diff options
Diffstat (limited to 'plugins/cordova-plugin-file/www/FileWriter.js')
| -rw-r--r-- | plugins/cordova-plugin-file/www/FileWriter.js | 302 |
1 files changed, 0 insertions, 302 deletions
diff --git a/plugins/cordova-plugin-file/www/FileWriter.js b/plugins/cordova-plugin-file/www/FileWriter.js deleted file mode 100644 index f5e0f564..00000000 --- a/plugins/cordova-plugin-file/www/FileWriter.js +++ /dev/null @@ -1,302 +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'), - FileError = require('./FileError'), - ProgressEvent = require('./ProgressEvent'); - -/** - * This class writes to the mobile device file system. - * - * For Android: - * The root directory is the root of the file system. - * To write to the SD card, the file name is "sdcard/my_file.txt" - * - * @constructor - * @param file {File} File object containing file properties - * @param append if true write to the end of the file, otherwise overwrite the file - */ -var FileWriter = function(file) { - this.fileName = ""; - this.length = 0; - if (file) { - this.localURL = file.localURL || file; - this.length = file.size || 0; - } - // default is to write at the beginning of the file - this.position = 0; - - this.readyState = 0; // EMPTY - - this.result = null; - - // Error - this.error = null; - - // Event handlers - this.onwritestart = null; // When writing starts - this.onprogress = null; // While writing the file, and reporting partial file data - this.onwrite = null; // When the write has successfully completed. - this.onwriteend = null; // When the request has completed (either in success or failure). - this.onabort = null; // When the write has been aborted. For instance, by invoking the abort() method. - this.onerror = null; // When the write has failed (see errors). -}; - -// States -FileWriter.INIT = 0; -FileWriter.WRITING = 1; -FileWriter.DONE = 2; - -/** - * Abort writing file. - */ -FileWriter.prototype.abort = function() { - // check for invalid state - if (this.readyState === FileWriter.DONE || this.readyState === FileWriter.INIT) { - throw new FileError(FileError.INVALID_STATE_ERR); - } - - // set error - this.error = new FileError(FileError.ABORT_ERR); - - this.readyState = FileWriter.DONE; - - // If abort callback - if (typeof this.onabort === "function") { - this.onabort(new ProgressEvent("abort", {"target":this})); - } - - // If write end callback - if (typeof this.onwriteend === "function") { - this.onwriteend(new ProgressEvent("writeend", {"target":this})); - } -}; - -/** - * Writes data to the file - * - * @param data text or blob to be written - */ -FileWriter.prototype.write = function(data) { - - var that=this; - var supportsBinary = (typeof window.Blob !== 'undefined' && typeof window.ArrayBuffer !== 'undefined'); - var isProxySupportBlobNatively = (cordova.platformId === "windows8" || cordova.platformId === "windows"); - var isBinary; - - // Check to see if the incoming data is a blob - if (data instanceof File || (!isProxySupportBlobNatively && supportsBinary && data instanceof Blob)) { - var fileReader = new FileReader(); - fileReader.onload = function() { - // Call this method again, with the arraybuffer as argument - FileWriter.prototype.write.call(that, this.result); - }; - if (supportsBinary) { - fileReader.readAsArrayBuffer(data); - } else { - fileReader.readAsText(data); - } - return; - } - - // Mark data type for safer transport over the binary bridge - isBinary = supportsBinary && (data instanceof ArrayBuffer); - if (isBinary && cordova.platformId === "windowsphone") { - // create a plain array, using the keys from the Uint8Array view so that we can serialize it - data = Array.apply(null, new Uint8Array(data)); - } - - // Throw an exception if we are already writing a file - if (this.readyState === FileWriter.WRITING) { - throw new FileError(FileError.INVALID_STATE_ERR); - } - - // WRITING state - this.readyState = FileWriter.WRITING; - - var me = this; - - // If onwritestart callback - if (typeof me.onwritestart === "function") { - me.onwritestart(new