| 1 | /* \r |
| 2 | * Copyright (C) 2007-2008 OpenIntents.org\r |
| 3 | *\r |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License");\r |
| 5 | * you may not use this file except in compliance with the License.\r |
| 6 | * You may obtain a copy of the License at\r |
| 7 | *\r |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0\r |
| 9 | *\r |
| 10 | * Unless required by applicable law or agreed to in writing, software\r |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS,\r |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r |
| 13 | * See the License for the specific language governing permissions and\r |
| 14 | * limitations under the License.\r |
| 15 | */\r |
| 16 | \r |
| 17 | package org.openintents.filemanager.util;\r |
| 18 | \r |
| 19 | import java.io.File;\r |
| 20 | import java.lang.reflect.Method;\r |
| 21 | import java.util.Date;\r |
| 22 | import java.util.zip.ZipFile;\r |
| 23 | \r |
| 24 | import android.content.Context;\r |
| 25 | import android.net.Uri;\r |
| 26 | import android.provider.MediaStore.Audio;\r |
| 27 | import android.provider.MediaStore.Video;\r |
| 28 | import android.text.format.DateFormat;\r |
| 29 | import android.text.format.Formatter;\r |
| 30 | import android.util.Log;\r |
| 31 | \r |
| 32 | /**\r |
| 33 | * @version 2009-07-03\r |
| 34 | * \r |
| 35 | * @author Peli\r |
| 36 | *\r |
| 37 | */\r |
| 38 | public class FileUtils {\r |
| 39 | \r |
| 40 | /** TAG for log messages. */\r |
| 41 | static final String TAG = "FileUtils";\r |
| 42 | private static final int X_OK = 1;\r |
| 43 | \r |
| 44 | private static boolean libLoadSuccess;\r |
| 45 | \r |
| 46 | static {\r |
| 47 | try {\r |
| 48 | System.loadLibrary("access");\r |
| 49 | libLoadSuccess = true;\r |
| 50 | } catch(UnsatisfiedLinkError e) {\r |
| 51 | libLoadSuccess = false;\r |
| 52 | Log.d(TAG, "libaccess.so failed to load.");\r |
| 53 | }\r |
| 54 | }\r |
| 55 | \r |
| 56 | /**\r |
| 57 | * use it to calculate file count in the directory recursively\r |
| 58 | */\r |
| 59 | private static int fileCount = 0;\r |
| 60 | \r |
| 61 | /**\r |
| 62 | * Whether the filename is a video file.\r |
| 63 | * \r |
| 64 | * @param filename\r |
| 65 | * @return\r |
| 66 | *//*\r |
| 67 | public static boolean isVideo(String filename) {\r |
| 68 | String mimeType = getMimeType(filename);\r |
| 69 | if (mimeType != null && mimeType.startsWith("video/")) {\r |
| 70 | return true;\r |
| 71 | } else {\r |
| 72 | return false;\r |
| 73 | }\r |
| 74 | }*/\r |
| 75 | \r |
| 76 | /**\r |
| 77 | * Whether the URI is a local one.\r |
| 78 | * \r |
| 79 | * @param uri\r |
| 80 | * @return\r |
| 81 | */\r |
| 82 | public static boolean isLocal(String uri) {\r |
| 83 | if (uri != null && !uri.startsWith("http://")) {\r |
| 84 | return true;\r |
| 85 | }\r |
| 86 | return false;\r |
| 87 | }\r |
| 88 | \r |
| 89 | /**\r |
| 90 | * Gets the extension of a file name, like ".png" or ".jpg".\r |
| 91 | * \r |
| 92 | * @param uri\r |
| 93 | * @return Extension including the dot("."); "" if there is no extension;\r |
| 94 | * null if uri was null.\r |
| 95 | */\r |
| 96 | public static String getExtension(String uri) {\r |
| 97 | if (uri == null) {\r |
| 98 | return null;\r |
| 99 | }\r |
| 100 | \r |
| 101 | int dot = uri.lastIndexOf(".");\r |
| 102 | if (dot >= 0) {\r |
| 103 | return uri.substring(dot);\r |
| 104 | } else {\r |
| 105 | // No extension.\r |
| 106 | return "";\r |
| 107 | }\r |
| 108 | }\r |
| 109 | \r |
| 110 | /**\r |
| 111 | * Returns true if uri is a media uri.\r |
| 112 | * \r |
| 113 | * @param uri\r |
| 114 | * @return\r |
| 115 | */\r |
| 116 | public static boolean isMediaUri(String uri) {\r |
| 117 | if (uri.startsWith(Audio.Media.INTERNAL_CONTENT_URI.toString())\r |
| 118 | || uri.startsWith(Audio.Media.EXTERNAL_CONTENT_URI.toString())\r |
| 119 | || uri.startsWith(Video.Media.INTERNAL_CONTENT_URI.toString())\r |
| 120 | || uri.startsWith(Video.Media.EXTERNAL_CONTENT_URI.toString())) {\r |
| 121 | return true;\r |
| 122 | } else {\r |
| 123 | return false;\r |
| 124 | }\r |
| 125 | }\r |
| 126 | \r |
| 127 | /**\r |
| 128 | * Convert File into Uri.\r |
| 129 | * @param file\r |
| 130 | * @return uri\r |
| 131 | */\r |
| 132 | public static Uri getUri(File file) {\r |
| 133 | if (file != null) {\r |
| 134 | return Uri.fromFile(file);\r |
| 135 | }\r |
| 136 | return null;\r |
| 137 | }\r |
