jiapengyu
119 lines
2.7 KiB
JavaScript
119 lines
2.7 KiB
JavaScript
import zlib from "zlib";
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import engine from "tar-stream";
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import { collectStream } from "../utils.js";
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/**
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* TAR Format Plugin
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*
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* @module plugins/tar
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* @license [MIT]{@link https://github.com/archiverjs/node-archiver/blob/master/LICENSE}
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* @copyright (c) 2012-2014 Chris Talkington, contributors.
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*/
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export default class Tar {
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/**
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* @constructor
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* @param {TarOptions} options
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*/
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constructor(options) {
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options = this.options = {
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gzip: false,
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...options,
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};
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if (typeof options.gzipOptions !== "object") {
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options.gzipOptions = {};
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}
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this.engine = engine.pack(options);
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this.compressor = false;
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if (options.gzip) {
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this.compressor = zlib.createGzip(options.gzipOptions);
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this.compressor.on("error", this._onCompressorError.bind(this));
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}
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}
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/**
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* [_onCompressorError description]
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*
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* @private
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* @param {Error} err
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* @return void
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*/
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_onCompressorError(err) {
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this.engine.emit("error", err);
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}
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/**
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* [append description]
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*
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* @param {(Buffer|Stream)} source
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* @param {TarEntryData} data
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* @param {Function} callback
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* @return void
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*/
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append(source, data, callback) {
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var self = this;
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data.mtime = data.date;
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function append(err, sourceBuffer) {
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if (err) {
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callback(err);
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return;
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}
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self.engine.entry(data, sourceBuffer, function (err) {
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callback(err, data);
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});
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}
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if (data.sourceType === "buffer") {
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append(null, source);
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} else if (data.sourceType === "stream" && data.stats) {
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data.size = data.stats.size;
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var entry = self.engine.entry(data, function (err) {
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callback(err, data);
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});
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source.pipe(entry);
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} else if (data.sourceType === "stream") {
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collectStream(source, append);
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}
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}
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/**
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* [finalize description]
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*
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* @return void
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*/
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finalize() {
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this.engine.finalize();
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}
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/**
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* [on description]
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*
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* @return this.engine
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*/
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on() {
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return this.engine.on.apply(this.engine, arguments);
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}
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/**
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* [pipe description]
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*
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* @param {String} destination
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* @param {Object} options
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* @return this.engine
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*/
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pipe(destination, options) {
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if (this.compressor) {
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return this.engine.pipe
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.apply(this.engine, [this.compressor])
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.pipe(destination, options);
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} else {
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return this.engine.pipe.apply(this.engine, arguments);
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}
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}
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/**
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* [unpipe description]
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*
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* @return this.engine
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*/
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unpipe() {
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if (this.compressor) {
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return this.compressor.unpipe.apply(this.compressor, arguments);
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} else {
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return this.engine.unpipe.apply(this.engine, arguments);
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}
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}
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}
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