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author | Minteck <nekostarfan@gmail.com> | 2021-08-24 14:41:48 +0200 |
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committer | Minteck <nekostarfan@gmail.com> | 2021-08-24 14:41:48 +0200 |
commit | d25e11bee6ca5ca523884da132d18e1400e077b9 (patch) | |
tree | 8af39fde19f7ed640a60fb397c7edd647dff1c4c /node_modules/nexe/lib/fs/bundle.js | |
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Initial commit
Diffstat (limited to 'node_modules/nexe/lib/fs/bundle.js')
-rw-r--r-- | node_modules/nexe/lib/fs/bundle.js | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/node_modules/nexe/lib/fs/bundle.js b/node_modules/nexe/lib/fs/bundle.js new file mode 100644 index 0000000..74ed317 --- /dev/null +++ b/node_modules/nexe/lib/fs/bundle.js @@ -0,0 +1,145 @@ +"use strict"; +var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) { + function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); } + return new (P || (P = Promise))(function (resolve, reject) { + function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } } + function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } } + function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); } + step((generator = generator.apply(thisArg, _arguments || [])).next()); + }); +}; +Object.defineProperty(exports, "__esModule", { value: true }); +const fs = require("fs"); +const util_1 = require("util"); +const path_1 = require("path"); +const stream_1 = require("stream"); +const MultiStream = require("multistream"); +const lstat = util_1.promisify(fs.lstat), realpath = util_1.promisify(fs.realpath), createReadStream = fs.createReadStream, stat = util_1.promisify(fs.stat); +function makeRelative(cwd, path) { + return './' + path_1.relative(cwd, path); +} +function sortEntry(a, b) { + return a[0] > b[0] ? 1 : -1; +} +function toStream(content) { + const readable = new stream_1.Readable({ + read() { + this.push(content); + this.push(null); + }, + }); + return readable; +} +exports.toStream = toStream; +function createFile(absoluteFileName) { + return __awaiter(this, void 0, void 0, function* () { + const stats = yield lstat(absoluteFileName), file = { + size: stats.size, + contents: '', + absPath: absoluteFileName, + deps: {}, + }; + if (stats.isSymbolicLink()) { + file.size = stats.size; + const [realPath, realStat] = yield Promise.all([ + realpath(absoluteFileName), + stat(absoluteFileName), + ]); + file.realPath = realPath; + file.realSize = realStat.size; + } + return file; + }); +} +class Bundle { + constructor({ cwd } = { cwd: process.cwd() }) { + this.size = 0; + this.rendered = false; + this.offset = 0; + this.index = {}; + this.files = {}; + this.streams = []; + this.cwd = cwd; + } + get list() { + return Object.keys(this.files); + } + addResource(absoluteFileName, content) { + return __awaiter(this, void 0, void 0, function* () { + if (this.files[absoluteFileName]) { + return this.size; + } + if (typeof content === 'string' || Buffer.isBuffer(content)) { + this.files[absoluteFileName] = { + size: Buffer.byteLength(content), + contents: content, + deps: {}, + absPath: absoluteFileName, + }; + } + else if (content) { + this.files[content.absPath] = content; + } + else { + this.files[absoluteFileName] = { + absPath: absoluteFileName, + contents: '', + deps: {}, + size: 0, + }; + this.files[absoluteFileName] = yield createFile(absoluteFileName); + } + return (this.size += this.files[absoluteFileName].size); + }); + } + /** + * De-dupe files by absolute path, partition by symlink/real + * Iterate over real, add entries + * Iterate over symlinks, add symlinks + */ + renderIndex() { + if (this.rendered) { + throw new Error('Bundle index already rendered'); + } + const files = Object.entries(this.files), realFiles = [], symLinks = []; + for (const entry of files) { + if (entry[1].realPath) { + symLinks.push(entry); + } + else { + realFiles.push(entry); + } + } + realFiles.sort(sortEntry); + symLinks.sort(sortEntry); + for (const [absPath, file] of realFiles) { + this.addEntry(absPath, file); + } + for (const [absPath, file] of symLinks) { + this.addEntry(file.realPath, file); + this.addEntry(absPath, file, file.realPath); + } + this.rendered = true; + return this.index; + } + /** + * Add a stream if needed and an entry with the required offset and size + * Ensure the calling order of this method is idempotent (eg, while iterating a sorted set) + * @param entryPath + * @param file + * @param useEntry + */ + addEntry(entryPath, file, useEntry) { + var _a; + const existingName = useEntry && makeRelative(this.cwd, useEntry), name = makeRelative(this.cwd, entryPath), size = (_a = file.realSize) !== null && _a !== void 0 ? _a : file.size, existingEntry = this.index[existingName !== null && existingName !== void 0 ? existingName : name]; + this.index[name] = existingEntry || [this.offset, size]; + if (!existingEntry) { + this.streams.push(() => file.contents ? toStream(file.contents) : createReadStream(file.absPath)); + this.offset += size; + } + } + toStream() { + return new MultiStream(this.streams); + } +} +exports.Bundle = Bundle; |