collective-fine-upload/static/bundle.js

Upload assets to Collective with Fine Uploader

!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var o;"undefined"!=typeof window?o=window:"undefined"!=typeof global?o=global:"undefined"!=typeof self&&(o=self),o.collectiveFineUpload=e()}}(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
'use strict';

var $ = function $(selector) {
    // thx @rnicholus!
    var selectorType = 'querySelectorAll';

    if (selector.indexOf('#') === 0) {
        selectorType = 'getElementById';
        selector = selector.substr(1, selector.length);
    }

    return document[selectorType](selector);
};

var dom_ready = require('detect-dom-ready'),
    util = require('util'),
    cookie = require('cookie-cutter'),
    log_stream = require('log-stream'),
    bole = require('bole'),
    pretty = require('bistre')(),
    log = bole('collective-fine-upload'),
    collective = require('media-collective');

bole.output({ level: 'debug', stream: pretty });
pretty.pipe(log_stream({ name: 'collective-fine-upload' }));

dom_ready(function domready() {

    var access_token = cookie.get('access_token');
    var collective_options = {
        protocol: "https"||'https',
        port: "443"||8443,
        host: processe.env.COLLECTIVE_HOST||'localhost',
        auth: {
            type: 'bearer',
            bearer: access_token
        }
    };

   var  uploader = $("#fine-uploader"),
        uploadProfileUuids = $("#upload_profile_uuids"),
        fileInput = $("#file_input"),
        app = $('#app');

    collective.json('GET', '/uploadprofile', null, collective_options).then(function(res){
        if (res.body && res.body.uploadProfiles) {
            return res.body.uploadProfiles;
        }
        return [];
    }).then(function(uploadProfiles){
        var uploadProfileOptions = uploadProfiles.map(function(uploadProfile){
            var name, uuid, optionEl;
            optionEl = document.createElement('option');
            name = uploadProfile.title;
            uuid = uploadProfile.uuid;
            optionEl.value = uuid;
            optionEl.innerHTML = name;
            return optionEl;
        });
        uploadProfileOptions.forEach(function(uploadProfileOption){
            uploadProfileUuids.appendChild(uploadProfileOption);
        });
    }).then(function(){

        var fineuploader = new qq.FineUploader({
            element: uploader,
            template: 'qq-template-gallery',
            autoUpload: true,
            chunking: {
                enabled: true
            },
            multiple: false,
            validation: {
                itemLimit: 1
            },
            request: {
                endpoint: util.format('%s://%s:%s/%s', collective_options.protocol, collective_options.host, collective_options.port, 'api/rest/asset'),
                customHeaders: {
                    authorization: 'Bearer ' + access_token
                },
                inputName: 'file',
                filenameParam: 'filename',
                params: {
                    uploadProfileUUID: uploadProfileUuids[uploadProfileUuids.selectedIndex].value
                }
            },
            callbacks: {
                onError: function(id, name, reason, req) {
                    log.error("error uploading", id, name, reason);
                },
                onAllComplete: function(succeeded, failed) {
                    log.info('succeeded: ', succeeded);
                    log.error('failed: ', failed);
                },
                onComplete: function(id, name, res, req) {
                    log.info('completed: ', id, name);
                    setTimeout(function() {
                        var uuid;
                        if (res.uuid) {
                            uuid = res.uuid || '';
                        }

                        collective.json('GET', '/asset/uuid/:uuid', {
                            uuid: uuid
                        }, collective_options).then(function(res) {
                            app.innerHTML = '<h1>Done</h1>';

                            var asset_metadata = res.body;

                            var metadata_container = document.createElement('div');

                            if (asset_metadata.name) {
                                var nameHeader = document.createElement('h1');
                                nameHeader.innerHTML = asset_metadata.name;
                                metadata_container.appendChild(nameHeader);
                            }

                            if (asset_metadata.downloadUrl) {
                                var downloadButton = document.createElement('a');
                                downloadButton.innerHTML = 'Download';
                                downloadButton.href = asset_metadata.downloadUrl;
                                metadata_container.appendChild(downloadButton);
                            }

                            if (asset_metadata.previews) {
                                var previewArea = document.createElement('div'),
                                    previewImage = document.createElement('img'),
                                    previewSelect = document.createElement('select');

                                previewSelect.addEventListener('change', function(e){
                                    var previewKey = e.srcElement.selectedOptions[0].innerHTML;
                                    previewImage.src = asset_metadata.previews[previewKey].replace('https', 'http');
                                });

                                Object.keys(asset_metadata.previews).forEach(function(previewKey, previewUrl){
                                    var optionEl = document.createElement('option');
                                    optionEl.innerHTML = previewKey;
                                    optionEl.value = asset_metadata.previews[previewKey];

                                    previewSelect.appendChild(optionEl);
                                });

                                previewImage.src = asset_metadata.previews[Object.keys(asset_metadata.previews)[0]].replace('https', 'http');

                                previewArea.appendChild(previewSelect);
                                previewArea.appendChild(previewImage);


                                metadata_container.appendChild(previewArea);
                            }

                            var metadataTable = document.createElement('table');

                            Object.keys(asset_metadata).map(function(metadataKey){
                                var row = document.createElement('tr'),
                                    key = metadataKey,
                                    val = asset_metadata[metadataKey],
                                    tdKey = document.createElement('td'),
                                    tdVal = document.createElement('td');

                                tdKey.innerHTML = key;
                                tdVal.innerHTML = val;

                                row.appendChild(tdKey);
                                row.appendChild(tdVal);

