2 * Copyright (C) 2001-2006 The Mir-coders group
4 * This file is part of Mir.
6 * Mir is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * Mir is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with Mir; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 * In addition, as a special exception, The Mir-coders gives permission to link
21 * the code of this program with any library licensed under the Apache Software License,
22 * and distribute linked combinations including the two. You must obey the
23 * GNU General Public License in all respects for all of the code used other than
24 * the above mentioned libraries. If you modify this file, you may extend this
25 * exception to your version of the file, but you are not obligated to do so.
26 * If you do not wish to do so, delete this exception statement from your version.
33 import java.util.Arrays;
34 import java.util.Collections;
35 import java.util.List;
37 public class FileRoutines {
38 protected static final int FILE_COPY_BUFFER_SIZE = 65536;
40 protected FileRoutines() {
46 public static void copyFile(File aSourceFile, File aDestinationFile) throws IOException {
47 BufferedInputStream inputStream;
48 BufferedOutputStream outputStream;
50 byte[] buffer = new byte[FILE_COPY_BUFFER_SIZE];
52 inputStream = new BufferedInputStream(new FileInputStream(aSourceFile));
54 File directory = new File(aDestinationFile.getParent());
55 if (directory != null && !directory.exists()) {
58 outputStream = new BufferedOutputStream(new FileOutputStream(aDestinationFile), 8192);
61 nrBytesRead = inputStream.read(buffer);
63 outputStream.write(buffer, 0, nrBytesRead);
65 while (nrBytesRead >= 0);
77 * Copy a directory recursively
79 public static void copyDirectory(File aSourceDirectory, File aDestinationDirectory) throws IOException {
83 File[] files = aSourceDirectory.listFiles();
85 if (!aDestinationDirectory.exists())
86 aDestinationDirectory.mkdirs();
88 for (i = 0; i < files.length; i++) {
89 sourceFile = files[i];
90 destinationFile = new File(aDestinationDirectory, sourceFile.getName());
91 if (sourceFile.isDirectory()) {
92 if (!destinationFile.exists())
93 destinationFile.mkdir();
94 copyDirectory(sourceFile, destinationFile);
97 copyFile(sourceFile, destinationFile);
103 * Copy a file or directory. If the source is a file and the destination
104 * a directory, the file is copied using the same file name into the\
107 * @param aSource the source file
108 * @param aDestination the destination file
110 public static void copy(File aSource, File aDestination) throws IOException {
111 if (aSource.isDirectory()) {
112 copyDirectory(aSource, aDestination);
114 else if (aDestination.isDirectory()) {
115 copyFile(aSource, new File(aDestination, aSource.getName()));
118 copyFile(aSource, aDestination);
123 * Copy the contents of an {@link InputStream} to a {@link File}
125 public static void copy(InputStream aSource, File aDestination) throws IOException {
126 BufferedOutputStream outputStream =
127 new BufferedOutputStream(new FileOutputStream(aDestination), 8192);
130 byte[] buf = new byte[8 * 1024];
132 while ((read = aSource.read(buf)) != -1) {
133 outputStream.write(buf, 0, read);
137 outputStream.close();
141 * Moves a {@link File} to a new location
143 public static void move(File aSource, File aDestination) throws IOException {
144 aDestination.getParentFile().mkdirs();
145 if (!aSource.renameTo(aDestination)) {
146 byte[] buffer = new byte[16384];
147 FileInputStream inputStream = new FileInputStream(aSource);
148 FileOutputStream outputStream = new FileOutputStream(aDestination);
150 int count = inputStream.read(buffer);
152 outputStream.write(buffer, 0, count);
153 count = inputStream.read(buffer);
157 outputStream.close();
164 public static class RegExpFileFilter implements FilenameFilter {
165 private RE expression;
167 public RegExpFileFilter(String anExpression) {
169 expression = new RE(anExpression);
171 catch (Throwable t) {
172 throw new RuntimeException(t.getMessage());
176 public boolean accept(File aDir, String aName) {
177 return expression.isMatch(aName) && !new File(aDir, aName).isDirectory();
181 public static class DirectoryFilter implements FilenameFilter {
182 public DirectoryFilter() {
185 public boolean accept(File aDir, String aName) {
186 return new File(aDir, aName).isDirectory();
191 * Return all files in a directory
193 * @param aDirectory The directory to list
194 * @param aFilter the filter to apply to files
195 * @return a <code>List</code> of filenames of type <code>String</code>
197 public static List getDirectoryContentsAsList(File aDirectory, FilenameFilter aFilter) {
198 Object[] contents = aDirectory.list(aFilter);
200 if (contents == null) {
201 return Collections.EMPTY_LIST;
204 return Arrays.asList(contents);
208 * Return the extension of a path. (e.g. <code>getExtension("example.txt")</code> will
209 * return <code>"txt"</code>
211 public static String getExtension(String aPath) {
212 int position = aPath.lastIndexOf('.');
214 return aPath.substring(position + 1);
219 public static boolean isAbsolutePath(String aPath) {
220 return new File(aPath).isAbsolute();
224 * Transforms an absolute or relative path into an absolute
227 * @param aBasePath The base path to use for relative paths
228 * @param aPath The path to transform
229 * @return An absolute representation of the supplied path
231 public static File getAbsoluteOrRelativeFile(File aBasePath, String aPath) {
232 if (isAbsolutePath(aPath)) {
233 return new File(aPath);
236 return new File(aBasePath, aPath);
240 * Reads the content of a file into an array of bytes
242 public static byte[] readFileIntoByteArray(File aFile) throws IOException {
243 InputStream input = new FileInputStream(aFile);
244 ByteArrayOutputStream result = new ByteArrayOutputStream();
246 IORoutines.copyStream(input, result);
248 return result.toByteArray();
252 * Reads the content of a file into an array of bytes
254 public static void writeByteArrayIntoFile(byte[] anArray, File aFile) throws IOException {
255 OutputStream output = new FileOutputStream(aFile);
258 ByteArrayInputStream input = new ByteArrayInputStream(anArray);
260 IORoutines.copyStream(input, output);
274 * Creates all parent directories of a file if they do not exist
276 public static void createParentDirectories(File aFile) {
277 if (aFile.getParentFile() != null && !aFile.getParentFile().exists()) {
278 aFile.getParentFile().mkdirs();