function(t,e){return G(t,e,p,15,8,0)},a.deflateInit2=G,a.deflateReset=q,a.deflateResetKeep=Y,a.deflateSetHeader=function(t,e){return t&&t.state?2!==t.state.wrap?g:(t.state.gzhead=e,b):g},a.deflate=function(t,e){var a,i,n,r;if(!t||!t.state||5<e||e<0)return t?N(t,g):g;if(i=t.state,!t.output||!t.input&&0!==t.avail_in||666===i.status&&e!==f)return N(t,0===t.avail_out?-5:g);if(i.strm=t,a=i.last_flush,i.last_flush=e,i.status===S)if(2===i.wrap)t.adler=0,T(i,31),T(i,139),T(i,8),i.gzhead?(T(i,(i.gzhead.text?1:0)+(i.gzhead.hcrc?2:0)+(i.gzhead.extra?4:0)+(i.gzhead.name?8:0)+(i.gzhead.comment?16:0)),T(i,255&i.gzhead.time),T(i,i.gzhead.time>>8&255),T(i,i.gzhead.time>>16&255),T(i,i.gzhead.time>>24&255),T(i,9===i.level?2:2<=i.strategy||i.level<2?4:0),T(i,255&i.gzhead.os),i.gzhead.extra&&i.gzhead.extra.length&&(T(i,255&i.gzhead.extra.length),T(i,i.gzhead.extra.length>>8&255)),i.gzhead.hcrc&&(t.adler=c(t.adler,i.pending_buf,i.pending,0)),i.gzindex=0,i.status=69):(T(i,0),T(i,0),T(i,0),T(i,0),T(i,0),T(i,9===i.level?2:2<=i.strategy||i.level<2?4:0),T(i,3),i.status=E);else{var s=p+(i.w_bits-8<<4)<<8;s|=(2<=i.strategy||i.level<2?0:i.level<6?1:6===i.level?2:3)<<6,0!==i.strstart&&(s|=32),s+=31-s%31,i.status=E,F(i,s),0!==i.strstart&&(F(i,t.adler>>>16),F(i,65535&t.adler)),t.adler=1}if(69===i.status)if(i.gzhead.extra){for(n=i.pending;i.gzindex<(65535&i.gzhead.extra.length)&&(i.pending!==i.pending_buf_size||(i.gzhead.hcrc&&i.pending>n&&(t.adler=c(t.adler,i.pending_buf,i.pending-n,n)),I(t),n=i.pending,i.pending!==i.pending_buf_size));)T(i,255&i.gzhead.extra[i.gzindex]),i.gzindex++;i.gzhead.hcrc&&i.pending>n&&(t.adler=c(t.adler,i.pending_buf,i.pending-n,n)),i.gzindex===i.gzhead.extra.length&&(i.gzindex=0,i.status=73)}else i.status=73;if(73===i.status)if(i.gzhead.name){n=i.pending;do{if(i.pending===i.pending_buf_size&&(i.gzhead.hcrc&&i.pending>n&&(t.adler=c(t.adler,i.pending_buf,i.pending-n,n)),I(t),n=i.pending,i.pending===i.pending_buf_size)){r=1;break}T(i,r=i.gzindex<i.gzhead.name.length?255&i.gzhead.name.charCodeAt(i.gzindex++):0)}while(0!==r);i.gzhead.hcrc&&i.pending>n&&(t.adler=c(t.adler,i.pending_buf,i.pending-n,n)),0===r&&(i.gzindex=0,i.status=91)}else i.status=91;if(91===i.status)if(i.gzhead.comment){n=i.pending;do{if(i.pending===i.pending_buf_size&&(i.gzhead.hcrc&&i.pending>n&&(t.adler=c(t.adler,i.pending_buf,i.pending-n,n)),I(t),n=i.pending,i.pending===i.pending_buf_size)){r=1;break}T(i,r=i.gzindex<i.gzhead.comment.length?255&i.gzhead.comment.charCodeAt(i.gzindex++):0)}while(0!==r);i.gzhead.hcrc&&i.pending>n&&(t.adler=c(t.adler,i.pending_buf,i.pending-n,n)),0===r&&(i.status=103)}else i.status=103;if(103===i.status&&(i.gzhead.hcrc?(i.pending+2>i.pending_buf_size&&I(t),i.pending+2<=i.pending_buf_size&&(T(i,255&t.adler),T(i,t.adler>>8&255),t.adler=0,i.status=E)):i.status=E),0!==i.pending){if(I(t),0===t.avail_out)return i.last_flush=-1,b}else if(0===t.avail_in&&O(e)<=O(a)&&e!==f)return N(t,-5);if(666===i.status&&0!==t.avail_in)return N(t,-5);if(0!==t.avail_in||0!==i.lookahead||e!==d&&666!==i.status){var o=2===i.strategy?function(t,e){for(var a;;){if(0===t.lookahead&&(H(t),0===t.lookahead)){if(e===d)return A;break}if(t.match_length=0,a=h._tr_tally(t,0,t.window[t.strstart]),t.lookahead--,t.strstart++,a&&(U(t,!1),0===t.strm.avail_out))return A}return t.insert=0,e===f?(U(t,!0),0===t.strm.avail_out?R:C):t.last_lit&&(U(t,!1),0===t.strm.avail_out)?A:Z}(i,e):3===i.strategy?function(t,e){for(var a,i,n,r,s=t.window;;){if(t.lookahead<=z){if(H(t),t.lookahead<=z&&e===d)return A;if(0===t.lookahead)break}if(t.match_length=0,t.lookahead>=x&&0<t.strstart&&(i=s[n=t.strstart-1])===s[++n]&&i===s[++n]&&i===s[++n]){r=t.strstart+z;do{}while(i===s[++n]&&i===s[++n]&&i===s[++n]&&i===s[++n]&&i===s[++n]&&i===s[++n]&&i===s[++n]&&i===s[++n]&&n<r);t.match_length=z-(r-n),t.match_length>t.lookahead&&(t.match_length=t.lookahead)}if(t.match_length>=x?(a=h._tr_tally(t,1,t.match_length-x),t.lookahead-=t.match_length,t.strstart+=t.match_length,t.match_length=0):(a=h._tr_tally(t,0,t.window[t.strstart]),t.lookahead--,t.strstart++),a&&(U(t,!1),0===t.strm.avail_out))return A}return t.insert=0,e===f?(U(t,!0),0===t.strm.avail_out?R:C):t.last_lit&&(U(t,!1),0===t.strm.avail_out)?A:Z}(i,e):l[i.level].func(i,e);if(o!==R&&o!==C||(i.status=666),o===A||o===R)return 0===t.avail_out&&(i.last_flush=-1),b;if(o===Z&&(1===e?h._tr_align(i):5!==e&&(h._tr_stored_block(i,0,0,!1),3===e&&(D(i.head),0===i.lookahead&&(i.strstart=0,i.block_start=0,i.insert=0))),I(t),0===t.avail_out))return i.last_flush=-1,b}return e!==f?b:i.wrap<=0?1:(2===i.wrap?(T(i,255&t.adler),T(i,t.adler>>8&255),T(i,t.adler>>16&255),T(i,t.adler>>24&255),T(i,255&t.total_in),T(i,t.total_in>>8&255),T(i,t.total_in>>16&255),T(i,t.total_in>>24&255)):(F(i,t.adler>>>16),F(i,65535&t.adler)),I(t),0<i.wrap&&(i.wrap=-i.wrap),0!==i.pending?b:1)},a.deflateEnd=function(t){var e;return t&&t.state?(e=t.state.status)!==S&&69!==e&&73!==e&&91!==e&&103!==e&&e!==E&&666!==e?N(t,g):(t.state=null,e===E?N(t,-3):b):g},a.deflateSetDictionary=function(t,e){var a,i,n,r,s,o,l,h,d=e.length;if(!t||!t.state)return g;if(2===(r=(a=t.state).wrap)||1===r&&a.status!==S||a.lookahead)return g;for(1===r&&(t.adler=u(t.adler,e,d,0)),a.wrap=0,d>=a.w_size&&(0===r&&(D(a.head),a.strstart=0,a.block_start=0,a.insert=0),h=new _.Buf8(a.w_size),_.arraySet(h,e,d-a.w_size,a.w_size,0),e=h,d=a.w_size),s=t.avail_in,o=t.next_in,l=t.input,t.avail_in=d,t.next_in=0,t.input=e,H(a);a.lookahead>=x;){for(i=a.strstart,n=a.lookahead-(x-1);a.ins_h=(a.ins_h<<a.hash_shift^a.window[i+x-1])&a.hash_mask,a.prev[i&a.w_mask]=a.head[a.ins_h],a.head[a.ins_h]=i,i++,--n;);a.strstart=i,a.lookahead=x-1,H(a)}return a.strstart+=a.lookahead,a.block_start=a.strstart,a.insert=a.lookahead,a.lookahead=0,a.match_length=a.prev_length=x-1,a.match_available=0,t.next_in=o,t.input=l,t.avail_in=s,a.wrap=r,b},a.deflateInfo="pako deflate (from Nodeca project)"},{"../utils/common":3,"./adler32":5,"./crc32":7,"./messages":13,"./trees":14}],9:[function(t,e,a){"use strict";e.exports=function(){this.text=0,this.time=0,this.xflags=0,this.os=0,this.extra=null,this.extra_len=0,this.name="",this.comment="",this.hcrc=0,this.done=!1}},{}],10:[function(t,e,a){"use strict";e.exports=function(t,e){var a,i,n,r,s,o,l,h,d,f,_,u,c,b,g,m,w,p,v,k,y,x,z,B,S;a=t.state,i=t.next_in,B=t.input,n=i+(t.avail_in-5),r=t.next_out,S=t.output,s=r-(e-t.avail_out),o=r+(t.avail_out-257),l=a.dmax,h=a.wsize,d=a.whave,f=a.wnext,_=a.window,u=a.hold,c=a.bits,b=a.lencode,g=a.distcode,m=(1<<a.lenbits)-1,w=(1<<a.distbits)-1;t:do{c<15&&(u+=B[i++]<<c,c+=8,u+=B[i++]<<c,c+=8),p=b[u&m];e:for(;;){if(u>>>=v=p>>>24,c-=v,0===(v=p>>>16&255))S[r++]=65535&p;else{if(!(16&v)){if(0==(64&v)){p=b[(65535&p)+(u&(1<<v)-1)];continue e}if(32&v){a.mode=12;break t}t.msg="invalid literal/length code",a.mode=30;break t}k=65535&p,(v&=15)&&(c<v&&(u+=B[i++]<<c,c+=8),k+=u&(1<<v)-1,u>>>=v,c-=v),c<15&&(u+=B[i++]<<c,c+=8,u+=B[i++]<<c,c+=8),p=g[u&w];a:for(;;){if(u>>>=v=p>>>24,c-=v,!(16&(v=p>>>16&255))){if(0==(64&v)){p=g[(65535&p)+(u&(1<<v)-1)];continue a}t.msg="invalid distance code",a.mode=30;break t}if(y=65535&p,c<(v&=15)&&(u+=B[i++]<<c,(c+=8)<v&&(u+=B[i++]<<c,c+=8)),l<(y+=u&(1<<v)-1)){t.msg="invalid distance too far back",a.mode=30;break 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t;for(u=0;y=i[r+u++],a.head&&y&&a.length<65536&&(a.head.name+=String.fromCharCode(y)),y&&u<o;);if(512&a.flags&&(a.check=C(a.check,i,u,r)),o-=u,r+=u,y)break t}else a.head&&(a.head.name=null);a.length=0,a.mode=8;case 8:if(4096&a.flags){if(0===o)break t;for(u=0;y=i[r+u++],a.head&&y&&a.length<65536&&(a.head.comment+=String.fromCharCode(y)),y&&u<o;);if(512&a.flags&&(a.check=C(a.check,i,u,r)),o-=u,r+=u,y)break t}else a.head&&(a.head.comment=null);a.mode=9;case 9:if(512&a.flags){for(;d<16;){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}if(h!==(65535&a.check)){t.msg="header crc mismatch",a.mode=30;break}d=h=0}a.head&&(a.head.hcrc=a.flags>>9&1,a.head.done=!0),t.adler=a.check=0,a.mode=12;break;case 10:for(;d<32;){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}t.adler=a.check=L(h),d=h=0,a.mode=11;case 11:if(0===a.havedict)return t.next_out=s,t.avail_out=l,t.next_in=r,t.avail_in=o,a.hold=h,a.bits=d,2;t.adler=a.check=1,a.mode=12;case 12:if(5===e||6===e)break t;case 13:if(a.last){h>>>=7&d,d-=7&d,a.mode=27;break}for(;d<3;){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}switch(a.last=1&h,d-=1,3&(h>>>=1)){case 0:a.mode=14;break;case 1:if(H(a),a.mode=20,6!==e)break;h>>>=2,d-=2;break t;case 2:a.mode=17;break;case 3:t.msg="invalid block type",a.mode=30}h>>>=2,d-=2;break;case 14:for(h>>>=7&d,d-=7&d;d<32;){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}if((65535&h)!=(h>>>16^65535)){t.msg="invalid stored block lengths",a.mode=30;break}if(a.length=65535&h,d=h=0,a.mode=15,6===e)break t;case 15:a.mode=16;case 16:if(u=a.length){if(o<u&&(u=o),l<u&&(u=l),0===u)break t;Z.arraySet(n,i,r,u,s),o-=u,r+=u,l-=u,s+=u,a.length-=u;break}a.mode=12;break;case 17:for(;d<14;){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}if(a.nlen=257+(31&h),h>>>=5,d-=5,a.ndist=1+(31&h),h>>>=5,d-=5,a.ncode=4+(15&h),h>>>=4,d-=4,286<a.nlen||30<a.ndist){t.msg="too many length or distance symbols",a.mode=30;break}a.have=0,a.mode=18;case 18:for(;a.have<a.ncode;){for(;d<3;){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}a.lens[A[a.have++]]=7&h,h>>>=3,d-=3}for(;a.have<19;)a.lens[A[a.have++]]=0;if(a.lencode=a.lendyn,a.lenbits=7,z={bits:a.lenbits},x=O(0,a.lens,0,19,a.lencode,0,a.work,z),a.lenbits=z.bits,x){t.msg="invalid code lengths set",a.mode=30;break}a.have=0,a.mode=19;case 19:for(;a.have<a.nlen+a.ndist;){for(;m=(S=a.lencode[h&(1<<a.lenbits)-1])>>>16&255,w=65535&S,!((g=S>>>24)<=d);){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}if(w<16)h>>>=g,d-=g,a.lens[a.have++]=w;else{if(16===w){for(B=g+2;d<B;){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}if(h>>>=g,d-=g,0===a.have){t.msg="invalid bit length repeat",a.mode=30;break}y=a.lens[a.have-1],u=3+(3&h),h>>>=2,d-=2}else if(17===w){for(B=g+3;d<B;){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}d-=g,y=0,u=3+(7&(h>>>=g)),h>>>=3,d-=3}else{for(B=g+7;d<B;){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}d-=g,y=0,u=11+(127&(h>>>=g)),h>>>=7,d-=7}if(a.have+u>a.nlen+a.ndist){t.msg="invalid bit length repeat",a.mode=30;break}for(;u--;)a.lens[a.have++]=y}}if(30===a.mode)break;if(0===a.lens[256]){t.msg="invalid code -- missing end-of-block",a.mode=30;break}if(a.lenbits=9,z={bits:a.lenbits},x=O(D,a.lens,0,a.nlen,a.lencode,0,a.work,z),a.lenbits=z.bits,x){t.msg="invalid literal/lengths set",a.mode=30;break}if(a.distbits=6,a.distcode=a.distdyn,z={bits:a.distbits},x=O(I,a.lens,a.nlen,a.ndist,a.distcode,0,a.work,z),a.distbits=z.bits,x){t.msg="invalid distances set",a.mode=30;break}if(a.mode=20,6===e)break t;case 20:a.mode=21;case 21:if(6<=o&&258<=l){t.next_out=s,t.avail_out=l,t.next_in=r,t.avail_in=o,a.hold=h,a.bits=d,N(t,_),s=t.next_out,n=t.output,l=t.avail_out,r=t.next_in,i=t.input,o=t.avail_in,h=a.hold,d=a.bits,12===a.mode&&(a.back=-1);break}for(a.back=0;m=(S=a.lencode[h&(1<<a.lenbits)-1])>>>16&255,w=65535&S,!((g=S>>>24)<=d);){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}if(m&&0==(240&m)){for(p=g,v=m,k=w;m=(S=a.lencode[k+((h&(1<<p+v)-1)>>p)])>>>16&255,w=65535&S,!(p+(g=S>>>24)<=d);){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}h>>>=p,d-=p,a.back+=p}if(h>>>=g,d-=g,a.back+=g,a.length=w,0===m){a.mode=26;break}if(32&m){a.back=-1,a.mode=12;break}if(64&m){t.msg="invalid literal/length code",a.mode=30;break}a.extra=15&m,a.mode=22;case 22:if(a.extra){for(B=a.extra;d<B;){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}a.length+=h&(1<<a.extra)-1,h>>>=a.extra,d-=a.extra,a.back+=a.extra}a.was=a.length,a.mode=23;case 23:for(;m=(S=a.distcode[h&(1<<a.distbits)-1])>>>16&255,w=65535&S,!((g=S>>>24)<=d);){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}if(0==(240&m)){for(p=g,v=m,k=w;m=(S=a.distcode[k+((h&(1<<p+v)-1)>>p)])>>>16&255,w=65535&S,!(p+(g=S>>>24)<=d);){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}h>>>=p,d-=p,a.back+=p}if(h>>>=g,d-=g,a.back+=g,64&m){t.msg="invalid distance code",a.mode=30;break}a.offset=w,a.extra=15&m,a.mode=24;case 24:if(a.extra){for(B=a.extra;d<B;){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}a.offset+=h&(1<<a.extra)-1,h>>>=a.extra,d-=a.extra,a.back+=a.extra}if(a.offset>a.dmax){t.msg="invalid distance too far back",a.mode=30;break}a.mode=25;case 25:if(0===l)break t;if(u=_-l,a.offset>u){if((u=a.offset-u)>a.whave&&a.sane){t.msg="invalid distance too far back",a.mode=30;break}u>a.wnext?(u-=a.wnext,c=a.wsize-u):c=a.wnext-u,u>a.length&&(u=a.length),b=a.window}else b=n,c=s-a.offset,u=a.length;for(l<u&&(u=l),l-=u,a.length-=u;n[s++]=b[c++],--u;);0===a.length&&(a.mode=21);break;case 26:if(0===l)break t;n[s++]=a.length,l--,a.mode=21;break;case 27:if(a.wrap){for(;d<32;){if(0===o)break t;o--,h|=i[r++]<<d,d+=8}if(_-=l,t.total_out+=_,a.total+=_,_&&(t.adler=a.check=a.flags?C(a.check,n,_,s-_):R(a.check,n,_,s-_)),_=l,(a.flags?h:L(h))!==a.check){t.msg="incorrect data check",a.mode=30;break}d=h=0}a.mode=28;case 28:if(a.wrap&&a.flags){for(;d<32;){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}if(h!==(4294967295&a.total)){t.msg="incorrect length check",a.mode=30;break}d=h=0}a.mode=29;case 29:x=1;break t;case 30:x=-3;break t;case 31:return-4;case 32:default:return T}return t.next_out=s,t.avail_out=l,t.next_in=r,t.avail_in=o,a.hold=h,a.bits=d,(a.wsize||_!==t.avail_out&&a.mode<30&&(a.mode<27||4!==e))&&j(t,t.output,t.next_out,_-t.avail_out)?(a.mode=31,-4):(f-=t.avail_in,_-=t.avail_out,t.total_in+=f,t.total_out+=_,a.total+=_,a.wrap&&_&&(t.adler=a.check=a.flags?C(a.check,n,_,t.next_out-_):R(a.check,n,_,t.next_out-_)),t.data_type=a.bits+(a.last?64:0)+(12===a.mode?128:0)+(20===a.mode||15===a.mode?256:0),(0===f&&0===_||4===e)&&x===U&&(x=-5),x)},a.inflateEnd=function(t){if(!t||!t.state)return T;var e=t.state;return e.window&&(e.window=null),t.state=null,U},a.inflateGetHeader=function(t,e){var a;return t&&t.state?0==(2&(a=t.state).wrap)?T:((a.head=e).done=!1,U):T},a.inflateSetDictionary=function(t,e){var a,i=e.length;return t&&t.state?0!==(a=t.state).wrap&&11!==a.mode?T:11===a.mode&&R(1,e,i,0)!==a.check?-3:j(t,e,i,i)?(a.mode=31,-4):(a.havedict=1,U):T},a.inflateInfo="pako inflate (from Nodeca project)"},{"../utils/common":3,"./adler32":5,"./crc32":7,"./inffast":10,"./inftrees":12}],12:[function(t,e,a){"use strict";var D=t("../utils/common"),I=[3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258,0,0],U=[16,16,16,16,16,16,16,16,17,17,17,17,18,18,18,18,19,19,19,19,20,20,20,20,21,21,21,21,16,72,78],T=[1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0],F=[16,16,16,16,17,17,18,18,19,19,20,20,21,21,22,22,23,23,24,24,25,25,26,26,27,27,28,28,29,29,64,64];e.exports=function(t,e,a,i,n,r,s,o){var l,h,d,f,_,u,c,b,g,m=o.bits,w=0,p=0,v=0,k=0,y=0,x=0,z=0,B=0,S=0,E=0,A=null,Z=0,R=new D.Buf16(16),C=new D.Buf16(16),N=null,O=0;for(w=0;w<=15;w++)R[w]=0;for(p=0;p<i;p++)R[e[a+p]]++;for(y=m,k=15;1<=k&&0===R[k];k--);if(k<y&&(y=k),0===k)return n[r++]=20971520,n[r++]=20971520,o.bits=1,0;for(v=1;v<k&&0===R[v];v++);for(y<v&&(y=v),w=B=1;w<=15;w++)if(B<<=1,(B-=R[w])<0)return-1;if(0<B&&(0===t||1!==k))return-1;for(C[1]=0,w=1;w<15;w++)C[w+1]=C[w]+R[w];for(p=0;p<i;p++)0!==e[a+p]&&(s[C[e[a+p]]++]=p);if(0===t?(A=N=s,u=19):1===t?(A=I,Z-=257,N=U,O-=257,u=256):(A=T,N=F,u=-1),w=v,_=r,z=p=E=0,d=-1,f=(S=1<<(x=y))-1,1===t&&852<S||2===t&&592<S)return 1;for(;;){for(c=w-z,s[p]<u?(b=0,g=s[p]):s[p]>u?(b=N[O+s[p]],g=A[Z+s[p]]):(b=96,g=0),l=1<<w-z,v=h=1<<x;n[_+(E>>z)+(h-=l)]=c<<24|b<<16|g|0,0!==h;);for(l=1<<w-1;E&l;)l>>=1;if(0!==l?(E&=l-1,E+=l):E=0,p++,0==--R[w]){if(w===k)break;w=e[a+s[p]]}if(y<w&&(E&f)!==d){for(0===z&&(z=y),_+=v,B=1<<(x=w-z);x+z<k&&!((B-=R[x+z])<=0);)x++,B<<=1;if(S+=1<<x,1===t&&852<S||2===t&&592<S)return 1;n[d=E&f]=y<<24|x<<16|_-r|0}}return 0!==E&&(n[_+E]=w-z<<24|64<<16|0),o.bits=y,0}},{"../utils/common":3}],13:[function(t,e,a){"use strict";e.exports={2:"need dictionary",1:"stream end",0:"","-1":"file error","-2":"stream error","-3":"data error","-4":"insufficient memory","-5":"buffer error","-6":"incompatible version"}},{}],14:[function(t,e,a){"use strict";var l=t("../utils/common"),o=0,h=1;function i(t){for(var e=t.length;0<=--e;)t[e]=0}var d=0,s=29,f=256,_=f+1+s,u=30,c=19,g=2*_+1,m=15,n=16,b=7,w=256,p=16,v=17,k=18,y=[0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0],x=[0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13],z=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7],B=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15],S=new Array(2*(_+2));i(S);var E=new Array(2*u);i(E);var A=new Array(512);i(A);var Z=new Array(256);i(Z);var R=new Array(s);i(R);var C,N,O,D=new Array(u);function 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M(t){8<t.bi_valid?T(t,t.bi_buf):0<t.bi_valid&&(t.pending_buf[t.pending++]=t.bi_buf),t.bi_buf=0,t.bi_valid=0}function P(t,e,a,i){var n=2*e,r=2*a;return t[n]<t[r]||t[n]===t[r]&&i[e]<=i[a]}function Y(t,e,a){for(var i=t.heap[a],n=a<<1;n<=t.heap_len&&(n<t.heap_len&&P(e,t.heap[n+1],t.heap[n],t.depth)&&n++,!P(e,i,t.heap[n],t.depth));)t.heap[a]=t.heap[n],a=n,n<<=1;t.heap[a]=i}function q(t,e,a){var i,n,r,s,o=0;if(0!==t.last_lit)for(;i=t.pending_buf[t.d_buf+2*o]<<8|t.pending_buf[t.d_buf+2*o+1],n=t.pending_buf[t.l_buf+o],o++,0===i?L(t,n,e):(L(t,(r=Z[n])+f+1,e),0!==(s=y[r])&&F(t,n-=R[r],s),L(t,r=U(--i),a),0!==(s=x[r])&&F(t,i-=D[r],s)),o<t.last_lit;);L(t,w,e)}function G(t,e){var 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strict";e.exports=function(){this.input=null,this.next_in=0,this.avail_in=0,this.total_in=0,this.output=null,this.next_out=0,this.avail_out=0,this.total_out=0,this.msg="",this.state=null,this.data_type=2,this.adler=0}},{}],"/":[function(t,e,a){"use strict";var i={};(0,t("./lib/utils/common").assign)(i,t("./lib/deflate"),t("./lib/inflate"),t("./lib/zlib/constants")),e.exports=i},{"./lib/deflate":1,"./lib/inflate":2,"./lib/utils/common":3,"./lib/zlib/constants":6}]},{},[])("/")}); diff --git a/school/node_modules/pako/dist/pako_deflate.js b/school/node_modules/pako/dist/pako_deflate.js deleted file mode 100644 index d6bbaa1..0000000 --- a/school/node_modules/pako/dist/pako_deflate.js +++ /dev/null @@ -1,3997 +0,0 @@ -/* pako 1.0.11 nodeca/pako */(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.pako = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){ -'use strict'; - - -var TYPED_OK = (typeof Uint8Array !== 'undefined') && - (typeof Uint16Array !== 'undefined') && - (typeof Int32Array !== 'undefined'); - -function _has(obj, key) { - return Object.prototype.hasOwnProperty.call(obj, key); -} - -exports.assign = function (obj /*from1, from2, from3, ...*/) { - var sources = Array.prototype.slice.call(arguments, 1); - while (sources.length) { - var source = sources.shift(); - if (!source) { continue; } - - if (typeof source !== 'object') { - throw new TypeError(source + 'must be non-object'); - } - - for (var p in source) { - if (_has(source, p)) { - obj[p] = source[p]; - } - } - } - - return obj; -}; - - -// reduce buffer size, avoiding mem copy -exports.shrinkBuf = function (buf, size) { - if (buf.length === size) { return buf; } - if (buf.subarray) { return buf.subarray(0, size); } - buf.length = size; - return buf; -}; - - -var fnTyped = { - arraySet: function (dest, src, src_offs, len, dest_offs) { - if (src.subarray && dest.subarray) { - dest.set(src.subarray(src_offs, src_offs + len), dest_offs); - return; - } - // Fallback to ordinary array - for (var i = 0; i < len; i++) { - dest[dest_offs + i] = src[src_offs + i]; - } - }, - // Join array of chunks to single array. - flattenChunks: function (chunks) { - var i, l, len, pos, chunk, result; - - // calculate data length - len = 0; - for (i = 0, l = chunks.length; i < l; i++) { - len += chunks[i].length; - } - - // join chunks - result = new Uint8Array(len); - pos = 0; - for (i = 0, l = chunks.length; i < l; i++) { - chunk = chunks[i]; - result.set(chunk, pos); - pos += chunk.length; - } - - return result; - } -}; - -var fnUntyped = { - arraySet: function (dest, src, src_offs, len, dest_offs) { - for (var i = 0; i < len; i++) { - dest[dest_offs + i] = src[src_offs + i]; - } - }, - // Join array of chunks to single array. - flattenChunks: function (chunks) { - return [].concat.apply([], chunks); - } -}; - - -// Enable/Disable typed arrays use, for testing -// -exports.setTyped = function (on) { - if (on) { - exports.Buf8 = Uint8Array; - exports.Buf16 = Uint16Array; - exports.Buf32 = Int32Array; - exports.assign(exports, fnTyped); - } else { - exports.Buf8 = Array; - exports.Buf16 = Array; - exports.Buf32 = Array; - exports.assign(exports, fnUntyped); - } -}; - -exports.setTyped(TYPED_OK); - -},{}],2:[function(require,module,exports){ -// String encode/decode helpers -'use strict'; - - -var utils = require('./common'); - - -// Quick check if we can use fast array to bin string conversion -// -// - apply(Array) can fail on Android 2.2 -// - apply(Uint8Array) can fail on iOS 5.1 Safari -// -var STR_APPLY_OK = true; -var STR_APPLY_UIA_OK = true; - -try { String.fromCharCode.apply(null, [ 0 ]); } catch (__) { STR_APPLY_OK = false; } -try { String.fromCharCode.apply(null, new Uint8Array(1)); } catch (__) { STR_APPLY_UIA_OK = false; } - - -// Table with utf8 lengths (calculated by first byte of sequence) -// Note, that 5 & 6-byte values and some 4-byte values can not be represented in JS, -// because max possible codepoint is 0x10ffff -var _utf8len = new utils.Buf8(256); -for (var q = 0; q < 256; q++) { - _utf8len[q] = (q >= 252 ? 6 : q >= 248 ? 5 : q >= 240 ? 4 : q >= 224 ? 3 : q >= 192 ? 2 : 1); -} -_utf8len[254] = _utf8len[254] = 1; // Invalid sequence start - - -// convert string to array (typed, when possible) -exports.string2buf = function (str) { - var buf, c, c2, m_pos, i, str_len = str.length, buf_len = 0; - - // count binary size - for (m_pos = 0; m_pos < str_len; m_pos++) { - c = str.charCodeAt(m_pos); - if ((c & 0xfc00) === 0xd800 && (m_pos + 1 < str_len)) { - c2 = str.charCodeAt(m_pos + 1); - if ((c2 & 0xfc00) === 0xdc00) { - c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00); - m_pos++; - } - } - buf_len += c < 0x80 ? 1 : c < 0x800 ? 2 : c < 0x10000 ? 3 : 4; - } - - // allocate buffer - buf = new utils.Buf8(buf_len); - - // convert - for (i = 0, m_pos = 0; i < buf_len; m_pos++) { - c = str.charCodeAt(m_pos); - if ((c & 0xfc00) === 0xd800 && (m_pos + 1 < str_len)) { - c2 = str.charCodeAt(m_pos + 1); - if ((c2 & 0xfc00) === 0xdc00) { - c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00); - m_pos++; - } - } - if (c < 0x80) { - /* one byte */ - buf[i++] = c; - } else if (c < 0x800) { - /* two bytes */ - buf[i++] = 0xC0 | (c >>> 6); - buf[i++] = 0x80 | (c & 0x3f); - } else if (c < 0x10000) { - /* three bytes */ - buf[i++] = 0xE0 | (c >>> 12); - buf[i++] = 0x80 | (c >>> 6 & 0x3f); - buf[i++] = 0x80 | (c & 0x3f); - } else { - /* four bytes */ - buf[i++] = 0xf0 | (c >>> 18); - buf[i++] = 0x80 | (c >>> 12 & 0x3f); - buf[i++] = 0x80 | (c >>> 6 & 0x3f); - buf[i++] = 0x80 | (c & 0x3f); - } - } - - return buf; -}; - -// Helper (used in 2 places) -function buf2binstring(buf, len) { - // On Chrome, the arguments in a function call that are allowed is `65534`. - // If the length of the buffer is smaller than that, we can use this optimization, - // otherwise we will take a slower path. - if (len < 65534) { - if ((buf.subarray && STR_APPLY_UIA_OK) || (!buf.subarray && STR_APPLY_OK)) { - return String.fromCharCode.apply(null, utils.shrinkBuf(buf, len)); - } - } - - var result = ''; - for (var i = 0; i < len; i++) { - result += String.fromCharCode(buf[i]); - } - return result; -} - - -// Convert byte array to binary string -exports.buf2binstring = function (buf) { - return buf2binstring(buf, buf.length); -}; - - -// Convert binary string (typed, when possible) -exports.binstring2buf = function (str) { - var buf = new utils.Buf8(str.length); - for (var i = 0, len = buf.length; i < len; i++) { - buf[i] = str.charCodeAt(i); - } - return buf; -}; - - -// convert array to string -exports.buf2string = function (buf, max) { - var i, out, c, c_len; - var len = max || buf.length; - - // Reserve max possible length (2 words per char) - // NB: by unknown reasons, Array is significantly faster for - // String.fromCharCode.apply than Uint16Array. - var utf16buf = new Array(len * 2); - - for (out = 0, i = 0; i < len;) { - c = buf[i++]; - // quick process ascii - if (c < 0x80) { utf16buf[out++] = c; continue; } - - c_len = _utf8len[c]; - // skip 5 & 6 byte codes - if (c_len > 4) { utf16buf[out++] = 0xfffd; i += c_len - 1; continue; } - - // apply mask on first byte - c &= c_len === 2 ? 0x1f : c_len === 3 ? 0x0f : 0x07; - // join the rest - while (c_len > 1 && i < len) { - c = (c << 6) | (buf[i++] & 0x3f); - c_len--; - } - - // terminated by end of string? - if (c_len > 1) { utf16buf[out++] = 0xfffd; continue; } - - if (c < 0x10000) { - utf16buf[out++] = c; - } else { - c -= 0x10000; - utf16buf[out++] = 0xd800 | ((c >> 10) & 0x3ff); - utf16buf[out++] = 0xdc00 | (c & 0x3ff); - } - } - - return buf2binstring(utf16buf, out); -}; - - -// Calculate max possible position in utf8 buffer, -// that will not break sequence. If that's not possible -// - (very small limits) return max size as is. -// -// buf[] - utf8 bytes array -// max - length limit (mandatory); -exports.utf8border = function (buf, max) { - var pos; - - max = max || buf.length; - if (max > buf.length) { max = buf.length; } - - // go back from last position, until start of sequence found - pos = max - 1; - while (pos >= 0 && (buf[pos] & 0xC0) === 0x80) { pos--; } - - // Very small and broken sequence, - // return max, because we should return something anyway. - if (pos < 0) { return max; } - - // If we came to start of buffer - that means buffer is too small, - // return max too. - if (pos === 0) { return max; } - - return (pos + _utf8len[buf[pos]] > max) ? pos : max; -}; - -},{"./common":1}],3:[function(require,module,exports){ -'use strict'; - -// Note: adler32 takes 12% for level 0 and 2% for level 6. -// It isn't worth it to make additional optimizations as in original. -// Small size is preferable. - -// (C) 1995-2013 Jean-loup Gailly and Mark Adler -// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would be -// appreciated but is not required. -// 2. Altered source versions must be plainly marked as such, and must not be -// misrepresented as being the original software. -// 3. This notice may not be removed or altered from any source distribution. - -function adler32(adler, buf, len, pos) { - var s1 = (adler & 0xffff) |0, - s2 = ((adler >>> 16) & 0xffff) |0, - n = 0; - - while (len !== 0) { - // Set limit ~ twice less than 5552, to keep - // s2 in 31-bits, because we force signed ints. - // in other case %= will fail. - n = len > 2000 ? 2000 : len; - len -= n; - - do { - s1 = (s1 + buf[pos++]) |0; - s2 = (s2 + s1) |0; - } while (--n); - - s1 %= 65521; - s2 %= 65521; - } - - return (s1 | (s2 << 16)) |0; -} - - -module.exports = adler32; - -},{}],4:[function(require,module,exports){ -'use strict'; - -// Note: we can't get significant speed boost here. -// So write code to minimize size - no pregenerated tables -// and array tools dependencies. - -// (C) 1995-2013 Jean-loup Gailly and Mark Adler -// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would be -// appreciated but is not required. -// 2. Altered source versions must be plainly marked as such, and must not be -// misrepresented as being the original software. -// 3. This notice may not be removed or altered from any source distribution. - -// Use ordinary array, since untyped makes no boost here -function makeTable() { - var c, table = []; - - for (var n = 0; n < 256; n++) { - c = n; - for (var k = 0; k < 8; k++) { - c = ((c & 1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1)); - } - table[n] = c; - } - - return table; -} - -// Create table on load. Just 255 signed longs. Not a problem. -var crcTable = makeTable(); - - -function crc32(crc, buf, len, pos) { - var t = crcTable, - end = pos + len; - - crc ^= -1; - - for (var i = pos; i < end; i++) { - crc = (crc >>> 8) ^ t[(crc ^ buf[i]) & 0xFF]; - } - - return (crc ^ (-1)); // >>> 0; -} - - -module.exports = crc32; - -},{}],5:[function(require,module,exports){ -'use strict'; - -// (C) 1995-2013 Jean-loup Gailly and Mark Adler -// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would be -// appreciated but is not required. -// 2. Altered source versions must be plainly marked as such, and must not be -// misrepresented as being the original software. -// 3. This notice may not be removed or altered from any source distribution. - -var utils = require('../utils/common'); -var trees = require('./trees'); -var adler32 = require('./adler32'); -var crc32 = require('./crc32'); -var msg = require('./messages'); - -/* Public constants ==========================================================*/ -/* ===========================================================================*/ - - -/* Allowed flush values; see deflate() and inflate() below for details */ -var Z_NO_FLUSH = 0; -var Z_PARTIAL_FLUSH = 1; -//var Z_SYNC_FLUSH = 2; -var Z_FULL_FLUSH = 3; -var Z_FINISH = 4; -var Z_BLOCK = 5; -//var Z_TREES = 6; - - -/* Return codes for the compression/decompression functions. Negative values - * are errors, positive values are used for special but normal events. - */ -var Z_OK = 0; -var Z_STREAM_END = 1; -//var Z_NEED_DICT = 2; -//var Z_ERRNO = -1; -var Z_STREAM_ERROR = -2; -var Z_DATA_ERROR = -3; -//var Z_MEM_ERROR = -4; -var Z_BUF_ERROR = -5; -//var Z_VERSION_ERROR = -6; - - -/* compression levels */ -//var Z_NO_COMPRESSION = 0; -//var Z_BEST_SPEED = 1; -//var Z_BEST_COMPRESSION = 9; -var Z_DEFAULT_COMPRESSION = -1; - - -var Z_FILTERED = 1; -var Z_HUFFMAN_ONLY = 2; -var Z_RLE = 3; -var Z_FIXED = 4; -var Z_DEFAULT_STRATEGY = 0; - -/* Possible values of the data_type field (though see inflate()) */ -//var Z_BINARY = 0; -//var Z_TEXT = 1; -//var Z_ASCII = 1; // = Z_TEXT -var Z_UNKNOWN = 2; - - -/* The deflate compression method */ -var Z_DEFLATED = 8; - -/*============================================================================*/ - - -var MAX_MEM_LEVEL = 9; -/* Maximum value for memLevel in deflateInit2 */ -var MAX_WBITS = 15; -/* 32K LZ77 window */ -var DEF_MEM_LEVEL = 8; - - -var LENGTH_CODES = 29; -/* number of length codes, not counting the special END_BLOCK code */ -var LITERALS = 256; -/* number of literal bytes 0..255 */ -var L_CODES = LITERALS + 1 + LENGTH_CODES; -/* number of Literal or Length codes, including the END_BLOCK code */ -var D_CODES = 30; -/* number of distance codes */ -var BL_CODES = 19; -/* number of codes used to transfer the bit lengths */ -var HEAP_SIZE = 2 * L_CODES + 1; -/* maximum heap size */ -var MAX_BITS = 15; -/* All codes must not exceed MAX_BITS bits */ - -var MIN_MATCH = 3; -var MAX_MATCH = 258; -var MIN_LOOKAHEAD = (MAX_MATCH + MIN_MATCH + 1); - -var PRESET_DICT = 0x20; - -var INIT_STATE = 42; -var EXTRA_STATE = 69; -var NAME_STATE = 73; -var COMMENT_STATE = 91; -var HCRC_STATE = 103; -var BUSY_STATE = 113; -var FINISH_STATE = 666; - -var BS_NEED_MORE = 1; /* block not completed, need more input or more output */ -var BS_BLOCK_DONE = 2; /* block flush performed */ -var BS_FINISH_STARTED = 3; /* finish started, need only more output at next deflate */ -var BS_FINISH_DONE = 4; /* finish done, accept no more input or output */ - -var OS_CODE = 0x03; // Unix :) . Don't detect, use this default. - -function err(strm, errorCode) { - strm.msg = msg[errorCode]; - return errorCode; -} - -function rank(f) { - return ((f) << 1) - ((f) > 4 ? 