You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
71 lines
1.7 KiB
71 lines
1.7 KiB
4 years ago
|
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)
|
||
|
|
}
|