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network-visualization/node_modules/map-stream/.npmignore

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+node_modules
+node_modules/*
+npm_debug.log

network-visualization/node_modules/map-stream/.travis.yml

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+language: node_js
+node_js:
+  - 0.6
+  - 0.8

network-visualization/node_modules/map-stream/LICENCE

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+Copyright (c) 2011 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.

network-visualization/node_modules/map-stream/examples/pretty.js

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+
+var inspect = require('util').inspect
+
+if(!module.parent) {
+  var map = require('..')             //load map-stream
+  var es = require('event-stream')    //load event-stream
+  es.pipe(                            //pipe joins streams together
+    process.openStdin(),              //open stdin
+    es.split(),                       //split stream to break on newlines
+    map(function (data, callback) {   //turn this async function into a stream
+      var j
+      try {
+        j = JSON.parse(data)          //try to parse input into json
+      } catch (err) {
+        return callback(null, data)   //if it fails just pass it anyway
+      }
+      callback(null, inspect(j))      //render it nicely
+    }),
+    process.stdout                    // pipe it to stdout !
+    )
+  }
+
+// run this
+//
+// curl -sS registry.npmjs.org/event-stream | node pretty.js
+//

network-visualization/node_modules/map-stream/index.js

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+//filter will reemit the data if cb(err,pass) pass is truthy
+
+// reduce is more tricky
+// maybe we want to group the reductions or emit progress updates occasionally
+// the most basic reduce just emits one 'data' event after it has recieved 'end'
+
+
+var Stream = require('stream').Stream
+
+
+//create an event stream and apply function to each .write
+//emitting each response as data
+//unless it's an empty callback
+
+module.exports = function (mapper, opts) {
+
+  var stream = new Stream()
+    , self = this
+    , inputs = 0
+    , outputs = 0
+    , ended = false
+    , paused = false
+    , destroyed = false
+    , lastWritten = 0
+    , inNext = false
+
+  this.opts = opts || {};
+  var errorEventName = this.opts.failures ? 'failure' : 'error';
+
+  // Items that are not ready to be written yet (because they would come out of
+  // order) get stuck in a queue for later.
+  var writeQueue = {}
+
+  stream.writable = true
+  stream.readable = true
+
+  function queueData (data, number) {
+    var nextToWrite = lastWritten + 1
+
+    if (number === nextToWrite) {
+      // If it's next, and its not undefined write it
+      if (data !== undefined) {
+        stream.emit.apply(stream, ['data', data])
+      }
+      lastWritten ++
+      nextToWrite ++
+    } else {
+      // Otherwise queue it for later.
+      writeQueue[number] = data
+    }
+
+    // If the next value is in the queue, write it
+    if (writeQueue.hasOwnProperty(nextToWrite)) {
+      var dataToWrite = writeQueue[nextToWrite]
+      delete writeQueue[nextToWrite]
+      return queueData(dataToWrite, nextToWrite)
+    }
+
+    outputs ++
+    if(inputs === outputs) {
+      if(paused) paused = false, stream.emit('drain') //written all the incoming events
+      if(ended) end()
+    }
+  }
+
+  function next (err, data, number) {
+    if(destroyed) return
+    inNext = true
+
+    if (!err || self.opts.failures) {
+      queueData(data, number)
+    }
+
+    if (err) {
+      stream.emit.apply(stream, [ errorEventName, err ]);
+    }
+
+    inNext = false;
+  }
+
+  // Wrap the mapper function by calling its callback with the order number of
+  // the item in the stream.
+  function wrappedMapper (input, number, callback) {
+    return mapper.call(null, input, function(err, data){
+      callback(err, data, number)
+    })
+  }
+
+  stream.write = function (data) {
+    if(ended) throw new Error('map stream is not writable')
+    inNext = false
+    inputs ++
+
+    try {
+      //catch sync errors and handle them like async errors
+      var written = wrappedMapper(data, inputs, next)
+      paused = (written === false)
+      return !paused
+    } catch (err) {
+      //if the callback has been called syncronously, and the error
+      //has occured in an listener, throw it again.
+      if(inNext)
+        throw err
+      next(err)
+      return !paused
+    }
+  }
+
+  function end (data) {
+    //if end was called with args, write it, 
+    ended = true //write will emit 'end' if ended is true
+    stream.writable = false
+    if(data !== undefined) {
+      return queueData(data, inputs)
+    } else if (inputs == outputs) { //wait for processing 
+      stream.readable = false, stream.emit('end'), stream.destroy() 
+    }
+  }
+
+  stream.end = function (data) {
+    if(ended) return
+    end()
+  }
+
+  stream.destroy = function () {
+    ended = destroyed = true
+    stream.writable = stream.readable = paused = false
+    process.nextTick(function () {
+      stream.emit('close')
+    })
+  }
+  stream.pause = function () {
+    paused = true
+  }
+
+  stream.resume = function () {
+    paused = false
+  }
+
+  return stream
+}
+
+
+
+

