diff options
Diffstat (limited to 'plugins/org.apache.cordova.file/www/FileReader.js')
| -rw-r--r-- | plugins/org.apache.cordova.file/www/FileReader.js | 387 |
1 files changed, 0 insertions, 387 deletions
diff --git a/plugins/org.apache.cordova.file/www/FileReader.js b/plugins/org.apache.cordova.file/www/FileReader.js deleted file mode 100644 index 3cc75b5c..00000000 --- a/plugins/org.apache.cordova.file/www/FileReader.js +++ /dev/null @@ -1,387 +0,0 @@ -/* - * - * Licensed to the Apache Software Foundation (ASF) under one - * or more contributor license agreements. See the NOTICE file - * distributed with this work for additional information - * regarding copyright ownership. The ASF licenses this file - * to you under the Apache License, Version 2.0 (the - * "License"); you may not use this file except in compliance - * with the License. You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, - * software distributed under the License is distributed on an - * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY - * KIND, either express or implied. See the License for the - * specific language governing permissions and limitations - * under the License. - * -*/ - -var exec = require('cordova/exec'), - modulemapper = require('cordova/modulemapper'), - utils = require('cordova/utils'), - File = require('./File'), - FileError = require('./FileError'), - ProgressEvent = require('./ProgressEvent'), - origFileReader = modulemapper.getOriginalSymbol(this, 'FileReader'); - -/** - * This class reads the mobile device file system. - * - * For Android: - * The root directory is the root of the file system. - * To read from the SD card, the file name is "sdcard/my_file.txt" - * @constructor - */ -var FileReader = function() { - this._readyState = 0; - this._error = null; - this._result = null; - this._fileName = ''; - this._realReader = origFileReader ? new origFileReader() : {}; -}; - -// States -FileReader.EMPTY = 0; -FileReader.LOADING = 1; -FileReader.DONE = 2; - -utils.defineGetter(FileReader.prototype, 'readyState', function() { - return this._fileName ? this._readyState : this._realReader.readyState; -}); - -utils.defineGetter(FileReader.prototype, 'error', function() { - return this._fileName ? this._error: this._realReader.error; -}); - -utils.defineGetter(FileReader.prototype, 'result', function() { - return this._fileName ? this._result: this._realReader.result; -}); - -function defineEvent(eventName) { - utils.defineGetterSetter(FileReader.prototype, eventName, function() { - return this._realReader[eventName] || null; - }, function(value) { - this._realReader[eventName] = value; - }); -} -defineEvent('onloadstart'); // When the read starts. -defineEvent('onprogress'); // While reading (and decoding) file or fileBlob data, and reporting partial file data (progress.loaded/progress.total) -defineEvent('onload'); // When the read has successfully completed. -defineEvent('onerror'); // When the read has failed (see errors). -defineEvent('onloadend'); // When the request has completed (either in success or failure). -defineEvent('onabort'); // When the read has been aborted. For instance, by invoking the abort() method. - -function initRead(reader, file) { - // Already loading something - if (reader.readyState == FileReader.LOADING) { - throw new FileError(FileError.INVALID_STATE_ERR); - } - - reader._result = null; - reader._error = null; - reader._readyState = FileReader.LOADING; - - if (typeof file.fullPath == 'string') { - reader._fileName = file.fullPath; - } else { - reader._fileName = ''; - return true; - } - - reader.onloadstart && reader.onloadstart(new ProgressEvent("loadstart", {target:reader})); -} - -/** - * Abort reading file. - */ -FileReader.prototype.abort = function() { - if (origFileReader && !this._fileName) { - return this._realReader.abort(); - } - this._result = null; - - if (this._readyState == FileReader.DONE || this._readyState == FileReader.EMPTY) { - return; - } - - this._readyState = FileReader.DONE; - - // If abort callback - if (typeof this.onabort === 'function') { - this.onabort(new ProgressEvent('abort', {target:this})); - } - // If load end callback - if (typeof this.onloadend === 'function') { - this.onloadend(new ProgressEvent('loadend', {target:this})); - } -}; - -/** - * Read text file. - * - * @param file {File} File object containing file properties - * @param encoding [Optional] (see http://www.iana.org/assignments/character-sets) - */ -FileReader.prototype.readAsText = function(file, encoding) { - if (initRead(this, file)) { - return this._realReader.readAsText(file, encoding); - } - - // Default encoding is UTF-8 - var enc = encoding ? encoding : "UTF-8"; - var me = this; - var execArgs = [this._fileName, enc, file.start, file.end]; - - // Read file - exec( - // Success callback - function(r) { - // If DONE (cancelled), then don't do anything - if (me._readyState === FileReader.DONE) { - return; - } - - // Save result - me._result = r; - - // If onload callback - if (typeof me.onload === "function") { - me.onload(new ProgressEvent("load", {target:me})); - } - - // DONE state - me._readyState = FileReader.DONE; - - // If