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blob-util - npm Package Compare versions

Comparing version 1.1.1 to 1.1.2

.idea/jsLibraryMappings.xml
.idea/libraries/blob_util_node_modules.xml
bin/es3ify.js
doc/global.html
doc/index.html

9

bin/dev-server.js

@@ -8,3 +8,2 @@ #!/usr/bin/env node

var Promise = require('bluebird');
var request = require('request');
var http_server = require("http-server");

@@ -16,3 +15,9 @@ var fs = require('fs');

var watchify = require("watchify");
var w = watchify(indexfile);
var browserify = require('browserify');
var w = watchify(browserify(indexfile, {
cache: {},
packageCache: {},
fullPaths: true,
debug: true
}));

@@ -19,0 +24,0 @@ w.on('update', bundle);

39

bin/test-browser.js

@@ -9,2 +9,3 @@ #!/usr/bin/env node

var sauceConnectLauncher = require('sauce-connect-launcher');
var selenium = require('selenium-standalone');
var querystring = require("querystring");

@@ -15,5 +16,2 @@ var request = require('request').defaults({json: true});

var SELENIUM_PATH = '../vendor/selenium-server-standalone-2.38.0.jar';
var SELENIUM_HUB = 'http://localhost:4444/wd/hub/status';
var testTimeout = 30 * 60 * 1000;

@@ -47,8 +45,2 @@

}
if (process.env.ADAPTERS) {
qs.adapters = process.env.ADAPTERS;
}
if (process.env.ES5_SHIM || process.env.ES5_SHIMS) {
qs.es5shim = true;
}
testUrl += '?';

@@ -92,27 +84,14 @@ testUrl += querystring.stringify(qs);

function startSelenium(callback) {
// Start selenium
spawn('java', ['-jar', path.resolve(__dirname, SELENIUM_PATH)], {});
var retries = 0;
var started = function () {
if (++retries > 30) {
console.error('Unable to connect to selenium');
var opts = {version: '2.45.0'};
selenium.install(opts, function(err) {
if (err) {
console.error('Failed to install selenium');
process.exit(1);
return;
}
request(SELENIUM_HUB, function (err, resp) {
if (resp && resp.statusCode === 200) {
sauceClient = wd.promiseChainRemote();
callback();
} else {
setTimeout(started, 1000);
}
selenium.start(opts, function(err, server) {
sauceClient = wd.promiseChainRemote();
callback();
});
};
started();
});
}

@@ -119,0 +98,0 @@

2

bower.json
{
"name": "blob-util",
"version": "1.1.1",
"version": "1.1.2",
"description": "Utilities for working with Blob objects in the browser",

