ng-file-upload/dist/FileAPI.js at master · JavaScript-Resource/ng-file-upload · GitHub

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/*! FileAPI 2.0.7 - BSD | git://github.com/mailru/FileAPI.git

* FileAPI — a set of javascript tools for working with files. Multiupload, drag'n'drop and chunked file upload. Images: crop, resize and auto orientation by EXIF.

* JavaScript Canvas to Blob 2.0.5

* https://github.com/blueimp/JavaScript-Canvas-to-Blob

* https://blueimp.net

* Licensed under the MIT license:

* http://www.opensource.org/licenses/MIT

* Based on stackoverflow user Stoive's code snippet:

* http://stackoverflow.com/q/4998908

/*jslint nomen: true, regexp: true */

/*global window, atob, Blob, ArrayBuffer, Uint8Array */

(function (window) {

'use strict';

var CanvasPrototype = window.HTMLCanvasElement &&

window.HTMLCanvasElement.prototype,

hasBlobConstructor = window.Blob && (function () {

try {

return Boolean(new Blob());

} catch (e) {

return false;

}

}()),

hasArrayBufferViewSupport = hasBlobConstructor && window.Uint8Array &&

(function () {

try {

return new Blob([new Uint8Array(100)]).size === 100;

} catch (e) {

return false;

}

}()),

BlobBuilder = window.BlobBuilder || window.WebKitBlobBuilder ||

window.MozBlobBuilder || window.MSBlobBuilder,

dataURLtoBlob = (hasBlobConstructor || BlobBuilder) && window.atob &&

window.ArrayBuffer && window.Uint8Array && function (dataURI) {

var byteString,

arrayBuffer,

intArray,

mimeString,

bb;

if (dataURI.split(',')[0].indexOf('base64') >= 0) {

// Convert base64 to raw binary data held in a string:

byteString = atob(dataURI.split(',')[1]);

} else {

// Convert base64/URLEncoded data component to raw binary data:

byteString = decodeURIComponent(dataURI.split(',')[1]);

}

// Write the bytes of the string to an ArrayBuffer:

arrayBuffer = new ArrayBuffer(byteString.length);

intArray = new Uint8Array(arrayBuffer);

for (i = 0; i < byteString.length; i += 1) {

intArray[i] = byteString.charCodeAt(i);

}

// Separate out the mime component:

mimeString = dataURI.split(',')[0].split(':')[1].split(';')[0];

// Write the ArrayBuffer (or ArrayBufferView) to a blob:

if (hasBlobConstructor) {

return new Blob(

[hasArrayBufferViewSupport ? intArray : arrayBuffer],

{type: mimeString}

);

}

bb = new BlobBuilder();

bb.append(arrayBuffer);

return bb.getBlob(mimeString);

};

if (window.HTMLCanvasElement && !CanvasPrototype.toBlob) {

if (CanvasPrototype.mozGetAsFile) {

CanvasPrototype.toBlob = function (callback, type, quality) {

if (quality && CanvasPrototype.toDataURL && dataURLtoBlob) {

callback(dataURLtoBlob(this.toDataURL(type, quality)));

} else {

callback(this.mozGetAsFile('blob', type));

}

};

} else if (CanvasPrototype.toDataURL && dataURLtoBlob) {

CanvasPrototype.toBlob = function (callback, type, quality) {

callback(dataURLtoBlob(this.toDataURL(type, quality)));

};

}

window.dataURLtoBlob = dataURLtoBlob;

})(window);

/*jslint evil: true */

/*global window, URL, webkitURL, ActiveXObject */

(function (window, undef){

'use strict';

var

gid = 1,

noop = function (){},

document = window.document,

doctype = document.doctype || {},

userAgent = window.navigator.userAgent,

// https://github.com/blueimp/JavaScript-Load-Image/blob/master/load-image.js#L48

apiURL = (window.createObjectURL && window) || (window.URL && URL.revokeObjectURL && URL) || (window.webkitURL && webkitURL),

Blob = window.Blob,

File = window.File,

FileReader = window.FileReader,

FormData = window.FormData,

XMLHttpRequest = window.XMLHttpRequest,

jQuery = window.jQuery,

html5 = !!(File && (FileReader && (window.Uint8Array || FormData || XMLHttpRequest.prototype.sendAsBinary)))