                                metadataTable.appendChild(row);
                            });

                            metadata_container.appendChild(metadataTable);
                            app.appendChild(metadata_container);


                        }, function() {

                        });

                    }, 10000);
                }
            }
        });

    }, function(err) {
        log.info('Rejected', err);
    });
});



},{"bistre":2,"bole":27,"cookie-cutter":70,"detect-dom-ready":71,"log-stream":73,"media-collective":79,"util":68}],2:[function(require,module,exports){
var combiner = require('stream-combiner')
var through2 = require('through2')
var chalk = require('chalk')
var split = require('split')

module.exports = bistre
module.exports.createStream = bistre

var poolCount = 0
var poolIndex = {}
var pool = [
    'magenta'
  , 'cyan'
  , 'blue'
  , 'green'
  , 'yellow'
]

var levels = {
    error: 'red'
  , warn: 'yellow'
  , debug: 'cyan'
  , info: 'blue'
}

function bistre(opts) {

  opts = opts || {}
  var showTime = !!opts.time

  return combiner(split()
    , through2.obj(write)
  )

  function safeparse(data) {
    try {
      data = JSON.parse(data)
    } catch(e) { }
    return data
  }

  function write(data, _, next) {
    data = safeparse(data)
    if (typeof data !== 'object') {
      this.push(data)
      this.push('\n')
      return next()
    }

    var level = levels[data.level] || 'yellow'
    var line = []
    var name = data.name ? data.name.replace(/\:[-:a-z0-9]{8,}$/g, '') : ''

    var nameColor = poolIndex[name] || (
      poolIndex[name] = pool[poolCount++ % pool.length]
    )

    if (showTime) {
      line.push(chalk.gray(data.time))
    }
    line.push(chalk[level](pad(data.level, 5)))
    line.push(chalk[nameColor](data.name + ':'))

    if (data.message) {
      line.push(data.message)
    } else
    if (data.req) {
      var req = data.req
      line.push(chalk.bold(req.method))
      line.push(chalk.green(req.url))
    } else
    if (data.err) {
      line.push(data.err.stack)
    } else {
      line.push(JSON.stringify(data, null, 2))
    }

    this.push(line.join(' '))
    this.push('\n')

    next()
  }
}

function pad(str, n) {
  str = String(str)
  while (str.length < 5) {
    str = ' ' + str
  }
  return str
}

},{"chalk":3,"split":11,"stream-combiner":13,"through2":26}],3:[function(require,module,exports){
'use strict';
var escapeStringRegexp = require('escape-string-regexp');
var ansiStyles = require('ansi-styles');
var stripAnsi = require('strip-ansi');
var hasAnsi = require('has-ansi');
var supportsColor = require('supports-color');
var defineProps = Object.defineProperties;
var chalk = module.exports;

function build(_styles) {
	var builder = function builder() {
		return applyStyle.apply(builder, arguments);
	};
	builder._styles = _styles;
	// __proto__ is used because we must return a function, but there is
	// no way to create a function with a different prototype.
	builder.__proto__ = proto;
	return builder;
}

var styles = (function () {
	var ret = {};

	ansiStyles.grey = ansiStyles.gray;

	Object.keys(ansiStyles).forEach(function (key) {
		ansiStyles[key].closeRe = new RegExp(escapeStringRegexp(ansiStyles[key].close), 'g');

		ret[key] = {
			get: function () {
				return build(this._styles.concat(key));
			}
		};
	});

	return ret;
})();

var proto = defineProps(function chalk() {}, styles);

function applyStyle() {
	// support varags, but simply cast to string in case there's only one arg
	var args = arguments;
	var argsLen = args.length;
	var str = argsLen !== 0 && String(arguments[0]);
	if (argsLen > 1) {
		// don't slice `arguments`, it prevents v8 optimizations
		for (var a = 1; a < argsLen; a++) {
			str += ' ' + args[a];
		}
	}

	if (!chalk.enabled || !str) {
		return str;
	}

	/*jshint validthis: true*/
	var nestedStyles = this._styles;

	for (var i = 0; i < nestedStyles.length; i++) {
		var code = ansiStyles[nestedStyles[i]];
		// Replace any instances already present with a re-opening code
		// otherwise only the part of the string until said closing code
		// will be colored, and the rest will simply be 'plain'.
		str = code.open + str.replace(code.closeRe, code.open) + code.close;
	}

	return str;
}

function init() {
	var ret = {};

	Object.keys(styles).forEach(function (name) {
		ret[name] = {
			get: function () {
				return build([name]);
			}
		};
	});

	return ret;
}

defineProps(chalk, init());

chalk.styles = ansiStyles;
chalk.hasColor = hasAnsi;
chalk.stripColor = stripAnsi;
chalk.supportsColor = supportsColor;

// detect mode if not set manually
if (chalk.enabled === undefined) {
	chalk.enabled = chalk.supportsColor;
}

},{"ansi-styles":4,"escape-string-regexp":5,"has-ansi":6,"strip-ansi":8,"supports-color":10}],4:[function(require,module,exports){
'use strict';
var styles = module.exports;

var codes = {
	reset: [0, 0],

	bold: [1, 22], // 21 isn't widely supported and 22 does the same thing
	dim: [2, 22],
	italic: [3, 23],
	underline: [4, 24],
	inverse: [7, 27],
	hidden: [8, 28],
	strikethrough: [9, 29],

	black: [30, 39],
	red: [31, 39],
	green: [32, 39],
	yellow: [33, 39],
	blue: [34, 39],
	magenta: [35, 39],
	cyan: [36, 39],
	white: [37, 39],
	gray: [90, 39],

	bgBlack: [40, 49],
	bgRed: [41, 49],
	bgGreen: [42, 49],
	bgYellow: [43, 49],
	bgBlue: [44, 49],
	bgMagenta: [45, 49],
	bgCyan: [46, 49],
	bgWhite: [47, 49]
};

