forked from EVOgeek/Vmeda.Online
87 lines
3.2 KiB
TypeScript
87 lines
3.2 KiB
TypeScript
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// (C) Copyright 2015 Martin Dougiamas
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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import { Injectable } from '@angular/core';
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import { Zip } from '@ionic-native/zip';
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import { JSZip } from 'jszip';
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import { File } from '@ionic-native/file';
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import { CoreMimetypeUtilsProvider } from '../../../providers/utils/mimetype';
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/**
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* Emulates the Cordova Zip plugin in desktop apps and in browser.
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*/
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@Injectable()
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export class ZipMock extends Zip {
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constructor(private file: File, private mimeUtils: CoreMimetypeUtilsProvider) {
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super();
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}
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/**
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* Extracts files from a ZIP archive.
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*
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* @param {string} source Path to the source ZIP file.
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* @param {string} destination Destination folder.
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* @param {Function} [onProgress] Optional callback to be called on progress update
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* @return {Promise<number>} Promise that resolves with a number. 0 is success, -1 is error.
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*/
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unzip(source: string, destination: string, onProgress?: Function) : Promise<number> {
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// Replace all %20 with spaces.
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source = source.replace(/%20/g, ' ');
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destination = destination.replace(/%20/g, ' ');
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let sourceDir = source.substring(0, source.lastIndexOf('/')),
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sourceName = source.substr(source.lastIndexOf('/') + 1);
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return this.file.readAsArrayBuffer(sourceDir, sourceName).then((data) => {
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let zip = new JSZip(data),
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promises = [],
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loaded = 0,
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total = Object.keys(zip.files).length;
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if (!zip.files || !zip.files.length) {
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// Nothing to extract.
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return 0;
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}
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zip.files.forEach((file, name) => {
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let type,
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promise;
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if (!file.dir) {
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// It's a file. Get the mimetype and write the file.
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type = this.mimeUtils.getMimeType(this.mimeUtils.getFileExtension(name));
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promise = this.file.writeFile(destination, name, new Blob([file.asArrayBuffer()], {type: type}));
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} else {
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// It's a folder, create it if it doesn't exist.
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promise = this.file.createDir(destination, name, false);
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}
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promises.push(promise.then(() => {
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// File unzipped, call the progress.
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loaded++;
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onProgress && onProgress({loaded: loaded, total: total});
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}));
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});
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return Promise.all(promises).then(function() {
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return 0;
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});
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}).catch(function() {
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// Error.
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return -1;
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});
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}
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}
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