9 : 0); -} - -function zero(buf) { var len = buf.length; while (--len >= 0) { buf[len] = 0; } } - - -/* ========================================================================= - * Flush as much pending output as possible. All deflate() output goes - * through this function so some applications may wish to modify it - * to avoid allocating a large strm->output buffer and copying into it. - * (See also read_buf()). - */ -function flush_pending(strm) { - var s = strm.state; - - //_tr_flush_bits(s); - var len = s.pending; - if (len > strm.avail_out) { - len = strm.avail_out; - } - if (len === 0) { return; } - - utils.arraySet(strm.output, s.pending_buf, s.pending_out, len, strm.next_out); - strm.next_out += len; - s.pending_out += len; - strm.total_out += len; - strm.avail_out -= len; - s.pending -= len; - if (s.pending === 0) { - s.pending_out = 0; - } -} - - -function flush_block_only(s, last) { - trees._tr_flush_block(s, (s.block_start >= 0 ? s.block_start : -1), s.strstart - s.block_start, last); - s.block_start = s.strstart; - flush_pending(s.strm); -} - - -function put_byte(s, b) { - s.pending_buf[s.pending++] = b; -} - - -/* ========================================================================= - * Put a short in the pending buffer. The 16-bit value is put in MSB order. - * IN assertion: the stream state is correct and there is enough room in - * pending_buf. - */ -function putShortMSB(s, b) { -// put_byte(s, (Byte)(b >> 8)); -// put_byte(s, (Byte)(b & 0xff)); - s.pending_buf[s.pending++] = (b >>> 8) & 0xff; - s.pending_buf[s.pending++] = b & 0xff; -} - - -/* =========================================================================== - * Read a new buffer from the current input stream, update the adler32 - * and total number of bytes read. All deflate() input goes through - * this function so some applications may wish to modify it to avoid - * allocating a large strm->input buffer and copying from it. - * (See also flush_pending()). - */ -function read_buf(strm, buf, start, size) { - var len = strm.avail_in; - - if (len > size) { len = size; } - if (len === 0) { return 0; } - - strm.avail_in -= len; - - // zmemcpy(buf, strm->next_in, len); - utils.arraySet(buf, strm.input, strm.next_in, len, start); - if (strm.state.wrap === 1) { - strm.adler = adler32(strm.adler, buf, len, start); - } - - else if (strm.state.wrap === 2) { - strm.adler = crc32(strm.adler, buf, len, start); - } - - strm.next_in += len; - strm.total_in += len; - - return len; -} - - -/* =========================================================================== - * Set match_start to the longest match starting at the given string and - * return its length. Matches shorter or equal to prev_length are discarded, - * in which case the result is equal to prev_length and match_start is - * garbage. - * IN assertions: cur_match is the head of the hash chain for the current - * string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1 - * OUT assertion: the match length is not greater than s->lookahead. - */ -function longest_match(s, cur_match) { - var chain_length = s.max_chain_length; /* max hash chain length */ - var scan = s.strstart; /* current string */ - var match; /* matched string */ - var len; /* length of current match */ - var best_len = s.prev_length; /* best match length so far */ - var nice_match = s.nice_match; /* stop if match long enough */ - var limit = (s.strstart > (s.w_size - MIN_LOOKAHEAD)) ? - s.strstart - (s.w_size - MIN_LOOKAHEAD) : 0/*NIL*/; - - var _win = s.window; // shortcut - - var wmask = s.w_mask; - var prev = s.prev; - - /* Stop when cur_match becomes <= limit. To simplify the code, - * we prevent matches with the string of window index 0. - */ - - var strend = s.strstart + MAX_MATCH; - var scan_end1 = _win[scan + best_len - 1]; - var scan_end = _win[scan + best_len]; - - /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16. - * It is easy to get rid of this optimization if necessary. - */ - // Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever"); - - /* Do not waste too much time if we already have a good match: */ - if (s.prev_length >= s.good_match) { - chain_length >>= 2; - } - /* Do not look for matches beyond the end of the input. This is necessary - * to make deflate deterministic. - */ - if (nice_match > s.lookahead) { nice_match = s.lookahead; } - - // Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead"); - - do { - // Assert(cur_match < s->strstart, "no future"); - match = cur_match; - - /* Skip to next match if the match length cannot increase - * or if the match length is less than 2. Note that the checks below - * for insufficient lookahead only occur occasionally for performance - * reasons. Therefore uninitialized memory will be accessed, and - * conditional jumps will be made that depend on those values. - * However the length of the match is limited to the lookahead, so - * the output of deflate is not affected by the uninitialized values. - */ - - if (_win[match + best_len] !== scan_end || - _win[match + best_len - 1] !== scan_end1 || - _win[match] !== _win[scan] || - _win[++match] !== _win[scan + 1]) { - continue; - } - - /* The check at best_len-1 can be removed because it will be made - * again later. (This heuristic is not always a win.) - * It is not necessary to compare scan[2] and match[2] since they - * are always equal when the other bytes match, given that - * the hash keys are equal and that HASH_BITS >= 8. - */ - scan += 2; - match++; - // Assert(*scan == *match, "match[2]?"); - - /* We check for insufficient lookahead only every 8th comparison; - * the 256th check will be made at strstart+258. - */ - do { - /*jshint noempty:false*/ - } while (_win[++scan] === _win[++match] && _win[++scan] === _win[++match] && - _win[++scan] === _win[++match] && _win[++scan] === _win[++match] && - _win[++scan] === _win[++match] && _win[++scan] === _win[++match] && - _win[++scan] === _win[++match] && _win[++scan] === _win[++match] && - scan < strend); - - // Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan"); - - len = MAX_MATCH - (strend - scan); - scan = strend - MAX_MATCH; - - if (len > best_len) { - s.match_start = cur_match; - best_len = len; - if (len >= nice_match) { - break; - } - scan_end1 = _win[scan + best_len - 1]; - scan_end = _win[scan + best_len]; - } - } while ((cur_match = prev[cur_match & wmask]) > limit && --chain_length !== 0); - - if (best_len <= s.lookahead) { - return best_len; - } - return s.lookahead; -} - - -/* =========================================================================== - * Fill the window when the lookahead becomes insufficient. - * Updates strstart and lookahead. - * - * IN assertion: lookahead < MIN_LOOKAHEAD - * OUT assertions: strstart <= window_size-MIN_LOOKAHEAD - * At least one byte has been read, or avail_in == 0; reads are - * performed for at least two bytes (required for the zip translate_eol - * option -- not supported here). - */ -function fill_window(s) { - var _w_size = s.w_size; - var p, n, m, more, str; - - //Assert(s->lookahead < MIN_LOOKAHEAD, "already enough lookahead"); - - do { - more = s.window_size - s.lookahead - s.strstart; - - // JS ints have 32 bit, block below not needed - /* Deal with !@#$% 64K limit: */ - //if (sizeof(int) <= 2) { - // if (more == 0 && s->strstart == 0 && s->lookahead == 0) { - // more = wsize; - // - // } else if (more == (unsigned)(-1)) { - // /* Very unlikely, but possible on 16 bit machine if - // * strstart == 0 && lookahead == 1 (input done a byte at time) - // */ - // more--; - // } - //} - - - /* If the window is almost full and there is insufficient lookahead, - * move the upper half to the lower one to make room in the upper half. - */ - if (s.strstart >= _w_size + (_w_size - MIN_LOOKAHEAD)) { - - utils.arraySet(s.window, s.window, _w_size, _w_size, 0); - s.match_start -= _w_size; - s.strstart -= _w_size; - /* we now have strstart >= MAX_DIST */ - s.block_start -= _w_size; - - /* Slide the hash table (could be avoided with 32 bit values - at the expense of memory usage). We slide even when level == 0 - to keep the hash table consistent if we switch back to level > 0 - later. (Using level 0 permanently is not an optimal usage of - zlib, so we don't care about this pathological case.) - */ - - n = s.hash_size; - p = n; - do { - m = s.head[--p]; - s.head[p] = (m >= _w_size ? m - _w_size : 0); - } while (--n); - - n = _w_size; - p = n; - do { - m = s.prev[--p]; - s.prev[p] = (m >= _w_size ? m - _w_size : 0); - /* If n is not on any hash chain, prev[n] is garbage but - * its value will never be used. - */ - } while (--n); - - more += _w_size; - } - if (s.strm.avail_in === 0) { - break; - } - - /* If there was no sliding: - * strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 && - * more == window_size - lookahead - strstart - * => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1) - * => more >= window_size - 2*WSIZE + 2 - * In the BIG_MEM or MMAP case (not yet supported), - * window_size == input_size + MIN_LOOKAHEAD && - * strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD. - * Otherwise, window_size == 2*WSIZE so more >= 2. - * If there was sliding, more >= WSIZE. So in all cases, more >= 2. - */ - //Assert(more >= 2, "more < 2"); - n = read_buf(s.strm, s.window, s.strstart + s.lookahead, more); - s.lookahead += n; - - /* Initialize the hash value now that we have some input: */ - if (s.lookahead + s.insert >= MIN_MATCH) { - str = s.strstart - s.insert; - s.ins_h = s.window[str]; - - /* UPDATE_HASH(s, s->ins_h, s->window[str + 1]); */ - s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + 1]) & s.hash_mask; -//#if MIN_MATCH != 3 -// Call update_hash() MIN_MATCH-3 more times -//#endif - while (s.insert) { - /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */ - s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + MIN_MATCH - 1]) & s.hash_mask; - - s.prev[str & s.w_mask] = s.head[s.ins_h]; - s.head[s.ins_h] = str; - str++; - s.insert--; - if (s.lookahead + s.insert < MIN_MATCH) { - break; - } - } - } - /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage, - * but this is not important since only literal bytes will be emitted. - */ - - } while (s.lookahead < MIN_LOOKAHEAD && s.strm.avail_in !== 0); - - /* If the WIN_INIT bytes after the end of the current data have never been - * written, then zero those bytes in order to avoid memory check reports of - * the use of uninitialized (or uninitialised as Julian writes) bytes by - * the longest match routines. Update the high water mark for the next - * time through here. WIN_INIT is set to MAX_MATCH since the longest match - * routines allow scanning to strstart + MAX_MATCH, ignoring lookahead. - */ -// if (s.high_water < s.window_size) { -// var curr = s.strstart + s.lookahead; -// var init = 0; -// -// if (s.high_water < curr) { -// /* Previous high water mark below current data -- zero WIN_INIT -// * bytes or up to end of window, whichever is less. -// */ -// init = s.window_size - curr; -// if (init > WIN_INIT) -// init = WIN_INIT; -// zmemzero(s->window + curr, (unsigned)init); -// s->high_water = curr + init; -// } -// else if (s->high_water < (ulg)curr + WIN_INIT) { -// /* High water mark at or above current data, but below current data -// * plus WIN_INIT -- zero out to current data plus WIN_INIT, or up -// * to end of window, whichever is less. -// */ -// init = (ulg)curr + WIN_INIT - s->high_water; -// if (init > s->window_size - s->high_water) -// init = s->window_size - s->high_water; -// zmemzero(s->window + s->high_water, (unsigned)init); -// s->high_water += init; -// } -// } -// -// Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD, -// "not enough room for search"); -} - -/* =========================================================================== - * Copy without compression as much as possible from the input stream, return - * the current block state. - * This function does not insert new strings in the dictionary since - * uncompressible data is probably not useful. This function is used - * only for the level=0 compression option. - * NOTE: this function should be optimized to avoid extra copying from - * window to pending_buf. - */ -function deflate_stored(s, flush) { - /* Stored blocks are limited to 0xffff bytes, pending_buf is limited - * to pending_buf_size, and each stored block has a 5 byte header: - */ - var max_block_size = 0xffff; - - if (max_block_size > s.pending_buf_size - 5) { - max_block_size = s.pending_buf_size - 5; - } - - /* Copy as much as possible from input to output: */ - for (;;) { - /* Fill the window as much as possible: */ - if (s.lookahead <= 1) { - - //Assert(s->strstart < s->w_size+MAX_DIST(s) || - // s->block_start >= (long)s->w_size, "slide too late"); -// if (!(s.strstart < s.w_size + (s.w_size - MIN_LOOKAHEAD) || -// s.block_start >= s.w_size)) { -// throw new Error("slide too late"); -// } - - fill_window(s); - if (s.lookahead === 0 && flush === Z_NO_FLUSH) { - return BS_NEED_MORE; - } - - if (s.lookahead === 0) { - break; - } - /* flush the current block */ - } - //Assert(s->block_start >= 0L, "block gone"); -// if (s.block_start < 0) throw new Error("block gone"); - - s.strstart += s.lookahead; - s.lookahead = 0; - - /* Emit a stored block if pending_buf will be full: */ - var max_start = s.block_start + max_block_size; - - if (s.strstart === 0 || s.strstart >= max_start) { - /* strstart == 0 is possible when wraparound on 16-bit machine */ - s.lookahead = s.strstart - max_start; - s.strstart = max_start; - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - - - } - /* Flush if we may have to slide, otherwise block_start may become - * negative and the data will be gone: - */ - if (s.strstart - s.block_start >= (s.w_size - MIN_LOOKAHEAD)) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - } - - s.insert = 0; - - if (flush === Z_FINISH) { - /*** FLUSH_BLOCK(s, 1); ***/ - flush_block_only(s, true); - if (s.strm.avail_out === 0) { - return BS_FINISH_STARTED; - } - /***/ - return BS_FINISH_DONE; - } - - if (s.strstart > s.block_start) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - - return BS_NEED_MORE; -} - -/* =========================================================================== - * Compress as much as possible from the input stream, return the current - * block state. - * This function does not perform lazy evaluation of matches and inserts - * new strings in the dictionary only for unmatched strings or for short - * matches. It is used only for the fast compression options. - */ -function deflate_fast(s, flush) { - var hash_head; /* head of the hash chain */ - var bflush; /* set if current block must be flushed */ - - for (;;) { - /* Make sure that we always have enough lookahead, except - * at the end of the input file. We need MAX_MATCH bytes - * for the next match, plus MIN_MATCH bytes to insert the - * string following the next match. - */ - if (s.lookahead < MIN_LOOKAHEAD) { - fill_window(s); - if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH) { - return BS_NEED_MORE; - } - if (s.lookahead === 0) { - break; /* flush the current block */ - } - } - - /* Insert the string window[strstart .. strstart+2] in the - * dictionary, and set hash_head to the head of the hash chain: - */ - hash_head = 0/*NIL*/; - if (s.lookahead >= MIN_MATCH) { - /*** INSERT_STRING(s, s.strstart, hash_head); ***/ - s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask; - hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h]; - s.head[s.ins_h] = s.strstart; - /***/ - } - - /* Find the longest match, discarding those <= prev_length. - * At this point we have always match_length < MIN_MATCH - */ - if (hash_head !== 0/*NIL*/ && ((s.strstart - hash_head) <= (s.w_size - MIN_LOOKAHEAD))) { - /* To simplify the code, we prevent matches with the string - * of window index 0 (in particular we have to avoid a match - * of the string with itself at the start of the input file). - */ - s.match_length = longest_match(s, hash_head); - /* longest_match() sets match_start */ - } - if (s.match_length >= MIN_MATCH) { - // check_match(s, s.strstart, s.match_start, s.match_length); // for debug only - - /*** _tr_tally_dist(s, s.strstart - s.match_start, - s.match_length - MIN_MATCH, bflush); ***/ - bflush = trees._tr_tally(s, s.strstart - s.match_start, s.match_length - MIN_MATCH); - - s.lookahead -= s.match_length; - - /* Insert new strings in the hash table only if the match length - * is not too large. This saves time but degrades compression. - */ - if (s.match_length <= s.max_lazy_match/*max_insert_length*/ && s.lookahead >= MIN_MATCH) { - s.match_length--; /* string at strstart already in table */ - do { - s.strstart++; - /*** INSERT_STRING(s, s.strstart, hash_head); ***/ - s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask; - hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h]; - s.head[s.ins_h] = s.strstart; - /***/ - /* strstart never exceeds WSIZE-MAX_MATCH, so there are - * always MIN_MATCH bytes ahead. - */ - } while (--s.match_length !== 0); - s.strstart++; - } else - { - s.strstart += s.match_length; - s.match_length = 0; - s.ins_h = s.window[s.strstart]; - /* UPDATE_HASH(s, s.ins_h, s.window[s.strstart+1]); */ - s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + 1]) & s.hash_mask; - -//#if MIN_MATCH != 3 -// Call UPDATE_HASH() MIN_MATCH-3 more times -//#endif - /* If lookahead < MIN_MATCH, ins_h is garbage, but it does not - * matter since it will be recomputed at next deflate call. - */ - } - } else { - /* No match, output a literal byte */ - //Tracevv((stderr,"%c", s.window[s.strstart])); - /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/ - bflush = trees._tr_tally(s, 0, s.window[s.strstart]); - - s.lookahead--; - s.strstart++; - } - if (bflush) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - } - s.insert = ((s.strstart < (MIN_MATCH - 1)) ? s.strstart : MIN_MATCH - 1); - if (flush === Z_FINISH) { - /*** FLUSH_BLOCK(s, 1); ***/ - flush_block_only(s, true); - if (s.strm.avail_out === 0) { - return BS_FINISH_STARTED; - } - /***/ - return BS_FINISH_DONE; - } - if (s.last_lit) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - return BS_BLOCK_DONE; -} - -/* =========================================================================== - * Same as above, but achieves better compression. We use a lazy - * evaluation for matches: a match is finally adopted only if there is - * no better match at the next window position. - */ -function deflate_slow(s, flush) { - var hash_head; /* head of hash chain */ - var bflush; /* set if current block must be flushed */ - - var max_insert; - - /* Process the input block. */ - for (;;) { - /* Make sure that we always have enough lookahead, except - * at the end of the input file. We need MAX_MATCH bytes - * for the next match, plus MIN_MATCH bytes to insert the - * string following the next match. - */ - if (s.lookahead < MIN_LOOKAHEAD) { - fill_window(s); - if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH) { - return BS_NEED_MORE; - } - if (s.lookahead === 0) { break; } /* flush the current block */ - } - - /* Insert the string window[strstart .. strstart+2] in the - * dictionary, and set hash_head to the head of the hash chain: - */ - hash_head = 0/*NIL*/; - if (s.lookahead >= MIN_MATCH) { - /*** INSERT_STRING(s, s.strstart, hash_head); ***/ - s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask; - hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h]; - s.head[s.ins_h] = s.strstart; - /***/ - } - - /* Find the longest match, discarding those <= prev_length. - */ - s.prev_length = s.match_length; - s.prev_match = s.match_start; - s.match_length = MIN_MATCH - 1; - - if (hash_head !== 0/*NIL*/ && s.prev_length < s.max_lazy_match && - s.strstart - hash_head <= (s.w_size - MIN_LOOKAHEAD)/*MAX_DIST(s)*/) { - /* To simplify the code, we prevent matches with the string - * of window index 0 (in particular we have to avoid a match - * of the string with itself at the start of the input file). - */ - s.match_length = longest_match(s, hash_head); - /* longest_match() sets match_start */ - - if (s.match_length <= 5 && - (s.strategy === Z_FILTERED || (s.match_length === MIN_MATCH && s.strstart - s.match_start > 4096/*TOO_FAR*/))) { - - /* If prev_match is also MIN_MATCH, match_start is garbage - * but we will ignore the current match anyway. - */ - s.match_length = MIN_MATCH - 1; - } - } - /* If there was a match at the previous step and the current - * match is not better, output the previous match: - */ - if (s.prev_length >= MIN_MATCH && s.match_length <= s.prev_length) { - max_insert = s.strstart + s.lookahead - MIN_MATCH; - /* Do not insert strings in hash table beyond this. */ - - //check_match(s, s.strstart-1, s.prev_match, s.prev_length); - - /***_tr_tally_dist(s, s.strstart - 1 - s.prev_match, - s.prev_length - MIN_MATCH, bflush);***/ - bflush = trees._tr_tally(s, s.strstart - 1 - s.prev_match, s.prev_length - MIN_MATCH); - /* Insert in hash table all strings up to the end of the match. - * strstart-1 and strstart are already inserted. If there is not - * enough lookahead, the last two strings are not inserted in - * the hash table. - */ - s.lookahead -= s.prev_length - 1; - s.prev_length -= 2; - do { - if (++s.strstart <= max_insert) { - /*** INSERT_STRING(s, s.strstart, hash_head); ***/ - s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask; - hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h]; - s.head[s.ins_h] = s.strstart; - /***/ - } - } while (--s.prev_length !== 0); - s.match_available = 0; - s.match_length = MIN_MATCH - 1; - s.strstart++; - - if (bflush) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - - } else if (s.match_available) { - /* If there was no match at the previous position, output a - * single literal. If there was a match but the current match - * is longer, truncate the previous match to a single literal. - */ - //Tracevv((stderr,"%c", s->window[s->strstart-1])); - /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/ - bflush = trees._tr_tally(s, 0, s.window[s.strstart - 1]); - - if (bflush) { - /*** FLUSH_BLOCK_ONLY(s, 0) ***/ - flush_block_only(s, false); - /***/ - } - s.strstart++; - s.lookahead--; - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - } else { - /* There is no previous match to compare with, wait for - * the next step to decide. - */ - s.match_available = 1; - s.strstart++; - s.lookahead--; - } - } - //Assert (flush != Z_NO_FLUSH, "no flush?"); - if (s.match_available) { - //Tracevv((stderr,"%c", s->window[s->strstart-1])); - /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/ - bflush = trees._tr_tally(s, 0, s.window[s.strstart - 1]); - - s.match_available = 0; - } - s.insert = s.strstart < MIN_MATCH - 1 ? s.strstart : MIN_MATCH - 1; - if (flush === Z_FINISH) { - /*** FLUSH_BLOCK(s, 1); ***/ - flush_block_only(s, true); - if (s.strm.avail_out === 0) { - return BS_FINISH_STARTED; - } - /***/ - return BS_FINISH_DONE; - } - if (s.last_lit) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - - return BS_BLOCK_DONE; -} - - -/* =========================================================================== - * For Z_RLE, simply look for runs of bytes, generate matches only of distance - * one. Do not maintain a hash table. (It will be regenerated if this run of - * deflate switches away from Z_RLE.) - */ -function deflate_rle(s, flush) { - var bflush; /* set if current block must be flushed */ - var prev; /* byte at distance one to match */ - var scan, strend; /* scan goes up to strend for length of run */ - - var _win = s.window; - - for (;;) { - /* Make sure that we always have enough lookahead, except - * at the end of the input file. We need MAX_MATCH bytes - * for the longest run, plus one for the unrolled loop. - */ - if (s.lookahead <= MAX_MATCH) { - fill_window(s); - if (s.lookahead <= MAX_MATCH && flush === Z_NO_FLUSH) { - return BS_NEED_MORE; - } - if (s.lookahead === 0) { break; } /* flush the current block */ - } - - /* See how many times the previous byte repeats */ - s.match_length = 0; - if (s.lookahead >= MIN_MATCH && s.strstart > 0) { - scan = s.strstart - 1; - prev = _win[scan]; - if (prev === _win[++scan] && prev === _win[++scan] && prev === _win[++scan]) { - strend = s.strstart + MAX_MATCH; - do { - /*jshint noempty:false*/ - } while (prev === _win[++scan] && prev === _win[++scan] && - prev === _win[++scan] && prev === _win[++scan] && - prev === _win[++scan] && prev === _win[++scan] && - prev === _win[++scan] && prev === _win[++scan] && - scan < strend); - s.match_length = MAX_MATCH - (strend - scan); - if (s.match_length > s.lookahead) { - s.match_length = s.lookahead; - } - } - //Assert(scan <= s->window+(uInt)(s->window_size-1), "wild scan"); - } - - /* Emit match if have run of MIN_MATCH or longer, else emit literal */ - if (s.match_length >= MIN_MATCH) { - //check_match(s, s.strstart, s.strstart - 1, s.match_length); - - /*** _tr_tally_dist(s, 1, s.match_length - MIN_MATCH, bflush); ***/ - bflush = trees._tr_tally(s, 1, s.match_length - MIN_MATCH); - - s.lookahead -= s.match_length; - s.strstart += s.match_length; - s.match_length = 0; - } else { - /* No match, output a literal byte */ - //Tracevv((stderr,"%c", s->window[s->strstart])); - /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/ - bflush = trees._tr_tally(s, 0, s.window[s.strstart]); - - s.lookahead--; - s.strstart++; - } - if (bflush) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - } - s.insert = 0; - if (flush === Z_FINISH) { - /*** FLUSH_BLOCK(s, 1); ***/ - flush_block_only(s, true); - if (s.strm.avail_out === 0) { - return BS_FINISH_STARTED; - } - /***/ - return BS_FINISH_DONE; - } - if (s.last_lit) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - return BS_BLOCK_DONE; -} - -/* =========================================================================== - * For Z_HUFFMAN_ONLY, do not look for matches. Do not maintain a hash table. - * (It will be regenerated if this run of deflate switches away from Huffman.) - */ -function deflate_huff(s, flush) { - var bflush; /* set if current block must be flushed */ - - for (;;) { - /* Make sure that we have a literal to write. */ - if (s.lookahead === 0) { - fill_window(s); - if (s.lookahead === 0) { - if (flush === Z_NO_FLUSH) { - return BS_NEED_MORE; - } - break; /* flush the current block */ - } - } - - /* Output a literal byte */ - s.match_length = 0; - //Tracevv((stderr,"%c", s->window[s->strstart])); - /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/ - bflush = trees._tr_tally(s, 0, s.window[s.strstart]); - s.lookahead--; - s.strstart++; - if (bflush) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - } - s.insert = 0; - if (flush === Z_FINISH) { - /*** FLUSH_BLOCK(s, 1); ***/ - flush_block_only(s, true); - if (s.strm.avail_out === 0) { - return BS_FINISH_STARTED; - } - /***/ - return BS_FINISH_DONE; - } - if (s.last_lit) { - /*** FLUSH_BLOCK(s, 0); ***/ - flush_block_only(s, false); - if (s.strm.avail_out === 0) { - return BS_NEED_MORE; - } - /***/ - } - return BS_BLOCK_DONE; -} - -/* Values for max_lazy_match, good_match and max_chain_length, depending on - * the desired pack level (0..9). The values given below have been tuned to - * exclude worst case performance for pathological files. Better values may be - * found for specific files. - */ -function Config(good_length, max_lazy, nice_length, max_chain, func) { - this.good_length = good_length; - this.max_lazy = max_lazy; - this.nice_length = nice_length; - this.max_chain = max_chain; - this.func = func; -} - -var configuration_table; - -configuration_table = [ - /* good lazy nice chain */ - new Config(0, 0, 0, 0, deflate_stored), /* 0 store only */ - new Config(4, 4, 8, 4, deflate_fast), /* 1 max speed, no lazy matches */ - new Config(4, 5, 16, 8, deflate_fast), /* 2 */ - new Config(4, 6, 32, 32, deflate_fast), /* 3 */ - - new Config(4, 4, 16, 16, deflate_slow), /* 4 lazy matches */ - new Config(8, 16, 32, 32, deflate_slow), /* 5 */ - new Config(8, 16, 128, 128, deflate_slow), /* 6 */ - new Config(8, 32, 128, 256, deflate_slow), /* 7 */ - new Config(32, 128, 258, 1024, deflate_slow), /* 8 */ - new Config(32, 258, 258, 4096, deflate_slow) /* 9 max compression */ -]; - - -/* =========================================================================== - * Initialize the "longest match" routines for a new zlib stream - */ -function lm_init(s) { - s.window_size = 2 * s.w_size; - - /*** CLEAR_HASH(s); ***/ - zero(s.head); // Fill with NIL (= 0); - - /* Set the default configuration parameters: - */ - s.max_lazy_match = configuration_table[s.level].max_lazy; - s.good_match = configuration_table[s.level].good_length; - s.nice_match = configuration_table[s.level].nice_length; - s.max_chain_length = configuration_table[s.level].max_chain; - - s.strstart = 0; - s.block_start = 0; - s.lookahead = 0; - s.insert = 0; - s.match_length = s.prev_length = MIN_MATCH - 1; - s.match_available = 0; - s.ins_h = 0; -} - - -function DeflateState() { - this.strm = null; /* pointer back to this zlib stream */ - this.status = 0; /* as the name implies */ - this.pending_buf = null; /* output still pending */ - this.pending_buf_size = 0; /* size of pending_buf */ - this.pending_out = 0; /* next pending byte to output to the stream */ - this.pending = 0; /* nb of bytes in the pending buffer */ - this.wrap = 0; /* bit 0 true for zlib, bit 1 true for gzip */ - this.gzhead = null; /* gzip header information to write */ - this.gzindex = 0; /* where in extra, name, or comment */ - this.method = Z_DEFLATED; /* can only be DEFLATED */ - this.last_flush = -1; /* value of flush param for previous deflate call */ - - this.w_size = 0; /* LZ77 window size (32K by default) */ - this.w_bits = 0; /* log2(w_size) (8..16) */ - this.w_mask = 0; /* w_size - 1 */ - - this.window = null; - /* Sliding window. Input bytes are read into the second half of the window, - * and move to the first half later to keep a dictionary of at least wSize - * bytes. With this organization, matches are limited to a distance of - * wSize-MAX_MATCH bytes, but this ensures that IO is always - * performed with a length multiple of the block size. - */ - - this.window_size = 0; - /* Actual size of window: 2*wSize, except when the user input buffer - * is directly used as sliding window. - */ - - this.prev = null; - /* Link to older string with same hash index. To limit the size of this - * array to 64K, this link is maintained only for the last 32K strings. - * An index in this array is thus a window index modulo 32K. - */ - - this.head = null; /* Heads of the hash chains or NIL. */ - - this.ins_h = 0; /* hash index of string to be inserted */ - this.hash_size = 0; /* number of elements in hash table */ - this.hash_bits = 0; /* log2(hash_size) */ - this.hash_mask = 0; /* hash_size-1 */ - - this.hash_shift = 0; - /* Number of bits by which ins_h must be shifted at each input - * step. It must be such that after MIN_MATCH steps, the oldest - * byte no longer takes part in the hash key, that is: - * hash_shift * MIN_MATCH >= hash_bits - */ - - this.block_start = 0; - /* Window position at the beginning of the current output block. Gets - * negative when the window is moved backwards. - */ - - this.match_length = 0; /* length of best match */ - this.prev_match = 0; /* previous match */ - this.match_available = 0; /* set if previous match exists */ - this.strstart = 0; /* start of string to insert */ - this.match_start = 0; /* start of matching string */ - this.lookahead = 0; /* number of valid bytes ahead in window */ - - this.prev_length = 0; - /* Length of the best match at previous step. Matches not greater than this - * are discarded. This is used in the lazy match evaluation. - */ - - this.max_chain_length = 0; - /* To speed up deflation, hash chains are never searched beyond this - * length. A higher limit improves compression ratio but degrades the - * speed. - */ - - this.max_lazy_match = 0; - /* Attempt to find a better match only when the current match is strictly - * smaller than this value. This mechanism is used only for compression - * levels >= 4. - */ - // That's alias to max_lazy_match, don't use directly - //this.max_insert_length = 0; - /* Insert new strings in the hash table only if the match length is not - * greater than this length. This saves time but degrades compression. - * max_insert_length is used only for compression levels <= 3. - */ - - this.level = 0; /* compression level (1..9) */ - this.strategy = 0; /* favor or force Huffman coding*/ - - this.good_match = 0; - /* Use a faster search when the previous match is longer than this */ - - this.nice_match = 0; /* Stop searching when current match exceeds this */ - - /* used by trees.c: */ - - /* Didn't use ct_data typedef below to suppress compiler warning */ - - // struct ct_data_s dyn_ltree[HEAP_SIZE]; /* literal and length tree */ - // struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */ - // struct ct_data_s bl_tree[2*BL_CODES+1]; /* Huffman tree for bit lengths */ - - // Use flat array of DOUBLE size, with interleaved fata, - // because JS does not support effective - this.dyn_ltree = new utils.Buf16(HEAP_SIZE * 2); - this.dyn_dtree = new utils.Buf16((2 * D_CODES + 1) * 2); - this.bl_tree = new utils.Buf16((2 * BL_CODES + 1) * 2); - zero(this.dyn_ltree); - zero(this.dyn_dtree); - zero(this.bl_tree); - - this.l_desc = null; /* desc. for literal tree */ - this.d_desc = null; /* desc. for distance tree */ - this.bl_desc = null; /* desc. for bit length tree */ - - //ush bl_count[MAX_BITS+1]; - this.bl_count = new utils.Buf16(MAX_BITS + 1); - /* number of codes at each bit length for an optimal tree */ - - //int heap[2*L_CODES+1]; /* heap used to build the Huffman trees */ - this.heap = new utils.Buf16(2 * L_CODES + 1); /* heap used to build the Huffman trees */ - zero(this.heap); - - this.heap_len = 0; /* number of elements in the heap */ - this.heap_max = 0; /* element of largest frequency */ - /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used. - * The same heap array is used to build all trees. - */ - - this.depth = new utils.Buf16(2 * L_CODES + 1); //uch depth[2*L_CODES+1]; - zero(this.depth); - /* Depth of each subtree used as tie breaker for trees of equal frequency - */ - - this.l_buf = 0; /* buffer index for literals or lengths */ - - this.lit_bufsize = 0; - /* Size of match buffer for literals/lengths. There are 4 reasons for - * limiting lit_bufsize to 64K: - * - frequencies can be kept in 16 bit counters - * - if compression is not successful for the first block, all input - * data is still in the window so we can still emit a stored block even - * when input comes from standard input. (This can also be done for - * all blocks if lit_bufsize is not greater than 32K.) - * - if compression is not successful for a file smaller than 64K, we can - * even emit a stored file instead of a stored block (saving 5 bytes). - * This is applicable only for zip (not gzip or zlib). - * - creating new Huffman trees less frequently may not provide fast - * adaptation to changes in the input data statistics. (Take for - * example a binary file with poorly compressible code followed by - * a highly compressible string table.) Smaller buffer sizes give - * fast adaptation but have of course the overhead of transmitting - * trees more frequently. - * - I can't count above 4 - */ - - this.last_lit = 0; /* running index in l_buf */ - - this.d_buf = 0; - /* Buffer index for distances. To simplify the code, d_buf and l_buf have - * the same number of elements. To use different lengths, an extra flag - * array would be necessary. - */ - - this.opt_len = 0; /* bit length of current block with optimal trees */ - this.static_len = 0; /* bit length of current block with static trees */ - this.matches = 0; /* number of string matches in current block */ - this.insert = 0; /* bytes at end of window left to insert */ - - - this.bi_buf = 0; - /* Output buffer. bits are inserted starting at the bottom (least - * significant bits). - */ - this.bi_valid = 0; - /* Number of valid bits in bi_buf. All bits above the last valid bit - * are always zero. - */ - - // Used for window memory init. We safely ignore it for JS. That makes - // sense only for pointers and memory check tools. - //this.high_water = 0; - /* High water mark offset in window for initialized bytes -- bytes above - * this are set to zero in order to avoid memory check warnings when - * longest match routines access bytes past the input. This is then - * updated to the new high water mark. - */ -} - - -function deflateResetKeep(strm) { - var s; - - if (!strm || !strm.state) { - return err(strm, Z_STREAM_ERROR); - } - - strm.total_in = strm.total_out = 0; - strm.data_type = Z_UNKNOWN; - - s = strm.state; - s.pending = 0; - s.pending_out = 0; - - if (s.wrap < 0) { - s.wrap = -s.wrap; - /* was made negative by deflate(..., Z_FINISH); */ - } - s.status = (s.wrap ? INIT_STATE : BUSY_STATE); - strm.adler = (s.wrap === 2) ? - 0 // crc32(0, Z_NULL, 0) - : - 1; // adler32(0, Z_NULL, 0) - s.last_flush = Z_NO_FLUSH; - trees._tr_init(s); - return Z_OK; -} - - -function deflateReset(strm) { - var ret = deflateResetKeep(strm); - if (ret === Z_OK) { - lm_init(strm.state); - } - return ret; -} - - -function deflateSetHeader(strm, head) { - if (!strm || !strm.state) { return Z_STREAM_ERROR; } - if (strm.state.wrap !== 2) { return Z_STREAM_ERROR; } - strm.state.gzhead = head; - return Z_OK; -} - - -function deflateInit2(strm, level, method, windowBits, memLevel, strategy) { - if (!strm) { // === Z_NULL - return Z_STREAM_ERROR; - } - var wrap = 1; - - if (level === Z_DEFAULT_COMPRESSION) { - level = 6; - } - - if (windowBits < 0) { /* suppress zlib wrapper */ - wrap = 0; - windowBits = -windowBits; - } - - else if (windowBits > 15) { - wrap = 2; /* write gzip wrapper instead */ - windowBits -= 16; - } - - - if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || method !== Z_DEFLATED || - windowBits < 8 || windowBits > 15 || level < 0 || level > 9 || - strategy < 0 || strategy > Z_FIXED) { - return err(strm, Z_STREAM_ERROR); - } - - - if (windowBits === 8) { - windowBits = 9; - } - /* until 256-byte window bug fixed */ - - var s = new DeflateState(); - - strm.state = s; - s.strm = strm; - - s.wrap = wrap; - s.gzhead = null; - s.w_bits = windowBits; - s.w_size = 1 << s.w_bits; - s.w_mask = s.w_size - 1; - - s.hash_bits = memLevel + 7; - s.hash_size = 1 << s.hash_bits; - s.hash_mask = s.hash_size - 1; - s.hash_shift = ~~((s.hash_bits + MIN_MATCH - 1) / MIN_MATCH); - - s.window = new utils.Buf8(s.w_size * 2); - s.head = new utils.Buf16(s.hash_size); - s.prev = new utils.Buf16(s.w_size); - - // Don't need mem init magic for JS. - //s.high_water = 0; /* nothing written to s->window yet */ - - s.lit_bufsize = 1 << (memLevel + 6); /* 16K elements by default */ - - s.pending_buf_size = s.lit_bufsize * 4; - - //overlay = (ushf *) ZALLOC(strm, s->lit_bufsize, sizeof(ush)+2); - //s->pending_buf = (uchf *) overlay; - s.pending_buf = new utils.Buf8(s.pending_buf_size); - - // It is offset from `s.pending_buf` (size is `s.lit_bufsize * 2`) - //s->d_buf = overlay + s->lit_bufsize/sizeof(ush); - s.d_buf = 1 * s.lit_bufsize; - - //s->l_buf = s->pending_buf + (1+sizeof(ush))*s->lit_bufsize; - s.l_buf = (1 + 2) * s.lit_bufsize; - - s.level = level; - s.strategy = strategy; - s.method = method; - - return deflateReset(strm); -} - -function deflateInit(strm, level) { - return deflateInit2(strm, level, Z_DEFLATED, MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY); -} - - -function deflate(strm, flush) { - var old_flush, s; - var beg, val; // for gzip header write only - - if (!strm || !strm.state || - flush > Z_BLOCK || flush < 0) { - return strm ? err(strm, Z_STREAM_ERROR) : Z_STREAM_ERROR; - } - - s = strm.state; - - if (!strm.output || - (!strm.input && strm.avail_in !== 0) || - (s.status === FINISH_STATE && flush !== Z_FINISH)) { - return err(strm, (strm.avail_out === 0) ? Z_BUF_ERROR : Z_STREAM_ERROR); - } - - s.strm = strm; /* just in case */ - old_flush = s.last_flush; - s.last_flush = flush; - - /* Write the header */ - if (s.status === INIT_STATE) { - - if (s.wrap === 2) { // GZIP header - strm.adler = 0; //crc32(0L, Z_NULL, 0); - put_byte(s, 31); - put_byte(s, 139); - put_byte(s, 8); - if (!s.gzhead) { // s->gzhead == Z_NULL - put_byte(s, 0); - put_byte(s, 0); - put_byte(s, 0); - put_byte(s, 0); - put_byte(s, 0); - put_byte(s, s.level === 9 ? 2 : - (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ? - 4 : 0)); - put_byte(s, OS_CODE); - s.status = BUSY_STATE; - } - else { - put_byte(s, (s.gzhead.text ? 1 : 0) + - (s.gzhead.hcrc ? 2 : 0) + - (!s.gzhead.extra ? 0 : 4) + - (!s.gzhead.name ? 0 : 8) + - (!s.gzhead.comment ? 0 : 16) - ); - put_byte(s, s.gzhead.time & 0xff); - put_byte(s, (s.gzhead.time >> 8) & 0xff); - put_byte(s, (s.gzhead.time >> 16) & 0xff); - put_byte(s, (s.gzhead.time >> 24) & 0xff); - put_byte(s, s.level === 9 ? 2 : - (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ? - 4 : 0)); - put_byte(s, s.gzhead.os & 0xff); - if (s.gzhead.extra && s.gzhead.extra.length) { - put_byte(s, s.gzhead.extra.length & 0xff); - put_byte(s, (s.gzhead.extra.length >> 8) & 0xff); - } - if (s.gzhead.hcrc) { - strm.adler = crc32(strm.adler, s.pending_buf, s.pending, 0); - } - s.gzindex = 0; - s.status = EXTRA_STATE; - } - } - else // DEFLATE header - { - var header = (Z_DEFLATED + ((s.w_bits - 8) << 4)) << 8; - var level_flags = -1; - - if (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2) { - level_flags = 0; - } else if (s.level < 6) { - level_flags = 1; - } else if (s.level === 6) { - level_flags = 2; - } else { - level_flags = 3; - } - header |= (level_flags << 6); - if (s.strstart !== 0) { header |= PRESET_DICT; } - header += 31 - (header % 31); - - s.status = BUSY_STATE; - putShortMSB(s, header); - - /* Save the adler32 of the preset dictionary: */ - if (s.strstart !== 0) { - putShortMSB(s, strm.adler >>> 16); - putShortMSB(s, strm.adler & 0xffff); - } - strm.adler = 1; // adler32(0L, Z_NULL, 0); - } - } - -//#ifdef GZIP - if (s.status === EXTRA_STATE) { - if (s.gzhead.extra/* != Z_NULL*/) { - beg = s.pending; /* start of bytes to update crc */ - - while (s.gzindex < (s.gzhead.extra.length & 0xffff)) { - if (s.pending === s.pending_buf_size) { - if (s.gzhead.hcrc && s.pending > beg) { - strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg); - } - flush_pending(strm); - beg = s.pending; - if (s.pending === s.pending_buf_size) { - break; - } - } - put_byte(s, s.gzhead.extra[s.gzindex] & 0xff); - s.gzindex++; - } - if (s.gzhead.hcrc && s.pending > beg) { - strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg); - } - if (s.gzindex === s.gzhead.extra.length) { - s.gzindex = 0; - s.status = NAME_STATE; - } - } - else { - s.status = NAME_STATE; - } - } - if (s.status === NAME_STATE) { - if (s.gzhead.name/* != Z_NULL*/) { - beg = s.pending; /* start of bytes to update crc */ - //int val; - - do { - if (s.pending === s.pending_buf_size) { - if (s.gzhead.hcrc && s.pending > beg) { - strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg); - } - flush_pending(strm); - beg = s.pending; - if (s.pending === s.pending_buf_size) { - val = 1; - break; - } - } - // JS specific: little magic to add zero terminator to end of string - if (s.gzindex < s.gzhead.name.length) { - val = s.gzhead.name.charCodeAt(s.gzindex++) & 0xff; - } else { - val = 0; - } - put_byte(s, val); - } while (val !== 0); - - if (s.gzhead.hcrc && s.pending > beg) { - strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg); - } - if (val === 0) { - s.gzindex = 0; - s.status = COMMENT_STATE; - } - } - else { - s.status = COMMENT_STATE; - } - } - if (s.status === COMMENT_STATE) { - if (s.gzhead.comment/* != Z_NULL*/) { - beg = s.pending; /* start of bytes to update crc */ - //int val; - - do { - if (s.pending === s.pending_buf_size) { - if (s.gzhead.hcrc && s.pending > beg) { - strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg); - } - flush_pending(strm); - beg = s.pending; - if (s.pending === s.pending_buf_size) { - val = 1; - break; - } - } - // JS specific: little magic to add zero terminator to end of string - if (s.gzindex < s.gzhead.comment.length) { - val = s.gzhead.comment.charCodeAt(s.gzindex++) & 0xff; - } else { - val = 0; - } - put_byte(s, val); - } while (val !== 0); - - if (s.gzhead.hcrc && s.pending > beg) { - strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg); - } - if (val === 0) { - s.status = HCRC_STATE; - } - } - else { - s.status = HCRC_STATE; - } - } - if (s.status === HCRC_STATE) { - if (s.gzhead.hcrc) { - if (s.pending + 2 > s.pending_buf_size) { - flush_pending(strm); - } - if (s.pending + 2 <= s.pending_buf_size) { - put_byte(s, strm.adler & 0xff); - put_byte(s, (strm.adler >> 8) & 0xff); - strm.adler = 0; //crc32(0L, Z_NULL, 0); - s.status = BUSY_STATE; - } - } - else { - s.status = BUSY_STATE; - } - } -//#endif - - /* Flush as much pending output as possible */ - if (s.pending !== 0) { - flush_pending(strm); - if (strm.avail_out === 0) { - /* Since avail_out is 0, deflate will be called again with - * more output space, but possibly with both pending and - * avail_in equal to zero. There won't be anything to do, - * but this is not an error situation so make sure we - * return OK instead of BUF_ERROR at next call of deflate: - */ - s.last_flush = -1; - return Z_OK; - } - - /* Make sure there is something to do and avoid duplicate consecutive - * flushes. For repeated and useless calls with Z_FINISH, we keep - * returning Z_STREAM_END instead of Z_BUF_ERROR. - */ - } else if (strm.avail_in === 0 && rank(flush) <= rank(old_flush) && - flush !== Z_FINISH) { - return err(strm, Z_BUF_ERROR); - } - - /* User must not provide more input after the first FINISH: */ - if (s.status === FINISH_STATE && strm.avail_in !== 0) { - return err(strm, Z_BUF_ERROR); - } - - /* Start a new block or continue the current one. - */ - if (strm.avail_in !== 0 || s.lookahead !== 0 || - (flush !== Z_NO_FLUSH && s.status !== FINISH_STATE)) { - var bstate = (s.strategy === Z_HUFFMAN_ONLY) ? deflate_huff(s, flush) : - (s.strategy === Z_RLE ? deflate_rle(s, flush) : - configuration_table[s.level].func(s, flush)); - - if (bstate === BS_FINISH_STARTED || bstate === BS_FINISH_DONE) { - s.status = FINISH_STATE; - } - if (bstate === BS_NEED_MORE || bstate === BS_FINISH_STARTED) { - if (strm.avail_out === 0) { - s.last_flush = -1; - /* avoid BUF_ERROR next call, see above */ - } - return Z_OK; - /* If flush != Z_NO_FLUSH && avail_out == 0, the next call - * of deflate should use the same flush parameter to make sure - * that the flush is complete. So we don't have to output an - * empty block here, this will be done at next call. This also - * ensures that for a very small output buffer, we emit at most - * one empty block. - */ - } - if (bstate === BS_BLOCK_DONE) { - if (flush === Z_PARTIAL_FLUSH) { - trees._tr_align(s); - } - else if (flush !== Z_BLOCK) { /* FULL_FLUSH or SYNC_FLUSH */ - - trees._tr_stored_block(s, 0, 0, false); - /* For a full flush, this empty block will be recognized - * as a special marker by inflate_sync(). - */ - if (flush === Z_FULL_FLUSH) { - /*** CLEAR_HASH(s); ***/ /* forget history */ - zero(s.head); // Fill with NIL (= 0); - - if (s.lookahead === 0) { - s.strstart = 0; - s.block_start = 0; - s.insert = 0; - } - } - } - flush_pending(strm); - if (strm.avail_out === 0) { - s.last_flush = -1; /* avoid BUF_ERROR at next call, see above */ - return Z_OK; - } - } - } - //Assert(strm->avail_out > 0, "bug2"); - //if (strm.avail_out <= 0) { throw new Error("bug2");} - - if (flush !== Z_FINISH) { return Z_OK; } - if (s.wrap <= 0) { return Z_STREAM_END; } - - /* Write the trailer */ - if (s.wrap === 2) { - put_byte(s, strm.adler & 0xff); - put_byte(s, (strm.adler >> 8) & 0xff); - put_byte(s, (strm.adler >> 16) & 0xff); - put_byte(s, (strm.adler >> 24) & 0xff); - put_byte(s, strm.total_in & 0xff); - put_byte(s, (strm.total_in >> 8) & 0xff); - put_byte(s, (strm.total_in >> 16) & 0xff); - put_byte(s, (strm.total_in >> 24) & 0xff); - } - else - { - putShortMSB(s, strm.adler >>> 16); - putShortMSB(s, strm.adler & 0xffff); - } - - flush_pending(strm); - /* If avail_out is zero, the application will call deflate again - * to flush the rest. - */ - if (s.wrap > 0) { s.wrap = -s.wrap; } - /* write the trailer only once! */ - return s.pending !== 0 ? Z_OK : Z_STREAM_END; -} - -function deflateEnd(strm) { - var status; - - if (!strm/*== Z_NULL*/ || !strm.state/*== Z_NULL*/) { - return Z_STREAM_ERROR; - } - - status = strm.state.status; - if (status !== INIT_STATE && - status !== EXTRA_STATE && - status !== NAME_STATE && - status !== COMMENT_STATE && - status !== HCRC_STATE && - status !== BUSY_STATE && - status !== FINISH_STATE - ) { - return err(strm, Z_STREAM_ERROR); - } - - strm.state = null; - - return status === BUSY_STATE ? err(strm, Z_DATA_ERROR) : Z_OK; -} - - -/* ========================================================================= - * Initializes the compression dictionary from the given byte - * sequence without producing any compressed output. - */ -function deflateSetDictionary(strm, dictionary) { - var dictLength = dictionary.length; - - var s; - var str, n; - var wrap; - var avail; - var next; - var input; - var tmpDict; - - if (!strm/*== Z_NULL*/ || !strm.state/*== Z_NULL*/) { - return Z_STREAM_ERROR; - } - - s = strm.state; - wrap = s.wrap; - - if (wrap === 2 || (wrap === 1 && s.status !== INIT_STATE) || s.lookahead) { - return Z_STREAM_ERROR; - } - - /* when using zlib wrappers, compute Adler-32 for provided dictionary */ - if (wrap === 1) { - /* adler32(strm->adler, dictionary, dictLength); */ - strm.adler = adler32(strm.adler, dictionary, dictLength, 0); - } - - s.wrap = 0; /* avoid computing Adler-32 in read_buf */ - - /* if dictionary would fill window, just replace the history */ - if (dictLength >= s.w_size) { - if (wrap === 0) { /* already empty otherwise */ - /*** CLEAR_HASH(s); ***/ - zero(s.head); // Fill with NIL (= 0); - s.strstart = 0; - s.block_start = 0; - s.insert = 0; - } - /* use the tail */ - // dictionary = dictionary.slice(dictLength - s.w_size); - tmpDict = new utils.Buf8(s.w_size); - utils.arraySet(tmpDict, dictionary, dictLength - s.w_size, s.w_size, 0); - dictionary = tmpDict; - dictLength = s.w_size; - } - /* insert dictionary into window and hash */ - avail = strm.avail_in; - next = strm.next_in; - input = strm.input; - strm.avail_in = dictLength; - strm.next_in = 0; - strm.input = dictionary; - fill_window(s); - while (s.lookahead >= MIN_MATCH) { - str = s.strstart; - n = s.lookahead - (MIN_MATCH - 1); - do { - /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */ - s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + MIN_MATCH - 1]) & s.hash_mask; - - s.prev[str & s.w_mask] = s.head[s.ins_h]; - - s.head[s.ins_h] = str; - str++; - } while (--n); - s.strstart = str; - s.lookahead = MIN_MATCH - 1; - fill_window(s); - } - s.strstart += s.lookahead; - s.block_start = s.strstart; - s.insert = s.lookahead; - s.lookahead = 0; - s.match_length = s.prev_length = MIN_MATCH - 1; - s.match_available = 0; - strm.next_in = next; - strm.input = input; - strm.avail_in = avail; - s.wrap = wrap; - return Z_OK; -} - - -exports.deflateInit = deflateInit; -exports.deflateInit2 = deflateInit2; -exports.deflateReset = deflateReset; -exports.deflateResetKeep = deflateResetKeep; -exports.deflateSetHeader = deflateSetHeader; -exports.deflate = deflate; -exports.deflateEnd = deflateEnd; -exports.deflateSetDictionary = deflateSetDictionary; -exports.deflateInfo = 'pako deflate (from Nodeca project)'; - -/* Not implemented -exports.deflateBound = deflateBound; -exports.deflateCopy = deflateCopy; -exports.deflateParams = deflateParams; -exports.deflatePending = deflatePending; -exports.deflatePrime = deflatePrime; -exports.deflateTune = deflateTune; -*/ - -},{"../utils/common":1,"./adler32":3,"./crc32":4,"./messages":6,"./trees":7}],6:[function(require,module,exports){ -'use strict'; - -// (C) 1995-2013 Jean-loup Gailly and Mark Adler -// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would be -// appreciated but is not required. -// 2. Altered source versions must be plainly marked as such, and must not be -// misrepresented as being the original software. -// 3. This notice may not be removed or altered from any source distribution. - -module.exports = { - 2: 'need dictionary', /* Z_NEED_DICT 2 */ - 1: 'stream end', /* Z_STREAM_END 1 */ - 0: '', /* Z_OK 0 */ - '-1': 'file error', /* Z_ERRNO (-1) */ - '-2': 'stream error', /* Z_STREAM_ERROR (-2) */ - '-3': 'data error', /* Z_DATA_ERROR (-3) */ - '-4': 'insufficient memory', /* Z_MEM_ERROR (-4) */ - '-5': 'buffer error', /* Z_BUF_ERROR (-5) */ - '-6': 'incompatible version' /* Z_VERSION_ERROR (-6) */ -}; - -},{}],7:[function(require,module,exports){ -'use strict'; - -// (C) 1995-2013 Jean-loup Gailly and Mark Adler -// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would be -// appreciated but is not required. -// 2. Altered source versions must be plainly marked as such, and must not be -// misrepresented as being the original software. -// 3. This notice may not be removed or altered from any source distribution. - -/* eslint-disable space-unary-ops */ - -var utils = require('../utils/common'); - -/* Public constants ==========================================================*/ -/* ===========================================================================*/ - - -//var Z_FILTERED = 1; -//var Z_HUFFMAN_ONLY = 2; -//var Z_RLE = 3; -var Z_FIXED = 4; -//var Z_DEFAULT_STRATEGY = 0; - -/* Possible values of the data_type field (though see inflate()) */ -var Z_BINARY = 0; -var Z_TEXT = 1; -//var Z_ASCII = 1; // = Z_TEXT -var Z_UNKNOWN = 2; - -/*============================================================================*/ - - -function zero(buf) { var len = buf.length; while (--len >= 0) { buf[len] = 0; } } - -// From zutil.h - -var STORED_BLOCK = 0; -var STATIC_TREES = 1; -var DYN_TREES = 2; -/* The three kinds of block type */ - -var MIN_MATCH = 3; -var MAX_MATCH = 258; -/* The minimum and maximum match lengths */ - -// From deflate.h -/* =========================================================================== - * Internal compression state. - */ - -var LENGTH_CODES = 29; -/* number of length codes, not counting the special END_BLOCK code */ - -var LITERALS = 256; -/* number of literal bytes 0..255 */ - -var L_CODES = LITERALS + 1 + LENGTH_CODES; -/* number of Literal or Length codes, including the END_BLOCK code */ - -var D_CODES = 30; -/* number of distance codes */ - -var BL_CODES = 19; -/* number of codes used to transfer the bit lengths */ - -var HEAP_SIZE = 2 * L_CODES + 1; -/* maximum heap size */ - -var MAX_BITS = 15; -/* All codes must not exceed MAX_BITS bits */ - -var Buf_size = 16; -/* size of bit buffer in bi_buf */ - - -/* =========================================================================== - * Constants - */ - -var MAX_BL_BITS = 7; -/* Bit length codes must not exceed MAX_BL_BITS bits */ - -var END_BLOCK = 256; -/* end of block literal code */ - -var REP_3_6 = 16; -/* repeat previous bit length 3-6 times (2 bits of repeat count) */ - -var REPZ_3_10 = 17; -/* repeat a zero length 3-10 times (3 bits of repeat count) */ - -var REPZ_11_138 = 18; -/* repeat a zero length 11-138 times (7 bits of repeat count) */ - -/* eslint-disable comma-spacing,array-bracket-spacing */ -var extra_lbits = /* extra bits for each length code */ - [0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0]; - -var extra_dbits = /* extra bits for each distance code */ - [0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13]; - -var extra_blbits = /* extra bits for each bit length code */ - [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7]; - -var bl_order = - [16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15]; -/* eslint-enable comma-spacing,array-bracket-spacing */ - -/* The lengths of the bit length codes are sent in order of decreasing - * probability, to avoid transmitting the lengths for unused bit length codes. - */ - -/* =========================================================================== - * Local data. These are initialized only once. - */ - -// We pre-fill arrays with 0 to avoid uninitialized gaps - -var DIST_CODE_LEN = 512; /* see definition of array dist_code below */ - -// !!!! Use flat array instead of structure, Freq = i*2, Len = i*2+1 -var static_ltree = new Array((L_CODES + 2) * 2); -zero(static_ltree); -/* The static literal tree. Since the bit lengths are imposed, there is no - * need for the L_CODES extra codes used during heap construction. However - * The codes 286 and 287 are needed to build a canonical tree (see _tr_init - * below). - */ - -var static_dtree = new Array(D_CODES * 2); -zero(static_dtree); -/* The static distance tree. (Actually a trivial tree since all codes use - * 5 bits.) - */ - -var _dist_code = new Array(DIST_CODE_LEN); -zero(_dist_code); -/* Distance codes. The first 256 values correspond to the distances - * 3 .. 