@@ -5,0 +5,0 @@ "homepage": "https://github.com/nolanlawson/blob-util",

808

dist/blob-util.js

@@ -1,312 +0,3 @@

!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var f;"undefined"!=typeof window?f=window:"undefined"!=typeof global?f=global:"undefined"!=typeof self&&(f=self),f.blobUtil=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 utils = require('./utils');
/* jshint -W079 */
var Blob = require('blob');
var Promise = utils.Promise;
//
// PRIVATE
//
// From http://stackoverflow.com/questions/14967647/ (continues on next line)
// encode-decode-image-with-base64-breaks-image (2013-04-21)
function binaryStringToArrayBuffer(binary) {
var length = binary.length;
var buf = new ArrayBuffer(length);
var arr = new Uint8Array(buf);
var i = -1;
while (++i < length) {
arr[i] = binary.charCodeAt(i);
}
return buf;
}
// Can't find original post, but this is close
// http://stackoverflow.com/questions/6965107/ (continues on next line)
// converting-between-strings-and-arraybuffers
function arrayBufferToBinaryString(buffer) {
var binary = '';
var bytes = new Uint8Array(buffer);
var length = bytes.byteLength;
var i = -1;
while (++i < length) {
binary += String.fromCharCode(bytes[i]);
}
return binary;
}
// doesn't download the image more than once, because
// browsers aren't dumb. uses the cache
function loadImage(src, crossOrigin) {
return new Promise(function (resolve, reject) {
var img = new Image();
if (crossOrigin) {
img.crossOrigin = crossOrigin;
}
img.onload = function () {
resolve(img);
};
img.onerror = reject;
img.src = src;
});
}
function imgToCanvas(img) {
var canvas = document.createElement('canvas');
canvas.width = img.width;
canvas.height = img.height;
// copy the image contents to the canvas
var context = canvas.getContext('2d');
context.drawImage(
img,
0, 0,
img.width, img.height,
0, 0,
img.width, img.height);
return canvas;
}
//
// PUBLIC
//
/**
* Shim for
* [new Blob()]{@link https://developer.mozilla.org/en-US/docs/Web/API/Blob.Blob}
* to support
* [older browsers that use the deprecated <code>BlobBuilder</code> API]{@link http://caniuse.com/blob}.
*
* @param {Array} parts - content of the <code>Blob</code>
* @param {Object} options - usually just <code>{type: myContentType}</code>
* @returns {Blob}
*/
function createBlob(parts, options) {
options = options || {};
if (typeof options === 'string') {
options = {type: options}; // do you a solid here
}
return new Blob(parts, options);
}
/**
* Shim for
* [URL.createObjectURL()]{@link https://developer.mozilla.org/en-US/docs/Web/API/URL.createObjectURL}
* to support browsers that only have the prefixed
* <code>webkitURL</code> (e.g. Android <4.4).
* @param {Blob} blob
* @returns {string} url
*/
function createObjectURL(blob) {
return (window.URL || window.webkitURL).createObjectURL(blob);
}
/**
* Shim for
* [URL.revokeObjectURL()]{@link https://developer.mozilla.org/en-US/docs/Web/API/URL.revokeObjectURL}
* to support browsers that only have the prefixed
* <code>webkitURL</code> (e.g. Android <4.4).
* @param {string} url
*/
function revokeObjectURL(url) {
return (window.URL || window.webkitURL).revokeObjectURL(url);
}
/**
* Convert a <code>Blob</code> to a binary string. Returns a Promise.
*
* @param {Blob} blob
* @returns {Promise} Promise that resolves with the binary string
*/
function blobToBinaryString(blob) {
return new Promise(function (resolve, reject) {
var reader = new FileReader();
var hasBinaryString = typeof reader.readAsBinaryString === 'function';
reader.onloadend = function (e) {
var result = e.target.result || '';
if (hasBinaryString) {
return resolve(result);
}
resolve(arrayBufferToBinaryString(result));
};
reader.onerror = reject;
if (hasBinaryString) {
reader.readAsBinaryString(blob);
} else {
reader.readAsArrayBuffer(blob);
}
});
}
/**
* Convert a base64-encoded string to a <code>Blob</code>. Returns a Promise.
* @param {string} base64
* @param {string|undefined} type - the content type (optional)
* @returns {Promise} Promise that resolves with the <code>Blob</code>
*/
function base64StringToBlob(base64, type) {
return Promise.resolve().then(function () {
var parts = [binaryStringToArrayBuffer(atob(base64))];
return type ? createBlob(parts, {type: type}) : createBlob(parts);
});
}
/**
* Convert a binary string to a <code>Blob</code>. Returns a Promise.
* @param {string} binary
* @param {string|undefined} type - the content type (optional)
* @returns {Promise} Promise that resolves with the <code>Blob</code>
*/
function binaryStringToBlob(binary, type) {
return Promise.resolve().then(function () {
return base64StringToBlob(btoa(binary), type);
});
}
/**
* Convert a <code>Blob</code> to a binary string. Returns a Promise.
* @param {Blob} blob
* @returns {Promise} Promise that resolves with the binary string
*/
function blobToBase64String(blob) {
return blobToBinaryString(blob).then(function (binary) {
return btoa(binary);
});
}
/**
* Convert a data URL string
* (e.g. <code>'data:image/png;base64,iVBORw0KG...'</code>)
* to a <code>Blob</code>. Returns a Promise.
* @param {string} dataURL
* @returns {Promise} Promise that resolves with the <code>Blob</code>
*/
function dataURLToBlob(dataURL) {
return Promise.resolve().then(function () {
var type = dataURL.match(/data:([^;]+)/)[1];
var base64 = dataURL.replace(/^[^,]+,/, '');
var buff = binaryStringToArrayBuffer(atob(base64));
return createBlob([buff], {type: type});
});
}
/**
* Convert an image's <code>src</code> URL to a data URL by loading the image and painting
* it to a <code>canvas</code>. Returns a Promise.
*
* <p/>Note: this will coerce the image to the desired content type, and it
* will only paint the first frame of an animated GIF.
*
* @param {string} src
* @param {string|undefined} type - the content type (optional, defaults to 'image/png')
* @param {string|undefined} crossOrigin - for CORS-enabled images, set this to
* 'Anonymous' to avoid "tainted canvas" errors
* @returns {Promise} Promise that resolves with the data URL string
*/
function imgSrcToDataURL(src, type, crossOrigin) {
type = type || 'image/png';
return loadImage(src, crossOrigin).then(function (img) {
return imgToCanvas(img);
}).then(function (canvas) {
return canvas.toDataURL(type);
});
}
/**
* Convert a <code>canvas</code> to a <code>Blob</code>. Returns a Promise.
* @param {string} canvas
* @param {string|undefined} type - the content type (optional, defaults to 'image/png')
* @returns {Promise} Promise that resolves with the <code>Blob</code>
*/
function canvasToBlob(canvas, type) {
return Promise.resolve().then(function () {
if (typeof canvas.toBlob === 'function') {
return new Promise(function (resolve) {
canvas.toBlob(resolve, type);
});
}
return dataURLToBlob(canvas.toDataURL(type));
});
}
/**
* Convert an image's <code>src</code> URL to a <code>Blob</code> by loading the image and painting
* it to a <code>canvas</code>. Returns a Promise.
*
* <p/>Note: this will coerce the image to the desired content type, and it
* will only paint the first frame of an animated GIF.
*
* @param {string} src
* @param {string|undefined} type - the content type (optional, defaults to 'image/png')
* @param {string|undefined} crossOrigin - for CORS-enabled images, set this to
* 'Anonymous' to avoid "tainted canvas" errors
* @returns {Promise} Promise that resolves with the <code>Blob</code>
*/
function imgSrcToBlob(src, type, crossOrigin) {
type = type || 'image/png';
return loadImage(src, crossOrigin).then(function (img) {
return imgToCanvas(img);
}).then(function (canvas) {
return canvasToBlob(canvas, type);
});
}
/**
* Convert an <code>ArrayBuffer</code> to a <code>Blob</code>. Returns a Promise.
*
* @param {ArrayBuffer} buffer
* @param {string|undefined} type - the content type (optional)
* @returns {Promise} Promise that resolves with the <code>Blob</code>
*/
function arrayBufferToBlob(buffer, type) {
return Promise.resolve().then(function () {
return createBlob([buffer], type);
});
}
/**
* Convert a <code>Blob</code> to an <code>ArrayBuffer</code>. Returns a Promise.
* @param {Blob} blob
* @returns {Promise} Promise that resolves with the <code>ArrayBuffer</code>
*/
function blobToArrayBuffer(blob) {
return blobToBinaryString(blob).then(function (binary) {
return binaryStringToArrayBuffer(binary);
});
}
module.exports = {
createBlob : createBlob,
createObjectURL : createObjectURL,
revokeObjectURL : revokeObjectURL,
imgSrcToBlob : imgSrcToBlob,
imgSrcToDataURL : imgSrcToDataURL,
canvasToBlob : canvasToBlob,
dataURLToBlob : dataURLToBlob,
blobToBase64String : blobToBase64String,
base64StringToBlob : base64StringToBlob,
binaryStringToBlob : binaryStringToBlob,
blobToBinaryString : blobToBinaryString,
arrayBufferToBlob : arrayBufferToBlob,
blobToArrayBuffer : blobToArrayBuffer
};
},{"./utils":2,"blob":3}],2:[function(require,module,exports){
(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.blobUtil = f()}})(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(_dereq_,module,exports){
(function (global){
'use strict';
var Promise = typeof global.Promise === 'function' ? global.Promise : require('lie');
exports.Promise = Promise;
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"lie":7}],3:[function(require,module,exports){
(function (global){
/**

