UNPKG

fast-extract

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Extract contents from various archive types (tar, tar.bz2, tar.gz, tar.xz, tgz, zip)

59 lines (58 loc) 1.68 kB
import TarIterator from 'tar-iterator'; import { PassThrough, Transform } from '../../compat/stream.js'; let TarTransform = class TarTransform extends Transform { _transform(chunk, encoding, callback) { if (this._stream) { this._stream.write(chunk, encoding, callback); return; } this._stream = new PassThrough(); this._iterator = new TarIterator(this._stream); this._iterator.forEach((entry)=>{ this.push(entry); }, { concurrency: 1 }, (err)=>{ if (!this._iterator) return; err || this.push(null); this._stream = null; this._iterator.destroy(); this._iterator = null; this._callback ? this._callback(err) : this.end(err); this._callback = null; }); this._stream.write(chunk, encoding, callback); } _flush(callback) { if (!this._stream) { callback(); return; } this._callback = callback; this._stream.end(); this._stream = null; } destroy(error) { if (this._stream) { this._stream.end(); this._stream = null; } if (this._iterator) { const iterator = this._iterator; this._iterator = null; iterator.destroy(error); this.end(error); } return this; } constructor(options){ options = options ? { ...options, objectMode: true } : { objectMode: true }; super(options); } }; export { TarTransform as default };