Object.keys(codes).forEach(function (key) {
	var val = codes[key];
	var style = styles[key] = {};
	style.open = '\u001b[' + val[0] + 'm';
	style.close = '\u001b[' + val[1] + 'm';
});

},{}],5:[function(require,module,exports){
'use strict';

var matchOperatorsRe = /[|\\{}()[\]^$+*?.]/g;

module.exports = function (str) {
	if (typeof str !== 'string') {
		throw new TypeError('Expected a string');
	}

	return str.replace(matchOperatorsRe,  '\\$&');
};

},{}],6:[function(require,module,exports){
'use strict';
var ansiRegex = require('ansi-regex');
var re = new RegExp(ansiRegex().source); // remove the `g` flag
module.exports = re.test.bind(re);

},{"ansi-regex":7}],7:[function(require,module,exports){
'use strict';
module.exports = function () {
	return /\u001b\[(?:[0-9]{1,3}(?:;[0-9]{1,3})*)?[m|K]/g;
};

},{}],8:[function(require,module,exports){
'use strict';
var ansiRegex = require('ansi-regex')();

module.exports = function (str) {
	return typeof str === 'string' ? str.replace(ansiRegex, '') : str;
};

},{"ansi-regex":9}],9:[function(require,module,exports){
module.exports=require(7)
},{"/Users/mfeltner/code/widen/collective-fine-upload/node_modules/bistre/node_modules/chalk/node_modules/has-ansi/node_modules/ansi-regex/index.js":7}],10:[function(require,module,exports){
(function (process){
'use strict';
module.exports = (function () {
	if (process.argv.indexOf('--no-color') !== -1) {
		return false;
	}

	if (process.argv.indexOf('--color') !== -1) {
		return true;
	}

	if (process.stdout && !process.stdout.isTTY) {
		return false;
	}

	if (process.platform === 'win32') {
		return true;
	}

	if ('COLORTERM' in process.env) {
		return true;
	}

	if (process.env.TERM === 'dumb') {
		return false;
	}

	if (/^screen|^xterm|^vt100|color|ansi|cygwin|linux/i.test(process.env.TERM)) {
		return true;
	}

	return false;
})();

}).call(this,require('_process'))
},{"_process":48}],11:[function(require,module,exports){
//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 through = require('through')
var Decoder = require('string_decoder').StringDecoder

module.exports = split

//TODO pass in a function to map across the lines.

function split (matcher, mapper, options) {
  var decoder = new Decoder()
  var soFar = ''
  var maxLength = options && options.maxLength;
  if('function' === typeof matcher)
    mapper = matcher, matcher = null
  if (!matcher)
    matcher = /\r?\n/

  function emit(stream, piece) {
    if(mapper) {
      try {
        piece = mapper(piece)
      }
      catch (err) {
        return stream.emit('error', err)
      }
      if('undefined' !== typeof piece)
        stream.queue(piece)
    }
    else
      stream.queue(piece)
  }

  function next (stream, buffer) {
    var pieces = ((soFar != null ? soFar : '') + buffer).split(matcher)
    soFar = pieces.pop()

    if (maxLength && soFar.length > maxLength)
      stream.emit('error', new Error('maximum buffer reached'))

    for (var i = 0; i < pieces.length; i++) {
      var piece = pieces[i]
      emit(stream, piece)
    }
  }

  return through(function (b) {
    next(this, decoder.write(b))
  },
  function () {
    if(decoder.end)
      next(this, decoder.end())
    if(soFar != null)
      emit(this, soFar)
    this.queue(null)
  })
}


},{"string_decoder":65,"through":12}],12:[function(require,module,exports){
(function (process){
var Stream = require('stream')

// through
//
// a stream that does nothing but re-emit the input.
// useful for aggregating a series of changing but not ending streams into one stream)

exports = module.exports = through
through.through = through

//create a readable writable stream.

function through (write, end, opts) {
  write = write || function (data) { this.queue(data) }
  end = end || function () { this.queue(null) }

  var ended = false, destroyed = false, buffer = [], _ended = false
  var stream = new Stream()
  stream.readable = stream.writable = true
  stream.paused = false

//  stream.autoPause   = !(opts && opts.autoPause   === false)
  stream.autoDestroy = !(opts && opts.autoDestroy === false)

  stream.write = function (data) {
    write.call(this, data)
    return !stream.paused
  }

  function drain() {
    while(buffer.length && !stream.paused) {
      var data = buffer.shift()
      if(null === data)
        return stream.emit('end')
      else
        stream.emit('data', data)
    }
  }

  stream.queue = stream.push = function (data) {
//    console.error(ended)
    if(_ended) return stream
    if(data === null) _ended = true
    buffer.push(data)
    drain()
    return stream
  }