@@ -410,3 +101,13 @@ * Create a blob builder even when vendor prefixes exist

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],4:[function(require,module,exports){
},{}],2:[function(_dereq_,module,exports){
},{}],3:[function(_dereq_,module,exports){
(function (global){
if (typeof global.Promise === 'function') {
module.exports = global.Promise;
} else {
module.exports = _dereq_(7);
}
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"7":7}],4:[function(_dereq_,module,exports){
'use strict';

@@ -417,13 +118,13 @@

function INTERNAL() {}
},{}],5:[function(require,module,exports){
},{}],5:[function(_dereq_,module,exports){
'use strict';
var Promise = require('./promise');
var reject = require('./reject');
var resolve = require('./resolve');
var INTERNAL = require('./INTERNAL');
var handlers = require('./handlers');
module.exports = all;
function all(iterable) {
var Promise = _dereq_(8);
var reject = _dereq_(10);
var resolve = _dereq_(11);
var INTERNAL = _dereq_(4);
var handlers = _dereq_(6);
var noArray = reject(new TypeError('must be an array'));
module.exports = function all(iterable) {
if (Object.prototype.toString.call(iterable) !== '[object Array]') {
return reject(new TypeError('must be an array'));
return noArray;
}

@@ -461,8 +162,8 @@

}
}
},{"./INTERNAL":4,"./handlers":6,"./promise":8,"./reject":11,"./resolve":12}],6:[function(require,module,exports){
};
},{"10":10,"11":11,"4":4,"6":6,"8":8}],6:[function(_dereq_,module,exports){
'use strict';
var tryCatch = require('./tryCatch');
var resolveThenable = require('./resolveThenable');
var states = require('./states');
var tryCatch = _dereq_(14);
var resolveThenable = _dereq_(12);
var states = _dereq_(13);

@@ -509,17 +210,16 @@ exports.resolve = function (self, value) {

}
},{"./resolveThenable":13,"./states":14,"./tryCatch":15}],7:[function(require,module,exports){
module.exports = exports = require('./promise');
},{"12":12,"13":13,"14":14}],7:[function(_dereq_,module,exports){
module.exports = exports = _dereq_(8);
exports.resolve = require('./resolve');
exports.reject = require('./reject');
exports.all = require('./all');
exports.race = require('./race');
},{"./all":5,"./promise":8,"./race":10,"./reject":11,"./resolve":12}],8:[function(require,module,exports){
exports.resolve = _dereq_(11);
exports.reject = _dereq_(10);
exports.all = _dereq_(5);
},{"10":10,"11":11,"5":5,"8":8}],8:[function(_dereq_,module,exports){
'use strict';
var unwrap = require('./unwrap');
var INTERNAL = require('./INTERNAL');
var resolveThenable = require('./resolveThenable');
var states = require('./states');
var QueueItem = require('./queueItem');
var unwrap = _dereq_(15);
var INTERNAL = _dereq_(4);
var resolveThenable = _dereq_(12);
var states = _dereq_(13);
var QueueItem = _dereq_(9);

@@ -563,6 +263,6 @@ module.exports = Promise;

},{"./INTERNAL":4,"./queueItem":9,"./resolveThenable":13,"./states":14,"./unwrap":16}],9:[function(require,module,exports){
},{"12":12,"13":13,"15":15,"4":4,"9":9}],9:[function(_dereq_,module,exports){
'use strict';
var handlers = require('./handlers');
var unwrap = require('./unwrap');
var handlers = _dereq_(6);
var unwrap = _dereq_(15);

@@ -593,49 +293,8 @@ module.exports = QueueItem;

};
},{"./handlers":6,"./unwrap":16}],10:[function(require,module,exports){
},{"15":15,"6":6}],10:[function(_dereq_,module,exports){
'use strict';
var Promise = require('./promise');
var reject = require('./reject');
var resolve = require('./resolve');
var INTERNAL = require('./INTERNAL');
var handlers = require('./handlers');
module.exports = race;
function race(iterable) {
if (Object.prototype.toString.call(iterable) !== '[object Array]') {
return reject(new TypeError('must be an array'));
}
var len = iterable.length;
var called = false;
if (!len) {
return resolve([]);
}
var resolved = 0;
var i = -1;
var promise = new Promise(INTERNAL);
while (++i < len) {
resolver(iterable[i]);
}
return promise;
function resolver(value) {
resolve(value).then(function (response) {
if (!called) {
called = true;
handlers.resolve(promise, response);
}
}, function (error) {
if (!called) {
called = true;
handlers.reject(promise, error);
}
});
}
}
},{"./INTERNAL":4,"./handlers":6,"./promise":8,"./reject":11,"./resolve":12}],11:[function(require,module,exports){
'use strict';
var Promise = require('./promise');
var INTERNAL = require('./INTERNAL');
var handlers = require('./handlers');
var Promise = _dereq_(8);
var INTERNAL = _dereq_(4);
var handlers = _dereq_(6);
module.exports = reject;

@@ -647,8 +306,8 @@

}
},{"./INTERNAL":4,"./handlers":6,"./promise":8}],12:[function(require,module,exports){
},{"4":4,"6":6,"8":8}],11:[function(_dereq_,module,exports){
'use strict';
var Promise = require('./promise');
var INTERNAL = require('./INTERNAL');
var handlers = require('./handlers');
var Promise = _dereq_(8);
var INTERNAL = _dereq_(4);
var handlers = _dereq_(6);
module.exports = resolve;

