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-rw-r--r--lib/pull-many-v2.js104
1 files changed, 0 insertions, 104 deletions
diff --git a/lib/pull-many-v2.js b/lib/pull-many-v2.js
deleted file mode 100644
index feb68ce..0000000
--- a/lib/pull-many-v2.js
+++ /dev/null
@@ -1,104 +0,0 @@
-// All credit to https://github.com/pull-stream/pull-many/blob/master/index.js
-// Edits have been made to distinguish the original stream that each object came from,
-// and to be able to end each stream independently
-
-module.exports = function (ary) {
-
- var capped = !!ary
- var inputs = (ary || []).map(create), i = 0, abort, cb
-
- function create (stream) {
- return {ready: false, reading: false, ended: false, read: stream, data: null}
- }
-
- function check () {
- if(!cb) return
- clean()
- var l = inputs.length
- var _cb = cb
- if(l === 0 && (abort || capped)) {
- cb = null; _cb(abort || true)
- return
- }
-
- //scan the inputs to check whether there is one we can use.
- for(var j = 0; j < l; j++) {
- var current = inputs[(i + j) % l]
- if(current.ready && !current.ended) {
- var data = { // [EDIT] keep track of which exact source the data came from
- data: current.data,
- source: current.read.streamName
- }
- current.ready = false
- current.data = null
- i ++; cb = null
- return _cb(null, data)
- }
- }
- }
-
- function clean () {
- var l = inputs.length
- //iterate backwards so that we can remove items.
- while(l--) {
- if(inputs[l].ended)
- inputs.splice(l, 1)
- }
- }
-
- function next () {
- var l = inputs.length
- while(l--)
- (function (current) {
- //read the next item if we aren't already
- if(l > inputs.length) throw new Error('this should never happen')
- if(current.reading || current.ended || current.ready) return
- current.reading = true
- var sync = true
- current.read(abort, function next (end, data) {
- current.data = data
- current.ready = true
- current.reading = false
-
- if(end === true || abort) {
- current.ended = true
- if(current.read.streamName) {
- var timestamp = new Date();
- console.log("[pull-many-v2] [" + timestamp.toISOString() + "] " + "reached the end of stream " + current.read.streamName);
- }
- }
- else if(end) abort = current.ended = end
- //check whether we need to abort this stream.
- if(abort && !end) current.read(abort, next)
- if(!sync) check()
- })
- sync = false
- })(inputs[l])
-
- //scan the feed
- check()
- }
-
- function read (_abort, _cb) {
- abort = abort || _abort; cb = _cb; next()
- }
-
- read.add = function (stream) {
- if(!stream) {
- //the stream will now end when all the streams end.
- capped = true
- //we just changed state, so we may need to cb
- return next()
- }
- inputs.push(create(stream))
- next()
- }
-
- read.cap = function (err) {
- read.add(null)
- }
-
- read.inputs = inputs
-
- return read
-}