&& !(/safari\//i.test(userAgent) && !/chrome\//i.test(userAgent) && /windows/i.test(userAgent)), // BugFix: https://github.com/mailru/FileAPI/issues/25

cors = html5 && ('withCredentials' in (new XMLHttpRequest)),

chunked = html5 && !!Blob && !!(Blob.prototype.webkitSlice || Blob.prototype.mozSlice || Blob.prototype.slice),

// https://github.com/blueimp/JavaScript-Canvas-to-Blob

dataURLtoBlob = window.dataURLtoBlob,

_rimg = /img/i,

_rcanvas = /canvas/i,

_rimgcanvas = /img|canvas/i,

_rinput = /input/i,

_rdata = /^data:[^,]+,/,

_toString = {}.toString,

Math = window.Math,

_SIZE_CONST = function (pow){

pow = new window.Number(Math.pow(1024, pow));

pow.from = function (sz){ return Math.round(sz * this); };

return pow;

_elEvents = {}, // element event listeners

_infoReader = [], // list of file info processors

_readerEvents = 'abort progress error load loadend',

_xhrPropsExport = 'status statusText readyState response responseXML responseText responseBody'.split(' '),

currentTarget = 'currentTarget', // for minimize

preventDefault = 'preventDefault', // and this too

_isArray = function (ar) {

return ar && ('length' in ar);

/**

* Iterate over a object or array

_each = function (obj, fn, ctx){

if( obj ){

if( _isArray(obj) ){

for( var i = 0, n = obj.length; i < n; i++ ){

if( i in obj ){

fn.call(ctx, obj[i], i, obj);

}

else {

for( var key in obj ){

if( obj.hasOwnProperty(key) ){

fn.call(ctx, obj[key], key, obj);

}

/**

* Merge the contents of two or more objects together into the first object

_extend = function (dst){

var args = arguments, i = 1, _ext = function (val, key){ dst[key] = val; };

for( ; i < args.length; i++ ){

_each(args[i], _ext);

}

return dst;

/**

* Add event listener

_on = function (el, type, fn){

if( el ){

var uid = api.uid(el);

if( !_elEvents[uid] ){

_elEvents[uid] = {};

}

var isFileReader = (FileReader && el) && (el instanceof FileReader);

_each(type.split(/\s+/), function (type){

if( jQuery && !isFileReader){

jQuery.event.add(el, type, fn);

} else {

if( !_elEvents[uid][type] ){

_elEvents[uid][type] = [];

}

_elEvents[uid][type].push(fn);

if( el.addEventListener ){ el.addEventListener(type, fn, false); }

else if( el.attachEvent ){ el.attachEvent('on'+type, fn); }

else { el['on'+type] = fn; }

}

});

}

/**

* Remove event listener

_off = function (el, type, fn){

if( el ){

var uid = api.uid(el), events = _elEvents[uid] || {};

var isFileReader = (FileReader && el) && (el instanceof FileReader);

_each(type.split(/\s+/), function (type){

if( jQuery && !isFileReader){

jQuery.event.remove(el, type, fn);

}

else {

var fns = events[type] || [], i = fns.length;

while( i-- ){

if( fns[i] === fn ){

fns.splice(i, 1);

break;

}

if( el.addEventListener ){ el.removeEventListener(type, fn, false); }

else if( el.detachEvent ){ el.detachEvent('on'+type, fn); }

else { el['on'+type] = null; }

}

});

}

_one = function(el, type, fn){

_on(el, type, function _(evt){

_off(el, type, _);

fn(evt);

});

_fixEvent = function (evt){

if( !evt.target ){ evt.target = window.event && window.event.srcElement || document; }

if( evt.target.nodeType === 3 ){ evt.target = evt.target.parentNode; }

return evt;

_supportInputAttr = function (attr){

var input = document.createElement('input');

input.setAttribute('type', "file");

return attr in input;

/**

* FileAPI (core object)

api = {

version: '2.0.7',

cors: false,

html5: true,

media: false,

formData: true,

multiPassResize: true,

debug: false,

pingUrl: false,

multiFlash: false,

flashAbortTimeout: 0,

withCredentials: true,

staticPath: './dist/',

flashUrl: 0, // @default: './FileAPI.flash.swf'

flashImageUrl: 0, // @default: './FileAPI.flash.image.swf'

postNameConcat: function (name, idx){

return name + (idx != null ? '['+ idx +']' : '');

ext2mime: {

jpg: 'image/jpeg'

, tif: 'image/tiff'

, txt: 'text/plain'

