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bootstrap-source/bootstrap-3.0.3/docs-assets/js/filesaver.js
author stetrabby <info@trabucchi.de>
Sat, 18 Jan 2014 10:22:04 +0100
changeset 101 a06174484abc
parent 54 0ded9d7748b7
permissions -rwxr-xr-x
href a fixed 
     1 /* Blob.js

     2  * A Blob implementation.

     3  * 2013-06-20

     4  *

     5  * By Eli Grey, http://eligrey.com

     6  * By Devin Samarin, https://github.com/eboyjr

     7  * License: X11/MIT

     8  *   See LICENSE.md

     9  */

    10 

    11 /*global self, unescape */

    12 /*jslint bitwise: true, regexp: true, confusion: true, es5: true, vars: true, white: true,

    13   plusplus: true */

    14 

    15 /*! @source http://purl.eligrey.com/github/Blob.js/blob/master/Blob.js */

    16 

    17 if (!(typeof Blob === "function" || typeof Blob === "object") || typeof URL === "undefined")

    18 if ((typeof Blob === "function" || typeof Blob === "object") && typeof webkitURL !== "undefined") self.URL = webkitURL;

    19 else var Blob = (function (view) {

    20 	"use strict";

    21 

    22 	var BlobBuilder = view.BlobBuilder || view.WebKitBlobBuilder || view.MozBlobBuilder || view.MSBlobBuilder || (function(view) {

    23 		var

    24 			  get_class = function(object) {

    25 				return Object.prototype.toString.call(object).match(/^\[object\s(.*)\]$/)[1];

    26 			}

    27 			, FakeBlobBuilder = function BlobBuilder() {

    28 				this.data = [];

    29 			}

    30 			, FakeBlob = function Blob(data, type, encoding) {

    31 				this.data = data;

    32 				this.size = data.length;

    33 				this.type = type;

    34 				this.encoding = encoding;

    35 			}

    36 			, FBB_proto = FakeBlobBuilder.prototype

    37 			, FB_proto = FakeBlob.prototype

    38 			, FileReaderSync = view.FileReaderSync

    39 			, FileException = function(type) {

    40 				this.code = this[this.name = type];

    41 			}

    42 			, file_ex_codes = (

    43 				  "NOT_FOUND_ERR SECURITY_ERR ABORT_ERR NOT_READABLE_ERR ENCODING_ERR "

    44 				+ "NO_MODIFICATION_ALLOWED_ERR INVALID_STATE_ERR SYNTAX_ERR"

    45 			).split(" ")

    46 			, file_ex_code = file_ex_codes.length

    47 			, real_URL = view.URL || view.webkitURL || view

    48 			, real_create_object_URL = real_URL.createObjectURL

    49 			, real_revoke_object_URL = real_URL.revokeObjectURL

    50 			, URL = real_URL

    51 			, btoa = view.btoa

    52 			, atob = view.atob

    53 

    54 			, ArrayBuffer = view.ArrayBuffer

    55 			, Uint8Array = view.Uint8Array

    56 		;

    57 		FakeBlob.fake = FB_proto.fake = true;

    58 		while (file_ex_code--) {

    59 			FileException.prototype[file_ex_codes[file_ex_code]] = file_ex_code + 1;

    60 		}

    61 		if (!real_URL.createObjectURL) {

    62 			URL = view.URL = {};

    63 		}

    64 		URL.createObjectURL = function(blob) {

    65 			var

    66 				  type = blob.type

    67 				, data_URI_header

    68 			;

    69 			if (type === null) {

    70 				type = "application/octet-stream";

    71 			}

    72 			if (blob instanceof FakeBlob) {

    73 				data_URI_header = "data:" + type;

    74 				if (blob.encoding === "base64") {

    75 					return data_URI_header + ";base64," + blob.data;

    76 				} else if (blob.encoding === "URI") {

    77 					return data_URI_header + "," + decodeURIComponent(blob.data);

    78 				} if (btoa) {

    79 					return data_URI_header + ";base64," + btoa(blob.data);

    80 				} else {

    81 					return data_URI_header + "," + encodeURIComponent(blob.data);

    82 				}

    83 			} else if (real_create_object_URL) {

    84 				return real_create_object_URL.call(real_URL, blob);

