| /* FileSaver.js |
| * A saveAs() FileSaver implementation. |
| * 2015-03-04 |
| * |
| * By Eli Grey, http://eligrey.com |
| * License: X11/MIT |
| * See https://github.com/eligrey/FileSaver.js/blob/master/LICENSE.md |
| */ |
| |
| /*global self */ |
| /*jslint bitwise: true, indent: 4, laxbreak: true, laxcomma: true, smarttabs: true, plusplus: true */ |
| |
| /*! @source http://purl.eligrey.com/github/FileSaver.js/blob/master/FileSaver.js */ |
| |
| var saveAs = saveAs |
| // IE 10+ (native saveAs) |
| || (typeof navigator !== "undefined" && |
| navigator.msSaveOrOpenBlob && navigator.msSaveOrOpenBlob.bind(navigator)) |
| // Everyone else |
| || (function(view) { |
| "use strict"; |
| // IE <10 is explicitly unsupported |
| if (typeof navigator !== "undefined" && |
| /MSIE [1-9]\./.test(navigator.userAgent)) { |
| return; |
| } |
| var |
| doc = view.document |
| // only get URL when necessary in case Blob.js hasn't overridden it yet |
| , get_URL = function() { |
| return view.URL || view.webkitURL || view; |
| } |
| , save_link = doc.createElementNS("http://www.w3.org/1999/xhtml", "a") |
| , can_use_save_link = "download" in save_link |
| , click = function(node) { |
| var event = doc.createEvent("MouseEvents"); |
| event.initMouseEvent( |
| "click", true, false, view, 0, 0, 0, 0, 0 |
| , false, false, false, false, 0, null |
| ); |
| node.dispatchEvent(event); |
| } |
| , webkit_req_fs = view.webkitRequestFileSystem |
| , req_fs = view.requestFileSystem || webkit_req_fs || view.mozRequestFileSystem |
| , throw_outside = function(ex) { |
| (view.setImmediate || view.setTimeout)(function() { |
| throw ex; |
| }, 0); |
| } |
| , force_saveable_type = "application/octet-stream" |
| , fs_min_size = 0 |
| // See https://code.google.com/p/chromium/issues/detail?id=375297#c7 and |
| // https://github.com/eligrey/FileSaver.js/commit/485930a#commitcomment-8768047 |
| // for the reasoning behind the timeout and revocation flow |
| , arbitrary_revoke_timeout = 500 // in ms |
| , revoke = function(file) { |
| var revoker = function() { |
| if (typeof file === "string") { // file is an object URL |
| get_URL().revokeObjectURL(file); |
| } else { // file is a File |
| file.remove(); |
| } |
| }; |
| if (view.chrome) { |
| revoker(); |
| } else { |
| setTimeout(revoker, arbitrary_revoke_timeout); |
| } |
| } |
| , dispatch = function(filesaver, event_types, event) { |
| event_types = [].concat(event_types); |
| var i = event_types.length; |
| while (i--) { |
| var listener = filesaver["on" + event_types[i]]; |
| if (typeof listener === "function") { |
| try { |
| listener.call(filesaver, event || filesaver); |
| } catch (ex) { |
| throw_outside(ex); |
| } |
| } |
| } |
| } |
| , FileSaver = function(blob, name) { |
| // First try a.download, then web filesystem, then object URLs |
| var |
| filesaver = this |
| , type = blob.type |
| , blob_changed = false |
| , object_url |
| , target_view |
| , dispatch_all = function() { |
| dispatch(filesaver, "writestart progress write writeend".split(" ")); |
| } |
| // on any filesys errors revert to saving with object URLs |
| , fs_error = function() { |
| // don't create more object URLs than needed |
| if (blob_changed || !object_url) { |
| object_url = get_URL().createObjectURL(blob); |
| } |
| if (target_view) { |
| target_view.location.href = object_url; |
| } else { |
| var new_tab = view.open(object_url, "_blank"); |
| if (new_tab == undefined && typeof safari !== "undefined") { |
| //Apple do not allow window.open, see http://bit.ly/1kZffRI |
| view.location.href = object_url |
| } |
| } |
| filesaver.readyState = filesaver.DONE; |
| dispatch_all(); |
| revoke(object_url); |
| } |
| , abortable = function(func) { |
| return function() { |
| if (filesaver.readyState !== filesaver.DONE) { |
| return func.apply(this, arguments); |
| } |
| }; |
| } |
| , create_if_not_found = {create: true, exclusive: false} |
| , slice |
| ; |
| filesaver.readyState = filesaver.INIT; |
