| /* |
| 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. |
| */ |
| package org.apache.cordova.file; |
| |
| import android.os.Environment; |
| import android.os.StatFs; |
| |
| import java.io.File; |
| |
| /** |
| * This class provides file directory utilities. |
| * All file operations are performed on the SD card. |
| * |
| * It is used by the FileUtils class. |
| */ |
| public class DirectoryManager { |
| |
| @SuppressWarnings("unused") |
| private static final String LOG_TAG = "DirectoryManager"; |
| |
| /** |
| * Determine if a file or directory exists. |
| * @param name The name of the file to check. |
| * @return T=exists, F=not found |
| */ |
| public static boolean testFileExists(String name) { |
| boolean status; |
| |
| // If SD card exists |
| if ((testSaveLocationExists()) && (!name.equals(""))) { |
| File path = Environment.getExternalStorageDirectory(); |
| File newPath = constructFilePaths(path.toString(), name); |
| status = newPath.exists(); |
| } |
| // If no SD card |
| else { |
| status = false; |
| } |
| return status; |
| } |
| |
| /** |
| * Get the free space in external storage |
| * |
| * @return Size in KB or -1 if not available |
| */ |
| public static long getFreeExternalStorageSpace() { |
| String status = Environment.getExternalStorageState(); |
| long freeSpaceInBytes = 0; |
| |
| // Check if external storage exists |
| if (status.equals(Environment.MEDIA_MOUNTED)) { |
| freeSpaceInBytes = getFreeSpaceInBytes(Environment.getExternalStorageDirectory().getPath()); |
| } else { |
| // If no external storage then return -1 |
| return -1; |
| } |
| |
| return freeSpaceInBytes / 1024; |
| } |
| |
| /** |
| * Given a path return the number of free bytes in the filesystem containing the path. |
| * |
| * @param path to the file system |
| * @return free space in bytes |
| */ |
| public static long getFreeSpaceInBytes(String path) { |
| try { |
| StatFs stat = new StatFs(path); |
| long blockSize = stat.getBlockSize(); |
| long availableBlocks = stat.getAvailableBlocks(); |
| return availableBlocks * blockSize; |
| } catch (IllegalArgumentException e) { |
| // The path was invalid. Just return 0 free bytes. |
| return 0; |
| } |
| } |
| |
| /** |
| * Determine if SD card exists. |
| * |
| * @return T=exists, F=not found |
| */ |
| public static boolean testSaveLocationExists() { |
| String sDCardStatus = Environment.getExternalStorageState(); |
| boolean status; |
| |
| // If SD card is mounted |
| if (sDCardStatus.equals(Environment.MEDIA_MOUNTED)) { |
| status = true; |
| } |
| |
| // If no SD card |
| else { |
| status = false; |
| } |
| return status; |
| } |
| |
| /** |
| * Create a new file object from two file paths. |
| * |
| * @param file1 Base file path |
| * @param file2 Remaining file path |
| * @return File object |
| */ |
| private static File constructFilePaths (String file1, String file2) { |
| File newPath; |
| if (file2.startsWith(file1)) { |
| newPath = new File(file2); |
| } |
| else { |
| newPath = new File(file1 + "/" + file2); |
| } |
| return newPath; |
| } |
| } |