    85 			}

    86 		};

    87 		URL.revokeObjectURL = function(object_URL) {

    88 			if (object_URL.substring(0, 5) !== "data:" && real_revoke_object_URL) {

    89 				real_revoke_object_URL.call(real_URL, object_URL);

    90 			}

    91 		};

    92 		FBB_proto.append = function(data/*, endings*/) {

    93 			var bb = this.data;

    94 			// decode data to a binary string

    95 			if (Uint8Array && (data instanceof ArrayBuffer || data instanceof Uint8Array)) {

    96 				var

    97 					  str = ""

    98 					, buf = new Uint8Array(data)

    99 					, i = 0

   100 					, buf_len = buf.length

   101 				;

   102 				for (; i < buf_len; i++) {

   103 					str += String.fromCharCode(buf[i]);

   104 				}

   105 				bb.push(str);

   106 			} else if (get_class(data) === "Blob" || get_class(data) === "File") {

   107 				if (FileReaderSync) {

   108 					var fr = new FileReaderSync;

   109 					bb.push(fr.readAsBinaryString(data));

   110 				} else {

   111 					// async FileReader won't work as BlobBuilder is sync

   112 					throw new FileException("NOT_READABLE_ERR");

   113 				}

   114 			} else if (data instanceof FakeBlob) {

   115 				if (data.encoding === "base64" && atob) {

   116 					bb.push(atob(data.data));

   117 				} else if (data.encoding === "URI") {

   118 					bb.push(decodeURIComponent(data.data));

   119 				} else if (data.encoding === "raw") {

   120 					bb.push(data.data);

   121 				}

   122 			} else {

   123 				if (typeof data !== "string") {

   124 					data += ""; // convert unsupported types to strings

   125 				}

   126 				// decode UTF-16 to binary string

   127 				bb.push(unescape(encodeURIComponent(data)));

   128 			}

   129 		};

   130 		FBB_proto.getBlob = function(type) {

   131 			if (!arguments.length) {

   132 				type = null;

   133 			}

   134 			return new FakeBlob(this.data.join(""), type, "raw");

   135 		};

   136 		FBB_proto.toString = function() {

   137 			return "[object BlobBuilder]";

   138 		};

   139 		FB_proto.slice = function(start, end, type) {

   140 			var args = arguments.length;

   141 			if (args < 3) {

   142 				type = null;

   143 			}

   144 			return new FakeBlob(

   145 				  this.data.slice(start, args > 1 ? end : this.data.length)

   146 				, type

   147 				, this.encoding

   148 			);

   149 		};

   150 		FB_proto.toString = function() {

   151 			return "[object Blob]";

   152 		};

   153 		return FakeBlobBuilder;

   154 	}(view));

   155 

   156 	return function Blob(blobParts, options) {

   157 		var type = options ? (options.type || "") : "";

   158 		var builder = new BlobBuilder();

   159 		if (blobParts) {

   160 			for (var i = 0, len = blobParts.length; i < len; i++) {

   161 				builder.append(blobParts[i]);

   162 			}

   163 		}

   164 		return builder.getBlob(type);

   165 	};

   166 }(self));

   167 

   168 /* FileSaver.js

   169  * A saveAs() FileSaver implementation.

   170  * 2013-10-21

   171  *

   172  * By Eli Grey, http://eligrey.com

   173  * License: X11/MIT

   174  *   See LICENSE.md

   175  */

   176 

   177 /*global self */

   178 /*jslint bitwise: true, regexp: true, confusion: true, es5: true, vars: true, white: true,

   179   plusplus: true */

   180 

   181 /*! @source http://purl.eligrey.com/github/FileSaver.js/blob/master/FileSaver.js */

   182 

   183 var saveAs = saveAs

   184   || (typeof navigator !== 'undefined' && navigator.msSaveOrOpenBlob && navigator.msSaveOrOpenBlob.bind(navigator))

   185   || (function(view) {

   186 	"use strict";

   187 	var

   188 		  doc = view.document

   189 		  // only get URL when necessary in case BlobBuilder.js hasn't overridden it yet

   190 		, get_URL = function() {

   191 			return view.URL || view.webkitURL || view;

