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Update FileSaver.js

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master
Daniel Berteaud 8 years ago
parent 46b97aac33
commit 7cb5957d71
1 changed files with 35 additions and 117 deletions
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  1. 146
      public/js/FileSaver.js

146
public/js/FileSaver.js
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@ -1,6 +1,7 @@
/* FileSaver.js /* FileSaver.js
* A saveAs() FileSaver implementation. * A saveAs() FileSaver implementation.
* 1.1.20151003 * 1.3.2
* 2016-06-16 18:25:19
* *
* By Eli Grey, http://eligrey.com * By Eli Grey, http://eligrey.com
* License: MIT * License: MIT
@ -15,7 +16,7 @@
var saveAs = saveAs || (function(view) { var saveAs = saveAs || (function(view) {
"use strict"; "use strict";
// IE <10 is explicitly unsupported // IE <10 is explicitly unsupported
if (typeof navigator !== "undefined" && /MSIE [1-9]\./.test(navigator.userAgent)) { if (typeof view === "undefined" || typeof navigator !== "undefined" && /MSIE [1-9]\./.test(navigator.userAgent)) {
return; return;
} }
var var
@ -30,20 +31,16 @@ var saveAs = saveAs || (function(view) {
var event = new MouseEvent("click"); var event = new MouseEvent("click");
node.dispatchEvent(event); node.dispatchEvent(event);
} }
, is_safari = /Version\/[\d\.]+.*Safari/.test(navigator.userAgent) , is_safari = /constructor/i.test(view.HTMLElement)
, webkit_req_fs = view.webkitRequestFileSystem , is_chrome_ios =/CriOS\/[\d]+/.test(navigator.userAgent)
, req_fs = view.requestFileSystem || webkit_req_fs || view.mozRequestFileSystem
, throw_outside = function(ex) { , throw_outside = function(ex) {
(view.setImmediate || view.setTimeout)(function() { (view.setImmediate || view.setTimeout)(function() {
throw ex; throw ex;
}, 0); }, 0);
} }
, force_saveable_type = "application/octet-stream" , force_saveable_type = "application/octet-stream"
, fs_min_size = 0 // the Blob API is fundamentally broken as there is no "downloadfinished" event to subscribe to
// See https://code.google.com/p/chromium/issues/detail?id=375297#c7 and , arbitrary_revoke_timeout = 1000 * 40 // in ms
// 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) { , revoke = function(file) {
var revoker = function() { var revoker = function() {
if (typeof file === "string") { // file is an object URL if (typeof file === "string") { // file is an object URL
@ -52,12 +49,8 @@ var saveAs = saveAs || (function(view) {
file.remove(); file.remove();
} }
}; };
if (view.chrome) {
revoker();
} else {
setTimeout(revoker, arbitrary_revoke_timeout); setTimeout(revoker, arbitrary_revoke_timeout);
} }
}
, dispatch = function(filesaver, event_types, event) { , dispatch = function(filesaver, event_types, event) {
event_types = [].concat(event_types); event_types = [].concat(event_types);
var i = event_types.length; var i = event_types.length;
@ -74,8 +67,9 @@ var saveAs = saveAs || (function(view) {
} }
, auto_bom = function(blob) { , auto_bom = function(blob) {
// prepend BOM for UTF-8 XML and text/* types (including HTML) // prepend BOM for UTF-8 XML and text/* types (including HTML)
// note: your browser will automatically convert UTF-16 U+FEFF to EF BB BF
if (/^\s*(?:text\/\S*|application\/xml|\S*\/\S*\+xml)\s*;.*charset\s*=\s*utf-8/i.test(blob.type)) { if (/^\s*(?:text\/\S*|application\/xml|\S*\/\S*\+xml)\s*;.*charset\s*=\s*utf-8/i.test(blob.type)) {
return new Blob(["\ufeff", blob], {type: blob.type}); return new Blob([String.fromCharCode(0xFEFF), blob], {type: blob.type});
} }
return blob; return blob;
} }
@ -87,20 +81,21 @@ var saveAs = saveAs || (function(view) {
var var
filesaver = this filesaver = this
, type = blob.type , type = blob.type
, blob_changed = false , force = type === force_saveable_type
, object_url , object_url
, target_view
, dispatch_all = function() { , dispatch_all = function() {
dispatch(filesaver, "writestart progress write writeend".split(" ")); dispatch(filesaver, "writestart progress write writeend".split(" "));
} }
// on any filesys errors revert to saving with object URLs // on any filesys errors revert to saving with object URLs
