diff options
author | Minteck <contact@minteck.org> | 2023-01-10 14:54:04 +0100 |
---|---|---|
committer | Minteck <contact@minteck.org> | 2023-01-10 14:54:04 +0100 |
commit | 99c1d9af689e5325f3cf535c4007b3aeb8325229 (patch) | |
tree | e663b3c2ebdbd67c818ac0c5147f0ce1d2463cda /school/node_modules/pako/lib/utils/common.js | |
parent | 9871b03912fc28ad38b4037ebf26a78aa937baba (diff) | |
download | pluralconnect-99c1d9af689e5325f3cf535c4007b3aeb8325229.tar.gz pluralconnect-99c1d9af689e5325f3cf535c4007b3aeb8325229.tar.bz2 pluralconnect-99c1d9af689e5325f3cf535c4007b3aeb8325229.zip |
Update - This is an automated commit
Diffstat (limited to 'school/node_modules/pako/lib/utils/common.js')
-rw-r--r-- | school/node_modules/pako/lib/utils/common.js | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/school/node_modules/pako/lib/utils/common.js b/school/node_modules/pako/lib/utils/common.js new file mode 100644 index 0000000..58be4be --- /dev/null +++ b/school/node_modules/pako/lib/utils/common.js @@ -0,0 +1,105 @@ +'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); |