network-visualization/node_modules/map-stream/package.json

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+{
+  "name": "map-stream",
+  "version": "0.1.0",
+  "description": "construct pipes of streams of events",
+  "homepage": "http://github.com/dominictarr/map-stream",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/dominictarr/map-stream.git"
+  },
+  "dependencies": {
+  },
+  "devDependencies": {
+    "asynct": "*",
+    "it-is": "1",
+    "ubelt": "~2.9",
+    "stream-spec": "~0.2",
+    "event-stream": "~2.1",
+    "from": "0.0.2"
+  },
+  "scripts": {
+    "test": "asynct test/"
+  },
+  "author": "Dominic Tarr <dominic.tarr@gmail.com> (http://dominictarr.com)"
+}

network-visualization/node_modules/map-stream/readme.markdown

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+# MapStream
+
+Refactored out of [event-stream](https://github.com/dominictarr/event-stream)
+
+##map (asyncFunction[, options])
+
+Create a through stream from an asyncronous function.  
+
+``` js
+var map = require('map-stream')
+
+map(function (data, callback) {
+  //transform data
+  // ...
+  callback(null, data)
+})
+
+```
+
+Each map MUST call the callback. It may callback with data, with an error or with no arguments, 
+
+  * `callback()` drop this data.  
+    this makes the map work like `filter`,  
+    note:`callback(null,null)` is not the same, and will emit `null`
+
+  * `callback(null, newData)` turn data into newData
+    
+  * `callback(error)` emit an error for this item.
+
+>Note: if a callback is not called, `map` will think that it is still being processed,   
+>every call must be answered or the stream will not know when to end.  
+>
+>Also, if the callback is called more than once, every call but the first will be ignored.
+
+##Options 
+
+ * `failures` - `boolean` continue mapping even if error occured. On error `map-stream` will emit `failure` event. (default: `false`)

