Update FileSaver.js

master
Daniel Berteaud 10 years ago
parent 1e7a1d8e24
commit ad7b2cbc25
  1. 63
      public/js/FileSaver.js

@ -1,10 +1,10 @@
/* FileSaver.js /* FileSaver.js
* A saveAs() FileSaver implementation. * A saveAs() FileSaver implementation.
* 2014-05-27 * 2015-03-04
* *
* By Eli Grey, http://eligrey.com * By Eli Grey, http://eligrey.com
* License: X11/MIT * License: X11/MIT
* See https://github.com/eligrey/FileSaver.js/blob/master/LICENSE.md * See https://github.com/eligrey/FileSaver.js/blob/master/LICENSE.md
*/ */
/*global self */ /*global self */
@ -31,7 +31,7 @@ var saveAs = saveAs
return view.URL || view.webkitURL || view; return view.URL || view.webkitURL || view;
} }
, save_link = doc.createElementNS("http://www.w3.org/1999/xhtml", "a") , save_link = doc.createElementNS("http://www.w3.org/1999/xhtml", "a")
, can_use_save_link = !view.externalHost && "download" in save_link , can_use_save_link = "download" in save_link
, click = function(node) { , click = function(node) {
var event = doc.createEvent("MouseEvents"); var event = doc.createEvent("MouseEvents");
event.initMouseEvent( event.initMouseEvent(
@ -49,18 +49,23 @@ var saveAs = saveAs
} }
, force_saveable_type = "application/octet-stream" , force_saveable_type = "application/octet-stream"
, fs_min_size = 0 , fs_min_size = 0
, deletion_queue = [] // See https://code.google.com/p/chromium/issues/detail?id=375297#c7 and
, process_deletion_queue = function() { // https://github.com/eligrey/FileSaver.js/commit/485930a#commitcomment-8768047
var i = deletion_queue.length; // for the reasoning behind the timeout and revocation flow
while (i--) { , arbitrary_revoke_timeout = 500 // in ms
var file = deletion_queue[i]; , revoke = function(file) {
var revoker = function() {
if (typeof file === "string") { // file is an object URL if (typeof file === "string") { // file is an object URL
get_URL().revokeObjectURL(file); get_URL().revokeObjectURL(file);
} else { // file is a File } else { // file is a File
file.remove(); file.remove();
} }
};
if (view.chrome) {
revoker();
} else {
setTimeout(revoker, arbitrary_revoke_timeout);
} }
deletion_queue.length = 0; // clear queue
} }
, dispatch = function(filesaver, event_types, event) { , dispatch = function(filesaver, event_types, event) {
event_types = [].concat(event_types); event_types = [].concat(event_types);
@ -84,11 +89,6 @@ var saveAs = saveAs
, blob_changed = false , blob_changed = false
, object_url , object_url
, target_view , target_view
, get_object_url = function() {
var object_url = get_URL().createObjectURL(blob);
deletion_queue.push(object_url);
return object_url;
}
, dispatch_all = function() { , dispatch_all = function() {
dispatch(filesaver, "writestart progress write writeend".split(" ")); dispatch(filesaver, "writestart progress write writeend".split(" "));
} }
@ -96,15 +96,20 @@ var saveAs = saveAs
, fs_error = function() { , fs_error = function() {
// don't create more object URLs than needed // don't create more object URLs than needed
if (blob_changed || !object_url) { if (blob_changed || !object_url) {
object_url = get_object_url(blob); object_url = get_URL().createObjectURL(blob);
} }
if (target_view) { if (target_view) {
target_view.location.href = object_url; target_view.location.href = object_url;
} else { } else {
window.open(object_url, "_blank"); 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; filesaver.readyState = filesaver.DONE;
dispatch_all(); dispatch_all();
revoke(object_url);
} }
, abortable = function(func) { , abortable = function(func) {
return function() { return function() {
@ -121,17 +126,24 @@ var saveAs = saveAs
name = "download"; name = "download";
} }
if (can_use_save_link) { if (can_use_save_link) {
object_url = get_object_url(blob); object_url = get_URL().createObjectURL(blob);
save_link.href = object_url; save_link.href = object_url;
save_link.download = name; save_link.download = name;
click(save_link); click(save_link);
filesaver.readyState = filesaver.DONE; filesaver.readyState = filesaver.DONE;
dispatch_all(); dispatch_all();
revoke(object_url);
return; 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 // 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 // viewed in a tab, so I force save with application/octet-stream
// http://code.google.com/p/chromium/issues/detail?id=91158 // 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) { if (view.chrome && type && type !== force_saveable_type) {
slice = blob.slice || blob.webkitSlice; slice = blob.slice || blob.webkitSlice;
blob = slice.call(blob, 0, blob.size, force_saveable_type); blob = slice.call(blob, 0, blob.size, force_saveable_type);
@ -158,9 +170,9 @@ var saveAs = saveAs
file.createWriter(abortable(function(writer) { file.createWriter(abortable(function(writer) {
writer.onwriteend = function(event) { writer.onwriteend = function(event) {
target_view.location.href = file.toURL(); target_view.location.href = file.toURL();
deletion_queue.push(file);
filesaver.readyState = filesaver.DONE; filesaver.readyState = filesaver.DONE;
dispatch(filesaver, "writeend", event); dispatch(filesaver, "writeend", event);
revoke(file);
}; };
writer.onerror = function() { writer.onerror = function() {
var error = writer.error; var error = writer.error;
@ -217,11 +229,6 @@ var saveAs = saveAs
FS_proto.onwriteend = FS_proto.onwriteend =
null; null;
view.addEventListener("unload", process_deletion_queue, false);
saveAs.unload = function() {
process_deletion_queue();
view.removeEventListener("unload", process_deletion_queue, false);
};
return saveAs; return saveAs;
}( }(
typeof self !== "undefined" && self typeof self !== "undefined" && self
@ -232,8 +239,8 @@ var saveAs = saveAs
// while `this` is nsIContentFrameMessageManager // while `this` is nsIContentFrameMessageManager
// with an attribute `content` that corresponds to the window // with an attribute `content` that corresponds to the window
if (typeof module !== "undefined" && module !== null) { if (typeof module !== "undefined" && module.exports) {
module.exports = saveAs; module.exports.saveAs = saveAs;
} else if ((typeof define !== "undefined" && define !== null) && (define.amd != null)) { } else if ((typeof define !== "undefined" && define !== null) && (define.amd != null)) {
define([], function() { define([], function() {
return saveAs; return saveAs;

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