71 lines
1.7 KiB
JavaScript
71 lines
1.7 KiB
JavaScript
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module.exports = collect
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function collect (stream) {
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if (stream._collected) return
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if (stream._paused) return stream.on('resume', collect.bind(null, stream))
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stream._collected = true
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stream.pause()
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stream.on('data', save)
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stream.on('end', save)
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var buf = []
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function save (b) {
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if (typeof b === 'string') b = new Buffer(b)
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if (Buffer.isBuffer(b) && !b.length) return
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buf.push(b)
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}
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stream.on('entry', saveEntry)
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var entryBuffer = []
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function saveEntry (e) {
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collect(e)
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entryBuffer.push(e)
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}
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stream.on('proxy', proxyPause)
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function proxyPause (p) {
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p.pause()
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}
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// replace the pipe method with a new version that will
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// unlock the buffered stuff. if you just call .pipe()
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// without a destination, then it'll re-play the events.
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stream.pipe = (function (orig) {
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return function (dest) {
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// console.error(' === open the pipes', dest && dest.path)
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// let the entries flow through one at a time.
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// Once they're all done, then we can resume completely.
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var e = 0
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;(function unblockEntry () {
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var entry = entryBuffer[e++]
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// console.error(" ==== unblock entry", entry && entry.path)
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if (!entry) return resume()
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entry.on('end', unblockEntry)
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if (dest) dest.add(entry)
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else stream.emit('entry', entry)
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})()
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function resume () {
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stream.removeListener('entry', saveEntry)
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stream.removeListener('data', save)
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stream.removeListener('end', save)
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stream.pipe = orig
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if (dest) stream.pipe(dest)
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buf.forEach(function (b) {
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if (b) stream.emit('data', b)
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else stream.emit('end')
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})
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stream.resume()
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}
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return dest
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}
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})(stream.pipe)
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}
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