Mon 21 Jul 22:43:21 CEST 2025
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js/ui/cordova/plugins/cordova-plugin-file/www/browser/Preparing.js
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js/ui/cordova/plugins/cordova-plugin-file/www/browser/Preparing.js
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/*
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*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. 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,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*
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*/
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(function () {
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/*global require*/
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//Only Chrome uses this file.
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if (!require('./isChrome')()) {
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return;
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}
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var channel = require('cordova/channel');
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var FileError = require('./FileError');
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var PERSISTENT_FS_QUOTA = 5 * 1024 * 1024;
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var filePluginIsReadyEvent = new Event('filePluginIsReady');
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var entryFunctionsCreated = false;
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var quotaWasRequested = false;
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var eventWasThrown = false;
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if (!window.requestFileSystem) {
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window.requestFileSystem = function(type, size, win, fail) {
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if (fail) {
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fail("Not supported");
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}
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};
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} else {
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window.requestFileSystem(window.TEMPORARY, 1, createFileEntryFunctions, function() {});
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}
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if (!window.resolveLocalFileSystemURL) {
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window.resolveLocalFileSystemURL = function(url, win, fail) {
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if(fail) {
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fail("Not supported");
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}
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};
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}
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// Resolves a filesystem entry by its path - which is passed either in standard (filesystem:file://) or
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// Cordova-specific (cdvfile://) universal way.
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// Aligns with specification: http://www.w3.org/TR/2011/WD-file-system-api-20110419/#widl-LocalFileSystem-resolveLocalFileSystemURL
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var nativeResolveLocalFileSystemURL = window.resolveLocalFileSystemURL || window.webkitResolveLocalFileSystemURL;
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window.resolveLocalFileSystemURL = function(url, win, fail) {
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/* If url starts with `cdvfile` then we need convert it to Chrome real url first:
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cdvfile://localhost/persistent/path/to/file -> filesystem:file://persistent/path/to/file */
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if (url.trim().substr(0,7) === "cdvfile") {
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/* Quirk:
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Plugin supports cdvfile://localhost (local resources) only.
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I.e. external resources are not supported via cdvfile. */
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if (url.indexOf("cdvfile://localhost") !== -1) {
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// Browser supports temporary and persistent only
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var indexPersistent = url.indexOf('persistent');
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var indexTemporary = url.indexOf('temporary');
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/* Chrome urls start with 'filesystem:' prefix. See quirk:
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toURL function in Chrome returns filesystem:-prefixed path depending on application host.
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For example, filesystem:file:///persistent/somefile.txt,
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filesystem:http://localhost:8080/persistent/somefile.txt. */
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var prefix = 'filesystem:file:///';
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if (location.protocol !== 'file:') {
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prefix = 'filesystem:' + location.origin + '/';
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}
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var result;
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if (indexPersistent !== -1) {
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// cdvfile://localhost/persistent/path/to/file -> filesystem:file://persistent/path/to/file
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// or filesystem:http://localhost:8080/persistent/path/to/file
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result = prefix + 'persistent' + url.substr(indexPersistent + 10);
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nativeResolveLocalFileSystemURL(result, win, fail);
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return;
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}
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if (indexTemporary !== -1) {
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// cdvfile://localhost/temporary/path/to/file -> filesystem:file://temporary/path/to/file
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// or filesystem:http://localhost:8080/temporary/path/to/file
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result = prefix + 'temporary' + url.substr(indexTemporary + 9);
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nativeResolveLocalFileSystemURL(result, win, fail);
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return;
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}
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}
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// cdvfile other than local file resource is not supported
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fail && fail(new FileError(FileError.ENCODING_ERR));
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} else {
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nativeResolveLocalFileSystemURL(url, win, fail);
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}
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};
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function createFileEntryFunctions(fs) {
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fs.root.getFile('todelete_658674_833_4_cdv', {create: true}, function(fileEntry) {
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var fileEntryType = Object.getPrototypeOf(fileEntry);
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var entryType = Object.getPrototypeOf(fileEntryType);
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// Save the original method
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var origToURL = entryType.toURL;
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entryType.toURL = function () {
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var origURL = origToURL.call(this);
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if (this.isDirectory && origURL.substr(-1) !== '/') {
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return origURL + '/';
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}
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return origURL;
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};
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entryType.toNativeURL = function () {
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console.warn("DEPRECATED: Update your code to use 'toURL'");
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return this.toURL();
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};
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entryType.toInternalURL = function() {
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if (this.toURL().indexOf("persistent") > -1) {
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return "cdvfile://localhost/persistent" + this.fullPath;
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}
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if (this.toURL().indexOf("temporary") > -1) {
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return "cdvfile://localhost/temporary" + this.fullPath;
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}
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};
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entryType.setMetadata = function(win, fail /*, metadata*/) {
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fail && fail("Not supported");
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};
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fileEntry.createWriter(function(writer) {
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var originalWrite = writer.write;
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var writerProto = Object.getPrototypeOf(writer);
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writerProto.write = function(blob) {
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if(blob instanceof Blob) {
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originalWrite.apply(this, [blob]);
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} else {
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var realBlob = new Blob([blob]);
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originalWrite.apply(this, [realBlob]);
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}
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};
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fileEntry.remove(function(){ entryFunctionsCreated = true; }, function(){ /* empty callback */ });
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});
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});
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}
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window.initPersistentFileSystem = function(size, win, fail) {
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if (navigator.webkitPersistentStorage) {
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navigator.webkitPersistentStorage.requestQuota(size, win, fail);
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return;
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}
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fail("This browser does not support this function");
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};
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window.isFilePluginReadyRaised = function () { return eventWasThrown; };
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window.initPersistentFileSystem(PERSISTENT_FS_QUOTA, function() {
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console.log('Persistent fs quota granted');
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quotaWasRequested = true;
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}, function(e){
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console.log('Error occured while trying to request Persistent fs quota: ' + JSON.stringify(e));
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});
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channel.onCordovaReady.subscribe(function () {
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function dispatchEventIfReady() {
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if (entryFunctionsCreated && quotaWasRequested) {
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window.dispatchEvent(filePluginIsReadyEvent);
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eventWasThrown = true;
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} else {
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setTimeout(dispatchEventIfReady, 100);
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}
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}
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dispatchEventIfReady();
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}, false);
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})();
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