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save as for browser

fix for original version

Αυτός ο κώδικας δεν πρέπει να εγκατασταθεί άμεσα. Είναι μια βιβλιοθήκη για άλλους κώδικες που περιλαμβάνεται μέσω της οδηγίας meta // @require https://update.greatest.deepsurf.us/scripts/38382/250722/save%20as%20for%20browser.js 

  1. var saveAs = saveAs
  2.   // IE 10+ (native saveAs)
  3.   || (typeof navigator !== "undefined" &&
  4.       navigator.msSaveOrOpenBlob && navigator.msSaveOrOpenBlob.bind(navigator))
  5.   // Everyone else
  6.   || (function(view) {
  7. 	"use strict";
  8. 	// IE <10 is explicitly unsupported
  9. 	if (typeof navigator !== "undefined" &&
  10. 	    /MSIE [1-9]\./.test(navigator.userAgent)) {
  11. 		return;
  12. 	}
  13. 	var
  14. 		  doc = view.document
  15. 		  // only get URL when necessary in case Blob.js hasn't overridden it yet
  16. 		, get_URL = function() {
  17. 			return view.URL || view.webkitURL || view;
  18. 		}
  19. , save_link = doc.createElementNS("http://www.w3.org/1999/xhtml", "a")
  20. 		, can_use_save_link = "download" in save_link
  21. 		, click = function(node) {
  22. 			var event = new MouseEvent("click");
  23. 			node.dispatchEvent(event);
  24. 		}
  25. 		, webkit_req_fs = view.webkitRequestFileSystem
  26. 		, req_fs = view.requestFileSystem || webkit_req_fs || view.mozRequestFileSystem
  27. 		, throw_outside = function(ex) {
  28. 			(view.setImmediate || view.setTimeout)(function() {
  29. 				throw ex;
  30. 			}, 0);
  31. 		}
  32. 		, force_saveable_type = "application/octet-stream"
  33. 		, fs_min_size = 0
  34. 		, deletion_queue = []
  35. 		, process_deletion_queue = function() {
  36. 			var i = deletion_queue.length;
  37. 			while (i--) {
  38. 				var file = deletion_queue[i];
  39. 				if (typeof file === "string") { // file is an object URL
  40. 					get_URL().revokeObjectURL(file);
  41. 				} else { // file is a File
  42. 					file.remove();
  43. 				}
  44. 			}
  45. 			deletion_queue.length = 0; // clear queue
  46. 		}
  47. 		, dispatch = function(filesaver, event_types, event) {
  48. 			event_types = [].concat(event_types);
  49. 			var i = event_types.length;
  50. 			while (i--) {
  51. 				var listener = filesaver["on" + event_types[i]];
  52. 				if (typeof listener === "function") {
  53. 					try {
  54. 						listener.call(filesaver, event || filesaver);
  55. 					} catch (ex) {
  56. 						throw_outside(ex);
  57. 					}
  58. 				}
  59. 			}
  60. 		}
  61. 		, FileSaver = function(blob, name) {
  62. 			// First try a.download, then web filesystem, then object URLs
  63. 			var
  64. 				  filesaver = this
  65. 				, type = blob.type
  66. 				, blob_changed = false
  67. 				, object_url
  68. 				, target_view
  69. 				, get_object_url = function() {
  70. 					var object_url = get_URL().createObjectURL(blob);
  71. 					deletion_queue.push(object_url);
  72. 					return object_url;
  73. 				}
  74. 				, dispatch_all = function() {
  75. 					dispatch(filesaver, "writestart progress write writeend".split(" "));
  76. 				}
  77. 				// on any filesys errors revert to saving with object URLs
  78. 				, fs_error = function() {
  79. 					// don't create more object URLs than needed
  80. 					if (blob_changed || !object_url) {
  81. 						object_url = get_object_url(blob);
  82. 					}
  83. 					if (target_view) {
  84. 						target_view.location.href = object_url;
  85. 					} else {
  86. 						window.open(object_url, "_blank");
  87. 					}
  88. 					filesaver.readyState = filesaver.DONE;
  89. 					dispatch_all();
  90. 				}
  91. 				, abortable = function(func) {
  92. 					return function() {
  93. 						if (filesaver.readyState !== filesaver.DONE) {
  94. 							return func.apply(this, arguments);
  95. 						}
  96. 					};
  97. 				}
  98. 				, create_if_not_found = {create: true, exclusive: false}
  99. 				, slice
  100. 			;
  101. 			filesaver.readyState = filesaver.INIT;
  102. 			if (!name) {
  103. 				name = "download";
  104. 			}
  105. 			if (can_use_save_link) {
  106. 				object_url = get_object_url(blob);
  107. 				save_link.href = object_url;
  108. 				save_link.download = name;
  109. 				click(save_link);
  110. 				filesaver.readyState = filesaver.DONE;
  111. 				dispatch_all();