258, the last 256 values correspond to the top 8 bits of - * the 15 bit distances. - */ - -var _length_code = new Array(MAX_MATCH - MIN_MATCH + 1); -zero(_length_code); -/* length code for each normalized match length (0 == MIN_MATCH) */ - -var base_length = new Array(LENGTH_CODES); -zero(base_length); -/* First normalized length for each code (0 = MIN_MATCH) */ - -var base_dist = new Array(D_CODES); -zero(base_dist); -/* First normalized distance for each code (0 = distance of 1) */ - - -function StaticTreeDesc(static_tree, extra_bits, extra_base, elems, max_length) { - - this.static_tree = static_tree; /* static tree or NULL */ - this.extra_bits = extra_bits; /* extra bits for each code or NULL */ - this.extra_base = extra_base; /* base index for extra_bits */ - this.elems = elems; /* max number of elements in the tree */ - this.max_length = max_length; /* max bit length for the codes */ - - // show if `static_tree` has data or dummy - needed for monomorphic objects - this.has_stree = static_tree && static_tree.length; -} - - -var static_l_desc; -var static_d_desc; -var static_bl_desc; - - -function TreeDesc(dyn_tree, stat_desc) { - this.dyn_tree = dyn_tree; /* the dynamic tree */ - this.max_code = 0; /* largest code with non zero frequency */ - this.stat_desc = stat_desc; /* the corresponding static tree */ -} - - - -function d_code(dist) { - return dist < 256 ? _dist_code[dist] : _dist_code[256 + (dist >>> 7)]; -} - - -/* =========================================================================== - * Output a short LSB first on the stream. - * IN assertion: there is enough room in pendingBuf. - */ -function put_short(s, w) { -// put_byte(s, (uch)((w) & 0xff)); -// put_byte(s, (uch)((ush)(w) >> 8)); - s.pending_buf[s.pending++] = (w) & 0xff; - s.pending_buf[s.pending++] = (w >>> 8) & 0xff; -} - - -/* =========================================================================== - * Send a value on a given number of bits. - * IN assertion: length <= 16 and value fits in length bits. - */ -function send_bits(s, value, length) { - if (s.bi_valid > (Buf_size - length)) { - s.bi_buf |= (value << s.bi_valid) & 0xffff; - put_short(s, s.bi_buf); - s.bi_buf = value >> (Buf_size - s.bi_valid); - s.bi_valid += length - Buf_size; - } else { - s.bi_buf |= (value << s.bi_valid) & 0xffff; - s.bi_valid += length; - } -} - - -function send_code(s, c, tree) { - send_bits(s, tree[c * 2]/*.Code*/, tree[c * 2 + 1]/*.Len*/); -} - - -/* =========================================================================== - * Reverse the first len bits of a code, using straightforward code (a faster - * method would use a table) - * IN assertion: 1 <= len <= 15 - */ -function bi_reverse(code, len) { - var res = 0; - do { - res |= code & 1; - code >>>= 1; - res <<= 1; - } while (--len > 0); - return res >>> 1; -} - - -/* =========================================================================== - * Flush the bit buffer, keeping at most 7 bits in it. - */ -function bi_flush(s) { - if (s.bi_valid === 16) { - put_short(s, s.bi_buf); - s.bi_buf = 0; - s.bi_valid = 0; - - } else if (s.bi_valid >= 8) { - s.pending_buf[s.pending++] = s.bi_buf & 0xff; - s.bi_buf >>= 8; - s.bi_valid -= 8; - } -} - - -/* =========================================================================== - * Compute the optimal bit lengths for a tree and update the total bit length - * for the current block. - * IN assertion: the fields freq and dad are set, heap[heap_max] and - * above are the tree nodes sorted by increasing frequency. - * OUT assertions: the field len is set to the optimal bit length, the - * array bl_count contains the frequencies for each bit length. - * The length opt_len is updated; static_len is also updated if stree is - * not null. - */ -function gen_bitlen(s, desc) -// deflate_state *s; -// tree_desc *desc; /* the tree descriptor */ -{ - var tree = desc.dyn_tree; - var max_code = desc.max_code; - var stree = desc.stat_desc.static_tree; - var has_stree = desc.stat_desc.has_stree; - var extra = desc.stat_desc.extra_bits; - var base = desc.stat_desc.extra_base; - var max_length = desc.stat_desc.max_length; - var h; /* heap index */ - var n, m; /* iterate over the tree elements */ - var bits; /* bit length */ - var xbits; /* extra bits */ - var f; /* frequency */ - var overflow = 0; /* number of elements with bit length too large */ - - for (bits = 0; bits <= MAX_BITS; bits++) { - s.bl_count[bits] = 0; - } - - /* In a first pass, compute the optimal bit lengths (which may - * overflow in the case of the bit length tree). - */ - tree[s.heap[s.heap_max] * 2 + 1]/*.Len*/ = 0; /* root of the heap */ - - for (h = s.heap_max + 1; h < HEAP_SIZE; h++) { - n = s.heap[h]; - bits = tree[tree[n * 2 + 1]/*.Dad*/ * 2 + 1]/*.Len*/ + 1; - if (bits > max_length) { - bits = max_length; - overflow++; - } - tree[n * 2 + 1]/*.Len*/ = bits; - /* We overwrite tree[n].Dad which is no longer needed */ - - if (n > max_code) { continue; } /* not a leaf node */ - - s.bl_count[bits]++; - xbits = 0; - if (n >= base) { - xbits = extra[n - base]; - } - f = tree[n * 2]/*.Freq*/; - s.opt_len += f * (bits + xbits); - if (has_stree) { - s.static_len += f * (stree[n * 2 + 1]/*.Len*/ + xbits); - } - } - if (overflow === 0) { return; } - - // Trace((stderr,"\nbit length overflow\n")); - /* This happens for example on obj2 and pic of the Calgary corpus */ - - /* Find the first bit length which could increase: */ - do { - bits = max_length - 1; - while (s.bl_count[bits] === 0) { bits--; } - s.bl_count[bits]--; /* move one leaf down the tree */ - s.bl_count[bits + 1] += 2; /* move one overflow item as its brother */ - s.bl_count[max_length]--; - /* The brother of the overflow item also moves one step up, - * but this does not affect bl_count[max_length] - */ - overflow -= 2; - } while (overflow > 0); - - /* Now recompute all bit lengths, scanning in increasing frequency. - * h is still equal to HEAP_SIZE. (It is simpler to reconstruct all - * lengths instead of fixing only the wrong ones. This idea is taken - * from 'ar' written by Haruhiko Okumura.) - */ - for (bits = max_length; bits !== 0; bits--) { - n = s.bl_count[bits]; - while (n !== 0) { - m = s.heap[--h]; - if (m > max_code) { continue; } - if (tree[m * 2 + 1]/*.Len*/ !== bits) { - // Trace((stderr,"code %d bits %d->%d\n", m, tree[m].Len, bits)); - s.opt_len += (bits - tree[m * 2 + 1]/*.Len*/) * tree[m * 2]/*.Freq*/; - tree[m * 2 + 1]/*.Len*/ = bits; - } - n--; - } - } -} - - -/* =========================================================================== - * Generate the codes for a given tree and bit counts (which need not be - * optimal). - * IN assertion: the array bl_count contains the bit length statistics for - * the given tree and the field len is set for all tree elements. - * OUT assertion: the field code is set for all tree elements of non - * zero code length. - */ -function gen_codes(tree, max_code, bl_count) -// ct_data *tree; /* the tree to decorate */ -// int max_code; /* largest code with non zero frequency */ -// ushf *bl_count; /* number of codes at each bit length */ -{ - var next_code = new Array(MAX_BITS + 1); /* next code value for each bit length */ - var code = 0; /* running code value */ - var bits; /* bit index */ - var n; /* code index */ - - /* The distribution counts are first used to generate the code values - * without bit reversal. - */ - for (bits = 1; bits <= MAX_BITS; bits++) { - next_code[bits] = code = (code + bl_count[bits - 1]) << 1; - } - /* Check that the bit counts in bl_count are consistent. The last code - * must be all ones. - */ - //Assert (code + bl_count[MAX_BITS]-1 == (1<<MAX_BITS)-1, - // "inconsistent bit counts"); - //Tracev((stderr,"\ngen_codes: max_code %d ", max_code)); - - for (n = 0; n <= max_code; n++) { - var len = tree[n * 2 + 1]/*.Len*/; - if (len === 0) { continue; } - /* Now reverse the bits */ - tree[n * 2]/*.Code*/ = bi_reverse(next_code[len]++, len); - - //Tracecv(tree != static_ltree, (stderr,"\nn %3d %c l %2d c %4x (%x) ", - // n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len]-1)); - } -} - - -/* =========================================================================== - * Initialize the various 'constant' tables. - */ -function tr_static_init() { - var n; /* iterates over tree elements */ - var bits; /* bit counter */ - var length; /* length value */ - var code; /* code value */ - var dist; /* distance index */ - var bl_count = new Array(MAX_BITS + 1); - /* number of codes at each bit length for an optimal tree */ - - // do check in _tr_init() - //if (static_init_done) return; - - /* For some embedded targets, global variables are not initialized: */ -/*#ifdef NO_INIT_GLOBAL_POINTERS - static_l_desc.static_tree = static_ltree; - static_l_desc.extra_bits = extra_lbits; - static_d_desc.static_tree = static_dtree; - static_d_desc.extra_bits = extra_dbits; - static_bl_desc.extra_bits = extra_blbits; -#endif*/ - - /* Initialize the mapping length (0..255) -> length code (0..28) */ - length = 0; - for (code = 0; code < LENGTH_CODES - 1; code++) { - base_length[code] = length; - for (n = 0; n < (1 << extra_lbits[code]); n++) { - _length_code[length++] = code; - } - } - //Assert (length == 256, "tr_static_init: length != 256"); - /* Note that the length 255 (match length 258) can be represented - * in two different ways: code 284 + 5 bits or code 285, so we - * overwrite length_code[255] to use the best encoding: - */ - _length_code[length - 1] = code; - - /* Initialize the mapping dist (0..32K) -> dist code (0..29) */ - dist = 0; - for (code = 0; code < 16; code++) { - base_dist[code] = dist; - for (n = 0; n < (1 << extra_dbits[code]); n++) { - _dist_code[dist++] = code; - } - } - //Assert (dist == 256, "tr_static_init: dist != 256"); - dist >>= 7; /* from now on, all distances are divided by 128 */ - for (; code < D_CODES; code++) { - base_dist[code] = dist << 7; - for (n = 0; n < (1 << (extra_dbits[code] - 7)); n++) { - _dist_code[256 + dist++] = code; - } - } - //Assert (dist == 256, "tr_static_init: 256+dist != 512"); - - /* Construct the codes of the static literal tree */ - for (bits = 0; bits <= MAX_BITS; bits++) { - bl_count[bits] = 0; - } - - n = 0; - while (n <= 143) { - static_ltree[n * 2 + 1]/*.Len*/ = 8; - n++; - bl_count[8]++; - } - while (n <= 255) { - static_ltree[n * 2 + 1]/*.Len*/ = 9; - n++; - bl_count[9]++; - } - while (n <= 279) { - static_ltree[n * 2 + 1]/*.Len*/ = 7; - n++; - bl_count[7]++; - } - while (n <= 287) { - static_ltree[n * 2 + 1]/*.Len*/ = 8; - n++; - bl_count[8]++; - } - /* Codes 286 and 287 do not exist, but we must include them in the - * tree construction to get a canonical Huffman tree (longest code - * all ones) - */ - gen_codes(static_ltree, L_CODES + 1, bl_count); - - /* The static distance tree is trivial: */ - for (n = 0; n < D_CODES; n++) { - static_dtree[n * 2 + 1]/*.Len*/ = 5; - static_dtree[n * 2]/*.Code*/ = bi_reverse(n, 5); - } - - // Now data ready and we can init static trees - static_l_desc = new StaticTreeDesc(static_ltree, extra_lbits, LITERALS + 1, L_CODES, MAX_BITS); - static_d_desc = new StaticTreeDesc(static_dtree, extra_dbits, 0, D_CODES, MAX_BITS); - static_bl_desc = new StaticTreeDesc(new Array(0), extra_blbits, 0, BL_CODES, MAX_BL_BITS); - - //static_init_done = true; -} - - -/* =========================================================================== - * Initialize a new block. - */ -function init_block(s) { - var n; /* iterates over tree elements */ - - /* Initialize the trees. */ - for (n = 0; n < L_CODES; n++) { s.dyn_ltree[n * 2]/*.Freq*/ = 0; } - for (n = 0; n < D_CODES; n++) { s.dyn_dtree[n * 2]/*.Freq*/ = 0; } - for (n = 0; n < BL_CODES; n++) { s.bl_tree[n * 2]/*.Freq*/ = 0; } - - s.dyn_ltree[END_BLOCK * 2]/*.Freq*/ = 1; - s.opt_len = s.static_len = 0; - s.last_lit = s.matches = 0; -} - - -/* =========================================================================== - * Flush the bit buffer and align the output on a byte boundary - */ -function bi_windup(s) -{ - if (s.bi_valid > 8) { - put_short(s, s.bi_buf); - } else if (s.bi_valid > 0) { - //put_byte(s, (Byte)s->bi_buf); - s.pending_buf[s.pending++] = s.bi_buf; - } - s.bi_buf = 0; - s.bi_valid = 0; -} - -/* =========================================================================== - * Copy a stored block, storing first the length and its - * one's complement if requested. - */ -function copy_block(s, buf, len, header) -//DeflateState *s; -//charf *buf; /* the input data */ -//unsigned len; /* its length */ -//int header; /* true if block header must be written */ -{ - bi_windup(s); /* align on byte boundary */ - - if (header) { - put_short(s, len); - put_short(s, ~len); - } -// while (len--) { -// put_byte(s, *buf++); -// } - utils.arraySet(s.pending_buf, s.window, buf, len, s.pending); - s.pending += len; -} - -/* =========================================================================== - * Compares to subtrees, using the tree depth as tie breaker when - * the subtrees have equal frequency. This minimizes the worst case length. - */ -function smaller(tree, n, m, depth) { - var _n2 = n * 2; - var _m2 = m * 2; - return (tree[_n2]/*.Freq*/ < tree[_m2]/*.Freq*/ || - (tree[_n2]/*.Freq*/ === tree[_m2]/*.Freq*/ && depth[n] <= depth[m])); -} - -/* =========================================================================== - * Restore the heap property by moving down the tree starting at node k, - * exchanging a node with the smallest of its two sons if necessary, stopping - * when the heap property is re-established (each father smaller than its - * two sons). - */ -function pqdownheap(s, tree, k) -// deflate_state *s; -// ct_data *tree; /* the tree to restore */ -// int k; /* node to move down */ -{ - var v = s.heap[k]; - var j = k << 1; /* left son of k */ - while (j <= s.heap_len) { - /* Set j to the smallest of the two sons: */ - if (j < s.heap_len && - smaller(tree, s.heap[j + 1], s.heap[j], s.depth)) { - j++; - } - /* Exit if v is smaller than both sons */ - if (smaller(tree, v, s.heap[j], s.depth)) { break; } - - /* Exchange v with the smallest son */ - s.heap[k] = s.heap[j]; - k = j; - - /* And continue down the tree, setting j to the left son of k */ - j <<= 1; - } - s.heap[k] = v; -} - - -// inlined manually -// var SMALLEST = 1; - -/* =========================================================================== - * Send the block data compressed using the given Huffman trees - */ -function compress_block(s, ltree, dtree) -// deflate_state *s; -// const ct_data *ltree; /* literal tree */ -// const ct_data *dtree; /* distance tree */ -{ - var dist; /* distance of matched string */ - var lc; /* match length or unmatched char (if dist == 0) */ - var lx = 0; /* running index in l_buf */ - var code; /* the code to send */ - var extra; /* number of extra bits to send */ - - if (s.last_lit !== 0) { - do { - dist = (s.pending_buf[s.d_buf + lx * 2] << 8) | (s.pending_buf[s.d_buf + lx * 2 + 1]); - lc = s.pending_buf[s.l_buf + lx]; - lx++; - - if (dist === 0) { - send_code(s, lc, ltree); /* send a literal byte */ - //Tracecv(isgraph(lc), (stderr," '%c' ", lc)); - } else { - /* Here, lc is the match length - MIN_MATCH */ - code = _length_code[lc]; - send_code(s, code + LITERALS + 1, ltree); /* send the length code */ - extra = extra_lbits[code]; - if (extra !== 0) { - lc -= base_length[code]; - send_bits(s, lc, extra); /* send the extra length bits */ - } - dist--; /* dist is now the match distance - 1 */ - code = d_code(dist); - //Assert (code < D_CODES, "bad d_code"); - - send_code(s, code, dtree); /* send the distance code */ - extra = extra_dbits[code]; - if (extra !== 0) { - dist -= base_dist[code]; - send_bits(s, dist, extra); /* send the extra distance bits */ - } - } /* literal or match pair ? */ - - /* Check that the overlay between pending_buf and d_buf+l_buf is ok: */ - //Assert((uInt)(s->pending) < s->lit_bufsize + 2*lx, - // "pendingBuf overflow"); - - } while (lx < s.last_lit); - } - - send_code(s, END_BLOCK, ltree); -} - - -/* =========================================================================== - * Construct one Huffman tree and assigns the code bit strings and lengths. - * Update the total bit length for the current block. - * IN assertion: the field freq is set for all tree elements. - * OUT assertions: the fields len and code are set to the optimal bit length - * and corresponding code. The length opt_len is updated; static_len is - * also updated if stree is not null. The field max_code is set. - */ -function build_tree(s, desc) -// deflate_state *s; -// tree_desc *desc; /* the tree descriptor */ -{ - var tree = desc.dyn_tree; - var stree = desc.stat_desc.static_tree; - var has_stree = desc.stat_desc.has_stree; - var elems = desc.stat_desc.elems; - var n, m; /* iterate over heap elements */ - var max_code = -1; /* largest code with non zero frequency */ - var node; /* new node being created */ - - /* Construct the initial heap, with least frequent element in - * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1]. - * heap[0] is not used. - */ - s.heap_len = 0; - s.heap_max = HEAP_SIZE; - - for (n = 0; n < elems; n++) { - if (tree[n * 2]/*.Freq*/ !== 0) { - s.heap[++s.heap_len] = max_code = n; - s.depth[n] = 0; - - } else { - tree[n * 2 + 1]/*.Len*/ = 0; - } - } - - /* The pkzip format requires that at least one distance code exists, - * and that at least one bit should be sent even if there is only one - * possible code. So to avoid special checks later on we force at least - * two codes of non zero frequency. - */ - while (s.heap_len < 2) { - node = s.heap[++s.heap_len] = (max_code < 2 ? ++max_code : 0); - tree[node * 2]/*.Freq*/ = 1; - s.depth[node] = 0; - s.opt_len--; - - if (has_stree) { - s.static_len -= stree[node * 2 + 1]/*.Len*/; - } - /* node is 0 or 1 so it does not have extra bits */ - } - desc.max_code = max_code; - - /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree, - * establish sub-heaps of increasing lengths: - */ - for (n = (s.heap_len >> 1/*int /2*/); n >= 1; n--) { pqdownheap(s, tree, n); } - - /* Construct the Huffman tree by repeatedly combining the least two - * frequent nodes. - */ - node = elems; /* next internal node of the tree */ - do { - //pqremove(s, tree, n); /* n = node of least frequency */ - /*** pqremove ***/ - n = s.heap[1/*SMALLEST*/]; - s.heap[1/*SMALLEST*/] = s.heap[s.heap_len--]; - pqdownheap(s, tree, 1/*SMALLEST*/); - /***/ - - m = s.heap[1/*SMALLEST*/]; /* m = node of next least frequency */ - - s.heap[--s.heap_max] = n; /* keep the nodes sorted by frequency */ - s.heap[--s.heap_max] = m; - - /* Create a new node father of n and m */ - tree[node * 2]/*.Freq*/ = tree[n * 2]/*.Freq*/ + tree[m * 2]/*.Freq*/; - s.depth[node] = (s.depth[n] >= s.depth[m] ? s.depth[n] : s.depth[m]) + 1; - tree[n * 2 + 1]/*.Dad*/ = tree[m * 2 + 1]/*.Dad*/ = node; - - /* and insert the new node in the heap */ - s.heap[1/*SMALLEST*/] = node++; - pqdownheap(s, tree, 1/*SMALLEST*/); - - } while (s.heap_len >= 2); - - s.heap[--s.heap_max] = s.heap[1/*SMALLEST*/]; - - /* At this point, the fields freq and dad are set. We can now - * generate the bit lengths. - */ - gen_bitlen(s, desc); - - /* The field len is now set, we can generate the bit codes */ - gen_codes(tree, max_code, s.bl_count); -} - - -/* =========================================================================== - * Scan a literal or distance tree to determine the frequencies of the codes - * in the bit length tree. - */ -function scan_tree(s, tree, max_code) -// deflate_state *s; -// ct_data *tree; /* the tree to be scanned */ -// int max_code; /* and its largest code of non zero frequency */ -{ - var n; /* iterates over all tree elements */ - var prevlen = -1; /* last emitted length */ - var curlen; /* length of current code */ - - var nextlen = tree[0 * 2 + 1]/*.Len*/; /* length of next code */ - - var count = 0; /* repeat count of the current code */ - var max_count = 7; /* max repeat count */ - var min_count = 4; /* min repeat count */ - - if (nextlen === 0) { - max_count = 138; - min_count = 3; - } - tree[(max_code + 1) * 2 + 1]/*.Len*/ = 0xffff; /* guard */ - - for (n = 0; n <= max_code; n++) { - curlen = nextlen; - nextlen = tree[(n + 1) * 2 + 1]/*.Len*/; - - if (++count < max_count && curlen === nextlen) { - continue; - - } else if (count < min_count) { - s.bl_tree[curlen * 2]/*.Freq*/ += count; - - } else if (curlen !== 0) { - - if (curlen !== prevlen) { s.bl_tree[curlen * 2]/*.Freq*/++; } - s.bl_tree[REP_3_6 * 2]/*.Freq*/++; - - } else if (count <= 10) { - s.bl_tree[REPZ_3_10 * 2]/*.Freq*/++; - - } else { - s.bl_tree[REPZ_11_138 * 2]/*.Freq*/++; - } - - count = 0; - prevlen = curlen; - - if (nextlen === 0) { - max_count = 138; - min_count = 3; - - } else if (curlen === nextlen) { - max_count = 6; - min_count = 3; - - } else { - max_count = 7; - min_count = 4; - } - } -} - - -/* =========================================================================== - * Send a literal or distance tree in compressed form, using the codes in - * bl_tree. - */ -function send_tree(s, tree, max_code) -// deflate_state *s; -// ct_data *tree; /* the tree to be scanned */ -// int max_code; /* and its largest code of non zero frequency */ -{ - var n; /* iterates over all tree elements */ - var prevlen = -1; /* last emitted length */ - var curlen; /* length of current code */ - - var nextlen = tree[0 * 2 + 1]/*.Len*/; /* length of next code */ - - var count = 0; /* repeat count of the current code */ - var max_count = 7; /* max repeat count */ - var min_count = 4; /* min repeat count */ - - /* tree[max_code+1].Len = -1; */ /* guard already set */ - if (nextlen === 0) { - max_count = 138; - min_count = 3; - } - - for (n = 0; n <= max_code; n++) { - curlen = nextlen; - nextlen = tree[(n + 1) * 2 + 1]/*.Len*/; - - if (++count < max_count && curlen === nextlen) { - continue; - - } else if (count < min_count) { - do { send_code(s, curlen, s.bl_tree); } while (--count !== 0); - - } else if (curlen !== 0) { - if (curlen !== prevlen) { - send_code(s, curlen, s.bl_tree); - count--; - } - //Assert(count >= 3 && count <= 6, " 3_6?"); - send_code(s, REP_3_6, s.bl_tree); - send_bits(s, count - 3, 2); - - } else if (count <= 10) { - send_code(s, REPZ_3_10, s.bl_tree); - send_bits(s, count - 3, 3); - - } else { - send_code(s, REPZ_11_138, s.bl_tree); - send_bits(s, count - 11, 7); - } - - count = 0; - prevlen = curlen; - if (nextlen === 0) { - max_count = 138; - min_count = 3; - - } else if (curlen === nextlen) { - max_count = 6; - min_count = 3; - - } else { - max_count = 7; - min_count = 4; - } - } -} - - -/* =========================================================================== - * Construct the Huffman tree for the bit lengths and return the index in - * bl_order of the last bit length code to send. - */ -function build_bl_tree(s) { - var max_blindex; /* index of last bit length code of non zero freq */ - - /* Determine the bit length frequencies for literal and distance trees */ - scan_tree(s, s.dyn_ltree, s.l_desc.max_code); - scan_tree(s, s.dyn_dtree, s.d_desc.max_code); - - /* Build the bit length tree: */ - build_tree(s, s.bl_desc); - /* opt_len now includes the length of the tree representations, except - * the lengths of the bit lengths codes and the 5+5+4 bits for the counts. - */ - - /* Determine the number of bit length codes to send. The pkzip format - * requires that at least 4 bit length codes be sent. (appnote.txt says - * 3 but the actual value used is 4.) - */ - for (max_blindex = BL_CODES - 1; max_blindex >= 3; max_blindex--) { - if (s.bl_tree[bl_order[max_blindex] * 2 + 1]/*.Len*/ !== 0) { - break; - } - } - /* Update opt_len to include the bit length tree and counts */ - s.opt_len += 3 * (max_blindex + 1) + 5 + 5 + 4; - //Tracev((stderr, "\ndyn trees: dyn %ld, stat %ld", - // s->opt_len, s->static_len)); - - return max_blindex; -} - - -/* =========================================================================== - * Send the header for a block using dynamic Huffman trees: the counts, the - * lengths of the bit length codes, the literal tree and the distance tree. - * IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4. - */ -function send_all_trees(s, lcodes, dcodes, blcodes) -// deflate_state *s; -// int lcodes, dcodes, blcodes; /* number of codes for each tree */ -{ - var rank; /* index in bl_order */ - - //Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, "not enough codes"); - //Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES, - // "too many codes"); - //Tracev((stderr, "\nbl counts: ")); - send_bits(s, lcodes - 257, 5); /* not +255 as stated in appnote.txt */ - send_bits(s, dcodes - 1, 5); - send_bits(s, blcodes - 4, 4); /* not -3 as stated in appnote.txt */ - for (rank = 0; rank < blcodes; rank++) { - //Tracev((stderr, "\nbl code %2d ", bl_order[rank])); - send_bits(s, s.bl_tree[bl_order[rank] * 2 + 1]/*.Len*/, 3); - } - //Tracev((stderr, "\nbl tree: sent %ld", s->bits_sent)); - - send_tree(s, s.dyn_ltree, lcodes - 1); /* literal tree */ - //Tracev((stderr, "\nlit tree: sent %ld", s->bits_sent)); - - send_tree(s, s.dyn_dtree, dcodes - 1); /* distance tree */ - //Tracev((stderr, "\ndist tree: sent %ld", s->bits_sent)); -} - - -/* =========================================================================== - * Check if the data type is TEXT or BINARY, using the following algorithm: - * - TEXT if the two conditions below are satisfied: - * a) There are no non-portable control characters belonging to the - * "black list" (0..6, 14..25, 28..31). - * b) There is at least one printable character belonging to the - * "white list" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255). - * - BINARY otherwise. - * - The following partially-portable control characters form a - * "gray list" that is ignored in this detection algorithm: - * (7 {BEL}, 8 {BS}, 11 {VT}, 12 {FF}, 26 {SUB}, 27 {ESC}). - * IN assertion: the fields Freq of dyn_ltree are set. - */ -function detect_data_type(s) { - /* black_mask is the bit mask of black-listed bytes - * set bits 0..6, 14..25, and 28..31 - * 0xf3ffc07f = binary 11110011111111111100000001111111 - */ - var black_mask = 0xf3ffc07f; - var n; - - /* Check for non-textual ("black-listed") bytes. */ - for (n = 0; n <= 31; n++, black_mask >>>= 1) { - if ((black_mask & 1) && (s.dyn_ltree[n * 2]/*.Freq*/ !== 0)) { - return Z_BINARY; - } - } - - /* Check for textual ("white-listed") bytes. */ - if (s.dyn_ltree[9 * 2]/*.Freq*/ !== 0 || s.dyn_ltree[10 * 2]/*.Freq*/ !== 0 || - s.dyn_ltree[13 * 2]/*.Freq*/ !== 0) { - return Z_TEXT; - } - for (n = 32; n < LITERALS; n++) { - if (s.dyn_ltree[n * 2]/*.Freq*/ !== 0) { - return Z_TEXT; - } - } - - /* There are no "black-listed" or "white-listed" bytes: - * this stream either is empty or has tolerated ("gray-listed") bytes only. - */ - return Z_BINARY; -} - - -var static_init_done = false; - -/* =========================================================================== - * Initialize the tree data structures for a new zlib stream. - */ -function _tr_init(s) -{ - - if (!static_init_done) { - tr_static_init(); - static_init_done = true; - } - - s.l_desc = new TreeDesc(s.dyn_ltree, static_l_desc); - s.d_desc = new TreeDesc(s.dyn_dtree, static_d_desc); - s.bl_desc = new TreeDesc(s.bl_tree, static_bl_desc); - - s.bi_buf = 0; - s.bi_valid = 0; - - /* Initialize the first block of the first file: */ - init_block(s); -} - - -/* =========================================================================== - * Send a stored block - */ -function _tr_stored_block(s, buf, stored_len, last) -//DeflateState *s; -//charf *buf; /* input block */ -//ulg stored_len; /* length of input block */ -//int last; /* one if this is the last block for a file */ -{ - send_bits(s, (STORED_BLOCK << 1) + (last ? 1 : 0), 3); /* send block type */ - copy_block(s, buf, stored_len, true); /* with header */ -} - - -/* =========================================================================== - * Send one empty static block to give enough lookahead for inflate. - * This takes 10 bits, of which 7 may remain in the bit buffer. - */ -function _tr_align(s) { - send_bits(s, STATIC_TREES << 1, 3); - send_code(s, END_BLOCK, static_ltree); - bi_flush(s); -} - - -/* =========================================================================== - * Determine the best encoding for the current block: dynamic trees, static - * trees or store, and output the encoded block to the zip file. - */ -function _tr_flush_block(s, buf, stored_len, last) -//DeflateState *s; -//charf *buf; /* input block, or NULL if too old */ -//ulg stored_len; /* length of input block */ -//int last; /* one if this is the last block for a file */ -{ - var opt_lenb, static_lenb; /* opt_len and static_len in bytes */ - var max_blindex = 0; /* index of last bit length code of non zero freq */ - - /* Build the Huffman trees unless a stored block is forced */ - if (s.level > 0) { - - /* Check if the file is binary or text */ - if (s.strm.data_type === Z_UNKNOWN) { - s.strm.data_type = detect_data_type(s); - } - - /* Construct the literal and distance trees */ - build_tree(s, s.l_desc); - // Tracev((stderr, "\nlit data: dyn %ld, stat %ld", s->opt_len, - // s->static_len)); - - build_tree(s, s.d_desc); - // Tracev((stderr, "\ndist data: dyn %ld, stat %ld", s->opt_len, - // s->static_len)); - /* At this point, opt_len and static_len are the total bit lengths of - * the compressed block data, excluding the tree representations. - */ - - /* Build the bit length tree for the above two trees, and get the index - * in bl_order of the last bit length code to send. - */ - max_blindex = build_bl_tree(s); - - /* Determine the best encoding. Compute the block lengths in bytes. */ - opt_lenb = (s.opt_len + 3 + 7) >>> 3; - static_lenb = (s.static_len + 3 + 7) >>> 3; - - // Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ", - // opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len, - // s->last_lit)); - - if (static_lenb <= opt_lenb) { opt_lenb = static_lenb; } - - } else { - // Assert(buf != (char*)0, "lost buf"); - opt_lenb = static_lenb = stored_len + 5; /* force a stored block */ - } - - if ((stored_len + 4 <= opt_lenb) && (buf !== -1)) { - /* 4: two words for the lengths */ - - /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE. - * Otherwise we can't have processed more than WSIZE input bytes since - * the last block flush, because compression would have been - * successful. If LIT_BUFSIZE <= WSIZE, it is never too late to - * transform a block into a stored block. - */ - _tr_stored_block(s, buf, stored_len, last); - - } else if (s.strategy === Z_FIXED || static_lenb === opt_lenb) { - - send_bits(s, (STATIC_TREES << 1) + (last ? 1 : 0), 3); - compress_block(s, static_ltree, static_dtree); - - } else { - send_bits(s, (DYN_TREES << 1) + (last ? 