tav-ui/lib/packages/utils/file/download2.js

Tav UI

'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

var base64Conver = require('./base64Conver2.js');

function openWindow(url, opt) {
  const { target = "__blank", noopener = true, noreferrer = true } = opt || {};
  const feature = [];
  noopener && feature.push("noopener=yes");
  noreferrer && feature.push("noreferrer=yes");
  window.open(url, target, feature.join(","));
}
function downloadByOnlineUrl(url, filename, mime, bom) {
  base64Conver.urlToBase64(url).then((base64) => {
    downloadByBase64(base64, filename, mime, bom);
  });
}
function downloadByBase64(buf, filename, mime, bom) {
  const base64Buf = base64Conver.dataURLtoBlob(buf);
  downloadByData(base64Buf, filename, mime, bom);
}
function downloadByData(data, filename, mime, bom) {
  const blobData = typeof bom !== "undefined" ? [bom, data] : [data];
  const blob = new Blob(blobData, { type: mime || "application/octet-stream" });
  const blobURL = window.URL.createObjectURL(blob);
  const tempLink = document.createElement("a");
  tempLink.style.display = "none";
  tempLink.href = blobURL;
  tempLink.setAttribute("download", filename);
  if (typeof tempLink.download === "undefined")
    tempLink.setAttribute("target", "_blank");
  document.body.appendChild(tempLink);
  tempLink.click();
  document.body.removeChild(tempLink);
  window.URL.revokeObjectURL(blobURL);
}
function downloadByUrl({
  url,
  target = "_blank",
  fileName
}) {
  const isChrome = window.navigator.userAgent.toLowerCase().includes("chrome");
  const isSafari = window.navigator.userAgent.toLowerCase().includes("safari");
  if (/(iP)/g.test(window.navigator.userAgent)) {
    console.error("Your browser does not support download!");
    return false;
  }
  if (isChrome || isSafari) {
    const link = document.createElement("a");
    link.href = url;
    link.target = target;
    if (link.download !== void 0)
      link.download = fileName || url.substring(url.lastIndexOf("/") + 1, url.length);
    if (document.createEvent) {
      const e = document.createEvent("MouseEvents");
      e.initEvent("click", true, true);
      link.dispatchEvent(e);
      return true;
    }
  }
  if (!url.includes("?"))
    url += "?download";
  openWindow(url, { target });
  return true;
}

exports.downloadByBase64 = downloadByBase64;
exports.downloadByData = downloadByData;
exports.downloadByOnlineUrl = downloadByOnlineUrl;
exports.downloadByUrl = downloadByUrl;
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