@@ -683,6 +342,6 @@

}
},{"./INTERNAL":4,"./handlers":6,"./promise":8}],13:[function(require,module,exports){
},{"4":4,"6":6,"8":8}],12:[function(_dereq_,module,exports){
'use strict';
var handlers = require('./handlers');
var tryCatch = require('./tryCatch');
var handlers = _dereq_(6);
var tryCatch = _dereq_(14);
function safelyResolveThenable(self, thenable) {

@@ -717,3 +376,3 @@ // Either fulfill, reject or reject with error

exports.safely = safelyResolveThenable;
},{"./handlers":6,"./tryCatch":15}],14:[function(require,module,exports){
},{"14":14,"6":6}],13:[function(_dereq_,module,exports){
// Lazy man's symbols for states

@@ -724,3 +383,3 @@

exports.PENDING = ['PENDING'];
},{}],15:[function(require,module,exports){
},{}],14:[function(_dereq_,module,exports){
'use strict';

@@ -741,7 +400,7 @@

}
},{}],16:[function(require,module,exports){
},{}],15:[function(_dereq_,module,exports){
'use strict';
var immediate = require('immediate');
var handlers = require('./handlers');
var immediate = _dereq_(16);
var handlers = _dereq_(6);
module.exports = unwrap;

@@ -764,28 +423,44 @@

}
},{"./handlers":6,"immediate":17}],17:[function(require,module,exports){
},{"16":16,"6":6}],16:[function(_dereq_,module,exports){
'use strict';
var types = [
require('./nextTick'),
require('./mutation.js'),
require('./messageChannel'),
require('./stateChange'),
require('./timeout')
_dereq_(2),
_dereq_(18),
_dereq_(17),
_dereq_(19),
_dereq_(20)
];
var draining;
var currentQueue;
var queueIndex = -1;
var queue = [];
function cleanUpNextTick() {
draining = false;
if (currentQueue && currentQueue.length) {
queue = currentQueue.concat(queue);
} else {
queueIndex = -1;
}
if (queue.length) {
nextTick();
}
}
//named nextTick for less confusing stack traces
function nextTick() {
draining = true;
var i, oldQueue;
var len = queue.length;
var timeout = setTimeout(cleanUpNextTick);
while (len) {
oldQueue = queue;
currentQueue = queue;
queue = [];
i = -1;
while (++i < len) {
oldQueue[i]();
while (++queueIndex < len) {
currentQueue[queueIndex]();
}
queueIndex = -1;
len = queue.length;
}
queueIndex = -1;
draining = false;
clearTimeout(timeout);
}

@@ -807,3 +482,3 @@ var scheduleDrain;

}
},{"./messageChannel":18,"./mutation.js":19,"./nextTick":22,"./stateChange":20,"./timeout":21}],18:[function(require,module,exports){
},{"17":17,"18":18,"19":19,"2":2,"20":20}],17:[function(_dereq_,module,exports){
(function (global){

@@ -829,3 +504,3 @@ 'use strict';

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],19:[function(require,module,exports){
},{}],18:[function(_dereq_,module,exports){
(function (global){

@@ -855,3 +530,3 @@ 'use strict';

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],20:[function(require,module,exports){
},{}],19:[function(_dereq_,module,exports){
(function (global){

@@ -883,3 +558,3 @@ 'use strict';

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],21:[function(require,module,exports){
},{}],20:[function(_dereq_,module,exports){
'use strict';