onloadend callback - if (typeof me.onloadend === "function") { - me.onloadend(new ProgressEvent("loadend", {target:me})); - } - }, - // Error callback - function(e) { - // If DONE (cancelled), then don't do anything - if (me._readyState === FileReader.DONE) { - return; - } - - // DONE state - me._readyState = FileReader.DONE; - - // null result - me._result = null; - - // Save error - me._error = new FileError(e); - - // If onerror callback - if (typeof me.onerror === "function") { - me.onerror(new ProgressEvent("error", {target:me})); - } - - // If onloadend callback - if (typeof me.onloadend === "function") { - me.onloadend(new ProgressEvent("loadend", {target:me})); - } - }, "File", "readAsText", execArgs); -}; - - -/** - * Read file and return data as a base64 encoded data url. - * A data url is of the form: - * data:[<mediatype>][;base64],<data> - * - * @param file {File} File object containing file properties - */ -FileReader.prototype.readAsDataURL = function(file) { - if (initRead(this, file)) { - return this._realReader.readAsDataURL(file); - } - - var me = this; - var execArgs = [this._fileName, file.start, file.end]; - - // Read file - exec( - // Success callback - function(r) { - // If DONE (cancelled), then don't do anything - if (me._readyState === FileReader.DONE) { - return; - } - - // DONE state - me._readyState = FileReader.DONE; - - // Save result - me._result = r; - - // If onload callback - if (typeof me.onload === "function") { - me.onload(new ProgressEvent("load", {target:me})); - } - - // If onloadend callback - if (typeof me.onloadend === "function") { - me.onloadend(new ProgressEvent("loadend", {target:me})); - } - }, - // Error callback - function(e) { - // If DONE (cancelled), then don't do anything - if (me._readyState === FileReader.DONE) { - return; - } - - // DONE state - me._readyState = FileReader.DONE; - - me._result = null; - - // Save error - me._error = new FileError(e); - - // If onerror callback - if (typeof me.onerror === "function") { - me.onerror(new ProgressEvent("error", {target:me})); - } - - // If onloadend callback - if (typeof me.onloadend === "function") { - me.onloadend(new ProgressEvent("loadend", {target:me})); - } - }, "File", "readAsDataURL", execArgs); -}; - -/** - * Read file and return data as a binary data. - * - * @param file {File} File object containing file properties - */ -FileReader.prototype.readAsBinaryString = function(file) { - if (initRead(this, file)) { - return this._realReader.readAsBinaryString(file); - } - - var me = this; - var execArgs = [this._fileName, file.start, file.end]; - - // Read file - exec( - // Success callback - function(r) { - // If DONE (cancelled), then don't do anything - if (me._readyState === FileReader.DONE) { - return; - } - - // DONE state - me._readyState = FileReader.DONE; - - me._result = r; - - // If onload callback - if (typeof me.onload === "function") { - me.onload(new ProgressEvent("load", {target:me})); - } - - // If onloadend callback - if (typeof me.onloadend === "function") { - me.onloadend(new ProgressEvent("loadend", {target:me})); - } - }, - // Error callback - function(e) { - // If DONE (cancelled), then don't do anything - if (me._readyState === FileReader.DONE) { - return; - } - - // DONE state - me._readyState = FileReader.DONE; - - me._result = null; - - // Save error - me._error = new FileError(e); - - // If onerror callback - if (typeof me.onerror === "function") { - me.onerror(new ProgressEvent("error", {target:me})); - } - - // If onloadend callback - if (typeof me.onloadend === "function") { - me.onloadend(new ProgressEvent("loadend", {target:me})); - } - }, "File", "readAsBinaryString", execArgs); -}; - -/** - * Read file and return data as a binary data. - * - * @param file {File} File object containing file properties - */ -FileReader.prototype.readAsArrayBuffer = function(file) { - if (initRead(this, file)) { - return this._realReader.readAsArrayBuffer(file); - } - - var me = this; - var execArgs = [this._fileName, file.start, file.end]; - - // Read file - exec( - // Success callback - function(r) { - // If DONE (cancelled), then don't do anything - if (me._readyState === FileReader.DONE) { - return; - } - - // DONE state - me._readyState = FileReader.DONE; - - me._result = r; - - // If onload callback - if (typeof me.onload === "function") { - me.onload(new ProgressEvent("load", {target:me})); - } - - // If onloadend callback - if (typeof me.onloadend === "function") { - me.onloadend(new ProgressEvent("loadend", {target:me})); - } - }, - // Error callback - function(e) { - // If DONE (cancelled), then don't do anything - if (me._readyState === FileReader.DONE) { - return; - } - - // DONE state - me._readyState = FileReader.DONE; - - me._result = null; - - // Save error - me._error = new FileError(e); - - // If onerror callback - if (typeof me.onerror === "function") { - me.onerror(new ProgressEvent("error", {target:me})); - } - - // If onloadend callback - if (typeof me.onloadend === "function") { - me.onloadend(new ProgressEvent("loadend", {target:me})); - } - }, "File", "readAsArrayBuffer", execArgs); -}; - -module.exports = FileReader; |