ProgressEvent("writestart", {"target":me})); - } - - // Write file - exec( - // Success callback - function(r) { - // If DONE (cancelled), then don't do anything - if (me.readyState === FileWriter.DONE) { - return; - } - - // position always increases by bytes written because file would be extended - me.position += r; - // The length of the file is now where we are done writing. - - me.length = me.position; - - // DONE state - me.readyState = FileWriter.DONE; - - // If onwrite callback - if (typeof me.onwrite === "function") { - me.onwrite(new ProgressEvent("write", {"target":me})); - } - - // If onwriteend callback - if (typeof me.onwriteend === "function") { - me.onwriteend(new ProgressEvent("writeend", {"target":me})); - } - }, - // Error callback - function(e) { - // If DONE (cancelled), then don't do anything - if (me.readyState === FileWriter.DONE) { - return; - } - - // DONE state - me.readyState = FileWriter.DONE; - - // Save error - me.error = new FileError(e); - - // If onerror callback - if (typeof me.onerror === "function") { - me.onerror(new ProgressEvent("error", {"target":me})); - } - - // If onwriteend callback - if (typeof me.onwriteend === "function") { - me.onwriteend(new ProgressEvent("writeend", {"target":me})); - } - }, "File", "write", [this.localURL, data, this.position, isBinary]); -}; - -/** - * Moves the file pointer to the location specified. - * - * If the offset is a negative number the position of the file - * pointer is rewound. If the offset is greater than the file - * size the position is set to the end of the file. - * - * @param offset is the location to move the file pointer to. - */ -FileWriter.prototype.seek = function(offset) { - // Throw an exception if we are already writing a file - if (this.readyState === FileWriter.WRITING) { - throw new FileError(FileError.INVALID_STATE_ERR); - } - - if (!offset && offset !== 0) { - return; - } - - // See back from end of file. - if (offset < 0) { - this.position = Math.max(offset + this.length, 0); - } - // Offset is bigger than file size so set position - // to the end of the file. - else if (offset > this.length) { - this.position = this.length; - } - // Offset is between 0 and file size so set the position - // to start writing. - else { - this.position = offset; - } -}; - -/** - * Truncates the file to the size specified. - * - * @param size to chop the file at. - */ -FileWriter.prototype.truncate = function(size) { - // Throw an exception if we are already writing a file - if (this.readyState === FileWriter.WRITING) { - throw new FileError(FileError.INVALID_STATE_ERR); - } - - // WRITING state - this.readyState = FileWriter.WRITING; - - var me = this; - - // If onwritestart callback - if (typeof me.onwritestart === "function") { - me.onwritestart(new ProgressEvent("writestart", {"target":this})); - } - - // Write file - exec( - // Success callback - function(r) { - // If DONE (cancelled), then don't do anything - if (me.readyState === FileWriter.DONE) { - return; - } - - // DONE state - me.readyState = FileWriter.DONE; - - // Update the length of the file - me.length = r; - me.position = Math.min(me.position, r); - - // If onwrite callback - if (typeof me.onwrite === "function") { - me.onwrite(new ProgressEvent("write", {"target":me})); - } - - // If onwriteend callback - if (typeof me.onwriteend === "function") { - me.onwriteend(new ProgressEvent("writeend", {"target":me})); - } - }, - // Error callback - function(e) { - // If DONE (cancelled), then don't do anything - if (me.readyState === FileWriter.DONE) { - return; - } - - // DONE state - me.readyState = FileWriter.DONE; - - // Save error - me.error = new FileError(e); - - // If onerror callback - if (typeof me.onerror === "function") { - me.onerror(new ProgressEvent("error", {"target":me})); - } - - // If onwriteend callback - if (typeof me.onwriteend === "function") { - me.onwriteend(new ProgressEvent("writeend", {"target":me})); - } - }, "File", "truncate", [this.localURL, size]); -}; - -module.exports = FileWriter; |