@@ -895,5 +570,308 @@ exports.test = function () {

};
},{}],22:[function(require,module,exports){
},{}],21:[function(_dereq_,module,exports){
'use strict';
},{}]},{},[1])(1)
});
/* jshint -W079 */
var Blob = _dereq_(1);
var Promise = _dereq_(3);
//
// PRIVATE
//
// From http://stackoverflow.com/questions/14967647/ (continues on next line)
// encode-decode-image-with-base64-breaks-image (2013-04-21)
function binaryStringToArrayBuffer(binary) {
var length = binary.length;
var buf = new ArrayBuffer(length);
var arr = new Uint8Array(buf);
var i = -1;
while (++i < length) {
arr[i] = binary.charCodeAt(i);
}
return buf;
}
// Can't find original post, but this is close
// http://stackoverflow.com/questions/6965107/ (continues on next line)
// converting-between-strings-and-arraybuffers
function arrayBufferToBinaryString(buffer) {
var binary = '';
var bytes = new Uint8Array(buffer);
var length = bytes.byteLength;
var i = -1;
while (++i < length) {
binary += String.fromCharCode(bytes[i]);
}
return binary;
}
// doesn't download the image more than once, because
// browsers aren't dumb. uses the cache
function loadImage(src, crossOrigin) {
return new Promise(function (resolve, reject) {
var img = new Image();
if (crossOrigin) {
img.crossOrigin = crossOrigin;
}
img.onload = function () {
resolve(img);
};
img.onerror = reject;
img.src = src;
});
}
function imgToCanvas(img) {
var canvas = document.createElement('canvas');
canvas.width = img.width;
canvas.height = img.height;
// copy the image contents to the canvas
var context = canvas.getContext('2d');
context.drawImage(
img,
0, 0,
img.width, img.height,
0, 0,
img.width, img.height);
return canvas;
}
//
// PUBLIC
//
/**
* Shim for
* [new Blob()]{@link https://developer.mozilla.org/en-US/docs/Web/API/Blob.Blob}
* to support
* [older browsers that use the deprecated <code>BlobBuilder</code> API]{@link http://caniuse.com/blob}.
*
* @param {Array} parts - content of the <code>Blob</code>
* @param {Object} options - usually just <code>{type: myContentType}</code>
* @returns {Blob}
*/
function createBlob(parts, options) {
options = options || {};
if (typeof options === 'string') {
options = {type: options}; // do you a solid here
}
return new Blob(parts, options);
}
/**
* Shim for
* [URL.createObjectURL()]{@link https://developer.mozilla.org/en-US/docs/Web/API/URL.createObjectURL}
* to support browsers that only have the prefixed
* <code>webkitURL</code> (e.g. Android <4.4).
* @param {Blob} blob
* @returns {string} url
*/
function createObjectURL(blob) {
return (window.URL || window.webkitURL).createObjectURL(blob);
}
/**
* Shim for
* [URL.revokeObjectURL()]{@link https://developer.mozilla.org/en-US/docs/Web/API/URL.revokeObjectURL}
* to support browsers that only have the prefixed
* <code>webkitURL</code> (e.g. Android <4.4).
* @param {string} url
*/
function revokeObjectURL(url) {
return (window.URL || window.webkitURL).revokeObjectURL(url);
}
/**
* Convert a <code>Blob</code> to a binary string. Returns a Promise.
*
* @param {Blob} blob
* @returns {Promise} Promise that resolves with the binary string
*/
function blobToBinaryString(blob) {
return new Promise(function (resolve, reject) {
var reader = new FileReader();
var hasBinaryString = typeof reader.readAsBinaryString === 'function';
reader.onloadend = function (e) {
var result = e.target.result || '';
if (hasBinaryString) {
return resolve(result);
}
resolve(arrayBufferToBinaryString(result));
};
reader.onerror = reject;
if (hasBinaryString) {
reader.readAsBinaryString(blob);
} else {
reader.readAsArrayBuffer(blob);
}
});
}
/**
* Convert a base64-encoded string to a <code>Blob</code>. Returns a Promise.
* @param {string} base64
* @param {string|undefined} type - the content type (optional)
* @returns {Promise} Promise that resolves with the <code>Blob</code>
*/
function base64StringToBlob(base64, type) {
return Promise.resolve().then(function () {
var parts = [binaryStringToArrayBuffer(atob(base64))];
return type ? createBlob(parts, {type: type}) : createBlob(parts);
});
}
/**
* Convert a binary string to a <code>Blob</code>. Returns a Promise.
* @param {string} binary
* @param {string|undefined} type - the content type (optional)
* @returns {Promise} Promise that resolves with the <code>Blob</code>
*/
function binaryStringToBlob(binary, type) {
return Promise.resolve().then(function () {
return base64StringToBlob(btoa(binary), type);
});
}
/**
* Convert a <code>Blob</code> to a binary string. Returns a Promise.
* @param {Blob} blob
* @returns {Promise} Promise that resolves with the binary string
*/
function blobToBase64String(blob) {
return blobToBinaryString(blob).then(function (binary) {
return btoa(binary);
});
}
/**
* Convert a data URL string
* (e.g. <code>'data:image/png;base64,iVBORw0KG...'</code>)
* to a <code>Blob</code>. Returns a Promise.
* @param {string} dataURL
* @returns {Promise} Promise that resolves with the <code>Blob</code>
*/
function dataURLToBlob(dataURL) {
return Promise.resolve().then(function () {
var type = dataURL.match(/data:([^;]+)/)[1];
var base64 = dataURL.replace(/^[^,]+,/, '');
var buff = binaryStringToArrayBuffer(atob(base64));
return createBlob([buff], {type: type});
});
}
/**
* Convert an image's <code>src</code> URL to a data URL by loading the image and painting
* it to a <code>canvas</code>. Returns a Promise.
*
* <p/>Note: this will coerce the image to the desired content type, and it
* will only paint the first frame of an animated GIF.
*
* @param {string} src
* @param {string|undefined} type - the content type (optional, defaults to 'image/png')
* @param {string|undefined} crossOrigin - for CORS-enabled images, set this to
* 'Anonymous' to avoid "tainted canvas" errors
* @returns {Promise} Promise that resolves with the data URL string
*/
function imgSrcToDataURL(src, type, crossOrigin) {
type = type || 'image/png';
return loadImage(src, crossOrigin).then(function (img) {
return imgToCanvas(img);
}).then(function (canvas) {
return canvas.toDataURL(type);
});
}
/**
* Convert a <code>canvas</code> to a <code>Blob</code>. Returns a Promise.
* @param {string} canvas
* @param {string|undefined} type - the content type (optional, defaults to 'image/png')
* @returns {Promise} Promise that resolves with the <code>Blob</code>
*/
function canvasToBlob(canvas, type) {
return Promise.resolve().then(function () {
if (typeof canvas.toBlob === 'function') {
return new Promise(function (resolve) {
canvas.toBlob(resolve, type);
});
}
return dataURLToBlob(canvas.toDataURL(type));
});
}
/**
* Convert an image's <code>src</code> URL to a <code>Blob</code> by loading the image and painting
* it to a <code>canvas</code>. Returns a Promise.
*
* <p/>Note: this will coerce the image to the desired content type, and it
* will only paint the first frame of an animated GIF.
*
* @param {string} src
* @param {string|undefined} type - the content type (optional, defaults to 'image/png')
* @param {string|undefined} crossOrigin - for CORS-enabled images, set this to
* 'Anonymous' to avoid "tainted canvas" errors
* @returns {Promise} Promise that resolves with the <code>Blob</code>
*/
function imgSrcToBlob(src, type, crossOrigin) {
type = type || 'image/png';
return loadImage(src, crossOrigin).then(function (img) {
return imgToCanvas(img);
}).then(function (canvas) {
return canvasToBlob(canvas, type);
});
}
/**
* Convert an <code>ArrayBuffer</code> to a <code>Blob</code>. Returns a Promise.
*
* @param {ArrayBuffer} buffer
* @param {string|undefined} type - the content type (optional)
* @returns {Promise} Promise that resolves with the <code>Blob</code>
*/
function arrayBufferToBlob(buffer, type) {
return Promise.resolve().then(function () {
return createBlob([buffer], type);
});
}
/**
* Convert a <code>Blob</code> to an <code>ArrayBuffer</code>. Returns a Promise.
* @param {Blob} blob
* @returns {Promise} Promise that resolves with the <code>ArrayBuffer</code>
*/
function blobToArrayBuffer(blob) {
return new Promise(function (resolve, reject) {
var reader = new FileReader();
reader.onloadend = function (e) {
var result = e.target.result || new ArrayBuffer(0);
resolve(result);
};
reader.onerror = reject;
reader.readAsArrayBuffer(blob);
});
}
module.exports = {
createBlob : createBlob,
createObjectURL : createObjectURL,
revokeObjectURL : revokeObjectURL,
imgSrcToBlob : imgSrcToBlob,
imgSrcToDataURL : imgSrcToDataURL,
canvasToBlob : canvasToBlob,
dataURLToBlob : dataURLToBlob,
blobToBase64String : blobToBase64String,
base64StringToBlob : base64StringToBlob,
binaryStringToBlob : binaryStringToBlob,
blobToBinaryString : blobToBinaryString,
arrayBufferToBlob : arrayBufferToBlob,
blobToArrayBuffer : blobToArrayBuffer
};
},{"1":1,"3":3}]},{},[21])(21)
});