// Fallback for flash

accept: {

'image/*': 'art bm bmp dwg dxf cbr cbz fif fpx gif ico iefs jfif jpe jpeg jpg jps jut mcf nap nif pbm pcx pgm pict pm png pnm qif qtif ras rast rf rp svf tga tif tiff xbm xbm xpm xwd'

, 'audio/*': 'm4a flac aac rm mpa wav wma ogg mp3 mp2 m3u mod amf dmf dsm far gdm imf it m15 med okt s3m stm sfx ult uni xm sid ac3 dts cue aif aiff wpl ape mac mpc mpp shn wv nsf spc gym adplug adx dsp adp ymf ast afc hps xs'

, 'video/*': 'm4v 3gp nsv ts ty strm rm rmvb m3u ifo mov qt divx xvid bivx vob nrg img iso pva wmv asf asx ogm m2v avi bin dat dvr-ms mpg mpeg mp4 mkv avc vp3 svq3 nuv viv dv fli flv wpl'

uploadRetry : 0,

networkDownRetryTimeout : 5000, // milliseconds, don't flood when network is down

chunkSize : 0,

chunkUploadRetry : 0,

chunkNetworkDownRetryTimeout : 2000, // milliseconds, don't flood when network is down

KB: _SIZE_CONST(1),

MB: _SIZE_CONST(2),

GB: _SIZE_CONST(3),

TB: _SIZE_CONST(4),

EMPTY_PNG: 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAC0lEQVQIW2NkAAIAAAoAAggA9GkAAAAASUVORK5CYII=',

expando: 'fileapi' + (new Date).getTime(),

uid: function (obj){

return obj

? (obj[api.expando] = obj[api.expando] || api.uid())

: (++gid, api.expando + gid)

;

log: function (){

// ngf fix for IE8 #1071

if( api.debug && api._supportConsoleLog ){

if( api._supportConsoleLogApply ){

console.log.apply(console, arguments);

}

else {

console.log([].join.call(arguments, ' '));

}

/**

* Create new image

* @param {String} [src]

* @param {Function} [fn] 1. error -- boolean, 2. img -- Image element

* @returns {HTMLElement}

newImage: function (src, fn){

var img = document.createElement('img');

if( fn ){

api.event.one(img, 'error load', function (evt){

fn(evt.type == 'error', img);

img = null;

});

}

img.src = src;

return img;

/**

* Get XHR

* @returns {XMLHttpRequest}

getXHR: function (){

var xhr;

if( XMLHttpRequest ){

xhr = new XMLHttpRequest;

}

else if( window.ActiveXObject ){

try {

xhr = new ActiveXObject('MSXML2.XMLHttp.3.0');

} catch (e) {

xhr = new ActiveXObject('Microsoft.XMLHTTP');

}

return xhr;

isArray: _isArray,

support: {

dnd: cors && ('ondrop' in document.createElement('div')),

cors: cors,

html5: html5,

chunked: chunked,

dataURI: true,

accept: _supportInputAttr('accept'),

multiple: _supportInputAttr('multiple')

event: {

on: _on

, off: _off

, one: _one

, fix: _fixEvent

throttle: function(fn, delay) {

var id, args;

return function _throttle(){

args = arguments;

if( !id ){

fn.apply(window, args);

id = setTimeout(function (){

id = 0;

fn.apply(window, args);

}, delay);

}

};

F: function (){},

parseJSON: function (str){

var json;

if( window.JSON && JSON.parse ){

json = JSON.parse(str);

}

else {

json = (new Function('return ('+str.replace(/([\r\n])/g, '\\$1')+');'))();

}

return json;

trim: function (str){

str = String(str);

return str.trim ? str.trim() : str.replace(/^\s+|\s+$/g, '');

/**

* Simple Defer

* @return {Object}

defer: function (){

var

list = []

, result

, error

, defer = {

resolve: function (err, res){

defer.resolve = noop;

error = err || false;

result = res;

while( res = list.shift() ){

res(error, result);

}

then: function (fn){

if( error !== undef ){

fn(error, result);

} else {

list.push(fn);

}

};

return defer;

queue: function (fn){

var

_idx = 0

, _length = 0

, _fail = false

, _end = false

, queue = {

inc: function (){

_length++;

next: function (){

_idx++;

setTimeout(queue.check, 0);

check: function (){

(_idx >= _length) && !_fail && queue.end();

isFail: function (){

return _fail;

fail: function (){

!_fail && fn(_fail = true);

end: function (){

if( !_end ){

_end = true;

fn();

}

;

return queue;

/**

* For each object

* @param {Object|Array} obj

* @param {Function} fn

* @param {*} [ctx]

each: _each,

/**

* Async for

* @param {Array} array

* @param {Function} callback

afor: function (array, callback){

var i = 0, n = array.length;

if( _isArray(array) && n-- ){

(function _next(){

callback(n != i && _next, array[i], i++);

})();

}

else {

callback(false);

}

/**

* Merge the contents of two or more objects together into the first object

* @param {Object} dst

* @return {Object}

extend: _extend,

/**

* Is file?