| if (!name) { |
| name = "download"; |
| } |
| if (can_use_save_link) { |
| object_url = get_URL().createObjectURL(blob); |
| save_link.href = object_url; |
| save_link.download = name; |
| click(save_link); |
| filesaver.readyState = filesaver.DONE; |
| dispatch_all(); |
| revoke(object_url); |
| return; |
| } |
| // prepend BOM for UTF-8 XML and text/plain types |
| if (/^\s*(?:text\/(?:plain|xml)|application\/xml|\S*\/\S*\+xml)\s*;.*charset\s*=\s*utf-8/i.test(blob.type)) { |
| blob = new Blob(["\ufeff", blob], {type: blob.type}); |
| } |
| // Object and web filesystem URLs have a problem saving in Google Chrome when |
| // viewed in a tab, so I force save with application/octet-stream |
| // http://code.google.com/p/chromium/issues/detail?id=91158 |
| // Update: Google errantly closed 91158, I submitted it again: |
| // https://code.google.com/p/chromium/issues/detail?id=389642 |
| if (view.chrome && type && type !== force_saveable_type) { |
| slice = blob.slice || blob.webkitSlice; |
| blob = slice.call(blob, 0, blob.size, force_saveable_type); |
| blob_changed = true; |
| } |
| // Since I can't be sure that the guessed media type will trigger a download |
| // in WebKit, I append .download to the filename. |
| // https://bugs.webkit.org/show_bug.cgi?id=65440 |
| if (webkit_req_fs && name !== "download") { |
| name += ".download"; |
| } |
| if (type === force_saveable_type || webkit_req_fs) { |
| target_view = view; |
| } |
| if (!req_fs) { |
| fs_error(); |
| return; |
| } |
| fs_min_size += blob.size; |
| req_fs(view.TEMPORARY, fs_min_size, abortable(function(fs) { |
| fs.root.getDirectory("saved", create_if_not_found, abortable(function(dir) { |
| var save = function() { |
| dir.getFile(name, create_if_not_found, abortable(function(file) { |
| file.createWriter(abortable(function(writer) { |
| writer.onwriteend = function(event) { |
| target_view.location.href = file.toURL(); |
| filesaver.readyState = filesaver.DONE; |
| dispatch(filesaver, "writeend", event); |
| revoke(file); |
| }; |
| writer.onerror = function() { |
| var error = writer.error; |
| if (error.code !== error.ABORT_ERR) { |
| fs_error(); |
| } |
| }; |
| "writestart progress write abort".split(" ").forEach(function(event) { |
| writer["on" + event] = filesaver["on" + event]; |
| }); |
| writer.write(blob); |
| filesaver.abort = function() { |
| writer.abort(); |
| filesaver.readyState = filesaver.DONE; |
| }; |
| filesaver.readyState = filesaver.WRITING; |
| }), fs_error); |
| }), fs_error); |
| }; |
| dir.getFile(name, {create: false}, abortable(function(file) { |
| // delete file if it already exists |
| file.remove(); |
| save(); |
| }), abortable(function(ex) { |
| if (ex.code === ex.NOT_FOUND_ERR) { |
| save(); |
| } else { |
| fs_error(); |
| } |
| })); |
| }), fs_error); |
| }), fs_error); |
| } |
| , FS_proto = FileSaver.prototype |
| , saveAs = function(blob, name) { |
| return new FileSaver(blob, name); |
| } |
| ; |
| FS_proto.abort = function() { |
| var filesaver = this; |
| filesaver.readyState = filesaver.DONE; |
| dispatch(filesaver, "abort"); |
| }; |
| FS_proto.readyState = FS_proto.INIT = 0; |
| FS_proto.WRITING = 1; |
| FS_proto.DONE = 2; |
| |
| FS_proto.error = |
| FS_proto.onwritestart = |
| FS_proto.onprogress = |
| FS_proto.onwrite = |
| FS_proto.onabort = |
| FS_proto.onerror = |
| FS_proto.onwriteend = |
| null; |
| |
| return saveAs; |
| }( |
| typeof self !== "undefined" && self |
| || typeof window !== "undefined" && window |
| || this.content |
| )); |
| // `self` is undefined in Firefox for Android content script context |
| // while `this` is nsIContentFrameMessageManager |
| // with an attribute `content` that corresponds to the window |
| |
| if (typeof module !== "undefined" && module.exports) { |
| module.exports.saveAs = saveAs; |
| } else if ((typeof define !== "undefined" && define !== null) && (define.amd != null)) { |
| define([], function() { |
| return saveAs; |
| }); |
| } |