115 lines
4.1 KiB
JavaScript
115 lines
4.1 KiB
JavaScript
"use strict";
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function download(data, strFileName, strMimeType) {
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let self = window, defaultMime = "application/octet-stream", mimeType = strMimeType || defaultMime, payload = data, url = !strFileName && !strMimeType && payload, anchor = document.createElement("a"), toString = function(a) {
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return String(a);
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}, myBlob = self.Blob || self.MozBlob || self.WebKitBlob || toString, fileName = strFileName || "download", blob, reader;
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myBlob = myBlob.call ? myBlob.bind(self) : Blob;
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if (String(this) === "true") {
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payload = [payload, mimeType];
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mimeType = payload[0];
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payload = payload[1];
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}
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if (url && url.length < 2048) {
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fileName = url.split("/").pop().split("?")[0];
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anchor.href = url;
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if (anchor.href.indexOf(url) !== -1) {
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let ajax = new XMLHttpRequest();
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ajax.open("GET", url, true);
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ajax.responseType = "blob";
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ajax.onload = function(e) {
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download(e.target.response, fileName, defaultMime);
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};
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setTimeout(function() {
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ajax.send();
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}, 0);
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return ajax;
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}
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}
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if (/^data:([\w+-]+\/[\w+.-]+)?[,;]/.test(payload)) {
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if (payload.length > 1024 * 1024 * 1.999 && myBlob !== toString) {
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payload = dataUrlToBlob(payload);
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mimeType = payload.type || defaultMime;
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} else {
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return navigator.msSaveBlob ? (
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// IE10 can't do a[download], only Blobs:
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navigator.msSaveBlob(dataUrlToBlob(payload), fileName)
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) : saver(payload);
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}
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} else {
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if (/([\x80-\xff])/.test(payload)) {
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let i = 0, tempUiArr = new Uint8Array(payload.length), mx = tempUiArr.length;
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for (i; i < mx; ++i)
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tempUiArr[i] = payload.charCodeAt(i);
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payload = new myBlob([tempUiArr], { type: mimeType });
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}
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}
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blob = payload instanceof myBlob ? payload : new myBlob([payload], { type: mimeType });
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function dataUrlToBlob(strUrl) {
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let 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);
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for (i; i < mx; ++i)
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uiArr[i] = binData.charCodeAt(i);
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return new myBlob([uiArr], { type });
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}
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function saver(url2, winMode) {
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if ("download" in anchor) {
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anchor.href = url2;
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anchor.setAttribute("download", fileName);
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anchor.className = "download-js-link";
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anchor.innerHTML = "downloading...";
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anchor.style.display = "none";
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document.body.appendChild(anchor);
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setTimeout(function() {
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anchor.click();
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document.body.removeChild(anchor);
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if (winMode === true) {
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setTimeout(function() {
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self.URL.revokeObjectURL(anchor.href);
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}, 250);
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}
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}, 66);
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return true;
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}
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if (/(Version)\/(\d+)\.(\d+)(?:\.(\d+))?.*Safari\//.test(navigator.userAgent)) {
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if (/^data:/.test(url2))
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url2 = "data:" + url2.replace(/^data:([\w\/\-\+]+)/, defaultMime);
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if (!window.open(url2)) {
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if (confirm("Displaying New Document\n\nUse Save As... to download, then click back to return to this page.")) {
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location.href = url2;
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}
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}
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return true;
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}
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let f = document.createElement("iframe");
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document.body.appendChild(f);
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if (!winMode && /^data:/.test(url2)) {
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url2 = "data:" + url2.replace(/^data:([\w\/\-\+]+)/, defaultMime);
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}
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f.src = url2;
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setTimeout(function() {
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document.body.removeChild(f);
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}, 333);
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}
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if (navigator.msSaveBlob) {
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return navigator.msSaveBlob(blob, fileName);
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}
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if (self.URL) {
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saver(self.URL.createObjectURL(blob), true);
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} else {
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if (typeof blob === "string" || blob.constructor === toString) {
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try {
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return saver("data:" + mimeType + ";base64," + self.btoa(blob));
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} catch (y) {
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return saver("data:" + mimeType + "," + encodeURIComponent(blob));
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}
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}
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reader = new FileReader();
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reader.onload = function(e) {
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saver(this.result);
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};
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reader.readAsDataURL(blob);
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}
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return true;
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}
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exports.download = download;
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//# sourceMappingURL=../../../.sourcemap/mp-weixin/components/download-excel/download.js.map
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