new version
This commit is contained in:
Jimmy Wärting
+141
-171
@@ -1,182 +1,152 @@
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/* FileSaver.js
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* A saveAs() FileSaver implementation.
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* 1.3.8
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* 2018-03-22 14:03:47
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*
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* By Eli Grey, https://eligrey.com
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* License: MIT
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* See https://github.com/eligrey/FileSaver.js/blob/master/LICENSE.md
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*/
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/*
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* FileSaver.js
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* A saveAs() FileSaver implementation.
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*
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* By Eli Grey, http://eligrey.com
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*
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* License : https://github.com/eligrey/FileSaver.js/blob/master/LICENSE.md (MIT)
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* source : http://purl.eligrey.com/github/FileSaver.js
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*/
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/*global self */
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/*jslint bitwise: true, indent: 4, laxbreak: true, laxcomma: true, smarttabs: true, plusplus: true */
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/*! @source http://purl.eligrey.com/github/FileSaver.js/blob/master/src/FileSaver.js */
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// The one and only way of getting global scope in all enviorment
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// https://stackoverflow.com/q/3277182/1008999
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var _global = (function () {
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// some use content security policy to disable eval
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try {
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return Function('return this')() || (42, eval)('this')
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} catch (e) {
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// every global should have circular reference
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// used for checking if someone writes var window = {}; var self = {}
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return typeof window === 'object' && window.window === window ? window
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: typeof self === 'object' && self.self === self ? self
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: typeof global === 'object' && global.global === global ? global : this
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}
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})()
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export var saveAs = saveAs || (function(view) {
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"use strict";
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// IE <10 is explicitly unsupported
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if (typeof view === "undefined" || typeof navigator !== "undefined" && /MSIE [1-9]\./.test(navigator.userAgent)) {
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return;
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}
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var
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doc = view.document
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// only get URL when necessary in case Blob.js hasn't overridden it yet
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, get_URL = function() {
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return view.URL || view.webkitURL || view;
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}
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, save_link = doc.createElementNS("http://www.w3.org/1999/xhtml", "a")
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, can_use_save_link = "download" in save_link
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, click = function(node) {
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var event = new MouseEvent("click");
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node.dispatchEvent(event);
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}
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, is_safari = /constructor/i.test(view.HTMLElement) || view.safari
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, is_chrome_ios =/CriOS\/[\d]+/.test(navigator.userAgent)
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, setImmediate = view.setImmediate || view.setTimeout
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, throw_outside = function(ex) {
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setImmediate(function() {
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throw ex;
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}, 0);
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}
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, force_saveable_type = "application/octet-stream"
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// the Blob API is fundamentally broken as there is no "downloadfinished" event to subscribe to
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, arbitrary_revoke_timeout = 1000 * 40 // in ms
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, revoke = function(file) {
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var revoker = function() {
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if (typeof file === "string") { // file is an object URL
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get_URL().revokeObjectURL(file);
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} else { // file is a File
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file.remove();
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}
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};
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setTimeout(revoker, arbitrary_revoke_timeout);
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}
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, dispatch = function(filesaver, event_types, event) {
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event_types = [].concat(event_types);
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var i = event_types.length;
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while (i--) {
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var listener = filesaver["on" + event_types[i]];
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if (typeof listener === "function") {
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try {
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listener.call(filesaver, event || filesaver);
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} catch (ex) {
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throw_outside(ex);
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}
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}
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}
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}
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, auto_bom = function(blob) {
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// prepend BOM for UTF-8 XML and text/* types (including HTML)
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// note: your browser will automatically convert UTF-16 U+FEFF to EF BB BF
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if (/^\s*(?:text\/\S*|application\/xml|\S*\/\S*\+xml)\s*;.*charset\s*=\s*utf-8/i.test(blob.type)) {
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return new Blob([String.fromCharCode(0xFEFF), blob], {type: blob.type});
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}
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return blob;
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}
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, FileSaver = function(blob, name, no_auto_bom) {
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if (!no_auto_bom) {
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blob = auto_bom(blob);
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}
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// First try a.download, then web filesystem, then object URLs
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var
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filesaver = this
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, type = blob.type
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, force = type === force_saveable_type
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, object_url
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, dispatch_all = function() {
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dispatch(filesaver, "writestart progress write writeend".split(" "));
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}
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// on any filesys errors revert to saving with object URLs
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, fs_error = function() {
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if ((is_chrome_ios || (force && is_safari)) && view.FileReader) {
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// Safari doesn't allow downloading of blob urls
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var reader = new FileReader();
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reader.onloadend = function() {
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var url = is_chrome_ios ? reader.result : reader.result.replace(/^data:[^;]*;/, 'data:attachment/file;');
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var popup = view.open(url, '_blank');
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if(!popup) view.location.href = url;
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url=undefined; // release reference before dispatching
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filesaver.readyState = filesaver.DONE;
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dispatch_all();
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};
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reader.readAsDataURL(blob);
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filesaver.readyState = filesaver.INIT;
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return;
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}
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// don't create more object URLs than needed
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if (!object_url) {
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object_url = get_URL().createObjectURL(blob);
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}
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if (force) {
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view.location.href = object_url;
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} else {
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var opened = view.open(object_url, "_blank");
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if (!opened) {
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// Apple does not allow window.open, see https://developer.apple.com/library/safari/documentation/Tools/Conceptual/SafariExtensionGuide/WorkingwithWindowsandTabs/WorkingwithWindowsandTabs.html
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view.location.href = object_url;
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}
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}
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filesaver.readyState = filesaver.DONE;
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dispatch_all();
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revoke(object_url);
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}
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;
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filesaver.readyState = filesaver.INIT;
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function bom (blob, autoBom) {
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if (!autoBom) return blob
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// prepend BOM for UTF-8 XML and text/* types (including HTML)
