Added <a>.download support and support for loading BlobBuilder.js asynchronously.
This commit is contained in:
Eli Grey
+52
-12
@@ -1,13 +1,13 @@
|
||||
/* FileSaver.js
|
||||
* A saveAs() FileSaver implementation.
|
||||
* 2011-08-01
|
||||
* 2011-08-02
|
||||
*
|
||||
* By Eli Grey, http://eligrey.com
|
||||
* License: X11/MIT
|
||||
* See LICENSE.md
|
||||
*/
|
||||
|
||||
/*global self, open, setTimeout */
|
||||
/*global self */
|
||||
/*jslint bitwise: true, regexp: true, confusion: true, es5: true, vars: true, white: true,
|
||||
plusplus: true */
|
||||
|
||||
@@ -16,11 +16,26 @@
|
||||
var saveAs = saveAs || (function(view) {
|
||||
"use strict";
|
||||
var
|
||||
URL = view.URL || view.webkitURL || view
|
||||
doc = view.document
|
||||
// only get URL when necessary in case BlobBuilder.js hasn't overridden it yet
|
||||
, get_URL = function() {
|
||||
return view.URL || view.webkitURL || view;
|
||||
}
|
||||
, URL = 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 = document.createEvent("MouseEvents");
|
||||
event.initMouseEvent(
|
||||
"click", true, false, view, 0, 0, 0, 0, 0
|
||||
, false, false, false, false, 0, null
|
||||
);
|
||||
return node.dispatchEvent(event); // false if event was cancelled
|
||||
}
|
||||
, webkit_req_fs = view.webkitRequestFileSystem
|
||||
, req_fs = view.requestFileSystem || webkit_req_fs || view.mozRequestFileSystem
|
||||
, throw_outside = function (ex) {
|
||||
(view.setImmediate || setTimeout)(function() {
|
||||
(view.setImmediate || view.setTimeout)(function() {
|
||||
throw ex;
|
||||
}, 0);
|
||||
}
|
||||
@@ -54,16 +69,29 @@ var saveAs = saveAs || (function(view) {
|
||||
}
|
||||
}
|
||||
, 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
|
||||
, get_object_url = function() {
|
||||
var object_url = get_URL().createObjectURL(blob);
|
||||
deletion_queue.push(object_url);
|
||||
return object_url;
|
||||
}
|
||||
, dispatch_all = function() {
|
||||
dispatch(filesaver, "writestart progress write writeend".split(" "));
|
||||
}
|
||||
// on any filesys errors revert to saving with object URLs
|
||||
, fs_error = function() {
|
||||
var object_url = URL.createObjectURL(blob);
|
||||
// don't create more object URLs than needed
|
||||
if (blob_changed || !object_url) {
|
||||
object_url = get_object_url(blob);
|
||||
}
|
||||
target_view.location.href = object_url;
|
||||
deletion_queue.push(object_url);
|
||||
filesaver.readyState = filesaver.DONE;
|
||||
dispatch(filesaver, "writestart progress write writeend".split(" "));
|
||||
dispatch_all();
|
||||
}
|
||||
, abortable = function(func) {
|
||||
return function() {
|
||||
@@ -72,6 +100,7 @@ var saveAs = saveAs || (function(view) {
|
||||
}
|
||||
};
|
||||
}
|
||||
, create_if_not_found = {create: true, exclusive: false}
|
||||
, target_view
|
||||
, slice
|
||||
;
|
||||
@@ -79,12 +108,23 @@ var saveAs = saveAs || (function(view) {
|
||||
if (!name) {
|
||||
name = "download";
|
||||
}
|
||||
if (can_use_save_link) {
|
||||
object_url = get_object_url(blob);
|
||||
save_link.href = object_url;
|
||||
save_link.download = name;
|
||||
if (click(save_link)) {
|
||||
filesaver.readyState = filesaver.DONE;
|
||||
dispatch_all();
|
||||
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
|
||||
if (view.chrome && type !== force_saveable_type) {
|
||||
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.