network-visualization/node_modules/map-stream/test/simple-map.asynct.js

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+'use strict';
+
+var map = require('../')
+  , it = require('it-is')
+  , u = require('ubelt')
+  , spec = require('stream-spec')
+  , from = require('from')
+  , Stream = require('stream')
+  , es = require('event-stream')
+
+//REFACTOR THIS TEST TO USE es.readArray and es.writeArray
+
+function writeArray(array, stream) {
+
+  array.forEach( function (j) {
+    stream.write(j)
+  })
+  stream.end()
+
+}
+
+function readStream(stream, done) {
+
+  var array = [] 
+  stream.on('data', function (data) {
+    array.push(data)
+  })
+  stream.on('error', done)
+  stream.on('end', function (data) {
+    done(null, array)
+  })
+
+} 
+
+//call sink on each write,
+//and complete when finished.
+
+function pauseStream (prob, delay) { 
+  var pauseIf = (
+      'number' == typeof prob 
+    ? function () {
+        return Math.random() < prob
+      } 
+    : 'function' == typeof prob 
+    ? prob
+    : 0.1
+  )
+  var delayer = ( 
+      !delay 
+    ? process.nextTick
+    : 'number' == typeof delay 
+    ? function (next) { setTimeout(next, delay) }
+    : delay
+  )   
+
+  return es.through(function (data) {    
+    if(!this.paused && pauseIf()) {
+      console.log('PAUSE STREAM PAUSING')
+      this.pause()
+      var self = this
+      delayer(function () {
+        console.log('PAUSE STREAM RESUMING')
+        self.resume()
+      })
+    }
+    console.log("emit ('data', " + data + ')')
+    this.emit('data', data) 
+  })
+}
+
+exports ['simple map applied to a stream'] = function (test) {
+
+  var input = [1,2,3,7,5,3,1,9,0,2,4,6]
+  //create event stream from
+
+  var doubler = map(function (data, cb) {
+    cb(null, data * 2)
+  })
+
+  spec(doubler).through().validateOnExit()
+
+  //a map is only a middle man, so it is both readable and writable
+  
+  it(doubler).has({
+    readable: true,
+    writable: true,   
+  })
+
+  readStream(doubler, function (err, output) {
+    it(output).deepEqual(input.map(function (j) {
+      return j * 2
+    }))
+//    process.nextTick(x.validate)
+    test.done()
+  })
+  
+  writeArray(input, doubler)
+  
+}
+
+exports ['stream comes back in the correct order'] = function (test) {
+  var input = [3, 2, 1]
+
+  var delayer = map(function(data, cb){
+    setTimeout(function () {
+      cb(null, data)
+    }, 100 * data)
+  })
+
+  readStream(delayer, function (err, output) {
+    it(output).deepEqual(input)
+    test.done()
+  })
+
+  writeArray(input, delayer)
+}
+
+exports ['continues on error event with failures `true`'] = function (test) {
+  var input = [1, 2, 3]
+
+  var delayer = map(function(data, cb){
+    cb(new Error('Something gone wrong'), data)
+  }, { failures: true })
+
+  readStream(delayer, function (err, output) {
+    it(output).deepEqual(input)
+    test.done()
+  })
+
+  writeArray(input, delayer)
+}
+
+exports['pipe two maps together'] = function (test) {
+
+  var input = [1,2,3,7,5,3,1,9,0,2,4,6]
+  //create event stream from
+  function dd (data, cb) {
+    cb(null, data * 2)
+  }
+  var doubler1 = map(dd), doubler2 = map(dd)
+
+  doubler1.pipe(doubler2)
+  
+  spec(doubler1).through().validateOnExit()
+  spec(doubler2).through().validateOnExit()
+
+  readStream(doubler2, function (err, output) {
+    it(output).deepEqual(input.map(function (j) {
+      return j * 4
+    }))
+    test.done()
+  })
+  
+  writeArray(input, doubler1)
+
+}
+
+//next:
+//
+// test pause, resume and drian.
+//
+
+// then make a pipe joiner:
+//
+// plumber (evStr1, evStr2, evStr3, evStr4, evStr5)
+//
+// will return a single stream that write goes to the first 
+
+exports ['map will not call end until the callback'] = function (test) {
+
+  var ticker = map(function (data, cb) {
+    process.nextTick(function () {
+      cb(null, data * 2)
+    })
+  })
+
+  spec(ticker).through().validateOnExit()
+
+  ticker.write('x')
+  ticker.end() 
+
+  ticker.on('end', function () {
+    test.done()
+  })
+}
+
+exports ['emit failures with opts.failures === `ture`'] = function (test) {
+
+  var err = new Error('INTENSIONAL ERROR')
+    , mapper = 
+  map(function () {
+    throw err
+  }, { failures: true })
+
+  mapper.on('failure', function (_err) {
+    it(_err).equal(err)  
+    test.done()
+  })
+
+  mapper.write('hello')
+
+}
+
+exports ['emit error thrown'] = function (test) {
+
+  var err = new Error('INTENSIONAL ERROR')
+    , mapper = 
+  map(function () {
+    throw err
+  })
+
+  mapper.on('error', function (_err) {
+    it(_err).equal(err)  
+    test.done()
+  })
+
+  mapper.write('hello')
+
+}
+
+exports ['emit error calledback'] = function (test) {
+
+  var err = new Error('INTENSIONAL ERROR')
+    , mapper = 
+  map(function (data, callback) {
+    callback(err)
+  })
+
+  mapper.on('error', function (_err) {
+    it(_err).equal(err)  
+    test.done()
+  })
+
+  mapper.write('hello')
+
+}
+
+exports ['do not emit drain if not paused'] = function (test) {
+
+  var maps = map(function (data, callback) {
+    u.delay(callback)(null, 1)
+    return true
+  })
+  
+  spec(maps).through().pausable().validateOnExit()
+
+  maps.on('drain', function () {
+    it(false).ok('should not emit drain unless the stream is paused')
+  })
+
+  it(maps.write('hello')).equal(true)
+  it(maps.write('hello')).equal(true)
+  it(maps.write('hello')).equal(true)
+  setTimeout(function () {maps.end()},10)
+  maps.on('end', test.done)
+}
+
+exports ['emits drain if paused, when all '] = function (test) {
+  var active = 0
+  var drained = false
+  var maps = map(function (data, callback) {
+    active ++
+    u.delay(function () {
+      active --
+      callback(null, 1)
+    })()
+    console.log('WRITE', false)
+    return false
+  })
+
+  spec(maps).through().validateOnExit()
+
+  maps.on('drain', function () {
+    drained = true
+    it(active).equal(0, 'should emit drain when all maps are done')
+  })
+
+  it(maps.write('hello')).equal(false)
+  it(maps.write('hello')).equal(false)
+  it(maps.write('hello')).equal(false)
+
+  process.nextTick(function () {maps.end()},10)
+
+  maps.on('end', function () {
+    console.log('end')
+    it(drained).ok('shoud have emitted drain before end')
+    test.done() 
+  })
+
+}
+
+exports ['map applied to a stream with filtering'] = function (test) {
+
+  var input = [1,2,3,7,5,3,1,9,0,2,4,6]
+
+  var doubler = map(function (data, callback) {
+    if (data % 2)
+      callback(null, data * 2)
+    else
+      callback()
+  })
+  
+  readStream(doubler, function (err, output) {
+    it(output).deepEqual(input.filter(function (j) {
+      return j % 2
+    }).map(function (j) {
+      return j * 2
+    }))
+    test.done()
+  })
+  
+  spec(doubler).through().validateOnExit()
+
+  writeArray(input, doubler)
+  
+}
+
+