2

dist/blob-util.min.js

@@ -1,1 +0,1 @@

!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var t;"undefined"!=typeof window?t=window:"undefined"!=typeof global?t=global:"undefined"!=typeof self&&(t=self),t.blobUtil=e()}}(function(){return function e(t,n,r){function o(u,a){if(!n[u]){if(!t[u]){var s="function"==typeof require&&require;if(!a&&s)return s(u,!0);if(i)return i(u,!0);var f=new Error("Cannot find module '"+u+"'");throw f.code="MODULE_NOT_FOUND",f}var c=n[u]={exports:{}};t[u][0].call(c.exports,function(e){var n=t[u][1][e];return o(n?n:e)},c,c.exports,e,t,n,r)}return n[u].exports}for(var i="function"==typeof require&&require,u=0;u<r.length;u++)o(r[u]);return o}({1:[function(e,t){"use strict";function n(e){for(var t=e.length,n=new ArrayBuffer(t),r=new Uint8Array(n),o=-1;++o<t;)r[o]=e.charCodeAt(o);return n}function r(e){for(var t="",n=new Uint8Array(e),r=n.byteLength,o=-1;++o<r;)t+=String.fromCharCode(n[o]);return t}function o(e,t){return new L(function(n,r){var o=new Image;t&&(o.crossOrigin=t),o.onload=function(){n(o)},o.onerror=r,o.src=e})}function i(e){var t=document.createElement("canvas");t.width=e.width,t.height=e.height;var n=t.getContext("2d");return n.drawImage(e,0,0,e.width,e.height,0,0,e.width,e.height),t}function u(e,t){return t=t||{},"string"==typeof t&&(t={type:t}),new m(e,t)}function a(e){return(window.URL||window.webkitURL).createObjectURL(e)}function s(e){return(window.URL||window.webkitURL).revokeObjectURL(e)}function f(e){return new L(function(t,n){var o=new FileReader,i="function"==typeof o.readAsBinaryString;o.onloadend=function(e){var n=e.target.result||"";return i?t(n):void t(r(n))},o.onerror=n,i?o.readAsBinaryString(e):o.readAsArrayBuffer(e)})}function c(e,t){return L.resolve().then(function(){var r=[n(atob(e))];return t?u(r,{type:t}):u(r)})}function l(e,t){return L.resolve().then(function(){return c(btoa(e),t)})}function d(e){return f(e).then(function(e){return btoa(e)})}function h(e){return L.resolve().then(function(){var t=e.match(/data:([^;]+)/)[1],r=e.replace(/^[^,]+,/,""),o=n(atob(r));return u([o],{type:t})})}function p(e,t,n){return t=t||"image/png",o(e,n).then(function(e){return i(e)}).then(function(e){return e.toDataURL(t)})}function v(e,t){return L.resolve().then(function(){return"function"==typeof e.toBlob?new L(function(n){e.toBlob(n,t)}):h(e.toDataURL(t))})}function y(e,t,n){return t=t||"image/png",o(e,n).then(function(e){return i(e)}).then(function(e){return v(e,t)})}function b(e,t){return L.resolve().then(function(){return u([e],t)})}function w(e){return f(e).then(function(e){return n(e)})}var g=e("./utils"),m=e("blob"),L=g.Promise;t.exports={createBlob:u,createObjectURL:a,revokeObjectURL:s,imgSrcToBlob:y,imgSrcToDataURL:p,canvasToBlob:v,dataURLToBlob:h,blobToBase64String:d,base64StringToBlob:c,binaryStringToBlob:l,blobToBinaryString:f,arrayBufferToBlob:b,blobToArrayBuffer:w}},{"./utils":2,blob:3}],2:[function(e,t,n){(function(t){"use strict";var r="function"==typeof t.Promise?t.Promise:e("lie");n.Promise=r}).call(this,"undefined"!=typeof global?global:"undefined"!=typeof self?self:"undefined"!=typeof window?window:{})},{lie:7}],3:[function(e,t){(function(e){function n(e){for(var t=0;t<e.length;t++){var n=e[t];if(n.buffer instanceof ArrayBuffer){var r=n.buffer;if(n.byteLength!==r.byteLength){var o=new Uint8Array(n.byteLength);o.set(new Uint8Array(r,n.byteOffset,n.byteLength)),r=o.buffer}e[t]=r}}}function r(e,t){t=t||{};var r=new i;n(e);for(var o=0;o<e.length;o++)r.append(e[o]);return t.type?r.getBlob(t.type):r.getBlob()}function o(e,t){return n(e),new Blob(e,t||{})}var i=e.BlobBuilder||e.WebKitBlobBuilder||e.MSBlobBuilder||e.MozBlobBuilder,u=function(){try{var e=new Blob(["hi"]);return 2===e.size}catch(t){return!1}}(),a=u&&function(){try{var e=new Blob([new Uint8Array([1,2])]);return 2===e.size}catch(t){return!1}}(),s=i&&i.prototype.append&&i.prototype.getBlob;t.exports=function(){return u?a?e.Blob:o:s?r:void 0}()}).call(this,"undefined"!=typeof global?global:"undefined"!=typeof self?self:"undefined"!=typeof window?window:{})},{}],4:[function(e,t){"use strict";function n(){}t.exports=n},{}],5:[function(e,t){"use strict";function n(e){function t(e,t){function r(e){f[t]=e,++c===n&!s&&(s=!0,a.resolve(d,f))}i(e).then(r,function(e){s||(s=!0,a.reject(d,e))})}if("[object Array]"!==Object.prototype.toString.call(e))return o(new TypeError("must be an array"));var n=e.length,s=!1;if(!n)return i([]);for(var f=new Array(n),c=0,l=-1,d=new r(u);++l<n;)t(e[l],l);return d}var 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B.resolve().then(function(){var t=e.match(/data:([^;]+)/)[1],n=e.replace(/^[^,]+,/,""),o=r(atob(n));return f([o],{type:t})})}function v(e,t,n){return t=t||"image/png",i(e,n).then(function(e){return u(e)}).then(function(e){return e.toDataURL(t)})}function y(e,t){return B.resolve().then(function(){return"function"==typeof e.toBlob?new B(function(n){e.toBlob(n,t)}):h(e.toDataURL(t))})}function w(e,t,n){return t=t||"image/png",i(e,n).then(function(e){return u(e)}).then(function(e){return y(e,t)})}function b(e,t){return B.resolve().then(function(){return f([e],t)})}function g(e){return new B(function(t,n){var r=new FileReader;r.onloadend=function(e){var n=e.target.result||new ArrayBuffer(0);t(n)},r.onerror=n,r.readAsArrayBuffer(e)})}var m=e(1),B=e(3);t.exports={createBlob:f,createObjectURL:c,revokeObjectURL:a,imgSrcToBlob:w,imgSrcToDataURL:v,canvasToBlob:y,dataURLToBlob:h,blobToBase64String:p,base64StringToBlob:l,binaryStringToBlob:d,blobToBinaryString:s,arrayBufferToBlob:b,blobToArrayBuffer:g}},{1:1,3:3}]},{},[21])(21)});