  //this will be registered as the first 'end' listener
  //must call destroy next tick, to make sure we're after any
  //stream piped from here.
  //this is only a problem if end is not emitted synchronously.
  //a nicer way to do this is to make sure this is the last listener for 'end'

  stream.on('end', function () {
    stream.readable = false
    if(!stream.writable && stream.autoDestroy)
      process.nextTick(function () {
        stream.destroy()
      })
  })

  function _end () {
    stream.writable = false
    end.call(stream)
    if(!stream.readable && stream.autoDestroy)
      stream.destroy()
  }

  stream.end = function (data) {
    if(ended) return
    ended = true
    if(arguments.length) stream.write(data)
    _end() // will emit or queue
    return stream
  }

  stream.destroy = function () {
    if(destroyed) return
    destroyed = true
    ended = true
    buffer.length = 0
    stream.writable = stream.readable = false
    stream.emit('close')
    return stream
  }

  stream.pause = function () {
    if(stream.paused) return
    stream.paused = true
    return stream
  }

  stream.resume = function () {
    if(stream.paused) {
      stream.paused = false
      stream.emit('resume')
    }
    drain()
    //may have become paused again,
    //as drain emits 'data'.
    if(!stream.paused)
      stream.emit('drain')
    return stream
  }
  return stream
}


}).call(this,require('_process'))
},{"_process":48,"stream":64}],13:[function(require,module,exports){
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
}

},{"duplexer":14,"through":15}],14:[function(require,module,exports){
var Stream = require("stream")
var writeMethods = ["write", "end", "destroy"]
var readMethods = ["resume", "pause"]
var readEvents = ["data", "close"]
var slice = Array.prototype.slice

module.exports = duplex

function forEach (arr, fn) {
    if (arr.forEach) {
        return arr.forEach(fn)
    }

    for (var i = 0; i < arr.length; i++) {
        fn(arr[i], i)
    }
}

function duplex(writer, reader) {
    var stream = new Stream()
    var ended = false

    forEach(writeMethods, proxyWriter)

    forEach(readMethods, proxyReader)

    forEach(readEvents, proxyStream)

    reader.on("end", handleEnd)

    writer.on("drain", function() {
      stream.emit("drain")
    })

    writer.on("error", reemit)
    reader.on("error", reemit)

    stream.writable = writer.writable
    stream.readable = reader.readable

    return stream

    function proxyWriter(methodName) {
        stream[methodName] = method

        function method() {
            return writer[methodName].apply(writer, arguments)
        }
    }

    function proxyReader(methodName) {
        stream[methodName] = method

        function method() {
            stream.emit(methodName)
            var func = reader[methodName]
            if (func) {
                return func.apply(reader, arguments)
            }
            reader.emit(methodName)
        }
    }

    function proxyStream(methodName) {
        reader.on(methodName, reemit)

        function reemit() {
            var args = slice.call(arguments)
            args.unshift(methodName)
            stream.emit.apply(stream, args)
        }
    }

    function handleEnd() {
        if (ended) {
            return
        }
        ended = true
        var args = slice.call(arguments)
        args.unshift("end")
        stream.emit.apply(stream, args)
    }

    function reemit(err) {
        stream.emit("error", err)
    }
}

},{"stream":64}],15:[function(require,module,exports){
module.exports=require(12)
},{"/Users/mfeltner/code/widen/collective-fine-upload/node_modules/bistre/node_modules/split/node_modules/through/index.js":12,"_process":48,"stream":64}],16:[function(require,module,exports){
(function (process){
// Copyright Joyent, Inc. and other Node contributors.
//
// 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.

// a duplex stream is just a stream that is both readable and writable.
// Since JS doesn't have multiple prototypal inheritance, this class
// prototypally inherits from Readable, and then parasitically from
// Writable.

module.exports = Duplex;

/*<replacement>*/
var objectKeys = Object.keys || function (obj) {
  var keys = [];
  for (var key in obj) keys.push(key);
  return keys;
}
/*</replacement>*/


/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

var Readable = require('./_stream_readable');
var Writable = require('./_stream_writable');

util.inherits(Duplex, Readable);

forEach(objectKeys(Writable.prototype), function(method) {
  if (!Duplex.prototype[method])
    Duplex.prototype[method] = Writable.prototype[method];
});

function Duplex(options) {
  if (!(this instanceof Duplex))
    return new Duplex(options);

  Readable.call(this, options);
  Writable.call(this, options);

  if (options && options.readable === false)
    this.readable = false;

  if (options && options.writable === false)
    this.writable = false;

  this.allowHalfOpen = true;
  if (options && options.allowHalfOpen === false)
    this.allowHalfOpen = false;

  this.once('end', onend);
}

// the no-half-open enforcer
function onend() {
  // if we allow half-open state, or if the writable side ended,
  // then we're ok.
  if (this.allowHalfOpen || this._writableState.ended)
    return;

  // no more data can be written.
  // But allow more writes to happen in this tick.
  process.nextTick(this.end.bind(this));
}

function forEach (xs, f) {
  for (var i = 0, l = xs.length; i < l; i++) {
    f(xs[i], i);
  }
}

}).call(this,require('_process'))
},{"./_stream_readable":17,"./_stream_writable":19,"_process":48,"core-util-is":20,"inherits":21}],17:[function(require,module,exports){
(function (process){
// Copyright Joyent, Inc. and other Node contributors.
//
// 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.

module.exports = Readable;

/*<replacement>*/
var isArray = require('isarray');
/*</replacement>*/


/*<replacement>*/
var Buffer = require('buffer').Buffer;
/*</replacement>*/

Readable.ReadableState = ReadableState;

var EE = require('events').EventEmitter;

/*<replacement>*/
if (!EE.listenerCount) EE.listenerCount = function(emitter, type) {
  return emitter.listeners(type).length;
};
/*</replacement>*/

var Stream = require('stream');