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// note: your browser will automatically convert UTF-16 U+FEFF to EF BB BF
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if (/^\s*(?:text\/\S*|application\/xml|\S*\/\S*\+xml)\s*;.*charset\s*=\s*utf-8/i.test(blob.type)) {
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return new Blob([String.fromCharCode(0xFEFF), blob], { type: blob.type })
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}
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return blob
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}
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if (can_use_save_link) {
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object_url = get_URL().createObjectURL(blob);
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setImmediate(function() {
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save_link.href = object_url;
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save_link.download = name;
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click(save_link);
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dispatch_all();
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revoke(object_url);
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filesaver.readyState = filesaver.DONE;
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}, 0);
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return;
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}
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function download (url, name, autoBom) {
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var xhr = new XMLHttpRequest()
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xhr.open('GET', url)
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xhr.responseType = 'blob'
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xhr.onload = function () {
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saveAs(xhr.response, name, autoBom)
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}
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xhr.onerror = function () {
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console.error('could not download file')
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}
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xhr.send()
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}
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fs_error();
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}
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, FS_proto = FileSaver.prototype
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, saveAs = function(blob, name, no_auto_bom) {
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return new FileSaver(blob, name || blob.name || "download", no_auto_bom);
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}
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;
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function corsEnabled (url) {
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var xhr = new XMLHttpRequest()
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// use sync to avoid popup blocker
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xhr.open('HEAD', url, false)
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xhr.send()
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return xhr.status >= 200 && xhr.status <= 299
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}
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// IE 10+ (native saveAs)
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if (typeof navigator !== "undefined" && navigator.msSaveOrOpenBlob) {
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return function(blob, name, no_auto_bom) {
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name = name || blob.name || "download";
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var saveAs = _global.saveAs ||
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// probably in some web worker
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(typeof window !== 'undefined' && window !== _global)
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? function saveAs () { /* noop */ }
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if (!no_auto_bom) {
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blob = auto_bom(blob);
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}
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return navigator.msSaveOrOpenBlob(blob, name);
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};
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}
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// Use download attribute first if possible (#193 Lumia mobile)
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: 'download' in HTMLAnchorElement.prototype
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? function saveAs (blob, name, autoBom) {
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var URL = _global.URL || _global.webkitURL
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var a = document.createElement('a')
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name = name || blob.name || 'download'
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// todo: detect chrome extensions & packaged apps
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//save_link.target = "_blank";
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a.download = name
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a.rel = 'noopener' // tabnabbing
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FS_proto.abort = function(){};
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FS_proto.readyState = FS_proto.INIT = 0;
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FS_proto.WRITING = 1;
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FS_proto.DONE = 2;
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// TODO: detect chrome extensions & packaged apps
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// a.target = '_blank'
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FS_proto.error =
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FS_proto.onwritestart =
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FS_proto.onprogress =
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FS_proto.onwrite =
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FS_proto.onabort =
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FS_proto.onerror =
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FS_proto.onwriteend =
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null;
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if (typeof blob === 'string') {
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// Support regular links
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a.href = blob
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if (a.origin !== location.origin) {
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corsEnabled(a.href)
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? download(blob, name, autoBom)
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: a.click(a.target = '_blank')
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} else {
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a.click()
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}
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} else {
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// Support blobs
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a.href = URL.createObjectURL(blob)
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setTimeout(function () { URL.revokeObjectURL(a.href) }, 4E4) // 40s
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setTimeout(a.click.bind(a), 0)
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}
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}
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return saveAs;
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}(
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typeof self !== "undefined" && self
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|| typeof window !== "undefined" && window
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|| this
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));
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// Use msSaveOrOpenBlob as a second approch
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: 'msSaveOrOpenBlob' in navigator
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? function saveAs (blob, name, autoBom) {
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name = name || blob.name || 'download'
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if (typeof blob === 'string') {
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if (corsEnabled(blob)) {
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download(blob, name, autoBom)
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} else {
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var a = document.createElement('a')
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a.href = blob
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a.target = '_blank'
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setTimeout(a.click.bind(a))
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}
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} else {
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navigator.msSaveOrOpenBlob(bom(blob, autoBom), name)
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}
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}
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// Fallback to using FileReader and a popup
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: function saveAs (blob, name, autoBom, popup) {
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// Open a popup immediately do go around popup blocker
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// Mostly only avalible on user interaction and the fileReader is async so...
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popup = popup || open('', '_blank')
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if (popup) {
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popup.document.title =
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popup.document.body.innerText = 'downloading...'
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}
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if (typeof blob === 'string') return download(blob, name, autoBom)
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var force = blob.type === 'application/octet-stream'
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var isSafari = /constructor/i.test(_global.HTMLElement) || _global.safari
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var isChromeIOS = /CriOS\/[\d]+/.test(navigator.userAgent)
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if ((isChromeIOS || (force && isSafari)) && typeof FileReader === 'object') {
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// Safari doesn't allow downloading of blob urls
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var reader = new FileReader()
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reader.onloadend = function () {
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var url = reader.result
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url = isChromeIOS ? url : url.replace(/^data:[^;]*;/, 'data:attachment/file;')
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if (popup) popup.location.href = url
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else location = url
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popup = null // reverse-tabnabbing #460
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}
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reader.readAsDataURL(blob)
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} else {
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var URL = _global.URL || _global.webkitURL
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var url = URL.createObjectURL(blob)
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if (popup) popup.location = url
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else location.href = url
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popup = null // reverse-tabnabbing #460
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setTimeout(function () { URL.revokeObjectURL(url) }, 4E4) // 40s
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}
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}
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_global.saveAs = saveAs
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export default saveAs
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Reference in New Issue
Block a user