1 : 0), 3); - send_all_trees(s, s.l_desc.max_code + 1, s.d_desc.max_code + 1, max_blindex + 1); - compress_block(s, s.dyn_ltree, s.dyn_dtree); - } - // Assert (s->compressed_len == s->bits_sent, "bad compressed size"); - /* The above check is made mod 2^32, for files larger than 512 MB - * and uLong implemented on 32 bits. - */ - init_block(s); - - if (last) { - bi_windup(s); - } - // Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len>>3, - // s->compressed_len-7*last)); -} - -/* =========================================================================== - * Save the match info and tally the frequency counts. Return true if - * the current block must be flushed. - */ -function _tr_tally(s, dist, lc) -// deflate_state *s; -// unsigned dist; /* distance of matched string */ -// unsigned lc; /* match length-MIN_MATCH or unmatched char (if dist==0) */ -{ - //var out_length, in_length, dcode; - - s.pending_buf[s.d_buf + s.last_lit * 2] = (dist >>> 8) & 0xff; - s.pending_buf[s.d_buf + s.last_lit * 2 + 1] = dist & 0xff; - - s.pending_buf[s.l_buf + s.last_lit] = lc & 0xff; - s.last_lit++; - - if (dist === 0) { - /* lc is the unmatched char */ - s.dyn_ltree[lc * 2]/*.Freq*/++; - } else { - s.matches++; - /* Here, lc is the match length - MIN_MATCH */ - dist--; /* dist = match distance - 1 */ - //Assert((ush)dist < (ush)MAX_DIST(s) && - // (ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) && - // (ush)d_code(dist) < (ush)D_CODES, "_tr_tally: bad match"); - - s.dyn_ltree[(_length_code[lc] + LITERALS + 1) * 2]/*.Freq*/++; - s.dyn_dtree[d_code(dist) * 2]/*.Freq*/++; - } - -// (!) This block is disabled in zlib defaults, -// don't enable it for binary compatibility - -//#ifdef TRUNCATE_BLOCK -// /* Try to guess if it is profitable to stop the current block here */ -// if ((s.last_lit & 0x1fff) === 0 && s.level > 2) { -// /* Compute an upper bound for the compressed length */ -// out_length = s.last_lit*8; -// in_length = s.strstart - s.block_start; -// -// for (dcode = 0; dcode < D_CODES; dcode++) { -// out_length += s.dyn_dtree[dcode*2]/*.Freq*/ * (5 + extra_dbits[dcode]); -// } -// out_length >>>= 3; -// //Tracev((stderr,"\nlast_lit %u, in %ld, out ~%ld(%ld%%) ", -// // s->last_lit, in_length, out_length, -// // 100L - out_length*100L/in_length)); -// if (s.matches < (s.last_lit>>1)/*int /2*/ && out_length < (in_length>>1)/*int /2*/) { -// return true; -// } -// } -//#endif - - return (s.last_lit === s.lit_bufsize - 1); - /* We avoid equality with lit_bufsize because of wraparound at 64K - * on 16 bit machines and because stored blocks are restricted to - * 64K-1 bytes. - */ -} - -exports._tr_init = _tr_init; -exports._tr_stored_block = _tr_stored_block; -exports._tr_flush_block = _tr_flush_block; -exports._tr_tally = _tr_tally; -exports._tr_align = _tr_align; - -},{"../utils/common":1}],8:[function(require,module,exports){ -'use strict'; - -// (C) 1995-2013 Jean-loup Gailly and Mark Adler -// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would be -// appreciated but is not required. -// 2. Altered source versions must be plainly marked as such, and must not be -// misrepresented as being the original software. -// 3. This notice may not be removed or altered from any source distribution. - -function ZStream() { - /* next input byte */ - this.input = null; // JS specific, because we have no pointers - this.next_in = 0; - /* number of bytes available at input */ - this.avail_in = 0; - /* total number of input bytes read so far */ - this.total_in = 0; - /* next output byte should be put there */ - this.output = null; // JS specific, because we have no pointers - this.next_out = 0; - /* remaining free space at output */ - this.avail_out = 0; - /* total number of bytes output so far */ - this.total_out = 0; - /* last error message, NULL if no error */ - this.msg = ''/*Z_NULL*/; - /* not visible by applications */ - this.state = null; - /* best guess about the data type: binary or text */ - this.data_type = 2/*Z_UNKNOWN*/; - /* adler32 value of the uncompressed data */ - this.adler = 0; -} - -module.exports = ZStream; - -},{}],"/lib/deflate.js":[function(require,module,exports){ -'use strict'; - - -var zlib_deflate = require('./zlib/deflate'); -var utils = require('./utils/common'); -var strings = require('./utils/strings'); -var msg = require('./zlib/messages'); -var ZStream = require('./zlib/zstream'); - -var toString = Object.prototype.toString; - -/* Public constants ==========================================================*/ -/* ===========================================================================*/ - -var Z_NO_FLUSH = 0; -var Z_FINISH = 4; - -var Z_OK = 0; -var Z_STREAM_END = 1; -var Z_SYNC_FLUSH = 2; - -var Z_DEFAULT_COMPRESSION = -1; - -var Z_DEFAULT_STRATEGY = 0; - -var Z_DEFLATED = 8; - -/* ===========================================================================*/ - - -/** - * class Deflate - * - * Generic JS-style wrapper for zlib calls. If you don't need - * streaming behaviour - use more simple functions: [[deflate]], - * [[deflateRaw]] and [[gzip]]. - **/ - -/* internal - * Deflate.chunks -> Array - * - * Chunks of output data, if [[Deflate#onData]] not overridden. - **/ - -/** - * Deflate.result -> Uint8Array|Array - * - * Compressed result, generated by default [[Deflate#onData]] - * and [[Deflate#onEnd]] handlers. Filled after you push last chunk - * (call [[Deflate#push]] with `Z_FINISH` / `true` param) or if you - * push a chunk with explicit flush (call [[Deflate#push]] with - * `Z_SYNC_FLUSH` param). - **/ - -/** - * Deflate.err -> Number - * - * Error code after deflate finished. 0 (Z_OK) on success. - * You will not need it in real life, because deflate errors - * are possible only on wrong options or bad `onData` / `onEnd` - * custom handlers. - **/ - -/** - * Deflate.msg -> String - * - * Error message, if [[Deflate.err]] != 0 - **/ - - -/** - * new Deflate(options) - * - options (Object): zlib deflate options. - * - * Creates new deflator instance with specified params. Throws exception - * on bad params. Supported options: - * - * - `level` - * - `windowBits` - * - `memLevel` - * - `strategy` - * - `dictionary` - * - * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced) - * for more information on these. - * - * Additional options, for internal needs: - * - * - `chunkSize` - size of generated data chunks (16K by default) - * - `raw` (Boolean) - do raw deflate - * - `gzip` (Boolean) - create gzip wrapper - * - `to` (String) - if equal to 'string', then result will be "binary string" - * (each char code [0..255]) - * - `header` (Object) - custom header for gzip - * - `text` (Boolean) - true if compressed data believed to be text - * - `time` (Number) - modification time, unix timestamp - * - `os` (Number) - operation system code - * - `extra` (Array) - array of bytes with extra data (max 65536) - * - `name` (String) - file name (binary string) - * - `comment` (String) - comment (binary string) - * - `hcrc` (Boolean) - true if header crc should be added - * - * ##### Example: - * - * ```javascript - * var pako = require('pako') - * , chunk1 = Uint8Array([1,2,3,4,5,6,7,8,9]) - * , chunk2 = Uint8Array([10,11,12,13,14,15,16,17,18,19]); - * - * var deflate = new pako.Deflate({ level: 3}); - * - * deflate.push(chunk1, false); - * deflate.push(chunk2, true); // true -> last chunk - * - * if (deflate.err) { throw new Error(deflate.err); } - * - * console.log(deflate.result); - * ``` - **/ -function Deflate(options) { - if (!(this instanceof Deflate)) return new Deflate(options); - - this.options = utils.assign({ - level: Z_DEFAULT_COMPRESSION, - method: Z_DEFLATED, - chunkSize: 16384, - windowBits: 15, - memLevel: 8, - strategy: Z_DEFAULT_STRATEGY, - to: '' - }, options || {}); - - var opt = this.options; - - if (opt.raw && (opt.windowBits > 0)) { - opt.windowBits = -opt.windowBits; - } - - else if (opt.gzip && (opt.windowBits > 0) && (opt.windowBits < 16)) { - opt.windowBits += 16; - } - - this.err = 0; // error code, if happens (0 = Z_OK) - this.msg = ''; // error message - this.ended = false; // used to avoid multiple onEnd() calls - this.chunks = []; // chunks of compressed data - - this.strm = new ZStream(); - this.strm.avail_out = 0; - - var status = zlib_deflate.deflateInit2( - this.strm, - opt.level, - opt.method, - opt.windowBits, - opt.memLevel, - opt.strategy - ); - - if (status !== Z_OK) { - throw new Error(msg[status]); - } - - if (opt.header) { - zlib_deflate.deflateSetHeader(this.strm, opt.header); - } - - if (opt.dictionary) { - var dict; - // Convert data if needed - if (typeof opt.dictionary === 'string') { - // If we need to compress text, change encoding to utf8. - dict = strings.string2buf(opt.dictionary); - } else if (toString.call(opt.dictionary) === '[object ArrayBuffer]') { - dict = new Uint8Array(opt.dictionary); - } else { - dict = opt.dictionary; - } - - status = zlib_deflate.deflateSetDictionary(this.strm, dict); - - if (status !== Z_OK) { - throw new Error(msg[status]); - } - - this._dict_set = true; - } -} - -/** - * Deflate#push(data[, mode]) -> Boolean - * - data (Uint8Array|Array|ArrayBuffer|String): input data. Strings will be - * converted to utf8 byte sequence. - * - mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE modes. - * See constants. Skipped or `false` means Z_NO_FLUSH, `true` means Z_FINISH. - * - * Sends input data to deflate pipe, generating [[Deflate#onData]] calls with - * new compressed chunks. Returns `true` on success. The last data block must have - * mode Z_FINISH (or `true`). That will flush internal pending buffers and call - * [[Deflate#onEnd]]. For interim explicit flushes (without ending the stream) you - * can use mode Z_SYNC_FLUSH, keeping the compression context. - * - * On fail call [[Deflate#onEnd]] with error code and return false. - * - * We strongly recommend to use `Uint8Array` on input for best speed (output - * array format is detected automatically). Also, don't skip last param and always - * use the same type in your code (boolean or number). That will improve JS speed. - * - * For regular `Array`-s make sure all elements are [0..255]. - * - * ##### Example - * - * ```javascript - * push(chunk, false); // push one of data chunks - * ... - * push(chunk, true); // push last chunk - * ``` - **/ -Deflate.prototype.push = function (data, mode) { - var strm = this.strm; - var chunkSize = this.options.chunkSize; - var status, _mode; - - if (this.ended) { return false; } - - _mode = (mode === ~~mode) ? mode : ((mode === true) ? Z_FINISH : Z_NO_FLUSH); - - // Convert data if needed - if (typeof data === 'string') { - // If we need to compress text, change encoding to utf8. - strm.input = strings.string2buf(data); - } else if (toString.call(data) === '[object ArrayBuffer]') { - strm.input = new Uint8Array(data); - } else { - strm.input = data; - } - - strm.next_in = 0; - strm.avail_in = strm.input.length; - - do { - if (strm.avail_out === 0) { - strm.output = new utils.Buf8(chunkSize); - strm.next_out = 0; - strm.avail_out = chunkSize; - } - status = zlib_deflate.deflate(strm, _mode); /* no bad return value */ - - if (status !== Z_STREAM_END && status !== Z_OK) { - this.onEnd(status); - this.ended = true; - return false; - } - if (strm.avail_out === 0 || (strm.avail_in === 0 && (_mode === Z_FINISH || _mode === Z_SYNC_FLUSH))) { - if (this.options.to === 'string') { - this.onData(strings.buf2binstring(utils.shrinkBuf(strm.output, strm.next_out))); - } else { - this.onData(utils.shrinkBuf(strm.output, strm.next_out)); - } - } - } while ((strm.avail_in > 0 || strm.avail_out === 0) && status !== Z_STREAM_END); - - // Finalize on the last chunk. - if (_mode === Z_FINISH) { - status = zlib_deflate.deflateEnd(this.strm); - this.onEnd(status); - this.ended = true; - return status === Z_OK; - } - - // callback interim results if Z_SYNC_FLUSH. - if (_mode === Z_SYNC_FLUSH) { - this.onEnd(Z_OK); - strm.avail_out = 0; - return true; - } - - return true; -}; - - -/** - * Deflate#onData(chunk) -> Void - * - chunk (Uint8Array|Array|String): output data. Type of array depends - * on js engine support. When string output requested, each chunk - * will be string. - * - * By default, stores data blocks in `chunks[]` property and glue - * those in `onEnd`. Override this handler, if you need another behaviour. - **/ -Deflate.prototype.onData = function (chunk) { - this.chunks.push(chunk); -}; - - -/** - * Deflate#onEnd(status) -> Void - * - status (Number): deflate status. 0 (Z_OK) on success, - * other if not. - * - * Called once after you tell deflate that the input stream is - * complete (Z_FINISH) or should be flushed (Z_SYNC_FLUSH) - * or if an error happened. By default - join collected chunks, - * free memory and fill `results` / `err` properties. - **/ -Deflate.prototype.onEnd = function (status) { - // On success - join - if (status === Z_OK) { - if (this.options.to === 'string') { - this.result = this.chunks.join(''); - } else { - this.result = utils.flattenChunks(this.chunks); - } - } - this.chunks = []; - this.err = status; - this.msg = this.strm.msg; -}; - - -/** - * deflate(data[, options]) -> Uint8Array|Array|String - * - data (Uint8Array|Array|String): input data to compress. - * - options (Object): zlib deflate options. - * - * Compress `data` with deflate algorithm and `options`. - * - * Supported options are: - * - * - level - * - windowBits - * - memLevel - * - strategy - * - dictionary - * - * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced) - * for more information on these. - * - * Sugar (options): - * - * - `raw` (Boolean) - say that we work with raw stream, if you don't wish to specify - * negative windowBits implicitly. - * - `to` (String) - if equal to 'string', then result will be "binary string" - * (each char code [0..255]) - * - * ##### Example: - * - * ```javascript - * var pako = require('pako') - * , data = Uint8Array([1,2,3,4,5,6,7,8,9]); - * - * console.log(pako.deflate(data)); - * ``` - **/ -function deflate(input, options) { - var deflator = new Deflate(options); - - deflator.push(input, true); - - // That will never happens, if you don't cheat with options :) - if (deflator.err) { throw deflator.msg || msg[deflator.err]; } - - return deflator.result; -} - - -/** - * deflateRaw(data[, options]) -> Uint8Array|Array|String - * - data (Uint8Array|Array|String): input data to compress. - * - options (Object): zlib deflate options. - * - * The same as [[deflate]], but creates raw data, without wrapper - * (header and adler32 crc). - **/ -function deflateRaw(input, options) { - options = options || {}; - options.raw = true; - return deflate(input, options); -} - - -/** - * gzip(data[, options]) -> Uint8Array|Array|String - * - data (Uint8Array|Array|String): input data to compress. - * - options (Object): zlib deflate options. - * - * The same as [[deflate]], but create gzip wrapper instead of - * deflate one. - **/ -function gzip(input, options) { - options = options || {}; - options.gzip = true; - return deflate(input, options); -} - - -exports.Deflate = Deflate; -exports.deflate = deflate; -exports.deflateRaw = deflateRaw; -exports.gzip = gzip; - -},{"./utils/common":1,"./utils/strings":2,"./zlib/deflate":5,"./zlib/messages":6,"./zlib/zstream":8}]},{},[])("/lib/deflate.js") -}); diff --git a/school/node_modules/pako/dist/pako_deflate.min.js b/school/node_modules/pako/dist/pako_deflate.min.js deleted file mode 100644 index 7792553..0000000 --- a/school/node_modules/pako/dist/pako_deflate.min.js +++ /dev/null @@ -1 +0,0 @@ -!function(t){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=t();else if("function"==typeof 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P(){this.strm=null,this.status=0,this.pending_buf=null,this.pending_buf_size=0,this.pending_out=0,this.pending=0,this.wrap=0,this.gzhead=null,this.gzindex=0,this.method=v,this.last_flush=-1,this.w_size=0,this.w_bits=0,this.w_mask=0,this.window=null,this.window_size=0,this.prev=null,this.head=null,this.ins_h=0,this.hash_size=0,this.hash_bits=0,this.hash_mask=0,this.hash_shift=0,this.block_start=0,this.match_length=0,this.prev_match=0,this.match_available=0,this.strstart=0,this.match_start=0,this.lookahead=0,this.prev_length=0,this.max_chain_length=0,this.max_lazy_match=0,this.level=0,this.strategy=0,this.good_match=0,this.nice_match=0,this.dyn_ltree=new u.Buf16(2*y),this.dyn_dtree=new u.Buf16(2*(2*s+1)),this.bl_tree=new u.Buf16(2*(2*h+1)),O(this.dyn_ltree),O(this.dyn_dtree),O(this.bl_tree),this.l_desc=null,this.d_desc=null,this.bl_desc=null,this.bl_count=new u.Buf16(k+1),this.heap=new u.Buf16(2*i+1),O(this.heap),this.heap_len=0,this.heap_max=0,this.depth=new u.Buf16(2*i+1),O(this.depth),this.l_buf=0,this.lit_bufsize=0,this.last_lit=0,this.d_buf=0,this.opt_len=0,this.static_len=0,this.matches=0,this.insert=0,this.bi_buf=0,this.bi_valid=0}function G(t){var e;return t&&t.state?(t.total_in=t.total_out=0,t.data_type=r,(e=t.state).pending=0,e.pending_out=0,e.wrap<0&&(e.wrap=-e.wrap),e.status=e.wrap?A:C,t.adler=2===e.wrap?0:1,e.last_flush=_,o._tr_init(e),p):D(t,g)}function J(t){var e,a=G(t);return a===p&&((e=t.state).window_size=2*e.w_size,O(e.head),e.max_lazy_match=l[e.level].max_lazy,e.good_match=l[e.level].good_length,e.nice_match=l[e.level].nice_length,e.max_chain_length=l[e.level].max_chain,e.strstart=0,e.block_start=0,e.lookahead=0,e.insert=0,e.match_length=e.prev_length=z-1,e.match_available=0,e.ins_h=0),a}function Q(t,e,a,n,r,i){if(!t)return g;var s=1;if(e===m&&(e=6),n<0?(s=0,n=-n):15<n&&(s=2,n-=16),r<1||w<r||a!==v||n<8||15<n||e<0||9<e||i<0||b<i)return D(t,g);8===n&&(n=9);var h=new P;return(t.state=h).strm=t,h.wrap=s,h.gzhead=null,h.w_bits=n,h.w_size=1<<h.w_bits,h.w_mask=h.w_size-1,h.hash_bits=r+7,h.hash_size=1<<h.hash_bits,h.hash_mask=h.hash_size-1,h.hash_shift=~~((h.hash_bits+z-1)/z),h.window=new u.Buf8(2*h.w_size),h.head=new u.Buf16(h.hash_size),h.prev=new u.Buf16(h.w_size),h.lit_bufsize=1<<r+6,h.pending_buf_size=4*h.lit_bufsize,h.pending_buf=new u.Buf8(h.pending_buf_size),h.d_buf=1*h.lit_bufsize,h.l_buf=3*h.lit_bufsize,h.level=e,h.strategy=i,h.method=a,J(t)}l=[new M(0,0,0,0,function(t,e){var a=65535;for(a>t.pending_buf_size-5&&(a=t.pending_buf_size-5);;){if(t.lookahead<=1){if(H(t),0===t.lookahead&&e===_)return S;if(0===t.lookahead)break}t.strstart+=t.lookahead,t.lookahead=0;var n=t.block_start+a;if((0===t.strstart||t.strstart>=n)&&(t.lookahead=t.strstart-n,t.strstart=n,T(t,!1),0===t.strm.avail_out))return S;if(t.strstart-t.block_start>=t.w_size-B&&(T(t,!1),0===t.strm.avail_out))return S}return t.insert=0,e===d?(T(t,!0),0===t.strm.avail_out?E:U):(t.strstart>t.block_start&&(T(t,!1),t.strm.avail_out),S)}),new M(4,4,8,4,F),new M(4,5,16,8,F),new M(4,6,32,32,F),new M(4,4,16,16,K),new M(8,16,32,32,K),new M(8,16,128,128,K),new M(8,32,128,256,K),new M(32,128,258,1024,K),new M(32,258,258,4096,K)],a.deflateInit=function(t,e){return Q(t,e,v,15,8,0)},a.deflateInit2=Q,a.deflateReset=J,a.deflateResetKeep=G,a.deflateSetHeader=function(t,e){return t&&t.state?2!==t.state.wrap?g:(t.state.gzhead=e,p):g},a.deflate=function(t,e){var a,n,r,i;if(!t||!t.state||5<e||e<0)return t?D(t,g):g;if(n=t.state,!t.output||!t.input&&0!==t.avail_in||666===n.status&&e!==d)return D(t,0===t.avail_out?-5:g);if(n.strm=t,a=n.last_flush,n.last_flush=e,n.status===A)if(2===n.wrap)t.adler=0,L(n,31),L(n,139),L(n,8),n.gzhead?(L(n,(n.gzhead.text?1:0)+(n.gzhead.hcrc?2:0)+(n.gzhead.extra?4:0)+(n.gzhead.name?8:0)+(n.gzhead.comment?16:0)),L(n,255&n.gzhead.time),L(n,n.gzhead.time>>8&255),L(n,n.gzhead.time>>16&255),L(n,n.gzhead.time>>24&255),L(n,9===n.level?2:2<=n.strategy||n.level<2?4:0),L(n,255&n.gzhead.os),n.gzhead.extra&&n.gzhead.extra.length&&(L(n,255&n.gzhead.extra.length),L(n,n.gzhead.extra.length>>8&255)),n.gzhead.hcrc&&(t.adler=c(t.adler,n.pending_buf,n.pending,0)),n.gzindex=0,n.status=69):(L(n,0),L(n,0),L(n,0),L(n,0),L(n,0),L(n,9===n.level?2:2<=n.strategy||n.level<2?4:0),L(n,3),n.status=C);else{var s=v+(n.w_bits-8<<4)<<8;s|=(2<=n.strategy||n.level<2?0:n.level<6?1:6===n.level?2:3)<<6,0!==n.strstart&&(s|=32),s+=31-s%31,n.status=C,N(n,s),0!==n.strstart&&(N(n,t.adler>>>16),N(n,65535&t.adler)),t.adler=1}if(69===n.status)if(n.gzhead.extra){for(r=n.pending;n.gzindex<(65535&n.gzhead.extra.length)&&(n.pending!==n.pending_buf_size||(n.gzhead.hcrc&&n.pending>r&&(t.adler=c(t.adler,n.pending_buf,n.pending-r,r)),q(t),r=n.pending,n.pending!==n.pending_buf_size));)L(n,255&n.gzhead.extra[n.gzindex]),n.gzindex++;n.gzhead.hcrc&&n.pending>r&&(t.adler=c(t.adler,n.pending_buf,n.pending-r,r)),n.gzindex===n.gzhead.extra.length&&(n.gzindex=0,n.status=73)}else n.status=73;if(73===n.status)if(n.gzhead.name){r=n.pending;do{if(n.pending===n.pending_buf_size&&(n.gzhead.hcrc&&n.pending>r&&(t.adler=c(t.adler,n.pending_buf,n.pending-r,r)),q(t),r=n.pending,n.pending===n.pending_buf_size)){i=1;break}L(n,i=n.gzindex<n.gzhead.name.length?255&n.gzhead.name.charCodeAt(n.gzindex++):0)}while(0!==i);n.gzhead.hcrc&&n.pending>r&&(t.adler=c(t.adler,n.pending_buf,n.pending-r,r)),0===i&&(n.gzindex=0,n.status=91)}else n.status=91;if(91===n.status)if(n.gzhead.comment){r=n.pending;do{if(n.pending===n.pending_buf_size&&(n.gzhead.hcrc&&n.pending>r&&(t.adler=c(t.adler,n.pending_buf,n.pending-r,r)),q(t),r=n.pending,n.pending===n.pending_buf_size)){i=1;break}L(n,i=n.gzindex<n.gzhead.comment.length?255&n.gzhead.comment.charCodeAt(n.gzindex++):0)}while(0!==i);n.gzhead.hcrc&&n.pending>r&&(t.adler=c(t.adler,n.pending_buf,n.pending-r,r)),0===i&&(n.status=103)}else n.status=103;if(103===n.status&&(n.gzhead.hcrc?(n.pending+2>n.pending_buf_size&&q(t),n.pending+2<=n.pending_buf_size&&(L(n,255&t.adler),L(n,t.adler>>8&255),t.adler=0,n.status=C)):n.status=C),0!==n.pending){if(q(t),0===t.avail_out)return n.last_flush=-1,p}else if(0===t.avail_in&&I(e)<=I(a)&&e!==d)return D(t,-5);if(666===n.status&&0!==t.avail_in)return D(t,-5);if(0!==t.avail_in||0!==n.lookahead||e!==_&&666!==n.status){var h=2===n.strategy?function(t,e){for(var a;;){if(0===t.lookahead&&(H(t),0===t.lookahead)){if(e===_)return S;break}if(t.match_length=0,a=o._tr_tally(t,0,t.window[t.strstart]),t.lookahead--,t.strstart++,a&&(T(t,!1),0===t.strm.avail_out))return S}return t.insert=0,e===d?(T(t,!0),0===t.strm.avail_out?E:U):t.last_lit&&(T(t,!1),0===t.strm.avail_out)?S:j}(n,e):3===n.strategy?function(t,e){for(var a,n,r,i,s=t.window;;){if(t.lookahead<=x){if(H(t),t.lookahead<=x&&e===_)return S;if(0===t.lookahead)break}if(t.match_length=0,t.lookahead>=z&&0<t.strstart&&(n=s[r=t.strstart-1])===s[++r]&&n===s[++r]&&n===s[++r]){i=t.strstart+x;do{}while(n===s[++r]&&n===s[++r]&&n===s[++r]&&n===s[++r]&&n===s[++r]&&n===s[++r]&&n===s[++r]&&n===s[++r]&&r<i);t.match_length=x-(i-r),t.match_length>t.lookahead&&(t.match_length=t.lookahead)}if(t.match_length>=z?(a=o._tr_tally(t,1,t.match_length-z),t.lookahead-=t.match_length,t.strstart+=t.match_length,t.match_length=0):(a=o._tr_tally(t,0,t.window[t.strstart]),t.lookahead--,t.strstart++),a&&(T(t,!1),0===t.strm.avail_out))return S}return t.insert=0,e===d?(T(t,!0),0===t.strm.avail_out?E:U):t.last_lit&&(T(t,!1),0===t.strm.avail_out)?S:j}(n,e):l[n.level].func(n,e);if(h!==E&&h!==U||(n.status=666),h===S||h===E)return 0===t.avail_out&&(n.last_flush=-1),p;if(h===j&&(1===e?o._tr_align(n):5!==e&&(o._tr_stored_block(n,0,0,!1),3===e&&(O(n.head),0===n.lookahead&&(n.strstart=0,n.block_start=0,n.insert=0))),q(t),0===t.avail_out))return n.last_flush=-1,p}return e!==d?p:n.wrap<=0?1:(2===n.wrap?(L(n,255&t.adler),L(n,t.adler>>8&255),L(n,t.adler>>16&255),L(n,t.adler>>24&255),L(n,255&t.total_in),L(n,t.total_in>>8&255),L(n,t.total_in>>16&255),L(n,t.total_in>>24&255)):(N(n,t.adler>>>16),N(n,65535&t.adler)),q(t),0<n.wrap&&(n.wrap=-n.wrap),0!==n.pending?p:1)},a.deflateEnd=function(t){var e;return t&&t.state?(e=t.state.status)!==A&&69!==e&&73!==e&&91!==e&&103!==e&&e!==C&&666!==e?D(t,g):(t.state=null,e===C?D(t,-3):p):g},a.deflateSetDictionary=function(t,e){var a,n,r,i,s,h,l,o,_=e.length;if(!t||!t.state)return g;if(2===(i=(a=t.state).wrap)||1===i&&a.status!==A||a.lookahead)return g;for(1===i&&(t.adler=f(t.adler,e,_,0)),a.wrap=0,_>=a.w_size&&(0===i&&(O(a.head),a.strstart=0,a.block_start=0,a.insert=0),o=new u.Buf8(a.w_size),u.arraySet(o,e,_-a.w_size,a.w_size,0),e=o,_=a.w_size),s=t.avail_in,h=t.next_in,l=t.input,t.avail_in=_,t.next_in=0,t.input=e,H(a);a.lookahead>=z;){for(n=a.strstart,r=a.lookahead-(z-1);a.ins_h=(a.ins_h<<a.hash_shift^a.window[n+z-1])&a.hash_mask,a.prev[n&a.w_mask]=a.head[a.ins_h],a.head[a.ins_h]=n,n++,--r;);a.strstart=n,a.lookahead=z-1,H(a)}return a.strstart+=a.lookahead,a.block_start=a.strstart,a.insert=a.lookahead,a.lookahead=0,a.match_length=a.prev_length=z-1,a.match_available=0,t.next_in=h,t.input=l,t.avail_in=s,a.wrap=i,p},a.deflateInfo="pako deflate (from Nodeca project)"},{"../utils/common":1,"./adler32":3,"./crc32":4,"./messages":6,"./trees":7}],6:[function(t,e,a){"use strict";e.exports={2:"need dictionary",1:"stream end",0:"","-1":"file error","-2":"stream error","-3":"data error","-4":"insufficient memory","-5":"buffer error","-6":"incompatible version"}},{}],7:[function(t,e,a){"use strict";var l=t("../utils/common"),h=0,o=1;function n(t){for(var e=t.length;0<=--e;)t[e]=0}var _=0,s=29,d=256,u=d+1+s,f=30,c=19,g=2*u+1,m=15,r=16,p=7,b=256,v=16,w=17,y=18,k=[0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0],z=[0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13],x=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7],B=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15],A=new Array(2*(u+2));n(A);var C=new Array(2*f);n(C);var S=new Array(512);n(S);var j=new Array(256);n(j);var E=new Array(s);n(E);var U,D,I,O=new Array(f);function q(t,e,a,n,r){this.static_tree=t,this.extra_bits=e,this.extra_base=a,this.elems=n,this.max_length=r,this.has_stree=t&&t.length}function i(t,e){this.dyn_tree=t,this.max_code=0,this.stat_desc=e}function T(t){return t<256?S[t]:S[256+(t>>>7)]}function L(t,e){t.pending_buf[t.pending++]=255&e,t.pending_buf[t.pending++]=e>>>8&255}function N(t,e,a){t.bi_valid>r-a?(t.bi_buf|=e<<t.bi_valid&65535,L(t,t.bi_buf),t.bi_buf=e>>r-t.bi_valid,t.bi_valid+=a-r):(t.bi_buf|=e<<t.bi_valid&65535,t.bi_valid+=a)}function 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n,r,i,s,h=0;if(0!==t.last_lit)for(;n=t.pending_buf[t.d_buf+2*h]<<8|t.pending_buf[t.d_buf+2*h+1],r=t.pending_buf[t.l_buf+h],h++,0===n?R(t,r,e):(R(t,(i=j[r])+d+1,e),0!==(s=k[i])&&N(t,r-=E[i],s),R(t,i=T(--n),a),0!==(s=z[i])&&N(t,n-=O[i],s)),h<t.last_lit;);R(t,b,e)}function Q(t,e){var a,n,r,i=e.dyn_tree,s=e.stat_desc.static_tree,h=e.stat_desc.has_stree,l=e.stat_desc.elems,o=-1;for(t.heap_len=0,t.heap_max=g,a=0;a<l;a++)0!==i[2*a]?(t.heap[++t.heap_len]=o=a,t.depth[a]=0):i[2*a+1]=0;for(;t.heap_len<2;)i[2*(r=t.heap[++t.heap_len]=o<2?++o:0)]=1,t.depth[r]=0,t.opt_len--,h&&(t.static_len-=s[2*r+1]);for(e.max_code=o,a=t.heap_len>>1;1<=a;a--)G(t,i,a);for(r=l;a=t.heap[1],t.heap[1]=t.heap[t.heap_len--],G(t,i,1),n=t.heap[1],t.heap[--t.heap_max]=a,t.heap[--t.heap_max]=n,i[2*r]=i[2*a]+i[2*n],t.depth[r]=(t.depth[a]>=t.depth[n]?t.depth[a]:t.depth[n])+1,i[2*a+1]=i[2*n+1]=r,t.heap[1]=r++,G(t,i,1),2<=t.heap_len;);t.heap[--t.heap_max]=t.heap[1],function(t,e){var 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4===n?(a=s.deflateEnd(this.strm),this.onEnd(a),this.ended=!0,a===_):2!==n||(this.onEnd(_),!(r.avail_out=0))},c.prototype.onData=function(t){this.chunks.push(t)},c.prototype.onEnd=function(t){t===_&&("string"===this.options.to?this.result=this.chunks.join(""):this.result=h.flattenChunks(this.chunks)),this.chunks=[],this.err=t,this.msg=this.strm.msg},a.Deflate=c,a.deflate=n,a.deflateRaw=function(t,e){return(e=e||{}).raw=!0,n(t,e)},a.gzip=function(t,e){return(e=e||{}).gzip=!0,n(t,e)}},{"./utils/common":1,"./utils/strings":2,"./zlib/deflate":5,"./zlib/messages":6,"./zlib/zstream":8}]},{},[])("/lib/deflate.js")}); diff --git a/school/node_modules/pako/dist/pako_inflate.js b/school/node_modules/pako/dist/pako_inflate.js deleted file mode 100644 index 4a2050d..0000000 --- a/school/node_modules/pako/dist/pako_inflate.js +++ /dev/null @@ -1,3300 +0,0 @@ -/* pako 1.0.11 nodeca/pako */(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.pako = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){ -'use strict'; - - -var TYPED_OK = (typeof Uint8Array !== 'undefined') && - (typeof Uint16Array !== 'undefined') && - (typeof Int32Array !== 'undefined'); - -function _has(obj, key) { - return Object.prototype.hasOwnProperty.call(obj, key); -} - -exports.assign = function (obj /*from1, from2, from3, ...*/) { - var sources = Array.prototype.slice.call(arguments, 1); - while (sources.length) { - var source = sources.shift(); - if (!source) { continue; } - - if (typeof source !== 'object') { - throw new TypeError(source + 'must be non-object'); - } - - for (var p in source) { - if (_has(source, p)) { - obj[p] = source[p]; - } - } - } - - return obj; -}; - - -// reduce buffer size, avoiding mem copy -exports.shrinkBuf = function (buf, size) { - if (buf.length === size) { return buf; } - if (buf.subarray) { return buf.subarray(0, size); } - buf.length = size; - return buf; -}; - - -var fnTyped = { - arraySet: function (dest, src, src_offs, len, dest_offs) { - if (src.subarray && dest.subarray) { - dest.set(src.subarray(src_offs, src_offs + len), dest_offs); - return; - } - // Fallback to ordinary array - for (var i = 0; i < len; i++) { - dest[dest_offs + i] = src[src_offs + i]; - } - }, - // Join array of chunks to single array. - flattenChunks: function (chunks) { - var i, l, len, pos, chunk, result; - - // calculate data length - len = 0; - for (i = 0, l = chunks.length; i < l; i++) { - len += chunks[i].length; - } - - // join chunks - result = new Uint8Array(len); - pos = 0; - for (i = 0, l = chunks.length; i < l; i++) { - chunk = chunks[i]; - result.set(chunk, pos); - pos += chunk.length; - } - - return result; - } -}; - -var fnUntyped = { - arraySet: function (dest, src, src_offs, len, dest_offs) { - for (var i = 0; i < len; i++) { - dest[dest_offs + i] = src[src_offs + i]; - } - }, - // Join array of chunks to single array. - flattenChunks: function (chunks) { - return [].concat.apply([], chunks); - } -}; - - -// Enable/Disable typed arrays use, for testing -// -exports.setTyped = function (on) { - if (on) { - exports.Buf8 = Uint8Array; - exports.Buf16 = Uint16Array; - exports.Buf32 = Int32Array; - exports.assign(exports, fnTyped); - } else { - exports.Buf8 = Array; - exports.Buf16 = Array; - exports.Buf32 = Array; - exports.assign(exports, fnUntyped); - } -}; - -exports.setTyped(TYPED_OK); - -},{}],2:[function(require,module,exports){ -// String encode/decode helpers -'use strict'; - - -var utils = require('./common'); - - -// Quick check if we can use fast array to bin string conversion -// -// - apply(Array) can fail on Android 2.2 -// - apply(Uint8Array) can fail on iOS 5.1 Safari -// -var STR_APPLY_OK = true; -var STR_APPLY_UIA_OK = true; - -try { String.fromCharCode.apply(null, [ 0 ]); } catch (__) { STR_APPLY_OK = false; } -try { String.fromCharCode.apply(null, new Uint8Array(1)); } catch (__) { STR_APPLY_UIA_OK = false; } - - -// Table with utf8 lengths (calculated by first byte of sequence) -// Note, that 5 & 6-byte values and some 4-byte values can not be represented in JS, -// because max possible codepoint is 0x10ffff -var _utf8len = new utils.Buf8(256); -for (var q = 0; q < 256; q++) { - _utf8len[q] = (q >= 252 ? 6 : q >= 248 ? 5 : q >= 240 ? 4 : q >= 224 ? 3 : q >= 192 ? 2 : 1); -} -_utf8len[254] = _utf8len[254] = 1; // Invalid sequence start - - -// convert string to array (typed, when possible) -exports.string2buf = function (str) { - var buf, c, c2, m_pos, i, str_len = str.length, buf_len = 0; - - // count binary size - for (m_pos = 0; m_pos < str_len; m_pos++) { - c = str.charCodeAt(m_pos); - if ((c & 0xfc00) === 0xd800 && (m_pos + 1 < str_len)) { - c2 = str.charCodeAt(m_pos + 1); - if ((c2 & 0xfc00) === 0xdc00) { - c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00); - m_pos++; - } - } - buf_len += c < 0x80 ? 1 : c < 0x800 ? 2 : c < 0x10000 ? 