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

var StringDecoder;

util.inherits(Readable, Stream);

function ReadableState(options, stream) {
  options = options || {};

  // the point at which it stops calling _read() to fill the buffer
  // Note: 0 is a valid value, means "don't call _read preemptively ever"
  var hwm = options.highWaterMark;
  this.highWaterMark = (hwm || hwm === 0) ? hwm : 16 * 1024;

  // cast to ints.
  this.highWaterMark = ~~this.highWaterMark;

  this.buffer = [];
  this.length = 0;
  this.pipes = null;
  this.pipesCount = 0;
  this.flowing = false;
  this.ended = false;
  this.endEmitted = false;
  this.reading = false;

  // In streams that never have any data, and do push(null) right away,
  // the consumer can miss the 'end' event if they do some I/O before
  // consuming the stream.  So, we don't emit('end') until some reading
  // happens.
  this.calledRead = false;

  // a flag to be able to tell if the onwrite cb is called immediately,
  // or on a later tick.  We set this to true at first, becuase any
  // actions that shouldn't happen until "later" should generally also
  // not happen before the first write call.
  this.sync = true;

  // whenever we return null, then we set a flag to say
  // that we're awaiting a 'readable' event emission.
  this.needReadable = false;
  this.emittedReadable = false;
  this.readableListening = false;


  // object stream flag. Used to make read(n) ignore n and to
  // make all the buffer merging and length checks go away
  this.objectMode = !!options.objectMode;

  // Crypto is kind of old and crusty.  Historically, its default string
  // encoding is 'binary' so we have to make this configurable.
  // Everything else in the universe uses 'utf8', though.
  this.defaultEncoding = options.defaultEncoding || 'utf8';

  // when piping, we only care about 'readable' events that happen
  // after read()ing all the bytes and not getting any pushback.
  this.ranOut = false;

  // the number of writers that are awaiting a drain event in .pipe()s
  this.awaitDrain = 0;

  // if true, a maybeReadMore has been scheduled
  this.readingMore = false;

  this.decoder = null;
  this.encoding = null;
  if (options.encoding) {
    if (!StringDecoder)
      StringDecoder = require('string_decoder/').StringDecoder;
    this.decoder = new StringDecoder(options.encoding);
    this.encoding = options.encoding;
  }
}

function Readable(options) {
  if (!(this instanceof Readable))
    return new Readable(options);

  this._readableState = new ReadableState(options, this);

  // legacy
  this.readable = true;

  Stream.call(this);
}

// Manually shove something into the read() buffer.
// This returns true if the highWaterMark has not been hit yet,
// similar to how Writable.write() returns true if you should
// write() some more.
Readable.prototype.push = function(chunk, encoding) {
  var state = this._readableState;

  if (typeof chunk === 'string' && !state.objectMode) {
    encoding = encoding || state.defaultEncoding;
    if (encoding !== state.encoding) {
      chunk = new Buffer(chunk, encoding);
      encoding = '';
    }
  }

  return readableAddChunk(this, state, chunk, encoding, false);
};

// Unshift should *always* be something directly out of read()
Readable.prototype.unshift = function(chunk) {
  var state = this._readableState;
  return readableAddChunk(this, state, chunk, '', true);
};

function readableAddChunk(stream, state, chunk, encoding, addToFront) {
  var er = chunkInvalid(state, chunk);
  if (er) {
    stream.emit('error', er);
  } else if (chunk === null || chunk === undefined) {
    state.reading = false;
    if (!state.ended)
      onEofChunk(stream, state);
  } else if (state.objectMode || chunk && chunk.length > 0) {
    if (state.ended && !addToFront) {
      var e = new Error('stream.push() after EOF');
      stream.emit('error', e);
    } else if (state.endEmitted && addToFront) {
      var e = new Error('stream.unshift() after end event');
      stream.emit('error', e);
    } else {
      if (state.decoder && !addToFront && !encoding)
        chunk = state.decoder.write(chunk);

      // update the buffer info.
      state.length += state.objectMode ? 1 : chunk.length;
      if (addToFront) {
        state.buffer.unshift(chunk);
      } else {
        state.reading = false;
        state.buffer.push(chunk);
      }

      if (state.needReadable)
        emitReadable(stream);

      maybeReadMore(stream, state);
    }
  } else if (!addToFront) {
    state.reading = false;
  }

  return needMoreData(state);
}



// if it's past the high water mark, we can push in some more.
// Also, if we have no data yet, we can stand some
// more bytes.  This is to work around cases where hwm=0,
// such as the repl.  Also, if the push() triggered a
// readable event, and the user called read(largeNumber) such that
// needReadable was set, then we ought to push more, so that another
// 'readable' event will be triggered.
function needMoreData(state) {
  return !state.ended &&
         (state.needReadable ||
          state.length < state.highWaterMark ||
          state.length === 0);
}

// backwards compatibility.
Readable.prototype.setEncoding = function(enc) {
  if (!StringDecoder)
    StringDecoder = require('string_decoder/').StringDecoder;
  this._readableState.decoder = new StringDecoder(enc);
  this._readableState.encoding = enc;
};

