package/package.json000644 001750 000144 0000001053 12534261153013014 0ustar00000000 000000 { "name": "stream-combiner", "version": "0.2.2", "homepage": "https://github.com/dominictarr/stream-combiner", "repository": { "type": "git", "url": "git://github.com/dominictarr/stream-combiner.git" }, "dependencies": { "duplexer": "~0.1.1", "through": "~2.3.4" }, "devDependencies": { "tape": "~2.3.0", "event-stream": "~3.0.7" }, "scripts": { "test": "set -e; for t in test/*.js; do node $t; done" }, "author": "'Dominic Tarr' (http://dominictarr.com)", "license": "MIT" } package/.npmignore000644 001750 000144 0000000052 12343202126012514 0ustar00000000 000000 node_modules node_modules/* npm_debug.log package/README.md000644 001750 000144 0000002614 12534261143012010 0ustar00000000 000000 # stream-combiner [![npm version](https://img.shields.io/npm/v/stream-combiner.svg)](https://npmjs.org/package/stream-combiner) [![Travis CI](https://travis-ci.org/dominictarr/stream-combiner.svg)](https://travis-ci.org/dominictarr/stream-combiner) ## Combine (stream1,...,streamN) Turn a pipeline into a single stream. `Combine` returns a stream that writes to the first stream and reads from the last stream. Listening for 'error' will recieve errors from all streams inside the pipe. ```js var Combine = require('stream-combiner') var es = require('event-stream') Combine( // connect streams together with `pipe` process.openStdin(), // open stdin es.split(), // split stream to break on newlines es.map(function (data, callback) { // turn this async function into a stream var repr = util.inspect(JSON.parse(data)) // render it nicely callback(null, repr) }), process.stdout // pipe it to stdout ! ) ``` Can also be called with an array: ```js var combinedStream = Combine([ stream1, stream2, ]); ``` Or to combine gulp plugins: ```js function coffeePipe() { return Combine( coffeescript(), coffeelint.reporter('fail').on('error', function(){ gutil.beep() gulp.run('lint') }) } //usage: gulp.src().pipe(coffeePipe()); ``` ## License MIT package/LICENSE000644 001750 000144 0000002061 12343202126011524 0ustar00000000 000000 Copyright (c) 2012 'Dominic Tarr' Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. package/index.js000644 001750 000144 0000001777 12343202126012201 0ustar00000000 000000 var duplexer = require('duplexer') var through = require('through') module.exports = function () { var streams if(arguments.length == 1 && Array.isArray(arguments[0])) { streams = arguments[0] } else { streams = [].slice.call(arguments) } if(streams.length == 0) return through() else if(streams.length == 1) return streams[0] var first = streams[0] , last = streams[streams.length - 1] , thepipe = duplexer(first, last) //pipe all the streams together function recurse (streams) { if(streams.length < 2) return streams[0].pipe(streams[1]) recurse(streams.slice(1)) } recurse(streams) function onerror () { var args = [].slice.call(arguments) args.unshift('error') thepipe.emit.apply(thepipe, args) } //es.duplex already reemits the error from the first and last stream. //add a listener for the inner streams in the pipeline. for(var i = 1; i < streams.length - 1; i ++) streams[i].on('error', onerror) return thepipe } package/.travis.yml000644 001750 000144 0000000053 12343202126012627 0ustar00000000 000000 language: node_js node_js: - 0.6 - 0.8 package/test/index.js000644 001750 000144 0000002467 12343202126013155 0ustar00000000 000000 var es = require('event-stream') var combine = require('..') var test = require('tape') test('do not duplicate errors', function (test) { var errors = 0; var pipe = combine( es.through(function(data) { return this.emit('data', data); }), es.through(function(data) { return this.emit('error', new Error(data)); }) ) pipe.on('error', function(err) { errors++ test.ok(errors, 'expected error count') process.nextTick(function () { return test.end(); }) }) return pipe.write('meh'); }) test('3 pipe do not duplicate errors', function (test) { var errors = 0; var pipe = combine( es.through(function(data) { return this.emit('data', data); }), es.through(function(data) { return this.emit('error', new Error(data)); }), es.through() ) pipe.on('error', function(err) { errors++ test.ok(errors, 'expected error count') process.nextTick(function () { return test.end(); }) }) return pipe.write('meh'); }) test('0 argument through stream', function (test) { test.plan(3) var pipe = combine() , expected = [ 'beep', 'boop', 'robots' ] pipe.pipe(es.through(function(data) { test.equal(data, expected.shift()) })) pipe.write('beep') pipe.write('boop') pipe.end('robots') })