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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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+/*global self */
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+/*jslint bitwise: true, indent: 4, laxbreak: true, laxcomma: true, smarttabs: true, plusplus: true */
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+
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+/*! @source http://purl.eligrey.com/github/FileSaver.js/blob/master/src/FileSaver.js */
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+
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+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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+
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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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+
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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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+
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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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+
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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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+
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+ // todo: detect chrome extensions & packaged apps
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+ //save_link.target = "_blank";
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+
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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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+
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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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+
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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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