// Don't raise the hwm > 128MB
var MAX_HWM = 0x800000;
function roundUpToNextPowerOf2(n) {
  if (n >= MAX_HWM) {
    n = MAX_HWM;
  } else {
    // Get the next highest power of 2
    n--;
    for (var p = 1; p < 32; p <<= 1) n |= n >> p;
    n++;
  }
  return n;
}

function howMuchToRead(n, state) {
  if (state.length === 0 && state.ended)
    return 0;

  if (state.objectMode)
    return n === 0 ? 0 : 1;

  if (n === null || isNaN(n)) {
    // only flow one buffer at a time
    if (state.flowing && state.buffer.length)
      return state.buffer[0].length;
    else
      return state.length;
  }

  if (n <= 0)
    return 0;

  // If we're asking for more than the target buffer level,
  // then raise the water mark.  Bump up to the next highest
  // power of 2, to prevent increasing it excessively in tiny
  // amounts.
  if (n > state.highWaterMark)
    state.highWaterMark = roundUpToNextPowerOf2(n);

  // don't have that much.  return null, unless we've ended.
  if (n > state.length) {
    if (!state.ended) {
      state.needReadable = true;
      return 0;
    } else
      return state.length;
  }

  return n;
}

// you can override either this method, or the async _read(n) below.
Readable.prototype.read = function(n) {
  var state = this._readableState;
  state.calledRead = true;
  var nOrig = n;
  var ret;

  if (typeof n !== 'number' || n > 0)
    state.emittedReadable = false;

  // if we're doing read(0) to trigger a readable event, but we
  // already have a bunch of data in the buffer, then just trigger
  // the 'readable' event and move on.
  if (n === 0 &&
      state.needReadable &&
      (state.length >= state.highWaterMark || state.ended)) {
    emitReadable(this);
    return null;
  }

  n = howMuchToRead(n, state);

  // if we've ended, and we're now clear, then finish it up.
  if (n === 0 && state.ended) {
    ret = null;

    // In cases where the decoder did not receive enough data
    // to produce a full chunk, then immediately received an
    // EOF, state.buffer will contain [<Buffer >, <Buffer 00 ...>].
    // howMuchToRead will see this and coerce the amount to
    // read to zero (because it's looking at the length of the
    // first <Buffer > in state.buffer), and we'll end up here.
    //
    // This can only happen via state.decoder -- no other venue
    // exists for pushing a zero-length chunk into state.buffer
    // and triggering this behavior. In this case, we return our
    // remaining data and end the stream, if appropriate.
    if (state.length > 0 && state.decoder) {
      ret = fromList(n, state);
      state.length -= ret.length;
    }

    if (state.length === 0)
      endReadable(this);

    return ret;
  }

  // All the actual chunk generation logic needs to be
  // *below* the call to _read.  The reason is that in certain
  // synthetic stream cases, such as passthrough streams, _read
  // may be a completely synchronous operation which may change
  // the state of the read buffer, providing enough data when
  // before there was *not* enough.
  //
  // So, the steps are:
  // 1. Figure out what the state of things will be after we do
  // a read from the buffer.
  //
  // 2. If that resulting state will trigger a _read, then call _read.
  // Note that this may be asynchronous, or synchronous.  Yes, it is
  // deeply ugly to write APIs this way, but that still doesn't mean
  // that the Readable class should behave improperly, as streams are
  // designed to be sync/async agnostic.
  // Take note if the _read call is sync or async (ie, if the read call
  // has returned yet), so that we know whether or not it's safe to emit
  // 'readable' etc.
  //
  // 3. Actually pull the requested chunks out of the buffer and return.

  // if we need a readable event, then we need to do some reading.
  var doRead = state.needReadable;

  // if we currently have less than the highWaterMark, then also read some
  if (state.length - n <= state.highWaterMark)
    doRead = true;

  // however, if we've ended, then there's no point, and if we're already
  // reading, then it's unnecessary.
  if (state.ended || state.reading)
    doRead = false;

  if (doRead) {
    state.reading = true;
    state.sync = true;
    // if the length is currently zero, then we *need* a readable event.
    if (state.length === 0)
      state.needReadable = true;
    // call internal read method
    this._read(state.highWaterMark);
    state.sync = false;
  }

  // If _read called its callback synchronously, then `reading`
  // will be false, and we need to re-evaluate how much data we
  // can return to the user.
  if (doRead && !state.reading)
    n = howMuchToRead(nOrig, state);

  if (n > 0)
    ret = fromList(n, state);
  else
    ret = null;

  if (ret === null) {
    state.needReadable = true;
    n = 0;
  }

  state.length -= n;

  // If we have nothing in the buffer, then we want to know
  // as soon as we *do* get something into the buffer.
  if (state.length === 0 && !state.ended)
    state.needReadable = true;

  // If we happened to read() exactly the remaining amount in the
  // buffer, and the EOF has been seen at this point, then make sure
  // that we emit 'end' on the very next tick.
  if (state.ended && !state.endEmitted && state.length === 0)
    endReadable(this);

  return ret;
};

function chunkInvalid(state, chunk) {
  var er = null;
  if (!Buffer.isBuffer(chunk) &&
      'string' !== typeof chunk &&
      chunk !== null &&
      chunk !== undefined &&
      !state.objectMode) {
    er = new TypeError('Invalid non-string/buffer chunk');
  }
  return er;
}


function onEofChunk(stream, state) {
  if (state.decoder && !state.ended) {
    var chunk = state.decoder.end();
    if (chunk && chunk.length) {
      state.buffer.push(chunk);
      state.length += state.objectMode ? 1 : chunk.length;
    }
  }
  state.ended = true;

  // if we've ended and we have some data left, then emit
  // 'readable' now to make sure it gets picked up.
  if (state.length > 0)
    emitReadable(stream);
  else
    endReadable(stream);
}

