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- (function (root, factory) {
- if (typeof define === 'function' && define.amd) {
- // AMD. Register as an anonymous module.
- define([], factory);
- } else if (typeof exports === 'object') {
- // Node. Does not work with strict CommonJS, but
- // only CommonJS-like environments that support module.exports,
- // like Node.
- module.exports = factory();
- } else {
- // Browser globals (root is window)
- root.download = factory();
- }
- }(this, function () {
- return function download(data, strFileName, strMimeType) {
- var self = window, // this script is only for browsers anyway...
- defaultMime = "application/octet-stream", // this default mime also triggers iframe downloads
- mimeType = strMimeType || defaultMime,
- payload = data,
- url = !strFileName && !strMimeType && payload,
- anchor = document.createElement("a"),
- toString = function(a){return String(a);},
- myBlob = (self.Blob || self.MozBlob || self.WebKitBlob || toString),
- fileName = strFileName || "download",
- blob,
- reader;
- myBlob= myBlob.call ? myBlob.bind(self) : Blob ;
-
- if(String(this)==="true"){ //reverse arguments, allowing download.bind(true, "text/xml", "export.xml") to act as a callback
- payload=[payload, mimeType];
- mimeType=payload[0];
- payload=payload[1];
- }
- if(url && url.length< 2048){ // if no filename and no mime, assume a url was passed as the only argument
- fileName = url.split("/").pop().split("?")[0];
- anchor.href = url; // assign href prop to temp anchor
- if(anchor.href.indexOf(url) !== -1){ // if the browser determines that it's a potentially valid url path:
- var ajax=new XMLHttpRequest();
- ajax.open( "GET", url, true);
- ajax.responseType = 'blob';
- ajax.onload= function(e){
- download(e.target.response, fileName, defaultMime);
- };
- setTimeout(function(){ ajax.send();}, 0); // allows setting custom ajax headers using the return:
- return ajax;
- } // end if valid url?
- } // end if url?
- //go ahead and download dataURLs right away
- if(/^data\:[\w+\-]+\/[\w+\-]+[,;]/.test(payload)){
-
- if(payload.length > (1024*1024*1.999) && myBlob !== toString ){
- payload=dataUrlToBlob(payload);
- mimeType=payload.type || defaultMime;
- }else{
- return navigator.msSaveBlob ? // IE10 can't do a[download], only Blobs:
- navigator.msSaveBlob(dataUrlToBlob(payload), fileName) :
- saver(payload) ; // everyone else can save dataURLs un-processed
- }
-
- }//end if dataURL passed?
- blob = payload instanceof myBlob ?
- payload :
- new myBlob([payload], {type: mimeType}) ;
- function dataUrlToBlob(strUrl) {
- var parts= strUrl.split(/[:;,]/),
- type= parts[1],
- decoder= parts[2] == "base64" ? atob : decodeURIComponent,
- binData= decoder( parts.pop() ),
- mx= binData.length,
- i= 0,
- uiArr= new Uint8Array(mx);
- for(i;i<mx;++i) uiArr[i]= binData.charCodeAt(i);
- return new myBlob([uiArr], {type: type});
- }
- function saver(url, winMode){
- if ('download' in anchor) { //html5 A[download]
- anchor.href = url;
- anchor.setAttribute("download", fileName);
- anchor.className = "download-js-link";
- anchor.innerHTML = "downloading...";
- anchor.style.display = "none";
- document.body.appendChild(anchor);
- setTimeout(function() {
- anchor.click();
- document.body.removeChild(anchor);
- if(winMode===true){setTimeout(function(){ self.URL.revokeObjectURL(anchor.href);}, 250 );}
- }, 66);
- return true;
- }
- // handle non-a[download] safari as best we can:
- if(/(Version)\/(\d+)\.(\d+)(?:\.(\d+))?.*Safari\//.test(navigator.userAgent)) {
- url=url.replace(/^data:([\w\/\-\+]+)/, defaultMime);
- if(!window.open(url)){ // popup blocked, offer direct download:
- if(confirm("Displaying New Document\n\nUse Save As... to download, then click back to return to this page.")){ location.href=url; }
- }
- return true;
- }
- //do iframe dataURL download (old ch+FF):
- var f = document.createElement("iframe");
- document.body.appendChild(f);
- if(!winMode){ // force a mime that will download:
- url="data:"+url.replace(/^data:([\w\/\-\+]+)/, defaultMime);
- }
- f.src=url;
- setTimeout(function(){ document.body.removeChild(f); }, 333);
- }//end saver
- if (navigator.msSaveBlob) { // IE10+ : (has Blob, but not a[download] or URL)
- return navigator.msSaveBlob(blob, fileName);
- }
- if(self.URL){ // simple fast and modern way using Blob and URL:
- saver(self.URL.createObjectURL(blob), true);
- }else{
- // handle non-Blob()+non-URL browsers:
- if(typeof blob === "string" || blob.constructor===toString ){
- try{
- return saver( "data:" + mimeType + ";base64," + self.btoa(blob) );
- }catch(y){
- return saver( "data:" + mimeType + "," + encodeURIComponent(blob) );
- }
- }
- // Blob but not URL support:
- reader=new FileReader();
- reader.onload=function(e){
- saver(this.result);
- };
- reader.readAsDataURL(blob);
- }
- return true;
- }; /* end download() */
- }));
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