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alt-nodejs6
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root
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usr
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npm
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node_modules.bundled
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tar
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extract.js
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// give it a tarball and a path, and it'll dump the contents module.exports = Extract var tar = require("../tar.js") , fstream = require("fstream") , inherits = require("inherits") , path = require("path") function Extract (opts) { if (!(this instanceof Extract)) return new Extract(opts) tar.Parse.apply(this) if (typeof opts !== "object") { opts = { path: opts } } // better to drop in cwd? seems more standard. opts.path = opts.path || path.resolve("node-tar-extract") opts.type = "Directory" opts.Directory = true // similar to --strip or --strip-components opts.strip = +opts.strip if (!opts.strip || opts.strip <= 0) opts.strip = 0 this._fst = fstream.Writer(opts) this.pause() var me = this // Hardlinks in tarballs are relative to the root // of the tarball. So, they need to be resolved against // the target directory in order to be created properly. me.on("entry", function (entry) { // if there's a "strip" argument, then strip off that many // path components. if (opts.strip) { var p = entry.path.split("/").slice(opts.strip).join("/") entry.path = entry.props.path = p if (entry.linkpath) { var lp = entry.linkpath.split("/").slice(opts.strip).join("/") entry.linkpath = entry.props.linkpath = lp } } if (entry.type === "Link") { entry.linkpath = entry.props.linkpath = path.join(opts.path, path.join("/", entry.props.linkpath)) } if (entry.type === "SymbolicLink") { var dn = path.dirname(entry.path) || "" var linkpath = entry.props.linkpath var target = path.resolve(opts.path, dn, linkpath) if (target.indexOf(opts.path) !== 0) { linkpath = path.join(opts.path, path.join("/", linkpath)) } entry.linkpath = entry.props.linkpath = linkpath } }) this._fst.on("ready", function () { me.pipe(me._fst, { end: false }) me.resume() }) this._fst.on('error', function(err) { me.emit('error', err) }) this._fst.on('drain', function() { me.emit('drain') }) // this._fst.on("end", function () { // console.error("\nEEEE Extract End", me._fst.path) // }) this._fst.on("close", function () { // console.error("\nEEEE Extract End", me._fst.path) me.emit("finish") me.emit("end") me.emit("close") }) } inherits(Extract, tar.Parse) Extract.prototype._streamEnd = function () { var me = this if (!me._ended || me._entry) me.error("unexpected eof") me._fst.end() // my .end() is coming later. }