// Don't emit readable right away in sync mode, because this can trigger
// another read() call => stack overflow.  This way, it might trigger
// a nextTick recursion warning, but that's not so bad.
function emitReadable(stream) {
  var state = stream._readableState;
  state.needReadable = false;
  if (state.emittedReadable)
    return;

  state.emittedReadable = true;
  if (state.sync)
    process.nextTick(function() {
      emitReadable_(stream);
    });
  else
    emitReadable_(stream);
}

function emitReadable_(stream) {
  stream.emit('readable');
}


// at this point, the user has presumably seen the 'readable' event,
// and called read() to consume some data.  that may have triggered
// in turn another _read(n) call, in which case reading = true if
// it's in progress.
// However, if we're not ended, or reading, and the length < hwm,
// then go ahead and try to read some more preemptively.
function maybeReadMore(stream, state) {
  if (!state.readingMore) {
    state.readingMore = true;
    process.nextTick(function() {
      maybeReadMore_(stream, state);
    });
  }
}

function maybeReadMore_(stream, state) {
  var len = state.length;
  while (!state.reading && !state.flowing && !state.ended &&
         state.length < state.highWaterMark) {
    stream.read(0);
    if (len === state.length)
      // didn't get any data, stop spinning.
      break;
    else
      len = state.length;
  }
  state.readingMore = false;
}

// abstract method.  to be overridden in specific implementation classes.
// call cb(er, data) where data is <= n in length.
// for virtual (non-string, non-buffer) streams, "length" is somewhat
// arbitrary, and perhaps not very meaningful.
Readable.prototype._read = function(n) {
  this.emit('error', new Error('not implemented'));
};

Readable.prototype.pipe = function(dest, pipeOpts) {
  var src = this;
  var state = this._readableState;

  switch (state.pipesCount) {
    case 0:
      state.pipes = dest;
      break;
    case 1:
      state.pipes = [state.pipes, dest];
      break;
    default:
      state.pipes.push(dest);
      break;
  }
  state.pipesCount += 1;

  var doEnd = (!pipeOpts || pipeOpts.end !== false) &&
              dest !== process.stdout &&
              dest !== process.stderr;

  var endFn = doEnd ? onend : cleanup;
  if (state.endEmitted)
    process.nextTick(endFn);
  else
    src.once('end', endFn);

  dest.on('unpipe', onunpipe);
  function onunpipe(readable) {
    if (readable !== src) return;
    cleanup();
  }

  function onend() {
    dest.end();
  }

  // when the dest drains, it reduces the awaitDrain counter
  // on the source.  This would be more elegant with a .once()
  // handler in flow(), but adding and removing repeatedly is
  // too slow.
  var ondrain = pipeOnDrain(src);
  dest.on('drain', ondrain);

  function cleanup() {
    // cleanup event handlers once the pipe is broken
    dest.removeListener('close', onclose);
    dest.removeListener('finish', onfinish);
    dest.removeListener('drain', ondrain);
    dest.removeListener('error', onerror);
    dest.removeListener('unpipe', onunpipe);
    src.removeListener('end', onend);
    src.removeListener('end', cleanup);

    // if the reader is waiting for a drain event from this
    // specific writer, then it would cause it to never start
    // flowing again.
    // So, if this is awaiting a drain, then we just call it now.
    // If we don't know, then assume that we are waiting for one.
    if (!dest._writableState || dest._writableState.needDrain)
      ondrain();
  }

  // if the dest has an error, then stop piping into it.
  // however, don't suppress the throwing behavior for this.
  function onerror(er) {
    unpipe();
    dest.removeListener('error', onerror);
    if (EE.listenerCount(dest, 'error') === 0)
      dest.emit('error', er);
  }
  // This is a brutally ugly hack to make sure that our error handler
  // is attached before any userland ones.  NEVER DO THIS.
  if (!dest._events || !dest._events.error)
    dest.on('error', onerror);
  else if (isArray(dest._events.error))
    dest._events.error.unshift(onerror);
  else
    dest._events.error = [onerror, dest._events.error];



  // Both close and finish should trigger unpipe, but only once.
  function onclose() {
    dest.removeListener('finish', onfinish);
    unpipe();
  }
  dest.once('close', onclose);
  function onfinish() {
    dest.removeListener('close', onclose);
    unpipe();
  }
  dest.once('finish', onfinish);

  function unpipe() {
    src.unpipe(dest);
  }

  // tell the dest that it's being piped to
  dest.emit('pipe', src);

  // start the flow if it hasn't been started already.
  if (!state.flowing) {
    // the handler that waits for readable events after all
    // the data gets sucked out in flow.
    // This would be easier to follow with a .once() handler
    // in flow(), but that is too slow.
    this.on('readable', pipeOnReadable);

    state.flowing = true;
    process.nextTick(function() {
      flow(src);
    });
  }

  return dest;
};

function pipeOnDrain(src) {
  return function() {
    var dest = this;
    var state = src._readableState;
    state.awaitDrain--;
    if (state.awaitDrain === 0)
      flow(src);
  };
}

function flow(src) {
  var state = src._readableState;
  var chunk;
  state.awaitDrain = 0;

  function write(dest, i, list) {
    var written = dest.write(chunk);
    if (false === written) {
      state.awaitDrain++;
    }
  }

  while (state.pipesCount && null !== (chunk = src.read())) {

    if (state.pipesCount === 1)
      write(state.pipes, 0, null);
    else
      forEach(state.pipes, write);

    src.emit('data', chunk);