3 : 4; - } - - // allocate buffer - buf = new utils.Buf8(buf_len); - - // convert - for (i = 0, m_pos = 0; i < buf_len; m_pos++) { - c = str.charCodeAt(m_pos); - if ((c & 0xfc00) === 0xd800 && (m_pos + 1 < str_len)) { - c2 = str.charCodeAt(m_pos + 1); - if ((c2 & 0xfc00) === 0xdc00) { - c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00); - m_pos++; - } - } - if (c < 0x80) { - /* one byte */ - buf[i++] = c; - } else if (c < 0x800) { - /* two bytes */ - buf[i++] = 0xC0 | (c >>> 6); - buf[i++] = 0x80 | (c & 0x3f); - } else if (c < 0x10000) { - /* three bytes */ - buf[i++] = 0xE0 | (c >>> 12); - buf[i++] = 0x80 | (c >>> 6 & 0x3f); - buf[i++] = 0x80 | (c & 0x3f); - } else { - /* four bytes */ - buf[i++] = 0xf0 | (c >>> 18); - buf[i++] = 0x80 | (c >>> 12 & 0x3f); - buf[i++] = 0x80 | (c >>> 6 & 0x3f); - buf[i++] = 0x80 | (c & 0x3f); - } - } - - return buf; -}; - -// Helper (used in 2 places) -function buf2binstring(buf, len) { - // On Chrome, the arguments in a function call that are allowed is `65534`. - // If the length of the buffer is smaller than that, we can use this optimization, - // otherwise we will take a slower path. - if (len < 65534) { - if ((buf.subarray && STR_APPLY_UIA_OK) || (!buf.subarray && STR_APPLY_OK)) { - return String.fromCharCode.apply(null, utils.shrinkBuf(buf, len)); - } - } - - var result = ''; - for (var i = 0; i < len; i++) { - result += String.fromCharCode(buf[i]); - } - return result; -} - - -// Convert byte array to binary string -exports.buf2binstring = function (buf) { - return buf2binstring(buf, buf.length); -}; - - -// Convert binary string (typed, when possible) -exports.binstring2buf = function (str) { - var buf = new utils.Buf8(str.length); - for (var i = 0, len = buf.length; i < len; i++) { - buf[i] = str.charCodeAt(i); - } - return buf; -}; - - -// convert array to string -exports.buf2string = function (buf, max) { - var i, out, c, c_len; - var len = max || buf.length; - - // Reserve max possible length (2 words per char) - // NB: by unknown reasons, Array is significantly faster for - // String.fromCharCode.apply than Uint16Array. - var utf16buf = new Array(len * 2); - - for (out = 0, i = 0; i < len;) { - c = buf[i++]; - // quick process ascii - if (c < 0x80) { utf16buf[out++] = c; continue; } - - c_len = _utf8len[c]; - // skip 5 & 6 byte codes - if (c_len > 4) { utf16buf[out++] = 0xfffd; i += c_len - 1; continue; } - - // apply mask on first byte - c &= c_len === 2 ? 0x1f : c_len === 3 ? 0x0f : 0x07; - // join the rest - while (c_len > 1 && i < len) { - c = (c << 6) | (buf[i++] & 0x3f); - c_len--; - } - - // terminated by end of string? - if (c_len > 1) { utf16buf[out++] = 0xfffd; continue; } - - if (c < 0x10000) { - utf16buf[out++] = c; - } else { - c -= 0x10000; - utf16buf[out++] = 0xd800 | ((c >> 10) & 0x3ff); - utf16buf[out++] = 0xdc00 | (c & 0x3ff); - } - } - - return buf2binstring(utf16buf, out); -}; - - -// Calculate max possible position in utf8 buffer, -// that will not break sequence. If that's not possible -// - (very small limits) return max size as is. -// -// buf[] - utf8 bytes array -// max - length limit (mandatory); -exports.utf8border = function (buf, max) { - var pos; - - max = max || buf.length; - if (max > buf.length) { max = buf.length; } - - // go back from last position, until start of sequence found - pos = max - 1; - while (pos >= 0 && (buf[pos] & 0xC0) === 0x80) { pos--; } - - // Very small and broken sequence, - // return max, because we should return something anyway. - if (pos < 0) { return max; } - - // If we came to start of buffer - that means buffer is too small, - // return max too. - if (pos === 0) { return max; } - - return (pos + _utf8len[buf[pos]] > max) ? pos : max; -}; - -},{"./common":1}],3:[function(require,module,exports){ -'use strict'; - -// Note: adler32 takes 12% for level 0 and 2% for level 6. -// It isn't worth it to make additional optimizations as in original. -// Small size is preferable. - -// (C) 1995-2013 Jean-loup Gailly and Mark Adler -// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would be -// appreciated but is not required. -// 2. Altered source versions must be plainly marked as such, and must not be -// misrepresented as being the original software. -// 3. This notice may not be removed or altered from any source distribution. - -function adler32(adler, buf, len, pos) { - var s1 = (adler & 0xffff) |0, - s2 = ((adler >>> 16) & 0xffff) |0, - n = 0; - - while (len !== 0) { - // Set limit ~ twice less than 5552, to keep - // s2 in 31-bits, because we force signed ints. - // in other case %= will fail. - n = len > 2000 ? 2000 : len; - len -= n; - - do { - s1 = (s1 + buf[pos++]) |0; - s2 = (s2 + s1) |0; - } while (--n); - - s1 %= 65521; - s2 %= 65521; - } - - return (s1 | (s2 << 16)) |0; -} - - -module.exports = adler32; - -},{}],4:[function(require,module,exports){ -'use strict'; - -// (C) 1995-2013 Jean-loup Gailly and Mark Adler -// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would be -// appreciated but is not required. -// 2. Altered source versions must be plainly marked as such, and must not be -// misrepresented as being the original software. -// 3. This notice may not be removed or altered from any source distribution. - -module.exports = { - - /* Allowed flush values; see deflate() and inflate() below for details */ - Z_NO_FLUSH: 0, - Z_PARTIAL_FLUSH: 1, - Z_SYNC_FLUSH: 2, - Z_FULL_FLUSH: 3, - Z_FINISH: 4, - Z_BLOCK: 5, - Z_TREES: 6, - - /* Return codes for the compression/decompression functions. Negative values - * are errors, positive values are used for special but normal events. - */ - Z_OK: 0, - Z_STREAM_END: 1, - Z_NEED_DICT: 2, - Z_ERRNO: -1, - Z_STREAM_ERROR: -2, - Z_DATA_ERROR: -3, - //Z_MEM_ERROR: -4, - Z_BUF_ERROR: -5, - //Z_VERSION_ERROR: -6, - - /* compression levels */ - Z_NO_COMPRESSION: 0, - Z_BEST_SPEED: 1, - Z_BEST_COMPRESSION: 9, - Z_DEFAULT_COMPRESSION: -1, - - - Z_FILTERED: 1, - Z_HUFFMAN_ONLY: 2, - Z_RLE: 3, - Z_FIXED: 4, - Z_DEFAULT_STRATEGY: 0, - - /* Possible values of the data_type field (though see inflate()) */ - Z_BINARY: 0, - Z_TEXT: 1, - //Z_ASCII: 1, // = Z_TEXT (deprecated) - Z_UNKNOWN: 2, - - /* The deflate compression method */ - Z_DEFLATED: 8 - //Z_NULL: null // Use -1 or null inline, depending on var type -}; - -},{}],5:[function(require,module,exports){ -'use strict'; - -// Note: we can't get significant speed boost here. -// So write code to minimize size - no pregenerated tables -// and array tools dependencies. - -// (C) 1995-2013 Jean-loup Gailly and Mark Adler -// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would be -// appreciated but is not required. -// 2. Altered source versions must be plainly marked as such, and must not be -// misrepresented as being the original software. -// 3. This notice may not be removed or altered from any source distribution. - -// Use ordinary array, since untyped makes no boost here -function makeTable() { - var c, table = []; - - for (var n = 0; n < 256; n++) { - c = n; - for (var k = 0; k < 8; k++) { - c = ((c & 1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1)); - } - table[n] = c; - } - - return table; -} - -// Create table on load. Just 255 signed longs. Not a problem. -var crcTable = makeTable(); - - -function crc32(crc, buf, len, pos) { - var t = crcTable, - end = pos + len; - - crc ^= -1; - - for (var i = pos; i < end; i++) { - crc = (crc >>> 8) ^ t[(crc ^ buf[i]) & 0xFF]; - } - - return (crc ^ (-1)); // >>> 0; -} - - -module.exports = crc32; - -},{}],6:[function(require,module,exports){ -'use strict'; - -// (C) 1995-2013 Jean-loup Gailly and Mark Adler -// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would be -// appreciated but is not required. -// 2. Altered source versions must be plainly marked as such, and must not be -// misrepresented as being the original software. -// 3. This notice may not be removed or altered from any source distribution. - -function GZheader() { - /* true if compressed data believed to be text */ - this.text = 0; - /* modification time */ - this.time = 0; - /* extra flags (not used when writing a gzip file) */ - this.xflags = 0; - /* operating system */ - this.os = 0; - /* pointer to extra field or Z_NULL if none */ - this.extra = null; - /* extra field length (valid if extra != Z_NULL) */ - this.extra_len = 0; // Actually, we don't need it in JS, - // but leave for few code modifications - - // - // Setup limits is not necessary because in js we should not preallocate memory - // for inflate use constant limit in 65536 bytes - // - - /* space at extra (only when reading header) */ - // this.extra_max = 0; - /* pointer to zero-terminated file name or Z_NULL */ - this.name = ''; - /* space at name (only when reading header) */ - // this.name_max = 0; - /* pointer to zero-terminated comment or Z_NULL */ - this.comment = ''; - /* space at comment (only when reading header) */ - // this.comm_max = 0; - /* true if there was or will be a header crc */ - this.hcrc = 0; - /* true when done reading gzip header (not used when writing a gzip file) */ - this.done = false; -} - -module.exports = GZheader; - -},{}],7:[function(require,module,exports){ -'use strict'; - -// (C) 1995-2013 Jean-loup Gailly and Mark Adler -// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would be -// appreciated but is not required. -// 2. Altered source versions must be plainly marked as such, and must not be -// misrepresented as being the original software. -// 3. This notice may not be removed or altered from any source distribution. - -// See state defs from inflate.js -var BAD = 30; /* got a data error -- remain here until reset */ -var TYPE = 12; /* i: waiting for type bits, including last-flag bit */ - -/* - Decode literal, length, and distance codes and write out the resulting - literal and match bytes until either not enough input or output is - available, an end-of-block is encountered, or a data error is encountered. - When large enough input and output buffers are supplied to inflate(), for - example, a 16K input buffer and a 64K output buffer, more than 95% of the - inflate execution time is spent in this routine. - - Entry assumptions: - - state.mode === LEN - strm.avail_in >= 6 - strm.avail_out >= 258 - start >= strm.avail_out - state.bits < 8 - - On return, state.mode is one of: - - LEN -- ran out of enough output space or enough available input - TYPE -- reached end of block code, inflate() to interpret next block - BAD -- error in block data - - Notes: - - - The maximum input bits used by a length/distance pair is 15 bits for the - length code, 5 bits for the length extra, 15 bits for the distance code, - and 13 bits for the distance extra. This totals 48 bits, or six bytes. - Therefore if strm.avail_in >= 6, then there is enough input to avoid - checking for available input while decoding. - - - The maximum bytes that a single length/distance pair can output is 258 - bytes, which is the maximum length that can be coded. inflate_fast() - requires strm.avail_out >= 258 for each loop to avoid checking for - output space. - */ -module.exports = function inflate_fast(strm, start) { - var state; - var _in; /* local strm.input */ - var last; /* have enough input while in < last */ - var _out; /* local strm.output */ - var beg; /* inflate()'s initial strm.output */ - var end; /* while out < end, enough space available */ -//#ifdef INFLATE_STRICT - var dmax; /* maximum distance from zlib header */ -//#endif - var wsize; /* window size or zero if not using window */ - var whave; /* valid bytes in the window */ - var wnext; /* window write index */ - // Use `s_window` instead `window`, avoid conflict with instrumentation tools - var s_window; /* allocated sliding window, if wsize != 0 */ - var hold; /* local strm.hold */ - var bits; /* local strm.bits */ - var lcode; /* local strm.lencode */ - var dcode; /* local strm.distcode */ - var lmask; /* mask for first level of length codes */ - var dmask; /* mask for first level of distance codes */ - var here; /* retrieved table entry */ - var op; /* code bits, operation, extra bits, or */ - /* window position, window bytes to copy */ - var len; /* match length, unused bytes */ - var dist; /* match distance */ - var from; /* where to copy match from */ - var from_source; - - - var input, output; // JS specific, because we have no pointers - - /* copy state to local variables */ - state = strm.state; - //here = state.here; - _in = strm.next_in; - input = strm.input; - last = _in + (strm.avail_in - 5); - _out = strm.next_out; - output = strm.output; - beg = _out - (start - strm.avail_out); - end = _out + (strm.avail_out - 257); -//#ifdef INFLATE_STRICT - dmax = state.dmax; -//#endif - wsize = state.wsize; - whave = state.whave; - wnext = state.wnext; - s_window = state.window; - hold = state.hold; - bits = state.bits; - lcode = state.lencode; - dcode = state.distcode; - lmask = (1 << state.lenbits) - 1; - dmask = (1 << state.distbits) - 1; - - - /* decode literals and length/distances until end-of-block or not enough - input data or output space */ - - top: - do { - if (bits < 15) { - hold += input[_in++] << bits; - bits += 8; - hold += input[_in++] << bits; - bits += 8; - } - - here = lcode[hold & lmask]; - - dolen: - for (;;) { // Goto emulation - op = here >>> 24/*here.bits*/; - hold >>>= op; - bits -= op; - op = (here >>> 16) & 0xff/*here.op*/; - if (op === 0) { /* literal */ - //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ? - // "inflate: literal '%c'\n" : - // "inflate: literal 0x%02x\n", here.val)); - output[_out++] = here & 0xffff/*here.val*/; - } - else if (op & 16) { /* length base */ - len = here & 0xffff/*here.val*/; - op &= 15; /* number of extra bits */ - if (op) { - if (bits < op) { - hold += input[_in++] << bits; - bits += 8; - } - len += hold & ((1 << op) - 1); - hold >>>= op; - bits -= op; - } - //Tracevv((stderr, "inflate: length %u\n", len)); - if (bits < 15) { - hold += input[_in++] << bits; - bits += 8; - hold += input[_in++] << bits; - bits += 8; - } - here = dcode[hold & dmask]; - - dodist: - for (;;) { // goto emulation - op = here >>> 24/*here.bits*/; - hold >>>= op; - bits -= op; - op = (here >>> 16) & 0xff/*here.op*/; - - if (op & 16) { /* distance base */ - dist = here & 0xffff/*here.val*/; - op &= 15; /* number of extra bits */ - if (bits < op) { - hold += input[_in++] << bits; - bits += 8; - if (bits < op) { - hold += input[_in++] << bits; - bits += 8; - } - } - dist += hold & ((1 << op) - 1); -//#ifdef INFLATE_STRICT - if (dist > dmax) { - strm.msg = 'invalid distance too far back'; - state.mode = BAD; - break top; - } -//#endif - hold >>>= op; - bits -= op; - //Tracevv((stderr, "inflate: distance %u\n", dist)); - op = _out - beg; /* max distance in output */ - if (dist > op) { /* see if copy from window */ - op = dist - op; /* distance back in window */ - if (op > whave) { - if (state.sane) { - strm.msg = 'invalid distance too far back'; - state.mode = BAD; - break top; - } - -// (!) This block is disabled in zlib defaults, -// don't enable it for binary compatibility -//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR -// if (len <= op - whave) { -// do { -// output[_out++] = 0; -// } while (--len); -// continue top; -// } -// len -= op - whave; -// do { -// output[_out++] = 0; -// } while (--op > whave); -// if (op === 0) { -// from = _out - dist; -// do { -// output[_out++] = output[from++]; -// } while (--len); -// continue top; -// } -//#endif - } - from = 0; // window index - from_source = s_window; - if (wnext === 0) { /* very common case */ - from += wsize - op; - if (op < len) { /* some from window */ - len -= op; - do { - output[_out++] = s_window[from++]; - } while (--op); - from = _out - dist; /* rest from output */ - from_source = output; - } - } - else if (wnext < op) { /* wrap around window */ - from += wsize + wnext - op; - op -= wnext; - if (op < len) { /* some from end of window */ - len -= op; - do { - output[_out++] = s_window[from++]; - } while (--op); - from = 0; - if (wnext < len) { /* some from start of window */ - op = wnext; - len -= op; - do { - output[_out++] = s_window[from++]; - } while (--op); - from = _out - dist; /* rest from output */ - from_source = output; - } - } - } - else { /* contiguous in window */ - from += wnext - op; - if (op < len) { /* some from window */ - len -= op; - do { - output[_out++] = s_window[from++]; - } while (--op); - from = _out - dist; /* rest from output */ - from_source = output; - } - } - while (len > 2) { - output[_out++] = from_source[from++]; - output[_out++] = from_source[from++]; - output[_out++] = from_source[from++]; - len -= 3; - } - if (len) { - output[_out++] = from_source[from++]; - if (len > 1) { - output[_out++] = from_source[from++]; - } - } - } - else { - from = _out - dist; /* copy direct from output */ - do { /* minimum length is three */ - output[_out++] = output[from++]; - output[_out++] = output[from++]; - output[_out++] = output[from++]; - len -= 3; - } while (len > 2); - if (len) { - output[_out++] = output[from++]; - if (len > 1) { - output[_out++] = output[from++]; - } - } - } - } - else if ((op & 64) === 0) { /* 2nd level distance code */ - here = dcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))]; - continue dodist; - } - else { - strm.msg = 'invalid distance code'; - state.mode = BAD; - break top; - } - - break; // need to emulate goto via "continue" - } - } - else if ((op & 64) === 0) { /* 2nd level length code */ - here = lcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))]; - continue dolen; - } - else if (op & 32) { /* end-of-block */ - //Tracevv((stderr, "inflate: end of block\n")); - state.mode = TYPE; - break top; - } - else { - strm.msg = 'invalid literal/length code'; - state.mode = BAD; - break top; - } - - break; // need to emulate goto via "continue" - } - } while (_in < last && _out < end); - - /* return unused bytes (on entry, bits < 8, so in won't go too far back) */ - len = bits >> 3; - _in -= len; - bits -= len << 3; - hold &= (1 << bits) - 1; - - /* update state and return */ - strm.next_in = _in; - strm.next_out = _out; - strm.avail_in = (_in < last ? 5 + (last - _in) : 5 - (_in - last)); - strm.avail_out = (_out < end ? 257 + (end - _out) : 257 - (_out - end)); - state.hold = hold; - state.bits = bits; - return; -}; - -},{}],8:[function(require,module,exports){ -'use strict'; - -// (C) 1995-2013 Jean-loup Gailly and Mark Adler -// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would be -// appreciated but is not required. -// 2. Altered source versions must be plainly marked as such, and must not be -// misrepresented as being the original software. -// 3. This notice may not be removed or altered from any source distribution. - -var utils = require('../utils/common'); -var adler32 = require('./adler32'); -var crc32 = require('./crc32'); -var inflate_fast = require('./inffast'); -var inflate_table = require('./inftrees'); - -var CODES = 0; -var LENS = 1; -var DISTS = 2; - -/* Public constants ==========================================================*/ -/* ===========================================================================*/ - - -/* Allowed flush values; see deflate() and inflate() below for details */ -//var Z_NO_FLUSH = 0; -//var Z_PARTIAL_FLUSH = 1; -//var Z_SYNC_FLUSH = 2; -//var Z_FULL_FLUSH = 3; -var Z_FINISH = 4; -var Z_BLOCK = 5; -var Z_TREES = 6; - - -/* Return codes for the compression/decompression functions. Negative values - * are errors, positive values are used for special but normal events. - */ -var Z_OK = 0; -var Z_STREAM_END = 1; -var Z_NEED_DICT = 2; -//var Z_ERRNO = -1; -var Z_STREAM_ERROR = -2; -var Z_DATA_ERROR = -3; -var Z_MEM_ERROR = -4; -var Z_BUF_ERROR = -5; -//var Z_VERSION_ERROR = -6; - -/* The deflate compression method */ -var Z_DEFLATED = 8; - - -/* STATES ====================================================================*/ -/* ===========================================================================*/ - - -var HEAD = 1; /* i: waiting for magic header */ -var FLAGS = 2; /* i: waiting for method and flags (gzip) */ -var TIME = 3; /* i: waiting for modification time (gzip) */ -var OS = 4; /* i: waiting for extra flags and operating system (gzip) */ -var EXLEN = 5; /* i: waiting for extra length (gzip) */ -var EXTRA = 6; /* i: waiting for extra bytes (gzip) */ -var NAME = 7; /* i: waiting for end of file name (gzip) */ -var COMMENT = 8; /* i: waiting for end of comment (gzip) */ -var HCRC = 9; /* i: waiting for header crc (gzip) */ -var DICTID = 10; /* i: waiting for dictionary check value */ -var DICT = 11; /* waiting for inflateSetDictionary() call */ -var TYPE = 12; /* i: waiting for type bits, including last-flag bit */ -var TYPEDO = 13; /* i: same, but skip check to exit inflate on new block */ -var STORED = 14; /* i: waiting for stored size (length and complement) */ -var COPY_ = 15; /* i/o: same as COPY below, but only first time in */ -var COPY = 16; /* i/o: waiting for input or output to copy stored block */ -var TABLE = 17; /* i: waiting for dynamic block table lengths */ -var LENLENS = 18; /* i: waiting for code length code lengths */ -var CODELENS = 19; /* i: waiting for length/lit and distance code lengths */ -var LEN_ = 20; /* i: same as LEN below, but only first time in */ -var LEN = 21; /* i: waiting for length/lit/eob code */ -var LENEXT = 22; /* i: waiting for length extra bits */ -var DIST = 23; /* i: waiting for distance code */ -var DISTEXT = 24; /* i: waiting for distance extra bits */ -var MATCH = 25; /* o: waiting for output space to copy string */ -var LIT = 26; /* o: waiting for output space to write literal */ -var CHECK = 27; /* i: waiting for 32-bit check value */ -var LENGTH = 28; /* i: waiting for 32-bit length (gzip) */ -var DONE = 29; /* finished check, done -- remain here until reset */ -var BAD = 30; /* got a data error -- remain here until reset */ -var MEM = 31; /* got an inflate() memory error -- remain here until reset */ -var SYNC = 32; /* looking for synchronization bytes to restart inflate() */ - -/* ===========================================================================*/ - - - -var ENOUGH_LENS = 852; -var ENOUGH_DISTS = 592; -//var ENOUGH = (ENOUGH_LENS+ENOUGH_DISTS); - -var MAX_WBITS = 15; -/* 32K LZ77 window */ -var DEF_WBITS = MAX_WBITS; - - -function zswap32(q) { - return (((q >>> 24) & 0xff) + - ((q >>> 8) & 0xff00) + - ((q & 0xff00) << 8) + - ((q & 0xff) << 24)); -} - - -function InflateState() { - this.mode = 0; /* current inflate mode */ - this.last = false; /* true if processing last block */ - this.wrap = 0; /* bit 0 true for zlib, bit 1 true for gzip */ - this.havedict = false; /* true if dictionary provided */ - this.flags = 0; /* gzip header method and flags (0 if zlib) */ - this.dmax = 0; /* zlib header max distance (INFLATE_STRICT) */ - this.check = 0; /* protected copy of check value */ - this.total = 0; /* protected copy of output count */ - // TODO: may be {} - this.head = null; /* where to save gzip header information */ - - /* sliding window */ - this.wbits = 0; /* log base 2 of requested window size */ - this.wsize = 0; /* window size or zero if not using window */ - this.whave = 0; /* valid bytes in the window */ - this.wnext = 0; /* window write index */ - this.window = null; /* allocated sliding window, if needed */ - - /* bit accumulator */ - this.hold = 0; /* input bit accumulator */ - this.bits = 0; /* number of bits in "in" */ - - /* for string and stored block copying */ - this.length = 0; /* literal or length of data to copy */ - this.offset = 0; /* distance back to copy string from */ - - /* for table and code decoding */ - this.extra = 0; /* extra bits needed */ - - /* fixed and dynamic code tables */ - this.lencode = null; /* starting table for length/literal codes */ - this.distcode = null; /* starting table for distance codes */ - this.lenbits = 0; /* index bits for lencode */ - this.distbits = 0; /* index bits for distcode */ - - /* dynamic table building */ - this.ncode = 0; /* number of code length code lengths */ - this.nlen = 0; /* number of length code lengths */ - this.ndist = 0; /* number of distance code lengths */ - this.have = 0; /* number of code lengths in lens[] */ - this.next = null; /* next available space in codes[] */ - - this.lens = new utils.Buf16(320); /* temporary storage for code lengths */ - this.work = new utils.Buf16(288); /* work area for code table building */ - - /* - because we don't have pointers in js, we use lencode and distcode directly - as buffers so we don't need codes - */ - //this.codes = new utils.Buf32(ENOUGH); /* space for code tables */ - this.lendyn = null; /* dynamic table for length/literal codes (JS specific) */ - this.distdyn = null; /* dynamic table for distance codes (JS specific) */ - this.sane = 0; /* if false, allow invalid distance too far */ - this.back = 0; /* bits back of last unprocessed length/lit */ - this.was = 0; /* initial length of match */ -} - -function inflateResetKeep(strm) { - var state; - - if (!strm || !strm.state) { return Z_STREAM_ERROR; } - state = strm.state; - strm.total_in = strm.total_out = state.total = 0; - strm.msg = ''; /*Z_NULL*/ - if (state.wrap) { /* to support ill-conceived Java test suite */ - strm.adler = state.wrap & 1; - } - state.mode = HEAD; - state.last = 0; - state.havedict = 0; - state.dmax = 32768; - state.head = null/*Z_NULL*/; - state.hold = 0; - state.bits = 0; - //state.lencode = state.distcode = state.next = state.codes; - state.lencode = state.lendyn = new utils.Buf32(ENOUGH_LENS); - state.distcode = state.distdyn = new utils.Buf32(ENOUGH_DISTS); - - state.sane = 1; - state.back = -1; - //Tracev((stderr, "inflate: reset\n")); - return Z_OK; -} - -function inflateReset(strm) { - var state; - - if (!strm || !strm.state) { return Z_STREAM_ERROR; } - state = strm.state; - state.wsize = 0; - state.whave = 0; - state.wnext = 0; - return inflateResetKeep(strm); - -} - -function inflateReset2(strm, windowBits) { - var wrap; - var state; - - /* get the state */ - if (!strm || !strm.state) { return Z_STREAM_ERROR; } - state = strm.state; - - /* extract wrap request from windowBits parameter */ - if (windowBits < 0) { - wrap = 0; - windowBits = -windowBits; - } - else { - wrap = (windowBits >> 4) + 1; - if (windowBits < 48) { - windowBits &= 15; - } - } - - /* set number of window bits, free window if different */ - if (windowBits && (windowBits < 8 || windowBits > 15)) { - return Z_STREAM_ERROR; - } - if (state.window !== null && state.wbits !== windowBits) { - state.window = null; - } - - /* update state and reset the rest of it */ - state.wrap = wrap; - state.wbits = windowBits; - return inflateReset(strm); -} - -function inflateInit2(strm, windowBits) { - var ret; - var state; - - if (!strm) { return Z_STREAM_ERROR; } - //strm.msg = Z_NULL; /* in case we return an error */ - - state = new InflateState(); - - //if (state === Z_NULL) return Z_MEM_ERROR; - //Tracev((stderr, "inflate: allocated\n")); - strm.state = state; - state.window = null/*Z_NULL*/; - ret = inflateReset2(strm, windowBits); - if (ret !== Z_OK) { - strm.state = null/*Z_NULL*/; - } - return ret; -} - -function inflateInit(strm) { - return inflateInit2(strm, DEF_WBITS); -} - - -/* - Return state with length and distance decoding tables and index sizes set to - fixed code decoding. Normally this returns fixed tables from inffixed.h. - If BUILDFIXED is defined, then instead this routine builds the tables the - first time it's called, and returns those tables the first time and - thereafter. This reduces the size of the code by about 2K bytes, in - exchange for a little execution time. However, BUILDFIXED should not be - used for threaded applications, since the rewriting of the tables and virgin - may not be thread-safe. - */ -var virgin = true; - -var lenfix, distfix; // We have no pointers in JS, so keep tables separate - -function fixedtables(state) { - /* build fixed huffman tables if first call (may not be thread safe) */ - if (virgin) { - var sym; - - lenfix = new utils.Buf32(512); - distfix = new utils.Buf32(32); - - /* literal/length table */ - sym = 0; - while (sym < 144) { state.lens[sym++] = 8; } - while (sym < 256) { state.lens[sym++] = 9; } - while (sym < 280) { state.lens[sym++] = 7; } - while (sym < 288) { state.lens[sym++] = 8; } - - inflate_table(LENS, state.lens, 0, 288, lenfix, 0, state.work, { bits: 9 }); - - /* distance table */ - sym = 0; - while (sym < 32) { state.lens[sym++] = 5; } - - inflate_table(DISTS, state.lens, 0, 32, distfix, 0, state.work, { bits: 5 }); - - /* do this just once */ - virgin = false; - } - - state.lencode = lenfix; - state.lenbits = 9; - state.distcode = distfix; - state.distbits = 5; -} - - -/* - Update the window with the last wsize (normally 32K) bytes written before - returning. If window does not exist yet, create it. This is only called - when a window is already in use, or when output has been written during this - inflate call, but the end of the deflate stream has not been reached yet. - It is also called to create a window for dictionary data when a dictionary - is loaded. - - Providing output buffers larger than 32K to inflate() should provide a speed - advantage, since only the last 32K of output is copied to the sliding window - upon return from inflate(), and since all distances after the first 32K of - output will fall in the output data, making match copies simpler and faster. - The advantage may be dependent on the size of the processor's data caches. - */ -function updatewindow(strm, src, end, copy) { - var dist; - var state = strm.state; - - /* if it hasn't been done already, allocate space for the window */ - if (state.window === null) { - state.wsize = 1 << state.wbits; - state.wnext = 0; - state.whave = 0; - - state.window = new utils.Buf8(state.wsize); - } - - /* copy state->wsize or less output bytes into the circular window */ - if (copy >= state.wsize) { - utils.arraySet(state.window, src, end - state.wsize, state.wsize, 0); - state.wnext = 0; - state.whave = state.wsize; - } - else { - dist = state.wsize - state.wnext; - if (dist > copy) { - dist = copy; - } - //zmemcpy(state->window + state->wnext, end - copy, dist); - utils.arraySet(state.window, src, end - copy, dist, state.wnext); - copy -= dist; - if (copy) { - //zmemcpy(state->window, end - copy, copy); - utils.arraySet(state.window, src, end - copy, copy, 0); - state.wnext = copy; - state.whave = state.wsize; - } - else { - state.wnext += dist; - if (state.wnext === state.wsize) { state.wnext = 0; } - if (state.whave < state.wsize) { state.whave += dist; } - } - } - return 0; -} - -function inflate(strm, flush) { - var state; - var input, output; // input/output buffers - var next; /* next input INDEX */ - var put; /* next output INDEX */ - var have, left; /* available input and output */ - var hold; /* bit buffer */ - var bits; /* bits in bit buffer */ - var _in, _out; /* save starting available input and output */ - var copy; /* number of stored or match bytes to copy */ - var from; /* where to copy match bytes from */ - var from_source; - var here = 0; /* current decoding table entry */ - var here_bits, here_op, here_val; // paked "here" denormalized (JS specific) - //var last; /* parent table entry */ - var last_bits, last_op, last_val; // paked "last" denormalized (JS specific) - var len; /* length to copy for repeats, bits to drop */ - var ret; /* return code */ - var hbuf = new utils.Buf8(4); /* buffer for gzip header crc calculation */ - var opts; - - var n; // temporary var for NEED_BITS - - var order = /* permutation of code lengths */ - [ 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 ]; - - - if (!strm || !strm.state || !strm.output || - (!strm.input && strm.avail_in !