|
||||
@@ -93,9 +133,9 @@ var saveAs = saveAs || (function(view) {
|
||||
name += ".download";
|
||||
}
|
||||
if (type === force_saveable_type || webkit_req_fs) {
|
||||
target_view = self;
|
||||
target_view = view;
|
||||
} else {
|
||||
target_view = open();
|
||||
target_view = view.open();
|
||||
}
|
||||
if (!req_fs) {
|
||||
fs_error();
|
||||
@@ -103,9 +143,9 @@ var saveAs = saveAs || (function(view) {
|
||||
}
|
||||
fs_min_size += blob.size;
|
||||
req_fs(view.TEMPORARY, fs_min_size, abortable(function(fs) {
|
||||
fs.root.getDirectory("saved", {create:true, exclusive: false}, abortable(function(dir) {
|
||||
fs.root.getDirectory("saved", create_if_not_found, abortable(function(dir) {
|
||||
var save = function() {
|
||||
dir.getFile(name, {create:true, exclusive: false}, abortable(function(file) {
|
||||
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();
|
||||
|
||||
Vendored
+1
-1
@@ -1,2 +1,2 @@
|
||||
/*! @source http://purl.eligrey.com/github/FileSaver.js/blob/master/FileSaver.js */
|
||||
var saveAs=saveAs||(function(l){"use strict";var k=l.URL||l.webkitURL||l,f=l.webkitRequestFileSystem,m=l.requestFileSystem||f||l.mozRequestFileSystem,c=function(n){(l.setImmediate||setTimeout)(function(){throw n},0)},j="application/octet-stream",h=0,g=[],e=function(){var o=g.length;while(o--){var n=g[o];if(typeof n==="string"){k.revokeObjectURL(n)}else{n.remove()}}g.length=0},i=function(o,n,r){n=[].concat(n);var q=n.length;while(q--){var s=o["on"+n[q]];if(typeof s==="function"){try{s.call(o,r||o)}catch(p){c(p)}}}},b=function(o,q){var n=this,r=o.type,u=function(){var v=k.createObjectURL(o);p.location.href=v;g.push(v);n.readyState=n.DONE;i(n,"writestart progress write writeend".split(" "))},s=function(v){return function(){if(n.readyState!==n.DONE){return v.apply(this,arguments)}}},p,t;n.readyState=n.INIT;if(!q){q="download"}if(l.chrome&&r!==j){t=o.slice||o.webkitSlice;o=t.call(o,0,o.size,j)}if(f&&q!=="download"){q+=".download"}if(r===j||f){p=self}else{p=open()}if(!m){u();return}h+=o.size;m(l.TEMPORARY,h,s(function(v){v.root.getDirectory("saved",{create:true,exclusive:false},s(function(w){var x=function(){w.getFile(q,{create:true,exclusive:false},s(function(y){y.createWriter(s(function(z){z.onwriteend=function(A){p.location.href=y.toURL();g.push(y);n.readyState=n.DONE;i(n,"writeend",A)};z.onerror=function(){var A=z.error;if(A.code!==A.ABORT_ERR){u()}};"writestart progress write abort".split(" ").forEach(function(A){z["on"+A]=n["on"+A]});z.write(o);n.abort=function(){z.abort();n.readyState=n.DONE};n.readyState=n.WRITING}),u)}),u)};w.getFile(q,{create:false},s(function(y){y.remove();x()}),s(function(y){if(y.code===y.NOT_FOUND_ERR){x()}else{u()}}))}),u)}),u)},a=b.prototype,d=function(n,o){return new b(n,o)};a.abort=function(){var n=this;n.readyState=n.DONE;i(n,"abort")};a.readyState=a.INIT=0;a.WRITING=1;a.DONE=2;a.error=a.onwritestart=a.onprogress=a.onwrite=a.onabort=a.onerror=a.onwriteend=null;l.addEventListener("unload",e,false);return d}(self));
|
||||
var saveAs=saveAs||(function(h){"use strict";var r=h.document,l=function(){return h.URL||h.webkitURL||h},e=h.URL||h.webkitURL||h,n=r.createElementNS("http://www.w3.org/1999/xhtml","a"),g="download" in n,j=function(t){var s=document.createEvent("MouseEvents");s.initMouseEvent("click",true,false,h,0,0,0,0,0,false,false,false,false,0,null);return t.dispatchEvent(s)},o=h.webkitRequestFileSystem,p=h.requestFileSystem||o||h.mozRequestFileSystem,m=function(s){(h.setImmediate||h.setTimeout)(function(){throw s},0)},c="application/octet-stream",k=0,b=[],i=function(){var t=b.length;while(t--){var s=b[t];if(typeof s==="string"){e.revokeObjectURL(s)}else{s.remove()}}b.length=0},q=function(t,s,w){s=[].concat(s);var v=s.length;while(v--){var x=t["on"+s[v]];if(typeof x==="function"){try{x.call(t,w||t)}catch(u){m(u)}}}},f=function(t,u){var v=this,B=t.type,E=false,x,s=function(){var F=l().createObjectURL(t);b.push(F);return F},A=function(){q(v,"writestart progress write writeend".split(" "))},D=function(){if(E||!x){x=s(t)}w.location.href=x;v.readyState=v.DONE;A()},z=function(F){return function(){if(v.readyState!==v.DONE){return F.apply(this,arguments)}}},y={create:true,exclusive:false},w,C;v.readyState=v.INIT;if(!u){u="download"}if(g){x=s(t);n.href=x;n.download=u;if(j(n)){v.readyState=v.DONE;A();return}}if(h.chrome&&B&&B!==c){C=t.slice||t.webkitSlice;t=C.call(t,0,t.size,c);E=true}if(o&&u!=="download"){u+=".download"}if(B===c||o){w=h}else{w=h.open()}if(!p){D();return}k+=t.size;p(h.TEMPORARY,k,z(function(F){F.root.getDirectory("saved",y,z(function(G){var H=function(){G.getFile(u,y,z(function(I){I.createWriter(z(function(J){J.onwriteend=function(K){w.location.href=I.toURL();b.push(I);v.readyState=v.DONE;q(v,"writeend",K)};J.onerror=function(){var K=J.error;if(K.code!==K.ABORT_ERR){D()}};"writestart progress write abort".split(" ").forEach(function(K){J["on"+K]=v["on"+K]});J.write(t);v.abort=function(){J.abort();v.readyState=v.DONE};v.readyState=v.WRITING}),D)}),D)};G.getFile(u,{create:false},z(function(I){I.remove();H()}),z(function(I){if(I.code===I.NOT_FOUND_ERR){H()}else{D()}}))}),D)}),D)},d=f.prototype,a=function(s,t){return new f(s,t)};d.abort=function(){var s=this;s.readyState=s.DONE;q(s,"abort")};d.readyState=d.INIT=0;d.WRITING=1;d.DONE=2;d.error=d.onwritestart=d.onprogress=d.onwrite=d.onabort=d.onerror=d.onwriteend=null;h.addEventListener("unload",i,false);return a}(self));
|
||||
Reference in New Issue
Block a user