1+ /* FileSaver.js
2+ * A saveAs() FileSaver implementation.
3+ * 1.3.2
4+ * 2016-06-16 18:25:19
5+ *
6+ * By Eli Grey, http://eligrey.com
7+ * License: MIT
8+ * See https://github.com/eligrey/FileSaver.js/blob/master/LICENSE.md
9+ */
10+
11+ /*global self */
12+ /*jslint bitwise: true, indent: 4, laxbreak: true, laxcomma: true, smarttabs: true, plusplus: true */
13+
14+ /*! @source http://purl.eligrey.com/github/FileSaver.js/blob/master/FileSaver.js */
15+
16+ var saveAs = saveAs || ( function ( view ) {
17+ "use strict" ;
18+ // IE <10 is explicitly unsupported
19+ if ( typeof view === "undefined" || typeof navigator !== "undefined" && / M S I E [ 1 - 9 ] \. / . test ( navigator . userAgent ) ) {
20+ return ;
21+ }
22+ var
23+ doc = view . document
24+ // only get URL when necessary in case Blob.js hasn't overridden it yet
25+ , get_URL = function ( ) {
26+ return view . URL || view . webkitURL || view ;
27+ }
28+ , save_link = doc . createElementNS ( "http://www.w3.org/1999/xhtml" , "a" )
29+ , can_use_save_link = "download" in save_link
30+ , click = function ( node ) {
31+ var event = new MouseEvent ( "click" ) ;
32+ node . dispatchEvent ( event ) ;
33+ }
34+ , is_safari = / c o n s t r u c t o r / i. test ( view . HTMLElement ) || view . safari
35+ , is_chrome_ios = / C r i O S \/ [ \d ] + / . test ( navigator . userAgent )
36+ , throw_outside = function ( ex ) {
37+ ( view . setImmediate || view . setTimeout ) ( function ( ) {
38+ throw ex ;
39+ } , 0 ) ;
40+ }
41+ , force_saveable_type = "application/octet-stream"
42+ // the Blob API is fundamentally broken as there is no "downloadfinished" event to subscribe to
43+ , arbitrary_revoke_timeout = 1000 * 40 // in ms
44+ , revoke = function ( file ) {
45+ var revoker = function ( ) {
46+ if ( typeof file === "string" ) { // file is an object URL
47+ get_URL ( ) . revokeObjectURL ( file ) ;
48+ } else { // file is a File
49+ file . remove ( ) ;
50+ }
51+ } ;
52+ setTimeout ( revoker , arbitrary_revoke_timeout ) ;
53+ }
54+ , dispatch = function ( filesaver , event_types , event ) {
55+ event_types = [ ] . concat ( event_types ) ;
56+ var i = event_types . length ;
57+ while ( i -- ) {
58+ var listener = filesaver [ "on" + event_types [ i ] ] ;
59+ if ( typeof listener === "function" ) {
60+ try {
61+ listener . call ( filesaver , event || filesaver ) ;
62+ } catch ( ex ) {
63+ throw_outside ( ex ) ;
64+ }
65+ }
66+ }
67+ }
68+ , auto_bom = function ( blob ) {
69+ // prepend BOM for UTF-8 XML and text/* types (including HTML)
70+ // note: your browser will automatically convert UTF-16 U+FEFF to EF BB BF
71+ if ( / ^ \s * (?: t e x t \/ \S * | a p p l i c a t i o n \/ x m l | \S * \/ \S * \+ x m l ) \s * ; .* c h a r s e t \s * = \s * u t f - 8 / i. test ( blob . type ) ) {
72+ return new Blob ( [ String . fromCharCode ( 0xFEFF ) , blob ] , { type : blob . type } ) ;
73+ }
74+ return blob ;
75+ }
76+ , FileSaver = function ( blob , name , no_auto_bom ) {
77+ if ( ! no_auto_bom ) {
78+ blob = auto_bom ( blob ) ;
79+ }
80+ // First try a.download, then web filesystem, then object URLs
81+ var
82+ filesaver = this
83+ , type = blob . type
84+ , force = type === force_saveable_type
85+ , object_url
86+ , dispatch_all = function ( ) {
87+ dispatch ( filesaver , "writestart progress write writeend" . split ( " " ) ) ;
88+ }
89+ // on any filesys errors revert to saving with object URLs
90+ , fs_error = function ( ) {