13

lib/index.js
'use strict';
var utils = require('./utils');
/* jshint -W079 */
var Blob = require('blob');
var Promise = utils.Promise;
var Promise = require('pouchdb-promise');

@@ -279,4 +278,10 @@ //

function blobToArrayBuffer(blob) {
return blobToBinaryString(blob).then(function (binary) {
return binaryStringToArrayBuffer(binary);
return new Promise(function (resolve, reject) {
var reader = new FileReader();
reader.onloadend = function (e) {
var result = e.target.result || new ArrayBuffer(0);
resolve(result);
};
reader.onerror = reject;
reader.readAsArrayBuffer(blob);
});

@@ -283,0 +288,0 @@ }

23

package.json
{
"name": "blob-util",
"version": "1.1.1",
"version": "1.1.2",
"description": "Utilities for working with Blob objects in the browser",

@@ -27,3 +27,4 @@ "main": "lib/index.js",

"test": "npm run jshint && ./bin/run-test.sh",
"build": "mkdir -p dist && browserify lib/index.js -s blobUtil -o dist/blob-util.js && npm run min",
"build": "mkdirp dist && npm run browserify && npm run min",
"browserify": "browserify . -p bundle-collapser/plugin -s blobUtil | ./bin/es3ify.js | derequire > dist/blob-util.js",
"min": "uglifyjs dist/blob-util.js -mc > dist/blob-util.min.js",

@@ -38,11 +39,12 @@ "dev": "browserify test/test.js > test/test-bundle.js && npm run dev-server",

"blob": "0.0.4",
"es3ify": "^0.1.3",
"jsdoc": "^3.3.0-alpha10",
"lie": "^2.6.0"
"pouchdb-promise": "0.0.0"
},
"devDependencies": {
"bluebird": "^1.0.7",
"browserify": "~2.36.0",
"browserify": "^9.0.3",
"bundle-collapser": "^1.1.4",
"chai": "~1.8.1",
"chai-as-promised": "~4.1.0",
"derequire": "^2.0.0",
"es3ify": "^0.1.3",
"http-server": "~0.5.5",

@@ -53,2 +55,3 @@ "istanbul": "^0.2.7",

"jshint": "~2.3.0",
"mkdirp": "^0.5.0",
"mocha": "~1.18",

@@ -58,11 +61,7 @@ "phantomjs": "^1.9.7-5",

"sauce-connect-launcher": "^0.4.2",
"selenium-standalone": "3.0.2",
"uglify-js": "^2.4.13",
"watchify": "~0.4.1",
"watchify": "^2.4.0",
"wd": "^0.2.21"
},
"browserify": {
"transform": [
"es3ify"
]
}
}

185

README.md

@@ -8,6 +8,4 @@ blob-util

If you want an easy way to work with binary data in the browser, or you don't even know what a Blob is, then this is the library for you.
It offers a tiny (~4KB min+gz) set of cross-browser utilities for translating Blobs to and from different formats:
`blob-util` offers a tiny (~4KB min+gz) set of cross-browser utilities for translating Blobs to and from different formats:
* `<img/>` tags

@@ -18,2 +16,3 @@ * base 64 strings

* data URLs
* canvas

@@ -26,3 +25,4 @@ It's also a good pairing with the attachment API in [PouchDB](http://pouchdb.com).