    // if anyone needs a drain, then we have to wait for that.
    if (state.awaitDrain > 0)
      return;
  }

  // if every destination was unpiped, either before entering this
  // function, or in the while loop, then stop flowing.
  //
  // NB: This is a pretty rare edge case.
  if (state.pipesCount === 0) {
    state.flowing = false;

    // if there were data event listeners added, then switch to old mode.
    if (EE.listenerCount(src, 'data') > 0)
      emitDataEvents(src);
    return;
  }

  // at this point, no one needed a drain, so we just ran out of data
  // on the next readable event, start it over again.
  state.ranOut = true;
}

function pipeOnReadable() {
  if (this._readableState.ranOut) {
    this._readableState.ranOut = false;
    flow(this);
  }
}


Readable.prototype.unpipe = function(dest) {
  var state = this._readableState;

  // if we're not piping anywhere, then do nothing.
  if (state.pipesCount === 0)
    return this;

  // just one destination.  most common case.
  if (state.pipesCount === 1) {
    // passed in one, but it's not the right one.
    if (dest && dest !== state.pipes)
      return this;

    if (!dest)
      dest = state.pipes;

    // got a match.
    state.pipes = null;
    state.pipesCount = 0;
    this.removeListener('readable', pipeOnReadable);
    state.flowing = false;
    if (dest)
      dest.emit('unpipe', this);
    return this;
  }

  // slow case. multiple pipe destinations.

  if (!dest) {
    // remove all.
    var dests = state.pipes;
    var len = state.pipesCount;
    state.pipes = null;
    state.pipesCount = 0;
    this.removeListener('readable', pipeOnReadable);
    state.flowing = false;

    for (var i = 0; i < len; i++)
      dests[i].emit('unpipe', this);
    return this;
  }

  // try to find the right one.
  var i = indexOf(state.pipes, dest);
  if (i === -1)
    return this;

  state.pipes.splice(i, 1);
  state.pipesCount -= 1;
  if (state.pipesCount === 1)
    state.pipes = state.pipes[0];

  dest.emit('unpipe', this);

  return this;
};

// set up data events if they are asked for
// Ensure readable listeners eventually get something
Readable.prototype.on = function(ev, fn) {
  var res = Stream.prototype.on.call(this, ev, fn);

  if (ev === 'data' && !this._readableState.flowing)
    emitDataEvents(this);

  if (ev === 'readable' && this.readable) {
    var state = this._readableState;
    if (!state.readableListening) {
      state.readableListening = true;
      state.emittedReadable = false;
      state.needReadable = true;
      if (!state.reading) {
        this.read(0);
      } else if (state.length) {
        emitReadable(this, state);
      }
    }
  }

  return res;
};
Readable.prototype.addListener = Readable.prototype.on;

// pause() and resume() are remnants of the legacy readable stream API
// If the user uses them, then switch into old mode.
Readable.prototype.resume = function() {
  emitDataEvents(this);
  this.read(0);
  this.emit('resume');
};

Readable.prototype.pause = function() {
  emitDataEvents(this, true);
  this.emit('pause');
};

function emitDataEvents(stream, startPaused) {
  var state = stream._readableState;

  if (state.flowing) {
    // https://github.com/isaacs/readable-stream/issues/16
    throw new Error('Cannot switch to old mode now.');
  }

  var paused = startPaused || false;
  var readable = false;

  // convert to an old-style stream.
  stream.readable = true;
  stream.pipe = Stream.prototype.pipe;
  stream.on = stream.addListener = Stream.prototype.on;

  stream.on('readable', function() {
    readable = true;

    var c;
    while (!paused && (null !== (c = stream.read())))
      stream.emit('data', c);

    if (c === null) {
      readable = false;
      stream._readableState.needReadable = true;
    }
  });

  stream.pause = function() {
    paused = true;
    this.emit('pause');
  };

  stream.resume = function() {
    paused = false;
    if (readable)
      process.nextTick(function() {
        stream.emit('readable');
      });
    else
      this.read(0);
    this.emit('resume');
  };

  // now make it start, just in case it hadn't already.
  stream.emit('readable');
}

// wrap an old-style stream as the async data source.
// This is *not* part of the readable stream interface.
// It is an ugly unfortunate mess of history.
Readable.prototype.wrap = function(stream) {
  var state = this._readableState;
  var paused = false;

  var self = this;
  stream.on('end', function() {
    if (state.decoder && !state.ended) {
      var chunk = state.decoder.end();
      if (chunk && chunk.length)
        self.push(chunk);
    }

    self.push(null);
  });

  stream.on('data', function(chunk) {
    if (state.decoder)
      chunk = state.decoder.write(chunk);

    // don't skip over falsy values in objectMode
    //if (state.objectMode && util.isNullOrUndefined(chunk))
    if (state.objectMode && (chunk === null || chunk === undefined))
      return;
    else if (!state.objectMode && (!chunk || !chunk.length))
      return;

    var ret = self.push(chunk);
    if (!ret) {
      paused = true;
      stream.pause();
    }
  });

  // proxy all the other methods.
  // important when wrapping filters and duplexes.
  for (var i in stream) {
    if (typeof stream[i] === 'function' &&
        typeof this[i] === 'undefined') {
      this[i] = function(method) { return function() {
        return stream[method].apply(stream, arguments);
      }}(i);
    }
  }

  // proxy certain important events.
  var events = ['error', 'close', 'destroy', 'pause', 'resume'];
  f