53 lines
1.5 KiB
JavaScript
53 lines
1.5 KiB
JavaScript
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var through = require('through2')
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var parse = require('tar').Parse
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var Vinyl = require('vinyl')
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var path = require('path')
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var streamifier = require('streamifier')
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var es = require('event-stream')
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module.exports = function () {
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return through.obj(function (file, enc, callback) {
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var contentsStream
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if (file.isNull()) {
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return this.push(file)
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}
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if (file.isStream()) {
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contentsStream = file.contents
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}
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if (file.isBuffer()) {
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contentsStream = streamifier.createReadStream(file.contents)
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}
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contentsStream
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.pipe(parse())
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.on('entry', function (entry) {
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if (entry.props.type !== '0') return
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// Accumulate the contents and emit a file with a Buffer of the contents.
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//
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// I tried returning the entry as the contents of each file but that
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// seemed unreliable, presumably each entry stream is intended to be
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// consumed *as we read* the source archive, so handing out individual
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// streams to consumers means that we're depending on them consuming
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// each stream in sequence.
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entry.pipe(es.wait(function (err, data) {
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if (err) return this.emit('error', err)
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this.push(new Vinyl({
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contents: new Buffer(data),
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path: path.normalize(path.dirname(file.path) + '/' + entry.props.path),
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base: file.base,
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cwd: file.cwd
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}))
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}.bind(this)))
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}.bind(this))
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.on('end', function () {
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callback()
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})
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})
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}
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