  112. 				return;
  113. 			}
  114. 			// Object and web filesystem URLs have a problem saving in Google Chrome when
  115. 			// viewed in a tab, so I force save with application/octet-stream
  116. 			// http://code.google.com/p/chromium/issues/detail?id=91158
  117. 			if (view.chrome && type && type !== force_saveable_type) {
  118. 				slice = blob.slice || blob.webkitSlice;
  119. 				blob = slice.call(blob, 0, blob.size, force_saveable_type);
  120. 				blob_changed = true;
  121. 			}
  122. 			// Since I can't be sure that the guessed media type will trigger a download
  123. 			// in WebKit, I append .download to the filename.
  124. 			// https://bugs.webkit.org/show_bug.cgi?id=65440
  125. 			if (webkit_req_fs && name !== "download") {
  126. 				name += ".download";
  127. 			}
  128. 			if (type === force_saveable_type || webkit_req_fs) {
  129. 				target_view = view;
  130. 			}
  131. 			if (!req_fs) {
  132. 				fs_error();
  133. 				return;
  134. 			}
  135. 			fs_min_size += blob.size;
  136. 			req_fs(view.TEMPORARY, fs_min_size, abortable(function(fs) {
  137. 				fs.root.getDirectory("saved", create_if_not_found, abortable(function(dir) {
  138. 					var save = function() {
  139. 						dir.getFile(name, create_if_not_found, abortable(function(file) {
  140. 							file.createWriter(abortable(function(writer) {
  141. 								writer.onwriteend = function(event) {
  142. 									target_view.location.href = file.toURL();
  143. 									deletion_queue.push(file);
  144. 									filesaver.readyState = filesaver.DONE;
  145. 									dispatch(filesaver, "writeend", event);
  146. 								};
  147. 								writer.onerror = function() {
  148. 									var error = writer.error;
  149. 									if (error.code !== error.ABORT_ERR) {
  150. 										fs_error();
  151. 									}
  152. 								};
  153. 								"writestart progress write abort".split(" ").forEach(function(event) {
  154. 									writer["on" + event] = filesaver["on" + event];
  155. 								});
  156. 								writer.write(blob);
  157. 								filesaver.abort = function() {
  158. 									writer.abort();
  159. 									filesaver.readyState = filesaver.DONE;
  160. 								};
  161. 								filesaver.readyState = filesaver.WRITING;
  162. 							}), fs_error);
  163. 						}), fs_error);
  164. 					};
  165. 					dir.getFile(name, {create: false}, abortable(function(file) {
  166. 						// delete file if it already exists
  167. 						file.remove();
  168. 						save();
  169. 					}), abortable(function(ex) {
  170. 						if (ex.code === ex.NOT_FOUND_ERR) {
  171. 							save();
  172. 						} else {
  173. 							fs_error();
  174. 						}
  175. 					}));
  176. 				}), fs_error);
  177. 			}), fs_error);
  178. 		}
  179. 		, FS_proto = FileSaver.prototype
  180. 		, saveAs = function(blob, name) {
  181. 			return new FileSaver(blob, name);
  182. 		}
  183. 	;
  184. 	FS_proto.abort = function() {
  185. 		var filesaver = this;
  186. 		filesaver.readyState = filesaver.DONE;
  187. 		dispatch(filesaver, "abort");
  188. 	};
  189. 	FS_proto.readyState = FS_proto.INIT = 0;
  190. 	FS_proto.WRITING = 1;
  191. 	FS_proto.DONE = 2;
  192.  
  193. 	FS_proto.error =
  194. 	FS_proto.onwritestart =
  195. 	FS_proto.onprogress =
  196. 	FS_proto.onwrite =
  197. 	FS_proto.onabort =
  198. 	FS_proto.onerror =
  199. 	FS_proto.onwriteend =
  200. 		null;
  201.  
  202. 	view.addEventListener("unload", process_deletion_queue, false);
  203. 	saveAs.unload = function() {
  204. 		process_deletion_queue();
  205. 		view.removeEventListener("unload", process_deletion_queue, false);
  206. 	};
  207. 	return saveAs;
  208. }(
  209. 	   typeof self !== "undefined" && self
  210. 	|| typeof window !== "undefined" && window
  211. 	|| this.content
  212. ));
  213. // `self` is undefined in Firefox for Android content script context
  214. // while `this` is nsIContentFrameMessageManager
  215. // with an attribute `content` that corresponds to the window
  216.  
  217. if (typeof module !== "undefined" && module !== null) {
  218.   module.exports = saveAs;
  219. } else if ((typeof define !== "undefined" && define !== null) && (define.amd != null)) {
  220.   define([], function() {
  221.     return saveAs;
  222.   });
  223. }