* @param {File} file

* @return {Boolean}

isFile: function (file){

return _toString.call(file) === '[object File]';

/**

* Is blob?

* @param {Blob} blob

* @returns {Boolean}

isBlob: function (blob) {

return this.isFile(blob) || (_toString.call(blob) === '[object Blob]');

/**

* Is canvas element

* @param {HTMLElement} el

* @return {Boolean}

isCanvas: function (el){

return el && _rcanvas.test(el.nodeName);

getFilesFilter: function (filter){

filter = typeof filter == 'string' ? filter : (filter.getAttribute && filter.getAttribute('accept') || '');

return filter ? new RegExp('('+ filter.replace(/\./g, '\\.').replace(/,/g, '|') +')$', 'i') : /./;

/**

* Read as DataURL

* @param {File|Element} file

* @param {Function} fn

readAsDataURL: function (file, fn){

if( api.isCanvas(file) ){

_emit(file, fn, 'load', api.toDataURL(file));

}

else {

_readAs(file, fn, 'DataURL');

}

/**

* Read as Binary string

* @param {File} file

* @param {Function} fn

readAsBinaryString: function (file, fn){

if( _hasSupportReadAs('BinaryString') ){

_readAs(file, fn, 'BinaryString');

} else {

// Hello IE10!

_readAs(file, function (evt){

if( evt.type == 'load' ){

try {

// dataURL -> binaryString

evt.result = api.toBinaryString(evt.result);

} catch (e){

evt.type = 'error';

evt.message = e.toString();

}

fn(evt);

}, 'DataURL');

}

/**

* Read as ArrayBuffer

* @param {File} file

* @param {Function} fn

readAsArrayBuffer: function(file, fn){

_readAs(file, fn, 'ArrayBuffer');

/**

* Read as text

* @param {File} file

* @param {String} encoding

* @param {Function} [fn]

readAsText: function(file, encoding, fn){

if( !fn ){

fn = encoding;

encoding = 'utf-8';

}

_readAs(file, fn, 'Text', encoding);

/**

* Convert image or canvas to DataURL

* @param {Element} el Image or Canvas element

* @param {String} [type] mime-type

* @return {String}

toDataURL: function (el, type){

if( typeof el == 'string' ){

return el;

}

else if( el.toDataURL ){

return el.toDataURL(type || 'image/png');

}

/**

* Canvert string, image or canvas to binary string

* @param {String|Element} val

* @return {String}

toBinaryString: function (val){

return window.atob(api.toDataURL(val).replace(_rdata, ''));

/**

* Read file or DataURL as ImageElement

* @param {File|String} file

* @param {Function} fn

* @param {Boolean} [progress]

readAsImage: function (file, fn, progress){

if( api.isFile(file) ){

if( apiURL ){

/** @namespace apiURL.createObjectURL */

var data = apiURL.createObjectURL(file);

if( data === undef ){

_emit(file, fn, 'error');

}

else {

api.readAsImage(data, fn, progress);

}

else {

api.readAsDataURL(file, function (evt){

if( evt.type == 'load' ){

api.readAsImage(evt.result, fn, progress);

}

else if( progress || evt.type == 'error' ){

_emit(file, fn, evt, null, { loaded: evt.loaded, total: evt.total });

}

});

}

else if( api.isCanvas(file) ){

_emit(file, fn, 'load', file);

}

else if( _rimg.test(file.nodeName) ){

if( file.complete ){

_emit(file, fn, 'load', file);

}

else {

var events = 'error abort load';

_one(file, events, function _fn(evt){

if( evt.type == 'load' && apiURL ){

/** @namespace apiURL.revokeObjectURL */

apiURL.revokeObjectURL(file.src);

}

_off(file, events, _fn);

_emit(file, fn, evt, file);

});

}

else if( file.iframe ){

_emit(file, fn, { type: 'error' });