91+ if ( ( is_chrome_ios || ( force && is_safari ) ) && view . FileReader ) {
92+ // Safari doesn't allow downloading of blob urls
93+ var reader = new FileReader ( ) ;
94+ reader . onloadend = function ( ) {
95+ var url = is_chrome_ios ? reader . result : reader . result . replace ( / ^ d a t a : [ ^ ; ] * ; / , 'data:attachment/file;' ) ;
96+ var popup = view . open ( url , '_blank' ) ;
97+ if ( ! popup ) view . location . href = url ;
98+ url = undefined ; // release reference before dispatching
99+ filesaver . readyState = filesaver . DONE ;
100+ dispatch_all ( ) ;
101+ } ;
102+ reader . readAsDataURL ( blob ) ;
103+ filesaver . readyState = filesaver . INIT ;
104+ return ;
105+ }
106+ // don't create more object URLs than needed
107+ if ( ! object_url ) {
108+ object_url = get_URL ( ) . createObjectURL ( blob ) ;
109+ }
110+ if ( force ) {
111+ view . location . href = object_url ;
112+ } else {
113+ var opened = view . open ( object_url , "_blank" ) ;
114+ if ( ! opened ) {
115+ // Apple does not allow window.open, see https://developer.apple.com/library/safari/documentation/Tools/Conceptual/SafariExtensionGuide/WorkingwithWindowsandTabs/WorkingwithWindowsandTabs.html
116+ view . location . href = object_url ;
117+ }
118+ }
119+ filesaver . readyState = filesaver . DONE ;
120+ dispatch_all ( ) ;
121+ revoke ( object_url ) ;
122+ }
123+ ;
124+ filesaver . readyState = filesaver . INIT ;
125+
126+ if ( can_use_save_link ) {
127+ object_url = get_URL ( ) . createObjectURL ( blob ) ;
128+ setTimeout ( function ( ) {
129+ save_link . href = object_url ;
130+ save_link . download = name ;
131+ click ( save_link ) ;
132+ dispatch_all ( ) ;
133+ revoke ( object_url ) ;
134+ filesaver . readyState = filesaver . DONE ;
135+ } ) ;
136+ return ;
137+ }
138+
139+ fs_error ( ) ;
140+ }
141+ , FS_proto = FileSaver . prototype
142+ , saveAs = function ( blob , name , no_auto_bom ) {
143+ if ( no_auto_bom === undefined ) no_auto_bom = true ;
144+ return new FileSaver ( blob , name || blob . name || "download" , no_auto_bom ) ;
145+ }
146+ ;
147+ // IE 10+ (native saveAs)
148+ if ( typeof navigator !== "undefined" && navigator . msSaveOrOpenBlob ) {
149+ return function ( blob , name , no_auto_bom ) {
150+ name = name || blob . name || "download" ;
151+
152+ if ( ! no_auto_bom ) {
153+ blob = auto_bom ( blob ) ;
154+ }
155+ return navigator . msSaveOrOpenBlob ( blob , name ) ;
156+ } ;
157+ }
158+
159+ FS_proto . abort = function ( ) { } ;
160+ FS_proto . readyState = FS_proto . INIT = 0 ;
161+ FS_proto . WRITING = 1 ;
162+ FS_proto . DONE = 2 ;
163+
164+ FS_proto . error =
165+ FS_proto . onwritestart =
166+ FS_proto . onprogress =
167+ FS_proto . onwrite =
168+ FS_proto . onabort =
169+ FS_proto . onerror =
170+ FS_proto . onwriteend =
171+ null ;
172+
173+ return saveAs ;
174+ } (
175+ typeof self !== "undefined" && self
176+ || typeof window !== "undefined" && window
177+ || this . content
178+ ) ) ;
179+ // `self` is undefined in Firefox for Android content script context
180+ // while `this` is nsIContentFrameMessageManager
181+ // with an attribute `content` that corresponds to the window
182+
183+ if ( typeof module !== "undefined" && module . exports ) {
184+ module . exports . saveAs = saveAs ;
185+ } else if ( ( typeof define !== "undefined" && define !== null ) && ( define . amd !== null ) ) {
186+ define ( "FileSaver.js" , function ( ) {
187+ return saveAs ;
188+ } ) ;
189+ }
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