, fs_error = function() { , fs_error = function() {
if (target_view && is_safari && typeof FileReader !== "undefined") { if ((is_chrome_ios || (force && is_safari)) && view.FileReader) {
// Safari doesn't allow downloading of blob urls // Safari doesn't allow downloading of blob urls
var reader = new FileReader(); var reader = new FileReader();
reader.onloadend = function() { reader.onloadend = function() {
var base64Data = reader.result; var url = is_chrome_ios ? reader.result : reader.result.replace(/^data:[^;]*;/, 'data:attachment/file;');
target_view.location.href = "data:attachment/file" + base64Data.slice(base64Data.search(/[,;]/)); var popup = view.open(url, '_blank');
if(!popup) view.location.href = url;
url=undefined; // release reference before dispatching
filesaver.readyState = filesaver.DONE; filesaver.readyState = filesaver.DONE;
dispatch_all(); dispatch_all();
}; };
@ -109,41 +104,30 @@ var saveAs = saveAs || (function(view) {
return; return;
} }
// don't create more object URLs than needed // don't create more object URLs than needed
if (blob_changed || !object_url) { if (!object_url) {
object_url = get_URL().createObjectURL(blob); object_url = get_URL().createObjectURL(blob);
} }
if (target_view) { if (force) {
target_view.location.href = object_url; view.location.href = object_url;
} else { } else {
var new_tab = view.open(object_url, "_blank"); var opened = view.open(object_url, "_blank");
if (new_tab == undefined && is_safari) { if (!opened) {
//Apple do not allow window.open, see http://bit.ly/1kZffRI // Apple does not allow window.open, see https://developer.apple.com/library/safari/documentation/Tools/Conceptual/SafariExtensionGuide/WorkingwithWindowsandTabs/WorkingwithWindowsandTabs.html
view.location.href = object_url view.location.href = object_url;
} }
} }
filesaver.readyState = filesaver.DONE; filesaver.readyState = filesaver.DONE;
dispatch_all(); dispatch_all();
revoke(object_url); 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; filesaver.readyState = filesaver.INIT;
if (!name) {
name = "download";
}
if (can_use_save_link) { if (can_use_save_link) {
object_url = get_URL().createObjectURL(blob); object_url = get_URL().createObjectURL(blob);
setTimeout(function() {
save_link.href = object_url; save_link.href = object_url;
save_link.download = name; save_link.download = name;
setTimeout(function() {
click(save_link); click(save_link);
dispatch_all(); dispatch_all();
revoke(object_url); revoke(object_url);
@ -151,93 +135,27 @@ var saveAs = saveAs || (function(view) {
}); });
return; return;
} }
// 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_error);
}
, FS_proto = FileSaver.prototype , FS_proto = FileSaver.prototype
, saveAs = function(blob, name, no_auto_bom) { , saveAs = function(blob, name, no_auto_bom) {
return new FileSaver(blob, name, no_auto_bom); return new FileSaver(blob, name || blob.name || "download", no_auto_bom);
} }
; ;
// IE 10+ (native saveAs) // IE 10+ (native saveAs)
if (typeof navigator !== "undefined" && navigator.msSaveOrOpenBlob) { if (typeof navigator !== "undefined" && navigator.msSaveOrOpenBlob) {
return function(blob, name, no_auto_bom) { return function(blob, name, no_auto_bom) {
name = name || blob.name || "download";
if (!no_auto_bom) { if (!no_auto_bom) {
blob = auto_bom(blob); blob = auto_bom(blob);
} }
return navigator.msSaveOrOpenBlob(blob, name || "download"); return navigator.msSaveOrOpenBlob(blob, name);
}; };
} }
FS_proto.abort = function() { FS_proto.abort = function(){};
var filesaver = this;
filesaver.readyState = filesaver.DONE;
dispatch(filesaver, "abort");
};
FS_proto.readyState = FS_proto.INIT = 0; FS_proto.readyState = FS_proto.INIT = 0;
FS_proto.WRITING = 1; FS_proto.WRITING = 1;
FS_proto.DONE = 2; FS_proto.DONE = 2;
@ -263,8 +181,8 @@ var saveAs = saveAs || (function(view) {
if (typeof module !== "undefined" && module.exports) { if (typeof module !== "undefined" && module.exports) {
module.exports.saveAs = 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("FileSaver.js", function() {
return saveAs; return saveAs;
}); });
} }

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