}

else {

// Created image

var img = api.newImage(file.dataURL || file);

api.readAsImage(img, fn, progress);

}

/**

* Make file by name

* @param {String} name

* @return {Array}

checkFileObj: function (name){

var file = {}, accept = api.accept;

if( typeof name == 'object' ){

file = name;

}

else {

file.name = (name + '').split(/\\|\//g).pop();

}

if( file.type == null ){

file.type = file.name.split('.').pop();

}

_each(accept, function (ext, type){

ext = new RegExp(ext.replace(/\s/g, '|'), 'i');

if( ext.test(file.type) || api.ext2mime[file.type] ){

file.type = api.ext2mime[file.type] || (type.split('/')[0] +'/'+ file.type);

}

});

return file;

/**

* Get drop files

* @param {Event} evt

* @param {Function} callback

getDropFiles: function (evt, callback){

var

files = []

, dataTransfer = _getDataTransfer(evt)

, entrySupport = _isArray(dataTransfer.items) && dataTransfer.items[0] && _getAsEntry(dataTransfer.items[0])

, queue = api.queue(function (){ callback(files); })

;

_each((entrySupport ? dataTransfer.items : dataTransfer.files) || [], function (item){

queue.inc();

try {

if( entrySupport ){

_readEntryAsFiles(item, function (err, entryFiles){

if( err ){

api.log('[err] getDropFiles:', err);

} else {

files.push.apply(files, entryFiles);

}

queue.next();

});

}

else {

_isRegularFile(item, function (yes){

yes && files.push(item);

queue.next();

});

}

catch( err ){

queue.next();

api.log('[err] getDropFiles: ', err);

}

});

queue.check();

/**

* Get file list

* @param {HTMLInputElement|Event} input

* @param {String|Function} [filter]

* @param {Function} [callback]

* @return {Array|Null}

getFiles: function (input, filter, callback){

var files = [];

if( callback ){

api.filterFiles(api.getFiles(input), filter, callback);

return null;

}

if( input.jquery ){

// jQuery object

input.each(function (){

files = files.concat(api.getFiles(this));

});

input = files;

files = [];

}

if( typeof filter == 'string' ){

filter = api.getFilesFilter(filter);

}

if( input.originalEvent ){

// jQuery event

input = _fixEvent(input.originalEvent);

}

else if( input.srcElement ){

// IE Event

input = _fixEvent(input);

}

if( input.dataTransfer ){

// Drag'n'Drop

input = input.dataTransfer;

}

else if( input.target ){

// Event

input = input.target;

}

if( input.files ){

// Input[type="file"]

files = input.files;

if( !html5 ){

// Partial support for file api

files[0].blob = input;

files[0].iframe = true;

}

else if( !html5 && isInputFile(input) ){

if( api.trim(input.value) ){

files = [api.checkFileObj(input.value)];

files[0].blob = input;

files[0].iframe = true;

}

else if( _isArray(input) ){

files = input;

}

return api.filter(files, function (file){ return !filter || filter.test(file.name); });

/**

* Get total file size

* @param {Array} files

* @return {Number}

getTotalSize: function (files){

var size = 0, i = files && files.length;

while( i-- ){

size += files[i].size;

}

return size;

/**

* Get image information

* @param {File} file

* @param {Function} fn

getInfo: function (file, fn){

var info = {}, readers = _infoReader.concat();

if( api.isFile(file) ){

(function _next(){

var reader = readers.shift();

if( reader ){

if( reader.test(file.type) ){

reader(file, function (err, res){

if( err ){

fn(err);

}

else {

_extend(info, res);

_next();

}

});

}

else {

_next();

}

else {

fn(false, info);

}

})();

}

else {

fn('not_support_info', info);

}

/**

* Add information reader

* @param {RegExp} mime

* @param {Function} fn

addInfoReader: function (mime, fn){

fn.test = function (type){ return mime.test(type); };

_infoReader.push(fn);

/**

* Filter of array

* @param {Array} input

* @param {Function} fn

* @return {Array}

filter: function (input, fn){

var result = [], i = 0, n = input.length, val;

for( ; i < n; i++ ){

if( i in input ){

val = input[i];

if( fn.call(val, val, i, input) ){

result.push(val);

}

return result;

/**

* Filter files

* @param {Array} files

* @param {Function} eachFn

* @param {Function} resultFn

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ng-file-upload/dist/FileAPI.js at master · JavaScript-Resource/ng-file-upload · GitHub

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