== 0)) { - return Z_STREAM_ERROR; - } - - state = strm.state; - if (state.mode === TYPE) { state.mode = TYPEDO; } /* skip check */ - - - //--- LOAD() --- - put = strm.next_out; - output = strm.output; - left = strm.avail_out; - next = strm.next_in; - input = strm.input; - have = strm.avail_in; - hold = state.hold; - bits = state.bits; - //--- - - _in = have; - _out = left; - ret = Z_OK; - - inf_leave: // goto emulation - for (;;) { - switch (state.mode) { - case HEAD: - if (state.wrap === 0) { - state.mode = TYPEDO; - break; - } - //=== NEEDBITS(16); - while (bits < 16) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - if ((state.wrap & 2) && hold === 0x8b1f) { /* gzip header */ - state.check = 0/*crc32(0L, Z_NULL, 0)*/; - //=== CRC2(state.check, hold); - hbuf[0] = hold & 0xff; - hbuf[1] = (hold >>> 8) & 0xff; - state.check = crc32(state.check, hbuf, 2, 0); - //===// - - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - state.mode = FLAGS; - break; - } - state.flags = 0; /* expect zlib header */ - if (state.head) { - state.head.done = false; - } - if (!(state.wrap & 1) || /* check if zlib header allowed */ - (((hold & 0xff)/*BITS(8)*/ << 8) + (hold >> 8)) % 31) { - strm.msg = 'incorrect header check'; - state.mode = BAD; - break; - } - if ((hold & 0x0f)/*BITS(4)*/ !== Z_DEFLATED) { - strm.msg = 'unknown compression method'; - state.mode = BAD; - break; - } - //--- DROPBITS(4) ---// - hold >>>= 4; - bits -= 4; - //---// - len = (hold & 0x0f)/*BITS(4)*/ + 8; - if (state.wbits === 0) { - state.wbits = len; - } - else if (len > state.wbits) { - strm.msg = 'invalid window size'; - state.mode = BAD; - break; - } - state.dmax = 1 << len; - //Tracev((stderr, "inflate: zlib header ok\n")); - strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/; - state.mode = hold & 0x200 ? DICTID : TYPE; - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - break; - case FLAGS: - //=== NEEDBITS(16); */ - while (bits < 16) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - state.flags = hold; - if ((state.flags & 0xff) !== Z_DEFLATED) { - strm.msg = 'unknown compression method'; - state.mode = BAD; - break; - } - if (state.flags & 0xe000) { - strm.msg = 'unknown header flags set'; - state.mode = BAD; - break; - } - if (state.head) { - state.head.text = ((hold >> 8) & 1); - } - if (state.flags & 0x0200) { - //=== CRC2(state.check, hold); - hbuf[0] = hold & 0xff; - hbuf[1] = (hold >>> 8) & 0xff; - state.check = crc32(state.check, hbuf, 2, 0); - //===// - } - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - state.mode = TIME; - /* falls through */ - case TIME: - //=== NEEDBITS(32); */ - while (bits < 32) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - if (state.head) { - state.head.time = hold; - } - if (state.flags & 0x0200) { - //=== CRC4(state.check, hold) - hbuf[0] = hold & 0xff; - hbuf[1] = (hold >>> 8) & 0xff; - hbuf[2] = (hold >>> 16) & 0xff; - hbuf[3] = (hold >>> 24) & 0xff; - state.check = crc32(state.check, hbuf, 4, 0); - //=== - } - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - state.mode = OS; - /* falls through */ - case OS: - //=== NEEDBITS(16); */ - while (bits < 16) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - if (state.head) { - state.head.xflags = (hold & 0xff); - state.head.os = (hold >> 8); - } - if (state.flags & 0x0200) { - //=== CRC2(state.check, hold); - hbuf[0] = hold & 0xff; - hbuf[1] = (hold >>> 8) & 0xff; - state.check = crc32(state.check, hbuf, 2, 0); - //===// - } - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - state.mode = EXLEN; - /* falls through */ - case EXLEN: - if (state.flags & 0x0400) { - //=== NEEDBITS(16); */ - while (bits < 16) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - state.length = hold; - if (state.head) { - state.head.extra_len = hold; - } - if (state.flags & 0x0200) { - //=== CRC2(state.check, hold); - hbuf[0] = hold & 0xff; - hbuf[1] = (hold >>> 8) & 0xff; - state.check = crc32(state.check, hbuf, 2, 0); - //===// - } - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - } - else if (state.head) { - state.head.extra = null/*Z_NULL*/; - } - state.mode = EXTRA; - /* falls through */ - case EXTRA: - if (state.flags & 0x0400) { - copy = state.length; - if (copy > have) { copy = have; } - if (copy) { - if (state.head) { - len = state.head.extra_len - state.length; - if (!state.head.extra) { - // Use untyped array for more convenient processing later - state.head.extra = new Array(state.head.extra_len); - } - utils.arraySet( - state.head.extra, - input, - next, - // extra field is limited to 65536 bytes - // - no need for additional size check - copy, - /*len + copy > state.head.extra_max - len ? state.head.extra_max : copy,*/ - len - ); - //zmemcpy(state.head.extra + len, next, - // len + copy > state.head.extra_max ? - // state.head.extra_max - len : copy); - } - if (state.flags & 0x0200) { - state.check = crc32(state.check, input, copy, next); - } - have -= copy; - next += copy; - state.length -= copy; - } - if (state.length) { break inf_leave; } - } - state.length = 0; - state.mode = NAME; - /* falls through */ - case NAME: - if (state.flags & 0x0800) { - if (have === 0) { break inf_leave; } - copy = 0; - do { - // TODO: 2 or 1 bytes? - len = input[next + copy++]; - /* use constant limit because in js we should not preallocate memory */ - if (state.head && len && - (state.length < 65536 /*state.head.name_max*/)) { - state.head.name += String.fromCharCode(len); - } - } while (len && copy < have); - - if (state.flags & 0x0200) { - state.check = crc32(state.check, input, copy, next); - } - have -= copy; - next += copy; - if (len) { break inf_leave; } - } - else if (state.head) { - state.head.name = null; - } - state.length = 0; - state.mode = COMMENT; - /* falls through */ - case COMMENT: - if (state.flags & 0x1000) { - if (have === 0) { break inf_leave; } - copy = 0; - do { - len = input[next + copy++]; - /* use constant limit because in js we should not preallocate memory */ - if (state.head && len && - (state.length < 65536 /*state.head.comm_max*/)) { - state.head.comment += String.fromCharCode(len); - } - } while (len && copy < have); - if (state.flags & 0x0200) { - state.check = crc32(state.check, input, copy, next); - } - have -= copy; - next += copy; - if (len) { break inf_leave; } - } - else if (state.head) { - state.head.comment = null; - } - state.mode = HCRC; - /* falls through */ - case HCRC: - if (state.flags & 0x0200) { - //=== NEEDBITS(16); */ - while (bits < 16) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - if (hold !== (state.check & 0xffff)) { - strm.msg = 'header crc mismatch'; - state.mode = BAD; - break; - } - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - } - if (state.head) { - state.head.hcrc = ((state.flags >> 9) & 1); - state.head.done = true; - } - strm.adler = state.check = 0; - state.mode = TYPE; - break; - case DICTID: - //=== NEEDBITS(32); */ - while (bits < 32) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - strm.adler = state.check = zswap32(hold); - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - state.mode = DICT; - /* falls through */ - case DICT: - if (state.havedict === 0) { - //--- RESTORE() --- - strm.next_out = put; - strm.avail_out = left; - strm.next_in = next; - strm.avail_in = have; - state.hold = hold; - state.bits = bits; - //--- - return Z_NEED_DICT; - } - strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/; - state.mode = TYPE; - /* falls through */ - case TYPE: - if (flush === Z_BLOCK || flush === Z_TREES) { break inf_leave; } - /* falls through */ - case TYPEDO: - if (state.last) { - //--- BYTEBITS() ---// - hold >>>= bits & 7; - bits -= bits & 7; - //---// - state.mode = CHECK; - break; - } - //=== NEEDBITS(3); */ - while (bits < 3) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - state.last = (hold & 0x01)/*BITS(1)*/; - //--- DROPBITS(1) ---// - hold >>>= 1; - bits -= 1; - //---// - - switch ((hold & 0x03)/*BITS(2)*/) { - case 0: /* stored block */ - //Tracev((stderr, "inflate: stored block%s\n", - // state.last ? " (last)" : "")); - state.mode = STORED; - break; - case 1: /* fixed block */ - fixedtables(state); - //Tracev((stderr, "inflate: fixed codes block%s\n", - // state.last ? " (last)" : "")); - state.mode = LEN_; /* decode codes */ - if (flush === Z_TREES) { - //--- DROPBITS(2) ---// - hold >>>= 2; - bits -= 2; - //---// - break inf_leave; - } - break; - case 2: /* dynamic block */ - //Tracev((stderr, "inflate: dynamic codes block%s\n", - // state.last ? " (last)" : "")); - state.mode = TABLE; - break; - case 3: - strm.msg = 'invalid block type'; - state.mode = BAD; - } - //--- DROPBITS(2) ---// - hold >>>= 2; - bits -= 2; - //---// - break; - case STORED: - //--- BYTEBITS() ---// /* go to byte boundary */ - hold >>>= bits & 7; - bits -= bits & 7; - //---// - //=== NEEDBITS(32); */ - while (bits < 32) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - if ((hold & 0xffff) !== ((hold >>> 16) ^ 0xffff)) { - strm.msg = 'invalid stored block lengths'; - state.mode = BAD; - break; - } - state.length = hold & 0xffff; - //Tracev((stderr, "inflate: stored length %u\n", - // state.length)); - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - state.mode = COPY_; - if (flush === Z_TREES) { break inf_leave; } - /* falls through */ - case COPY_: - state.mode = COPY; - /* falls through */ - case COPY: - copy = state.length; - if (copy) { - if (copy > have) { copy = have; } - if (copy > left) { copy = left; } - if (copy === 0) { break inf_leave; } - //--- zmemcpy(put, next, copy); --- - utils.arraySet(output, input, next, copy, put); - //---// - have -= copy; - next += copy; - left -= copy; - put += copy; - state.length -= copy; - break; - } - //Tracev((stderr, "inflate: stored end\n")); - state.mode = TYPE; - break; - case TABLE: - //=== NEEDBITS(14); */ - while (bits < 14) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - state.nlen = (hold & 0x1f)/*BITS(5)*/ + 257; - //--- DROPBITS(5) ---// - hold >>>= 5; - bits -= 5; - //---// - state.ndist = (hold & 0x1f)/*BITS(5)*/ + 1; - //--- DROPBITS(5) ---// - hold >>>= 5; - bits -= 5; - //---// - state.ncode = (hold & 0x0f)/*BITS(4)*/ + 4; - //--- DROPBITS(4) ---// - hold >>>= 4; - bits -= 4; - //---// -//#ifndef PKZIP_BUG_WORKAROUND - if (state.nlen > 286 || state.ndist > 30) { - strm.msg = 'too many length or distance symbols'; - state.mode = BAD; - break; - } -//#endif - //Tracev((stderr, "inflate: table sizes ok\n")); - state.have = 0; - state.mode = LENLENS; - /* falls through */ - case LENLENS: - while (state.have < state.ncode) { - //=== NEEDBITS(3); - while (bits < 3) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - state.lens[order[state.have++]] = (hold & 0x07);//BITS(3); - //--- DROPBITS(3) ---// - hold >>>= 3; - bits -= 3; - //---// - } - while (state.have < 19) { - state.lens[order[state.have++]] = 0; - } - // We have separate tables & no pointers. 2 commented lines below not needed. - //state.next = state.codes; - //state.lencode = state.next; - // Switch to use dynamic table - state.lencode = state.lendyn; - state.lenbits = 7; - - opts = { bits: state.lenbits }; - ret = inflate_table(CODES, state.lens, 0, 19, state.lencode, 0, state.work, opts); - state.lenbits = opts.bits; - - if (ret) { - strm.msg = 'invalid code lengths set'; - state.mode = BAD; - break; - } - //Tracev((stderr, "inflate: code lengths ok\n")); - state.have = 0; - state.mode = CODELENS; - /* falls through */ - case CODELENS: - while (state.have < state.nlen + state.ndist) { - for (;;) { - here = state.lencode[hold & ((1 << state.lenbits) - 1)];/*BITS(state.lenbits)*/ - here_bits = here >>> 24; - here_op = (here >>> 16) & 0xff; - here_val = here & 0xffff; - - if ((here_bits) <= bits) { break; } - //--- PULLBYTE() ---// - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - //---// - } - if (here_val < 16) { - //--- DROPBITS(here.bits) ---// - hold >>>= here_bits; - bits -= here_bits; - //---// - state.lens[state.have++] = here_val; - } - else { - if (here_val === 16) { - //=== NEEDBITS(here.bits + 2); - n = here_bits + 2; - while (bits < n) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - //--- DROPBITS(here.bits) ---// - hold >>>= here_bits; - bits -= here_bits; - //---// - if (state.have === 0) { - strm.msg = 'invalid bit length repeat'; - state.mode = BAD; - break; - } - len = state.lens[state.have - 1]; - copy = 3 + (hold & 0x03);//BITS(2); - //--- DROPBITS(2) ---// - hold >>>= 2; - bits -= 2; - //---// - } - else if (here_val === 17) { - //=== NEEDBITS(here.bits + 3); - n = here_bits + 3; - while (bits < n) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - //--- DROPBITS(here.bits) ---// - hold >>>= here_bits; - bits -= here_bits; - //---// - len = 0; - copy = 3 + (hold & 0x07);//BITS(3); - //--- DROPBITS(3) ---// - hold >>>= 3; - bits -= 3; - //---// - } - else { - //=== NEEDBITS(here.bits + 7); - n = here_bits + 7; - while (bits < n) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - //--- DROPBITS(here.bits) ---// - hold >>>= here_bits; - bits -= here_bits; - //---// - len = 0; - copy = 11 + (hold & 0x7f);//BITS(7); - //--- DROPBITS(7) ---// - hold >>>= 7; - bits -= 7; - //---// - } - if (state.have + copy > state.nlen + state.ndist) { - strm.msg = 'invalid bit length repeat'; - state.mode = BAD; - break; - } - while (copy--) { - state.lens[state.have++] = len; - } - } - } - - /* handle error breaks in while */ - if (state.mode === BAD) { break; } - - /* check for end-of-block code (better have one) */ - if (state.lens[256] === 0) { - strm.msg = 'invalid code -- missing end-of-block'; - state.mode = BAD; - break; - } - - /* build code tables -- note: do not change the lenbits or distbits - values here (9 and 6) without reading the comments in inftrees.h - concerning the ENOUGH constants, which depend on those values */ - state.lenbits = 9; - - opts = { bits: state.lenbits }; - ret = inflate_table(LENS, state.lens, 0, state.nlen, state.lencode, 0, state.work, opts); - // We have separate tables & no pointers. 2 commented lines below not needed. - // state.next_index = opts.table_index; - state.lenbits = opts.bits; - // state.lencode = state.next; - - if (ret) { - strm.msg = 'invalid literal/lengths set'; - state.mode = BAD; - break; - } - - state.distbits = 6; - //state.distcode.copy(state.codes); - // Switch to use dynamic table - state.distcode = state.distdyn; - opts = { bits: state.distbits }; - ret = inflate_table(DISTS, state.lens, state.nlen, state.ndist, state.distcode, 0, state.work, opts); - // We have separate tables & no pointers. 2 commented lines below not needed. - // state.next_index = opts.table_index; - state.distbits = opts.bits; - // state.distcode = state.next; - - if (ret) { - strm.msg = 'invalid distances set'; - state.mode = BAD; - break; - } - //Tracev((stderr, 'inflate: codes ok\n')); - state.mode = LEN_; - if (flush === Z_TREES) { break inf_leave; } - /* falls through */ - case LEN_: - state.mode = LEN; - /* falls through */ - case LEN: - if (have >= 6 && left >= 258) { - //--- RESTORE() --- - strm.next_out = put; - strm.avail_out = left; - strm.next_in = next; - strm.avail_in = have; - state.hold = hold; - state.bits = bits; - //--- - inflate_fast(strm, _out); - //--- LOAD() --- - put = strm.next_out; - output = strm.output; - left = strm.avail_out; - next = strm.next_in; - input = strm.input; - have = strm.avail_in; - hold = state.hold; - bits = state.bits; - //--- - - if (state.mode === TYPE) { - state.back = -1; - } - break; - } - state.back = 0; - for (;;) { - here = state.lencode[hold & ((1 << state.lenbits) - 1)]; /*BITS(state.lenbits)*/ - here_bits = here >>> 24; - here_op = (here >>> 16) & 0xff; - here_val = here & 0xffff; - - if (here_bits <= bits) { break; } - //--- PULLBYTE() ---// - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - //---// - } - if (here_op && (here_op & 0xf0) === 0) { - last_bits = here_bits; - last_op = here_op; - last_val = here_val; - for (;;) { - here = state.lencode[last_val + - ((hold & ((1 << (last_bits + last_op)) - 1))/*BITS(last.bits + last.op)*/ >> last_bits)]; - here_bits = here >>> 24; - here_op = (here >>> 16) & 0xff; - here_val = here & 0xffff; - - if ((last_bits + here_bits) <= bits) { break; } - //--- PULLBYTE() ---// - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - //---// - } - //--- DROPBITS(last.bits) ---// - hold >>>= last_bits; - bits -= last_bits; - //---// - state.back += last_bits; - } - //--- DROPBITS(here.bits) ---// - hold >>>= here_bits; - bits -= here_bits; - //---// - state.back += here_bits; - state.length = here_val; - if (here_op === 0) { - //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ? - // "inflate: literal '%c'\n" : - // "inflate: literal 0x%02x\n", here.val)); - state.mode = LIT; - break; - } - if (here_op & 32) { - //Tracevv((stderr, "inflate: end of block\n")); - state.back = -1; - state.mode = TYPE; - break; - } - if (here_op & 64) { - strm.msg = 'invalid literal/length code'; - state.mode = BAD; - break; - } - state.extra = here_op & 15; - state.mode = LENEXT; - /* falls through */ - case LENEXT: - if (state.extra) { - //=== NEEDBITS(state.extra); - n = state.extra; - while (bits < n) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - state.length += hold & ((1 << state.extra) - 1)/*BITS(state.extra)*/; - //--- DROPBITS(state.extra) ---// - hold >>>= state.extra; - bits -= state.extra; - //---// - state.back += state.extra; - } - //Tracevv((stderr, "inflate: length %u\n", state.length)); - state.was = state.length; - state.mode = DIST; - /* falls through */ - case DIST: - for (;;) { - here = state.distcode[hold & ((1 << state.distbits) - 1)];/*BITS(state.distbits)*/ - here_bits = here >>> 24; - here_op = (here >>> 16) & 0xff; - here_val = here & 0xffff; - - if ((here_bits) <= bits) { break; } - //--- PULLBYTE() ---// - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - //---// - } - if ((here_op & 0xf0) === 0) { - last_bits = here_bits; - last_op = here_op; - last_val = here_val; - for (;;) { - here = state.distcode[last_val + - ((hold & ((1 << (last_bits + last_op)) - 1))/*BITS(last.bits + last.op)*/ >> last_bits)]; - here_bits = here >>> 24; - here_op = (here >>> 16) & 0xff; - here_val = here & 0xffff; - - if ((last_bits + here_bits) <= bits) { break; } - //--- PULLBYTE() ---// - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - //---// - } - //--- DROPBITS(last.bits) ---// - hold >>>= last_bits; - bits -= last_bits; - //---// - state.back += last_bits; - } - //--- DROPBITS(here.bits) ---// - hold >>>= here_bits; - bits -= here_bits; - //---// - state.back += here_bits; - if (here_op & 64) { - strm.msg = 'invalid distance code'; - state.mode = BAD; - break; - } - state.offset = here_val; - state.extra = (here_op) & 15; - state.mode = DISTEXT; - /* falls through */ - case DISTEXT: - if (state.extra) { - //=== NEEDBITS(state.extra); - n = state.extra; - while (bits < n) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - state.offset += hold & ((1 << state.extra) - 1)/*BITS(state.extra)*/; - //--- DROPBITS(state.extra) ---// - hold >>>= state.extra; - bits -= state.extra; - //---// - state.back += state.extra; - } -//#ifdef INFLATE_STRICT - if (state.offset > state.dmax) { - strm.msg = 'invalid distance too far back'; - state.mode = BAD; - break; - } -//#endif - //Tracevv((stderr, "inflate: distance %u\n", state.offset)); - state.mode = MATCH; - /* falls through */ - case MATCH: - if (left === 0) { break inf_leave; } - copy = _out - left; - if (state.offset > copy) { /* copy from window */ - copy = state.offset - copy; - if (copy > state.whave) { - if (state.sane) { - strm.msg = 'invalid distance too far back'; - state.mode = BAD; - break; - } -// (!) This block is disabled in zlib defaults, -// don't enable it for binary compatibility -//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR -// Trace((stderr, "inflate.c too far\n")); -// copy -= state.whave; -// if (copy > state.length) { copy = state.length; } -// if (copy > left) { copy = left; } -// left -= copy; -// state.length -= copy; -// do { -// output[put++] = 0; -// } while (--copy); -// if (state.length === 0) { state.mode = LEN; } -// break; -//#endif - } - if (copy > state.wnext) { - copy -= state.wnext; - from = state.wsize - copy; - } - else { - from = state.wnext - copy; - } - if (copy > state.length) { copy = state.length; } - from_source = state.window; - } - else { /* copy from output */ - from_source = output; - from = put - state.offset; - copy = state.length; - } - if (copy > left) { copy = left; } - left -= copy; - state.length -= copy; - do { - output[put++] = from_source[from++]; - } while (--copy); - if (state.length === 0) { state.mode = LEN; } - break; - case LIT: - if (left === 0) { break inf_leave; } - output[put++] = state.length; - left--; - state.mode = LEN; - break; - case CHECK: - if (state.wrap) { - //=== NEEDBITS(32); - while (bits < 32) { - if (have === 0) { break inf_leave; } - have--; - // Use '|' instead of '+' to make sure that result is signed - hold |= input[next++] << bits; - bits += 8; - } - //===// - _out -= left; - strm.total_out += _out; - state.total += _out; - if (_out) { - strm.adler = state.check = - /*UPDATE(state.check, put - _out, _out);*/ - (state.flags ? crc32(state.check, output, _out, put - _out) : adler32(state.check, output, _out, put - _out)); - - } - _out = left; - // NB: crc32 stored as signed 32-bit int, zswap32 returns signed too - if ((state.flags ? hold : zswap32(hold)) !== state.check) { - strm.msg = 'incorrect data check'; - state.mode = BAD; - break; - } - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - //Tracev((stderr, "inflate: check matches trailer\n")); - } - state.mode = LENGTH; - /* falls through */ - case LENGTH: - if (state.wrap && state.flags) { - //=== NEEDBITS(32); - while (bits < 32) { - if (have === 0) { break inf_leave; } - have--; - hold += input[next++] << bits; - bits += 8; - } - //===// - if (hold !== (state.total & 0xffffffff)) { - strm.msg = 'incorrect length check'; - state.mode = BAD; - break; - } - //=== INITBITS(); - hold = 0; - bits = 0; - //===// - //Tracev((stderr, "inflate: length matches trailer\n")); - } - state.mode = DONE; - /* falls through */ - case DONE: - ret = Z_STREAM_END; - break inf_leave; - case BAD: - ret = Z_DATA_ERROR; - break inf_leave; - case MEM: - return Z_MEM_ERROR; - case SYNC: - /* falls through */ - default: - return Z_STREAM_ERROR; - } - } - - // inf_leave <- here is real place for "goto inf_leave", emulated via "break inf_leave" - - /* - Return from inflate(), updating the total counts and the check value. - If there was no progress during the inflate() call, return a buffer - error. Call updatewindow() to create and/or update the window state. - Note: a memory error from inflate() is non-recoverable. - */ - - //--- RESTORE() --- - strm.next_out = put; - strm.avail_out = left; - strm.next_in = next; - strm.avail_in = have; - state.hold = hold; - state.bits = bits; - //--- - - if (state.wsize || (_out !== strm.avail_out && state.mode < BAD && - (state.mode < CHECK || flush !== Z_FINISH))) { - if (updatewindow(strm, strm.output, strm.next_out, _out - strm.avail_out)) { - state.mode = MEM; - return Z_MEM_ERROR; - } - } - _in -= strm.avail_in; - _out -= strm.avail_out; - strm.total_in += _in; - strm.total_out += _out; - state.total += _out; - if (state.wrap && _out) { - strm.adler = state.check = /*UPDATE(state.check, strm.next_out - _out, _out);*/ - (state.flags ? crc32(state.check, output, _out, strm.next_out - _out) : adler32(state.check, output, _out, strm.next_out - _out)); - } - strm.data_type = state.bits + (state.last ? 64 : 0) + - (state.mode === TYPE ? 128 : 0) + - (state.mode === LEN_ || state.mode === COPY_ ? 256 : 0); - if (((_in === 0 && _out === 0) || flush === Z_FINISH) && ret === Z_OK) { - ret = Z_BUF_ERROR; - } - return ret; -} - -function inflateEnd(strm) { - - if (!strm || !strm.state /*|| strm->zfree == (free_func)0*/) { - return Z_STREAM_ERROR; - } - - var state = strm.state; - if (state.window) { - state.window = null; - } - strm.state = null; - return Z_OK; -} - -function inflateGetHeader(strm, head) { - var state; - - /* check state */ - if (!strm || !strm.state) { return Z_STREAM_ERROR; } - state = strm.state; - if ((state.wrap & 2) === 0) { return Z_STREAM_ERROR; } - - /* save header structure */ - state.head = head; - head.done = false; - return Z_OK; -} - -function inflateSetDictionary(strm, dictionary) { - var dictLength = dictionary.length; - - var state; - var dictid; - var ret; - - /* check state */ - if (!strm /* == Z_NULL */ || !strm.state /* == Z_NULL */) { return Z_STREAM_ERROR; } - state = strm.state; - - if (state.wrap !== 0 && state.mode !== DICT) { - return Z_STREAM_ERROR; - } - - /* check for correct dictionary identifier */ - if (state.mode === DICT) { - dictid = 1; /* adler32(0, null, 0)*/ - /* dictid = adler32(dictid, dictionary, dictLength); */ - dictid = adler32(dictid, dictionary, dictLength, 0); - if (dictid !== state.check) { - return Z_DATA_ERROR; - } - } - /* copy dictionary to window using updatewindow(), which will amend the - existing dictionary if appropriate */ - ret = updatewindow(strm, dictionary, dictLength, dictLength); - if (ret) { - state.mode = MEM; - return Z_MEM_ERROR; - } - state.havedict = 1; - // Tracev((stderr, "inflate: dictionary set\n")); - return Z_OK; -} - -exports.inflateReset = inflateReset; -exports.inflateReset2 = inflateReset2; -exports.inflateResetKeep = inflateResetKeep; -exports.inflateInit = inflateInit; -exports.inflateInit2 = inflateInit2; -exports.inflate = inflate; -exports.inflateEnd = inflateEnd; -exports.inflateGetHeader = inflateGetHeader; -exports.inflateSetDictionary = inflateSetDictionary; -exports.inflateInfo = 'pako inflate (from Nodeca project)'; - -/* Not implemented -exports.inflateCopy = inflateCopy; -exports.inflateGetDictionary = inflateGetDictionary; -exports.inflateMark = inflateMark; -exports.inflatePrime = inflatePrime; -exports.inflateSync = inflateSync; -exports.inflateSyncPoint = inflateSyncPoint; -exports.inflateUndermine = inflateUndermine; -*/ - -},{"../utils/common":1,"./adler32":3,"./crc32":5,"./inffast":7,"./inftrees":9}],9:[function(require,module,exports){ -'use strict'; - -// (C) 1995-2013 Jean-loup Gailly and Mark Adler -// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would be -// appreciated but is not required. -// 2. Altered source versions must be plainly marked as such, and must not be -// misrepresented as being the original software. -// 3. This notice may not be removed or altered from any source distribution. - -var utils = require('../utils/common'); - -var MAXBITS = 15; -var ENOUGH_LENS = 852; -var ENOUGH_DISTS = 592; -//var ENOUGH = (ENOUGH_LENS+ENOUGH_DISTS); - -var CODES = 0; -var LENS = 1; -var DISTS = 2; - -var lbase = [ /* Length codes 257..285 base */ - 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31, - 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0 -]; - -var lext = [ /* Length codes 257..285 extra */ - 16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18, - 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 72, 78 -]; - -var dbase = [ /* Distance codes 0..29 base */ - 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, - 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145, - 8193, 12289, 16385, 24577, 0, 0 -]; - -var dext = [ /* Distance codes 0..29 extra */ - 16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, - 23, 23, 24, 24, 25, 25, 26, 26, 27, 27, - 28, 28, 29, 29, 64, 64 -]; - -module.exports = function inflate_table(type, lens, lens_index, codes, table, table_index, work, opts) -{ - var bits = opts.bits; - //here = opts.here; /* table entry for duplication */ - - var len = 0; /* a code's length in bits */ - var sym = 0; /* index of code symbols */ - var min = 0, max = 0; /* minimum and maximum code lengths */ - var root = 0; /* number of index bits for root table */ - var curr = 0; /* number of index bits for current table */ - var drop = 0; /* code bits to drop for sub-table */ - var left = 0; /* number of prefix codes available */ - var used = 0; /* code entries in table used */ - var huff = 0; /* Huffman code */ - var incr; /* for incrementing code, index */ - var fill; /* index for replicating entries */ - var low; /* low bits for current root entry */ - var mask; /* mask for low root bits */ - var next; /* next available space in table */ - var base = null; /* base value table to use */ - var base_index = 0; -// var shoextra; /* extra bits table to use */ - var end; /* use base and extra for symbol > end */ - var count = new utils.Buf16(MAXBITS + 1); //[MAXBITS+1]; /* number of codes of each length */ - var offs = new utils.Buf16(MAXBITS + 1); //[MAXBITS+1]; /* offsets in table for each length */ - var extra = null; - var extra_index = 0; - - var here_bits, here_op, here_val; - - /* - Process a set of code lengths to create a canonical Huffman code. The - code lengths are lens[0..codes-1]. Each length corresponds to the - symbols 0..codes-1. The Huffman code is generated by first sorting the - symbols by length from short to long, and retaining the symbol order - for codes with equal lengths. Then the code starts with all zero bits - for the first code of the shortest length, and the codes are integer - increments for the same length, and zeros are appended as the length - increases. For the deflate format, these bits are stored backwards - from their more natural integer increment ordering, and so when the - decoding tables are built in the large loop below, the integer codes - are incremented backwards. - - This routine assumes, but does not check, that all of the entries in - lens[] are in the range 0..MAXBITS. The caller must assure this. - 1..MAXBITS is interpreted as that code length. zero means that that - symbol does not occur in this code. - - The codes are sorted by computing a count of codes for each length, - creating from that a table of starting indices for each length in the - sorted table, and then entering the symbols in order in the sorted - table. The sorted table is work[], with that space being provided by - the caller. - - The length counts are used for other purposes as well, i.e. finding - the minimum and maximum length codes, determining if there are any - codes at all, checking for a valid set of lengths, and looking ahead - at length counts to determine sub-table sizes when building the - decoding tables. - */ - - /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */ - for (len = 0; len <= MAXBITS; len++) { - count[len] = 0; - } - for (sym = 0; sym < codes; sym++) { - count[lens[lens_index + sym]]++; - } - - /* bound code lengths, force root to be within code lengths */ - root = bits; - for (max = MAXBITS; max >= 1; max--) { - if (count[max] !