aaac7fed
 liuqimichale
add
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module.exports = collect
function collect (stream) {
if (stream._collected) return
if (stream._paused) return stream.on('resume', collect.bind(null, stream))
stream._collected = true
stream.pause()
stream.on('data', save)
stream.on('end', save)
var buf = []
function save (b) {
if (typeof b === 'string') b = new Buffer(b)
if (Buffer.isBuffer(b) && !b.length) return
buf.push(b)
}
stream.on('entry', saveEntry)
var entryBuffer = []
function saveEntry (e) {
collect(e)
entryBuffer.push(e)
}
stream.on('proxy', proxyPause)
function proxyPause (p) {
p.pause()
}
// replace the pipe method with a new version that will
// unlock the buffered stuff. if you just call .pipe()
// without a destination, then it'll re-play the events.
stream.pipe = (function (orig) {
return function (dest) {
// console.error(' === open the pipes', dest && dest.path)
// let the entries flow through one at a time.
// Once they're all done, then we can resume completely.
var e = 0
;(function unblockEntry () {
var entry = entryBuffer[e++]
// console.error(" ==== unblock entry", entry && entry.path)
if (!entry) return resume()
entry.on('end', unblockEntry)
if (dest) dest.add(entry)
else stream.emit('entry', entry)
})()
function resume () {
stream.removeListener('entry', saveEntry)
stream.removeListener('data', save)
stream.removeListener('end', save)
stream.pipe = orig
if (dest) stream.pipe(dest)
buf.forEach(function (b) {
if (b) stream.emit('data', b)
else stream.emit('end')
})
stream.resume()
}
return dest
}
})(stream.pipe)
}
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