   192 		}

   193 		, URL = view.URL || view.webkitURL || view

   194 		, save_link = doc.createElementNS("http://www.w3.org/1999/xhtml", "a")

   195 		, can_use_save_link =  !view.externalHost && "download" in save_link

   196 		, click = function(node) {

   197 			var event = doc.createEvent("MouseEvents");

   198 			event.initMouseEvent(

   199 				"click", true, false, view, 0, 0, 0, 0, 0

   200 				, false, false, false, false, 0, null

   201 			);

   202 			node.dispatchEvent(event);

   203 		}

   204 		, webkit_req_fs = view.webkitRequestFileSystem

   205 		, req_fs = view.requestFileSystem || webkit_req_fs || view.mozRequestFileSystem

   206 		, throw_outside = function (ex) {

   207 			(view.setImmediate || view.setTimeout)(function() {

   208 				throw ex;

   209 			}, 0);

   210 		}

   211 		, force_saveable_type = "application/octet-stream"

   212 		, fs_min_size = 0

   213 		, deletion_queue = []

   214 		, process_deletion_queue = function() {

   215 			var i = deletion_queue.length;

   216 			while (i--) {

   217 				var file = deletion_queue[i];

   218 				if (typeof file === "string") { // file is an object URL

   219 					URL.revokeObjectURL(file);

   220 				} else { // file is a File

   221 					file.remove();

   222 				}

   223 			}

   224 			deletion_queue.length = 0; // clear queue

   225 		}

   226 		, dispatch = function(filesaver, event_types, event) {

   227 			event_types = [].concat(event_types);

   228 			var i = event_types.length;

   229 			while (i--) {

   230 				var listener = filesaver["on" + event_types[i]];

   231 				if (typeof listener === "function") {

   232 					try {

   233 						listener.call(filesaver, event || filesaver);

   234 					} catch (ex) {

   235 						throw_outside(ex);

   236 					}

   237 				}

   238 			}

   239 		}

   240 		, FileSaver = function(blob, name) {

   241 			// First try a.download, then web filesystem, then object URLs

   242 			var

   243 				  filesaver = this

   244 				, type = blob.type

   245 				, blob_changed = false

   246 				, object_url

   247 				, target_view

   248 				, get_object_url = function() {

   249 					var object_url = get_URL().createObjectURL(blob);

   250 					deletion_queue.push(object_url);

   251 					return object_url;

   252 				}

   253 				, dispatch_all = function() {

   254 					dispatch(filesaver, "writestart progress write writeend".split(" "));

   255 				}

   256 				// on any filesys errors revert to saving with object URLs

   257 				, fs_error = function() {

   258 					// don't create more object URLs than needed

   259 					if (blob_changed || !object_url) {

   260 						object_url = get_object_url(blob);

   261 					}

   262 					if (target_view) {

   263 						target_view.location.href = object_url;

   264 					} else {

   265                         window.open(object_url, "_blank");

   266                     }

   267 					filesaver.readyState = filesaver.DONE;

   268 					dispatch_all();

   269 				}

   270 				, abortable = function(func) {

   271 					return function() {

   272 						if (filesaver.readyState !== filesaver.DONE) {

   273 							return func.apply(this, arguments);

   274 						}

   275 					};

   276 				}

   277 				, create_if_not_found = {create: true, exclusive: false}

   278 				, slice

   279 			;

   280 			filesaver.readyState = filesaver.INIT;

   281 			if (!name) {

   282 				name = "download";

   283 			}

   284 			if (can_use_save_link) {

   285 				object_url = get_object_url(blob);

   286 				// FF for Android has a nasty garbage collection mechanism

   287 				// that turns all objects that are not pure javascript into 'deadObject'

   288 				// this means `doc` and `save_link` are unusable and need to be recreated

   289 				// `view` is usable though:

   290 				doc = view.document;

   291 				save_link = doc.createElementNS("http://www.w3.org/1999/xhtml", "a");

   292 				save_link.href = object_url;

   293 				save_link.download = name;

   294 				var event = doc.createEvent("MouseEvents");

   295 				event.initMouseEvent(

   296 					"click", true, false, view, 0, 0, 0, 0, 0

   297 					, false, false, false, false, 0, null

   298 				);

