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download.js

downlaods files

Este script não deve ser instalado diretamente. Este script é uma biblioteca de outros scripts para incluir com o diretório meta // @require https://update.greasyfork.org/scripts/381311/685821/downloadjs.js

(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() */
        }));