== 0) { break; } - } - if (root > max) { - root = max; - } - if (max === 0) { /* no symbols to code at all */ - //table.op[opts.table_index] = 64; //here.op = (var char)64; /* invalid code marker */ - //table.bits[opts.table_index] = 1; //here.bits = (var char)1; - //table.val[opts.table_index++] = 0; //here.val = (var short)0; - table[table_index++] = (1 << 24) | (64 << 16) | 0; - - - //table.op[opts.table_index] = 64; - //table.bits[opts.table_index] = 1; - //table.val[opts.table_index++] = 0; - table[table_index++] = (1 << 24) | (64 << 16) | 0; - - opts.bits = 1; - return 0; /* no symbols, but wait for decoding to report error */ - } - for (min = 1; min < max; min++) { - if (count[min] !== 0) { break; } - } - if (root < min) { - root = min; - } - - /* check for an over-subscribed or incomplete set of lengths */ - left = 1; - for (len = 1; len <= MAXBITS; len++) { - left <<= 1; - left -= count[len]; - if (left < 0) { - return -1; - } /* over-subscribed */ - } - if (left > 0 && (type === CODES || max !== 1)) { - return -1; /* incomplete set */ - } - - /* generate offsets into symbol table for each length for sorting */ - offs[1] = 0; - for (len = 1; len < MAXBITS; len++) { - offs[len + 1] = offs[len] + count[len]; - } - - /* sort symbols by length, by symbol order within each length */ - for (sym = 0; sym < codes; sym++) { - if (lens[lens_index + sym] !== 0) { - work[offs[lens[lens_index + sym]]++] = sym; - } - } - - /* - Create and fill in decoding tables. In this loop, the table being - filled is at next and has curr index bits. The code being used is huff - with length len. That code is converted to an index by dropping drop - bits off of the bottom. For codes where len is less than drop + curr, - those top drop + curr - len bits are incremented through all values to - fill the table with replicated entries. - - root is the number of index bits for the root table. When len exceeds - root, sub-tables are created pointed to by the root entry with an index - of the low root bits of huff. This is saved in low to check for when a - new sub-table should be started. drop is zero when the root table is - being filled, and drop is root when sub-tables are being filled. - - When a new sub-table is needed, it is necessary to look ahead in the - code lengths to determine what size sub-table is needed. The length - counts are used for this, and so count[] is decremented as codes are - entered in the tables. - - used keeps track of how many table entries have been allocated from the - provided *table space. It is checked for LENS and DIST tables against - the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in - the initial root table size constants. See the comments in inftrees.h - for more information. - - sym increments through all symbols, and the loop terminates when - all codes of length max, i.e. all codes, have been processed. This - routine permits incomplete codes, so another loop after this one fills - in the rest of the decoding tables with invalid code markers. - */ - - /* set up for code type */ - // poor man optimization - use if-else instead of switch, - // to avoid deopts in old v8 - if (type === CODES) { - base = extra = work; /* dummy value--not used */ - end = 19; - - } else if (type === LENS) { - base = lbase; - base_index -= 257; - extra = lext; - extra_index -= 257; - end = 256; - - } else { /* DISTS */ - base = dbase; - extra = dext; - end = -1; - } - - /* initialize opts for loop */ - huff = 0; /* starting code */ - sym = 0; /* starting code symbol */ - len = min; /* starting code length */ - next = table_index; /* current table to fill in */ - curr = root; /* current table index bits */ - drop = 0; /* current bits to drop from code for index */ - low = -1; /* trigger new sub-table when len > root */ - used = 1 << root; /* use root table entries */ - mask = used - 1; /* mask for comparing low */ - - /* check available table space */ - if ((type === LENS && used > ENOUGH_LENS) || - (type === DISTS && used > ENOUGH_DISTS)) { - return 1; - } - - /* process all codes and make table entries */ - for (;;) { - /* create table entry */ - here_bits = len - drop; - if (work[sym] < end) { - here_op = 0; - here_val = work[sym]; - } - else if (work[sym] > end) { - here_op = extra[extra_index + work[sym]]; - here_val = base[base_index + work[sym]]; - } - else { - here_op = 32 + 64; /* end of block */ - here_val = 0; - } - - /* replicate for those indices with low len bits equal to huff */ - incr = 1 << (len - drop); - fill = 1 << curr; - min = fill; /* save offset to next table */ - do { - fill -= incr; - table[next + (huff >> drop) + fill] = (here_bits << 24) | (here_op << 16) | here_val |0; - } while (fill !== 0); - - /* backwards increment the len-bit code huff */ - incr = 1 << (len - 1); - while (huff & incr) { - incr >>= 1; - } - if (incr !== 0) { - huff &= incr - 1; - huff += incr; - } else { - huff = 0; - } - - /* go to next symbol, update count, len */ - sym++; - if (--count[len] === 0) { - if (len === max) { break; } - len = lens[lens_index + work[sym]]; - } - - /* create new sub-table if needed */ - if (len > root && (huff & mask) !== low) { - /* if first time, transition to sub-tables */ - if (drop === 0) { - drop = root; - } - - /* increment past last table */ - next += min; /* here min is 1 << curr */ - - /* determine length of next table */ - curr = len - drop; - left = 1 << curr; - while (curr + drop < max) { - left -= count[curr + drop]; - if (left <= 0) { break; } - curr++; - left <<= 1; - } - - /* check for enough space */ - used += 1 << curr; - if ((type === LENS && used > ENOUGH_LENS) || - (type === DISTS && used > ENOUGH_DISTS)) { - return 1; - } - - /* point entry in root table to sub-table */ - low = huff & mask; - /*table.op[low] = curr; - table.bits[low] = root; - table.val[low] = next - opts.table_index;*/ - table[low] = (root << 24) | (curr << 16) | (next - table_index) |0; - } - } - - /* fill in remaining table entry if code is incomplete (guaranteed to have - at most one remaining entry, since if the code is incomplete, the - maximum code length that was allowed to get this far is one bit) */ - if (huff !== 0) { - //table.op[next + huff] = 64; /* invalid code marker */ - //table.bits[next + huff] = len - drop; - //table.val[next + huff] = 0; - table[next + huff] = ((len - drop) << 24) | (64 << 16) |0; - } - - /* set return parameters */ - //opts.table_index += used; - opts.bits = root; - return 0; -}; - -},{"../utils/common":1}],10:[function(require,module,exports){ -'use strict'; - -// (C) 1995-2013 Jean-loup Gailly and Mark Adler -// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would be -// appreciated but is not required. -// 2. Altered source versions must be plainly marked as such, and must not be -// misrepresented as being the original software. -// 3. This notice may not be removed or altered from any source distribution. - -module.exports = { - 2: 'need dictionary', /* Z_NEED_DICT 2 */ - 1: 'stream end', /* Z_STREAM_END 1 */ - 0: '', /* Z_OK 0 */ - '-1': 'file error', /* Z_ERRNO (-1) */ - '-2': 'stream error', /* Z_STREAM_ERROR (-2) */ - '-3': 'data error', /* Z_DATA_ERROR (-3) */ - '-4': 'insufficient memory', /* Z_MEM_ERROR (-4) */ - '-5': 'buffer error', /* Z_BUF_ERROR (-5) */ - '-6': 'incompatible version' /* Z_VERSION_ERROR (-6) */ -}; - -},{}],11:[function(require,module,exports){ -'use strict'; - -// (C) 1995-2013 Jean-loup Gailly and Mark Adler -// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would be -// appreciated but is not required. -// 2. Altered source versions must be plainly marked as such, and must not be -// misrepresented as being the original software. -// 3. This notice may not be removed or altered from any source distribution. - -function ZStream() { - /* next input byte */ - this.input = null; // JS specific, because we have no pointers - this.next_in = 0; - /* number of bytes available at input */ - this.avail_in = 0; - /* total number of input bytes read so far */ - this.total_in = 0; - /* next output byte should be put there */ - this.output = null; // JS specific, because we have no pointers - this.next_out = 0; - /* remaining free space at output */ - this.avail_out = 0; - /* total number of bytes output so far */ - this.total_out = 0; - /* last error message, NULL if no error */ - this.msg = ''/*Z_NULL*/; - /* not visible by applications */ - this.state = null; - /* best guess about the data type: binary or text */ - this.data_type = 2/*Z_UNKNOWN*/; - /* adler32 value of the uncompressed data */ - this.adler = 0; -} - -module.exports = ZStream; - -},{}],"/lib/inflate.js":[function(require,module,exports){ -'use strict'; - - -var zlib_inflate = require('./zlib/inflate'); -var utils = require('./utils/common'); -var strings = require('./utils/strings'); -var c = require('./zlib/constants'); -var msg = require('./zlib/messages'); -var ZStream = require('./zlib/zstream'); -var GZheader = require('./zlib/gzheader'); - -var toString = Object.prototype.toString; - -/** - * class Inflate - * - * Generic JS-style wrapper for zlib calls. If you don't need - * streaming behaviour - use more simple functions: [[inflate]] - * and [[inflateRaw]]. - **/ - -/* internal - * inflate.chunks -> Array - * - * Chunks of output data, if [[Inflate#onData]] not overridden. - **/ - -/** - * Inflate.result -> Uint8Array|Array|String - * - * Uncompressed result, generated by default [[Inflate#onData]] - * and [[Inflate#onEnd]] handlers. Filled after you push last chunk - * (call [[Inflate#push]] with `Z_FINISH` / `true` param) or if you - * push a chunk with explicit flush (call [[Inflate#push]] with - * `Z_SYNC_FLUSH` param). - **/ - -/** - * Inflate.err -> Number - * - * Error code after inflate finished. 0 (Z_OK) on success. - * Should be checked if broken data possible. - **/ - -/** - * Inflate.msg -> String - * - * Error message, if [[Inflate.err]] != 0 - **/ - - -/** - * new Inflate(options) - * - options (Object): zlib inflate options. - * - * Creates new inflator instance with specified params. Throws exception - * on bad params. Supported options: - * - * - `windowBits` - * - `dictionary` - * - * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced) - * for more information on these. - * - * Additional options, for internal needs: - * - * - `chunkSize` - size of generated data chunks (16K by default) - * - `raw` (Boolean) - do raw inflate - * - `to` (String) - if equal to 'string', then result will be converted - * from utf8 to utf16 (javascript) string. When string output requested, - * chunk length can differ from `chunkSize`, depending on content. - * - * By default, when no options set, autodetect deflate/gzip data format via - * wrapper header. - * - * ##### Example: - * - * ```javascript - * var pako = require('pako') - * , chunk1 = Uint8Array([1,2,3,4,5,6,7,8,9]) - * , chunk2 = Uint8Array([10,11,12,13,14,15,16,17,18,19]); - * - * var inflate = new pako.Inflate({ level: 3}); - * - * inflate.push(chunk1, false); - * inflate.push(chunk2, true); // true -> last chunk - * - * if (inflate.err) { throw new Error(inflate.err); } - * - * console.log(inflate.result); - * ``` - **/ -function Inflate(options) { - if (!(this instanceof Inflate)) return new Inflate(options); - - this.options = utils.assign({ - chunkSize: 16384, - windowBits: 0, - to: '' - }, options || {}); - - var opt = this.options; - - // Force window size for `raw` data, if not set directly, - // because we have no header for autodetect. - if (opt.raw && (opt.windowBits >= 0) && (opt.windowBits < 16)) { - opt.windowBits = -opt.windowBits; - if (opt.windowBits === 0) { opt.windowBits = -15; } - } - - // If `windowBits` not defined (and mode not raw) - set autodetect flag for gzip/deflate - if ((opt.windowBits >= 0) && (opt.windowBits < 16) && - !(options && options.windowBits)) { - opt.windowBits += 32; - } - - // Gzip header has no info about windows size, we can do autodetect only - // for deflate. So, if window size not set, force it to max when gzip possible - if ((opt.windowBits > 15) && (opt.windowBits < 48)) { - // bit 3 (16) -> gzipped data - // bit 4 (32) -> autodetect gzip/deflate - if ((opt.windowBits & 15) === 0) { - opt.windowBits |= 15; - } - } - - this.err = 0; // error code, if happens (0 = Z_OK) - this.msg = ''; // error message - this.ended = false; // used to avoid multiple onEnd() calls - this.chunks = []; // chunks of compressed data - - this.strm = new ZStream(); - this.strm.avail_out = 0; - - var status = zlib_inflate.inflateInit2( - this.strm, - opt.windowBits - ); - - if (status !== c.Z_OK) { - throw new Error(msg[status]); - } - - this.header = new GZheader(); - - zlib_inflate.inflateGetHeader(this.strm, this.header); - - // Setup dictionary - if (opt.dictionary) { - // Convert data if needed - if (typeof opt.dictionary === 'string') { - opt.dictionary = strings.string2buf(opt.dictionary); - } else if (toString.call(opt.dictionary) === '[object ArrayBuffer]') { - opt.dictionary = new Uint8Array(opt.dictionary); - } - if (opt.raw) { //In raw mode we need to set the dictionary early - status = zlib_inflate.inflateSetDictionary(this.strm, opt.dictionary); - if (status !== c.Z_OK) { - throw new Error(msg[status]); - } - } - } -} - -/** - * Inflate#push(data[, mode]) -> Boolean - * - data (Uint8Array|Array|ArrayBuffer|String): input data - * - mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE modes. - * See constants. Skipped or `false` means Z_NO_FLUSH, `true` means Z_FINISH. - * - * Sends input data to inflate pipe, generating [[Inflate#onData]] calls with - * new output chunks. Returns `true` on success. The last data block must have - * mode Z_FINISH (or `true`). That will flush internal pending buffers and call - * [[Inflate#onEnd]]. For interim explicit flushes (without ending the stream) you - * can use mode Z_SYNC_FLUSH, keeping the decompression context. - * - * On fail call [[Inflate#onEnd]] with error code and return false. - * - * We strongly recommend to use `Uint8Array` on input for best speed (output - * format is detected automatically). Also, don't skip last param and always - * use the same type in your code (boolean or number). That will improve JS speed. - * - * For regular `Array`-s make sure all elements are [0..255]. - * - * ##### Example - * - * ```javascript - * push(chunk, false); // push one of data chunks - * ... - * push(chunk, true); // push last chunk - * ``` - **/ -Inflate.prototype.push = function (data, mode) { - var strm = this.strm; - var chunkSize = this.options.chunkSize; - var dictionary = this.options.dictionary; - var status, _mode; - var next_out_utf8, tail, utf8str; - - // Flag to properly process Z_BUF_ERROR on testing inflate call - // when we check that all output data was flushed. - var allowBufError = false; - - if (this.ended) { return false; } - _mode = (mode === ~~mode) ? mode : ((mode === true) ? c.Z_FINISH : c.Z_NO_FLUSH); - - // Convert data if needed - if (typeof data === 'string') { - // Only binary strings can be decompressed on practice - strm.input = strings.binstring2buf(data); - } else if (toString.call(data) === '[object ArrayBuffer]') { - strm.input = new Uint8Array(data); - } else { - strm.input = data; - } - - strm.next_in = 0; - strm.avail_in = strm.input.length; - - do { - if (strm.avail_out === 0) { - strm.output = new utils.Buf8(chunkSize); - strm.next_out = 0; - strm.avail_out = chunkSize; - } - - status = zlib_inflate.inflate(strm, c.Z_NO_FLUSH); /* no bad return value */ - - if (status === c.Z_NEED_DICT && dictionary) { - status = zlib_inflate.inflateSetDictionary(this.strm, dictionary); - } - - if (status === c.Z_BUF_ERROR && allowBufError === true) { - status = c.Z_OK; - allowBufError = false; - } - - if (status !== c.Z_STREAM_END && status !== c.Z_OK) { - this.onEnd(status); - this.ended = true; - return false; - } - - if (strm.next_out) { - if (strm.avail_out === 0 || status === c.Z_STREAM_END || (strm.avail_in === 0 && (_mode === c.Z_FINISH || _mode === c.Z_SYNC_FLUSH))) { - - if (this.options.to === 'string') { - - next_out_utf8 = strings.utf8border(strm.output, strm.next_out); - - tail = strm.next_out - next_out_utf8; - utf8str = strings.buf2string(strm.output, next_out_utf8); - - // move tail - strm.next_out = tail; - strm.avail_out = chunkSize - tail; - if (tail) { utils.arraySet(strm.output, strm.output, next_out_utf8, tail, 0); } - - this.onData(utf8str); - - } else { - this.onData(utils.shrinkBuf(strm.output, strm.next_out)); - } - } - } - - // When no more input data, we should check that internal inflate buffers - // are flushed. The only way to do it when avail_out = 0 - run one more - // inflate pass. But if output data not exists, inflate return Z_BUF_ERROR. - // Here we set flag to process this error properly. - // - // NOTE. Deflate does not return error in this case and does not needs such - // logic. - if (strm.avail_in === 0 && strm.avail_out === 0) { - allowBufError = true; - } - - } while ((strm.avail_in > 0 || strm.avail_out === 0) && status !== c.Z_STREAM_END); - - if (status === c.Z_STREAM_END) { - _mode = c.Z_FINISH; - } - - // Finalize on the last chunk. - if (_mode === c.Z_FINISH) { - status = zlib_inflate.inflateEnd(this.strm); - this.onEnd(status); - this.ended = true; - return status === c.Z_OK; - } - - // callback interim results if Z_SYNC_FLUSH. - if (_mode === c.Z_SYNC_FLUSH) { - this.onEnd(c.Z_OK); - strm.avail_out = 0; - return true; - } - - return true; -}; - - -/** - * Inflate#onData(chunk) -> Void - * - chunk (Uint8Array|Array|String): output data. Type of array depends - * on js engine support. When string output requested, each chunk - * will be string. - * - * By default, stores data blocks in `chunks[]` property and glue - * those in `onEnd`. Override this handler, if you need another behaviour. - **/ -Inflate.prototype.onData = function (chunk) { - this.chunks.push(chunk); -}; - - -/** - * Inflate#onEnd(status) -> Void - * - status (Number): inflate status. 0 (Z_OK) on success, - * other if not. - * - * Called either after you tell inflate that the input stream is - * complete (Z_FINISH) or should be flushed (Z_SYNC_FLUSH) - * or if an error happened. By default - join collected chunks, - * free memory and fill `results` / `err` properties. - **/ -Inflate.prototype.onEnd = function (status) { - // On success - join - if (status === c.Z_OK) { - if (this.options.to === 'string') { - // Glue & convert here, until we teach pako to send - // utf8 aligned strings to onData - this.result = this.chunks.join(''); - } else { - this.result = utils.flattenChunks(this.chunks); - } - } - this.chunks = []; - this.err = status; - this.msg = this.strm.msg; -}; - - -/** - * inflate(data[, options]) -> Uint8Array|Array|String - * - data (Uint8Array|Array|String): input data to decompress. - * - options (Object): zlib inflate options. - * - * Decompress `data` with inflate/ungzip and `options`. Autodetect - * format via wrapper header by default. That's why we don't provide - * separate `ungzip` method. - * - * Supported options are: - * - * - windowBits - * - * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced) - * for more information. - * - * Sugar (options): - * - * - `raw` (Boolean) - say that we work with raw stream, if you don't wish to specify - * negative windowBits implicitly. - * - `to` (String) - if equal to 'string', then result will be converted - * from utf8 to utf16 (javascript) string. When string output requested, - * chunk length can differ from `chunkSize`, depending on content. - * - * - * ##### Example: - * - * ```javascript - * var pako = require('pako') - * , input = pako.deflate([1,2,3,4,5,6,7,8,9]) - * , output; - * - * try { - * output = pako.inflate(input); - * } catch (err) - * console.log(err); - * } - * ``` - **/ -function inflate(input, options) { - var inflator = new Inflate(options); - - inflator.push(input, true); - - // That will never happens, if you don't cheat with options :) - if (inflator.err) { throw inflator.msg || msg[inflator.err]; } - - return inflator.result; -} - - -/** - * inflateRaw(data[, options]) -> Uint8Array|Array|String - * - data (Uint8Array|Array|String): input data to decompress. - * - options (Object): zlib inflate options. - * - * The same as [[inflate]], but creates raw data, without wrapper - * (header and adler32 crc). - **/ -function inflateRaw(input, options) { - options = options || {}; - options.raw = true; - return inflate(input, options); -} - - -/** - * ungzip(data[, options]) -> Uint8Array|Array|String - * - data (Uint8Array|Array|String): input data to decompress. - * - options (Object): zlib inflate options. - * - * Just shortcut to [[inflate]], because it autodetects format - * by header.content. Done for convenience. - **/ - - -exports.Inflate = Inflate; -exports.inflate = inflate; -exports.inflateRaw = inflateRaw; -exports.ungzip = inflate; - -},{"./utils/common":1,"./utils/strings":2,"./zlib/constants":4,"./zlib/gzheader":6,"./zlib/inflate":8,"./zlib/messages":10,"./zlib/zstream":11}]},{},[])("/lib/inflate.js") -}); diff --git a/school/node_modules/pako/dist/pako_inflate.min.js b/school/node_modules/pako/dist/pako_inflate.min.js deleted file mode 100644 index a191a78..0000000 --- a/school/node_modules/pako/dist/pako_inflate.min.js +++ /dev/null @@ -1 +0,0 @@ -!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{("undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this).pako=e()}}(function(){return function r(o,s,f){function l(t,e){if(!s[t]){if(!o[t]){var i="function"==typeof require&&require;if(!e&&i)return i(t,!0);if(d)return 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e;s--,l+=n[r++]<<d,d+=8}if(k&&0==(240&k)){for(g=w,v=k,p=_;k=(Z=i.lencode[p+((l&(1<<g+v)-1)>>g)])>>>16&255,_=65535&Z,!(g+(w=Z>>>24)<=d);){if(0===s)break e;s--,l+=n[r++]<<d,d+=8}l>>>=g,d-=g,i.back+=g}if(l>>>=w,d-=w,i.back+=w,i.length=_,0===k){i.mode=26;break}if(32&k){i.back=-1,i.mode=12;break}if(64&k){e.msg="invalid literal/length code",i.mode=30;break}i.extra=15&k,i.mode=22;case 22:if(i.extra){for(E=i.extra;d<E;){if(0===s)break e;s--,l+=n[r++]<<d,d+=8}i.length+=l&(1<<i.extra)-1,l>>>=i.extra,d-=i.extra,i.back+=i.extra}i.was=i.length,i.mode=23;case 23:for(;k=(Z=i.distcode[l&(1<<i.distbits)-1])>>>16&255,_=65535&Z,!((w=Z>>>24)<=d);){if(0===s)break e;s--,l+=n[r++]<<d,d+=8}if(0==(240&k)){for(g=w,v=k,p=_;k=(Z=i.distcode[p+((l&(1<<g+v)-1)>>g)])>>>16&255,_=65535&Z,!(g+(w=Z>>>24)<=d);){if(0===s)break e;s--,l+=n[r++]<<d,d+=8}l>>>=g,d-=g,i.back+=g}if(l>>>=w,d-=w,i.back+=w,64&k){e.msg="invalid distance code",i.mode=30;break}i.offset=_,i.extra=15&k,i.mode=24;case 24:if(i.extra){for(E=i.extra;d<E;){if(0===s)break e;s--,l+=n[r++]<<d,d+=8}i.offset+=l&(1<<i.extra)-1,l>>>=i.extra,d-=i.extra,i.back+=i.extra}if(i.offset>i.dmax){e.msg="invalid distance too far back",i.mode=30;break}i.mode=25;case 25:if(0===f)break e;if(h=u-f,i.offset>h){if((h=i.offset-h)>i.whave&&i.sane){e.msg="invalid distance too far back",i.mode=30;break}h>i.wnext?(h-=i.wnext,b=i.wsize-h):b=i.wnext-h,h>i.length&&(h=i.length),m=i.window}else m=a,b=o-i.offset,h=i.length;for(f<h&&(h=f),f-=h,i.length-=h;a[o++]=m[b++],--h;);0===i.length&&(i.mode=21);break;case 26:if(0===f)break e;a[o++]=i.length,f--,i.mode=21;break;case 27:if(i.wrap){for(;d<32;){if(0===s)break e;s--,l|=n[r++]<<d,d+=8}if(u-=f,e.total_out+=u,i.total+=u,u&&(e.adler=i.check=i.flags?N(i.check,a,u,o-u):R(i.check,a,u,o-u)),u=f,(i.flags?l:L(l))!==i.check){e.msg="incorrect data check",i.mode=30;break}d=l=0}i.mode=28;case 28:if(i.wrap&&i.flags){for(;d<32;){if(0===s)break e;s--,l+=n[r++]<<d,d+=8}if(l!==(4294967295&i.total)){e.msg="incorrect length check",i.mode=30;break}d=l=0}i.mode=29;case 29:y=1;break e;case 30:y=-3;break e;case 31:return-4;case 32:default:return U}return e.next_out=o,e.avail_out=f,e.next_in=r,e.avail_in=s,i.hold=l,i.bits=d,(i.wsize||u!==e.avail_out&&i.mode<30&&(i.mode<27||4!==t))&&j(e,e.output,e.next_out,u-e.avail_out)?(i.mode=31,-4):(c-=e.avail_in,u-=e.avail_out,e.total_in+=c,e.total_out+=u,i.total+=u,i.wrap&&u&&(e.adler=i.check=i.flags?N(i.check,a,u,e.next_out-u):R(i.check,a,u,e.next_out-u)),e.data_type=i.bits+(i.last?64:0)+(12===i.mode?128:0)+(20===i.mode||15===i.mode?256:0),(0===c&&0===u||4===t)&&y===T&&(y=-5),y)},i.inflateEnd=function(e){if(!e||!e.state)return U;var t=e.state;return t.window&&(t.window=null),e.state=null,T},i.inflateGetHeader=function(e,t){var i;return e&&e.state?0==(2&(i=e.state).wrap)?U:((i.head=t).done=!1,T):U},i.inflateSetDictionary=function(e,t){var i,n=t.length;return e&&e.state?0!==(i=e.state).wrap&&11!==i.mode?U:11===i.mode&&R(1,t,n,0)!==i.check?-3:j(e,t,n,n)?(i.mode=31,-4):(i.havedict=1,T):U},i.inflateInfo="pako inflate (from Nodeca project)"},{"../utils/common":1,"./adler32":3,"./crc32":5,"./inffast":7,"./inftrees":9}],9:[function(e,t,i){"use strict";var I=e("../utils/common"),D=[3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258,0,0],T=[16,16,16,16,16,16,16,16,17,17,17,17,18,18,18,18,19,19,19,19,20,20,20,20,21,21,21,21,16,72,78],U=[1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0],F=[16,16,16,16,17,17,18,18,19,19,20,20,21,21,22,22,23,23,24,24,25,25,26,26,27,27,28,28,29,29,64,64];t.exports=function(e,t,i,n,a,r,o,s){var f,l,d,c,u,h,b,m,w,k=s.bits,_=0,g=0,v=0,p=0,x=0,y=0,S=0,E=0,Z=0,B=0,A=null,z=0,R=new I.Buf16(16),N=new I.Buf16(16),O=null,C=0;for(_=0;_<=15;_++)R[_]=0;for(g=0;g<n;g++)R[t[i+g]]++;for(x=k,p=15;1<=p&&0===R[p];p--);if(p<x&&(x=p),0===p)return a[r++]=20971520,a[r++]=20971520,s.bits=1,0;for(v=1;v<p&&0===R[v];v++);for(x<v&&(x=v),_=E=1;_<=15;_++)if(E<<=1,(E-=R[_])<0)return-1;if(0<E&&(0===e||1!==p))return-1;for(N[1]=0,_=1;_<15;_++)N[_+1]=N[_]+R[_];for(g=0;g<n;g++)0!==t[i+g]&&(o[N[t[i+g]]++]=g);if(0===e?(A=O=o,h=19):1===e?(A=D,z-=257,O=T,C-=257,h=256):(A=U,O=F,h=-1),_=v,u=r,S=g=B=0,d=-1,c=(Z=1<<(y=x))-1,1===e&&852<Z||2===e&&592<Z)return 1;for(;;){for(b=_-S,o[g]<h?(m=0,w=o[g]):o[g]>h?(m=O[C+o[g]],w=A[z+o[g]]):(m=96,w=0),f=1<<_-S,v=l=1<<y;a[u+(B>>S)+(l-=f)]=b<<24|m<<16|w|0,0!==l;);for(f=1<<_-1;B&f;)f>>=1;if(0!==f?(B&=f-1,B+=f):B=0,g++,0==--R[_]){if(_===p)break;_=t[i+o[g]]}if(x<_&&(B&c)!==d){for(0===S&&(S=x),u+=v,E=1<<(y=_-S);y+S<p&&!((E-=R[y+S])<=0);)y++,E<<=1;if(Z+=1<<y,1===e&&852<Z||2===e&&592<Z)return 1;a[d=B&c]=x<<24|y<<16|u-r|0}}return 0!==B&&(a[u+B]=_-S<<24|64<<16|0),s.bits=x,0}},{"../utils/common":1}],10:[function(e,t,i){"use strict";t.exports={2:"need dictionary",1:"stream end",0:"","-1":"file error","-2":"stream error","-3":"data error","-4":"insufficient memory","-5":"buffer error","-6":"incompatible version"}},{}],11:[function(e,t,i){"use strict";t.exports=function(){this.input=null,this.next_in=0,this.avail_in=0,this.total_in=0,this.output=null,this.next_out=0,this.avail_out=0,this.total_out=0,this.msg="",this.state=null,this.data_type=2,this.adler=0}},{}],"/lib/inflate.js":[function(e,t,i){"use strict";var c=e("./zlib/inflate"),u=e("./utils/common"),h=e("./utils/strings"),b=e("./zlib/constants"),n=e("./zlib/messages"),a=e("./zlib/zstream"),r=e("./zlib/gzheader"),m=Object.prototype.toString;function o(e){if(!(this instanceof o))return new o(e);this.options=u.assign({chunkSize:16384,windowBits:0,to:""},e||{});var t=this.options;t.raw&&0<=t.windowBits&&t.windowBits<16&&(t.windowBits=-t.windowBits,0===t.windowBits&&(t.windowBits=-15)),!(0<=t.windowBits&&t.windowBits<16)||e&&e.windowBits||(t.windowBits+=32),15<t.windowBits&&t.windowBits<48&&0==(15&t.windowBits)&&(t.windowBits|=15),this.err=0,this.msg="",this.ended=!1,this.chunks=[],this.strm=new a,this.strm.avail_out=0;var i=c.inflateInit2(this.strm,t.windowBits);if(i!==b.Z_OK)throw new Error(n[i]);if(this.header=new r,c.inflateGetHeader(this.strm,this.header),t.dictionary&&("string"==typeof t.dictionary?t.dictionary=h.string2buf(t.dictionary):"[object ArrayBuffer]"===m.call(t.dictionary)&&(t.dictionary=new Uint8Array(t.dictionary)),t.raw&&(i=c.inflateSetDictionary(this.strm,t.dictionary))!==b.Z_OK))throw new Error(n[i])}function s(e,t){var i=new o(t);if(i.push(e,!0),i.err)throw i.msg||n[i.err];return i.result}o.prototype.push=function(e,t){var i,n,a,r,o,s=this.strm,f=this.options.chunkSize,l=this.options.dictionary,d=!1;if(this.ended)return!1;n=t===~~t?t:!0===t?b.Z_FINISH:b.Z_NO_FLUSH,"string"==typeof e?s.input=h.binstring2buf(e):"[object ArrayBuffer]"===m.call(e)?s.input=new Uint8Array(e):s.input=e,s.next_in=0,s.avail_in=s.input.length;do{if(0===s.avail_out&&(s.output=new u.Buf8(f),s.next_out=0,s.avail_out=f),(i=c.inflate(s,b.Z_NO_FLUSH))===b.Z_NEED_DICT&&l&&(i=c.inflateSetDictionary(this.strm,l)),i===b.Z_BUF_ERROR&&!0===d&&(i=b.Z_OK,d=!1),i!==b.Z_STREAM_END&&i!==b.Z_OK)return this.onEnd(i),!(this.ended=!0);s.next_out&&(0!==s.avail_out&&i!==b.Z_STREAM_END&&(0!==s.avail_in||n!==b.Z_FINISH&&n!==b.Z_SYNC_FLUSH)||("string"===this.options.to?(a=h.utf8border(s.output,s.next_out),r=s.next_out-a,o=h.buf2string(s.output,a),s.next_out=r,s.avail_out=f-r,r&&u.arraySet(s.output,s.output,a,r,0),this.onData(o)):this.onData(u.shrinkBuf(s.output,s.next_out)))),0===s.avail_in&&0===s.avail_out&&(d=!0)}while((0<s.avail_in||0===s.avail_out)&&i!==b.Z_STREAM_END);return i===b.Z_STREAM_END&&(n=b.Z_FINISH),n===b.Z_FINISH?(i=c.inflateEnd(this.strm),this.onEnd(i),this.ended=!0,i===b.Z_OK):n!==b.Z_SYNC_FLUSH||(this.onEnd(b.Z_OK),!(s.avail_out=0))},o.prototype.onData=function(e){this.chunks.push(e)},o.prototype.onEnd=function(e){e===b.Z_OK&&("string"===this.options.to?this.result=this.chunks.join(""):this.result=u.flattenChunks(this.chunks)),this.chunks=[],this.err=e,this.msg=this.strm.msg},i.Inflate=o,i.inflate=s,i.inflateRaw=function(e,t){return(t=t||{}).raw=!0,s(e,t)},i.ungzip=s},{"./utils/common":1,"./utils/strings":2,"./zlib/constants":4,"./zlib/gzheader":6,"./zlib/inflate":8,"./zlib/messages":10,"./zlib/zstream":11}]},{},[])("/lib/inflate.js")}); |