   299 				save_link.dispatchEvent(event);

   300 				filesaver.readyState = filesaver.DONE;

   301 				dispatch_all();

   302 				return;

   303 			}

   304 			// Object and web filesystem URLs have a problem saving in Google Chrome when

   305 			// viewed in a tab, so I force save with application/octet-stream

   306 			// http://code.google.com/p/chromium/issues/detail?id=91158

   307 			if (view.chrome && type && type !== force_saveable_type) {

   308 				slice = blob.slice || blob.webkitSlice;

   309 				blob = slice.call(blob, 0, blob.size, force_saveable_type);

   310 				blob_changed = true;

   311 			}

   312 			// Since I can't be sure that the guessed media type will trigger a download

   313 			// in WebKit, I append .download to the filename.

   314 			// https://bugs.webkit.org/show_bug.cgi?id=65440

   315 			if (webkit_req_fs && name !== "download") {

   316 				name += ".download";

   317 			}

   318 			if (type === force_saveable_type || webkit_req_fs) {

   319 				target_view = view;

   320 			}

   321 			if (!req_fs) {

   322 				fs_error();

   323 				return;

   324 			}

   325 			fs_min_size += blob.size;

   326 			req_fs(view.TEMPORARY, fs_min_size, abortable(function(fs) {

   327 				fs.root.getDirectory("saved", create_if_not_found, abortable(function(dir) {

   328 					var save = function() {

   329 						dir.getFile(name, create_if_not_found, abortable(function(file) {

   330 							file.createWriter(abortable(function(writer) {

   331 								writer.onwriteend = function(event) {

   332 									target_view.location.href = file.toURL();

   333 									deletion_queue.push(file);

   334 									filesaver.readyState = filesaver.DONE;

   335 									dispatch(filesaver, "writeend", event);

   336 								};

   337 								writer.onerror = function() {

   338 									var error = writer.error;

   339 									if (error.code !== error.ABORT_ERR) {

   340 										fs_error();

   341 									}

   342 								};

   343 								"writestart progress write abort".split(" ").forEach(function(event) {

   344 									writer["on" + event] = filesaver["on" + event];

   345 								});

   346 								writer.write(blob);

   347 								filesaver.abort = function() {

   348 									writer.abort();

   349 									filesaver.readyState = filesaver.DONE;

   350 								};

   351 								filesaver.readyState = filesaver.WRITING;

   352 							}), fs_error);

   353 						}), fs_error);

   354 					};

   355 					dir.getFile(name, {create: false}, abortable(function(file) {

   356 						// delete file if it already exists

   357 						file.remove();

   358 						save();

   359 					}), abortable(function(ex) {

   360 						if (ex.code === ex.NOT_FOUND_ERR) {

   361 							save();

   362 						} else {

   363 							fs_error();

   364 						}

   365 					}));

   366 				}), fs_error);

   367 			}), fs_error);

   368 		}

   369 		, FS_proto = FileSaver.prototype

   370 		, saveAs = function(blob, name) {

   371 			return new FileSaver(blob, name);

   372 		}

   373 	;

   374 	FS_proto.abort = function() {

   375 		var filesaver = this;

   376 		filesaver.readyState = filesaver.DONE;

   377 		dispatch(filesaver, "abort");

   378 	};

   379 	FS_proto.readyState = FS_proto.INIT = 0;

   380 	FS_proto.WRITING = 1;

   381 	FS_proto.DONE = 2;

   382 

   383 	FS_proto.error =

   384 	FS_proto.onwritestart =

   385 	FS_proto.onprogress =

   386 	FS_proto.onwrite =

   387 	FS_proto.onabort =

   388 	FS_proto.onerror =

   389 	FS_proto.onwriteend =

   390 		null;

   391 

   392 	view.addEventListener("unload", process_deletion_queue, false);

   393 	return saveAs;

   394 }(this.self || this.window || this.content));

   395 // `self` is undefined in Firefox for Android content script context

   396 // while `this` is nsIContentFrameMessageManager

   397 // with an attribute `content` that corresponds to the window

   398 

   399 if (typeof module !== 'undefined') module.exports = saveAs;
eskp-app/1.0

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