| 138 | \r |
| 139 | /**\r |
| 140 | * Convert Uri into File.\r |
| 141 | * @param uri\r |
| 142 | * @return file\r |
| 143 | */\r |
| 144 | public static File getFile(Uri uri) {\r |
| 145 | if (uri != null) {\r |
| 146 | String filepath = uri.getPath();\r |
| 147 | if (filepath != null) {\r |
| 148 | return new File(filepath);\r |
| 149 | }\r |
| 150 | }\r |
| 151 | return null;\r |
| 152 | }\r |
| 153 | \r |
| 154 | /**\r |
| 155 | * Returns the path only (without file name).\r |
| 156 | * @param file\r |
| 157 | * @return\r |
| 158 | */\r |
| 159 | public static File getPathWithoutFilename(File file) {\r |
| 160 | if (file != null) {\r |
| 161 | if (file.isDirectory()) {\r |
| 162 | // no file to be split off. Return everything\r |
| 163 | return file;\r |
| 164 | } else {\r |
| 165 | String filename = file.getName();\r |
| 166 | String filepath = file.getAbsolutePath();\r |
| 167 | \r |
| 168 | // Construct path without file name.\r |
| 169 | String pathwithoutname = filepath.substring(0, filepath.length() - filename.length());\r |
| 170 | if (pathwithoutname.endsWith("/")) {\r |
| 171 | pathwithoutname = pathwithoutname.substring(0, pathwithoutname.length() - 1);\r |
| 172 | }\r |
| 173 | return new File(pathwithoutname);\r |
| 174 | }\r |
| 175 | }\r |
| 176 | return null;\r |
| 177 | }\r |
| 178 | \r |
| 179 | /**\r |
| 180 | * Constructs a file from a path and file name.\r |
| 181 | * \r |
| 182 | * @param curdir\r |
| 183 | * @param file\r |
| 184 | * @return\r |
| 185 | */\r |
| 186 | public static File getFile(String curdir, String file) {\r |
| 187 | String separator = "/";\r |
| 188 | if (curdir.endsWith("/")) {\r |
| 189 | separator = "";\r |
| 190 | }\r |
| 191 | File clickedFile = new File(curdir + separator\r |
| 192 | + file);\r |
| 193 | return clickedFile;\r |
| 194 | }\r |
| 195 | \r |
| 196 | public static File getFile(File curdir, String file) {\r |
| 197 | return getFile(curdir.getAbsolutePath(), file);\r |
| 198 | }\r |
| 199 | \r |
| 200 | public static String formatSize(Context context, long sizeInBytes) {\r |
| 201 | return Formatter.formatFileSize(context, sizeInBytes);\r |
| 202 | }\r |
| 203 | \r |
| 204 | public static String formatDate(Context context, long dateTime) {\r |
| 205 | return DateFormat.getDateFormat(context).format(new Date(dateTime));\r |
| 206 | }\r |
| 207 | \r |
| 208 | public static int getFileCount(File file){\r |
| 209 | fileCount = 0;\r |
| 210 | calculateFileCount(file);\r |
| 211 | return fileCount;\r |
| 212 | }\r |
| 213 | \r |
| 214 | /**\r |
| 215 | * @param f - file which need be checked\r |
| 216 | * @return if is archive - returns true othewise\r |
| 217 | */\r |
| 218 | public static boolean checkIfZipArchive(File f){\r |
| 219 | try {\r |
| 220 | new ZipFile(f);\r |
| 221 | return true;\r |
| 222 | } catch (Exception e){\r |
| 223 | return false;\r |
| 224 | }\r |
| 225 | }\r |
| 226 | \r |
| 227 | private static void calculateFileCount(File file){\r |
| 228 | if (!file.isDirectory()){\r |
| 229 | fileCount++;\r |
| 230 | return;\r |
| 231 | }\r |
| 232 | if (file.list() == null){\r |
| 233 | return;\r |
| 234 | }\r |
| 235 | for (String fileName: file.list()){\r |
| 236 | File f = new File(file.getAbsolutePath()+File.separator+fileName);\r |
| 237 | calculateFileCount(f);\r |
| 238 | }\r |
| 239 | } \r |
| 240 | \r |
| 241 | /**\r |
| 242 | * Native helper method, returns whether the current process has execute privilages.\r |
| 243 | * @param a File\r |
| 244 | * @return returns TRUE if the current process has execute privilages.\r |
| 245 | */\r |
| 246 | public static boolean canExecute(File mContextFile) {\r |
| 247 | try {\r |
| 248 | // File.canExecute() was introduced in API 9. If it doesn't exist, then\r |
| 249 | // this will throw an exception and the NDK version will be used.\r |
| 250 | Method m = File.class.getMethod("canExecute", new Class[] {} );\r |
| 251 | Boolean result=(Boolean)m.invoke(mContextFile);\r |
| 252 | return result;\r |
| 253 | } catch (Exception e) {\r |
| 254 | if(libLoadSuccess){\r |
| 255 | return access(mContextFile.getPath(), X_OK);\r |
| 256 | } else {\r |
| 257 | return false;\r |
| 258 | }\r |
| 259 | }\r |
| 260 | }\r |
| 261 | \r |
| 262 | // Native interface to unistd.h's access(*char, int) method.\r |
| 263 | public static native boolean access(String path, int mode);\r |
| 264 | }\r |