79 lines
2.2 KiB
TypeScript
79 lines
2.2 KiB
TypeScript
import { dataURLtoBlob } from './stream';
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export function downloadByBase64(buf: string, filename: string, mime?: string, bom?: BlobPart) {
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const base64Buf = dataURLtoBlob(buf);
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downloadByData(base64Buf, filename, mime, bom);
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}
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/**
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* Download according to the background interface file stream
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* @param {*} data
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* @param {*} filename
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* @param {*} mime
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* @param {*} bom
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*/
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export function downloadByData(data: BlobPart, filename: string, mime?: string, bom?: BlobPart) {
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const blobData = typeof bom !== 'undefined' ? [bom, data] : [data];
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const blob = new Blob(blobData, { type: mime || 'application/octet-stream' });
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if (typeof window.navigator.msSaveBlob !== 'undefined') {
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window.navigator.msSaveBlob(blob, filename);
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} else {
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const blobURL = window.URL.createObjectURL(blob);
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const tempLink = document.createElement('a');
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tempLink.style.display = 'none';
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tempLink.href = blobURL;
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tempLink.setAttribute('download', filename);
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if (typeof tempLink.download === 'undefined') {
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tempLink.setAttribute('target', '_blank');
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}
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document.body.appendChild(tempLink);
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tempLink.click();
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document.body.removeChild(tempLink);
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window.URL.revokeObjectURL(blobURL);
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}
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}
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/**
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* Download file according to file address
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* @param {*} sUrl
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*/
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export function downloadByUrl({
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url,
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target = '_blank',
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fileName,
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}: {
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url: string;
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target?: TargetContext;
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fileName?: string;
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}): boolean {
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const isChrome = window.navigator.userAgent.toLowerCase().indexOf('chrome') > -1;
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const isSafari = window.navigator.userAgent.toLowerCase().indexOf('safari') > -1;
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if (/(iP)/g.test(window.navigator.userAgent)) {
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console.error('Your browser does not support download!');
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return false;
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}
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if (isChrome || isSafari) {
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const link = document.createElement('a');
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link.href = url;
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link.target = target;
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if (link.download !== undefined) {
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link.download = fileName || url.substring(url.lastIndexOf('/') + 1, url.length);
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}
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if (document.createEvent) {
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const e = document.createEvent('MouseEvents');
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e.initEvent('click', true, true);
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link.dispatchEvent(e);
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return true;
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}
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}
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if (url.indexOf('?') === -1) {
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url += '?download';
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}
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window.open(url, target);
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return true;
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}
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