* [Usage](#usage)
* [Install](#usage)
* [Browser support](#browser-support)
* [Tutorial](#tutorial)

@@ -32,3 +32,3 @@ * [Playground](http://nolanlawson.github.io/blob-util)

Usage
Install
------

@@ -56,2 +56,13 @@

Browser support
-----
* Firefox
* Chrome
* IE 10+
* Safari 6+
* iOS 6+
* Android 4+
* Any browser with either `Blob` or the older `BlobBuilder`; see [caniuse](http://caniuse.com/#search=blob) for details.
Tutorial

@@ -134,2 +145,9 @@ --------

**Returns**: `Blob`
**Example**:
```js
var myBlob = blobUtil.createBlob(['hello world'], {type: 'text/plain'});
```
<a name="createObjectURL"></a>

@@ -147,2 +165,9 @@ ###createObjectURL(blob)

**Returns**: `string` - url
**Example**:
```js
var myUrl = blobUtil.createObjectURL(blob);
```
<a name="revokeObjectURL"></a>

@@ -159,2 +184,8 @@ ###revokeObjectURL(url)

**Example**:
```js
blobUtil.revokeObjectURL(myUrl);
```
<a name="blobToBinaryString"></a>

@@ -168,3 +199,14 @@ ###blobToBinaryString(blob)

**Returns**: `Promise` - Promise that resolves with the binary string
**Returns**: `Promise` - Promise that resolves with the binary string
**Example**:
```js
blobUtil.blobToBinaryString(blob).then(function (binaryString) {
// success
}).catch(function (err) {
// error
});
```
<a name="base64StringToBlob"></a>

@@ -180,2 +222,13 @@ ###base64StringToBlob(base64, type)

**Returns**: `Promise` - Promise that resolves with the <code>Blob</code>
**Example**:
```js
blobUtil.base64StringToBlob(base64String).then(function (blob) {
// success
}).catch(function (err) {
// error
});
```
<a name="binaryStringToBlob"></a>

@@ -191,2 +244,13 @@ ###binaryStringToBlob(binary, type)

**Returns**: `Promise` - Promise that resolves with the <code>Blob</code>
**Example**:
```js
blobUtil.binaryStringToBlob(binaryString).then(function (blob) {
// success
}).catch(function (err) {
// error
});
```
<a name="blobToBase64String"></a>

@@ -201,2 +265,14 @@ ###blobToBase64String(blob)

**Returns**: `Promise` - Promise that resolves with the binary string
**Example**:
```js
blobUtil.blobToBase64String(blob).then(function (base64String) {
// success
}).catch(function (err) {
// error
});
```
<a name="dataURLToBlob"></a>

@@ -213,2 +289,13 @@ ###dataURLToBlob(dataURL)

**Returns**: `Promise` - Promise that resolves with the <code>Blob</code>
**Example**:
```js
blobUtil.dataURLToBlob(dataURL).then(function (blob) {
// success
}).catch(function (err) {
// error
});
```
<a name="imgSrcToDataURL"></a>

@@ -230,2 +317,22 @@ ###imgSrcToDataURL(src, type, crossOrigin)

**Returns**: `Promise` - Promise that resolves with the data URL string
**Examples**:
```js
blobUtil.imgSrcToDataURL('http://mysite.com/img.png').then(function (dataURL) {
// success
}).catch(function (err) {
// error
});
```
```js
blobUtil.imgSrcToDataURL('http://some-other-site.com/img.jpg', 'image/jpeg',
{crossOrigin: 'Anonymous'}).then(function (dataURL) {
// success
}).catch(function (err) {
// error
});
```
<a name="canvasToBlob"></a>

@@ -241,2 +348,25 @@ ###canvasToBlob(canvas, type)

**Returns**: `Promise` - Promise that resolves with the <code>Blob</code>
**Examples**:
```js
blobUtil.canvasToBlob(canvas).then(function (blob) {
// success
}).catch(function (err) {
// error
});
```
Most browsers support converting a canvas to both `'image/png'` and `'image/jpeg'`. You may
also want to try `'image/webp'`, which will work in some browsers like Chrome (and in other browsers, will just fall back to `'image/png'`):
```js
blobUtil.canvasToBlob(canvas, 'image/webp').then(function (blob) {
// success
}).catch(function (err) {
// error
});
```
<a name="imgSrcToBlob"></a>

@@ -258,2 +388,22 @@ ###imgSrcToBlob(src, type, crossOrigin)

**Returns**: `Promise` - Promise that resolves with the <code>Blob</code>
**Examples**:
```js
blobUtil.imgSrcToBlob('http://mysite.com/img.png').then(function (blob) {
// success
}).catch(function (err) {
// error
});
```
```js
blobUtil.imgSrcToBlob('http://some-other-site.com/img.jpg', 'image/jpeg',
{crossOrigin: 'Anonymous'}).then(function (blob) {
// success
}).catch(function (err) {
// error
});
```
<a name="arrayBufferToBlob"></a>

@@ -269,2 +419,13 @@ ###arrayBufferToBlob(buffer, type)

**Returns**: `Promise` - Promise that resolves with the <code>Blob</code>
**Example**:
```js
blobUtil.arrayBufferToBlob(arrayBuff, 'audio/mpeg').then(function (blob) {
// success
}).catch(function (err) {
// error
});
```
<a name="blobToArrayBuffer"></a>

@@ -280,2 +441,12 @@ ###blobToArrayBuffer(blob)

**Example**:
```js
blobUtil.blobToArrayBuffer(blob).then(function (arrayBuff) {
// success
}).catch(function (err) {
// error
});
```
Credits

@@ -307,2 +478,4 @@ ----

Update: I also manually added a bunch of code samples to `README.md` because jsdoc didn't seem to support that. So... yeah, jsdoc might not be so helpful anymore.
Testing the library

@@ -309,0 +482,0 @@ ----

lib/utils.js
.idea/blob-util.iml

Sorry, the diff of this file is not supported yet

.idea/workspace.xml

Sorry, the diff of this file is not supported yet

test/test-bundle.js

Sorry, the diff of this file is too big to display

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