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.
30 import org.apache.oro.text.regex.MalformedPatternException;
31 import org.apache.oro.text.regex.Pattern;
32 import org.apache.oro.text.regex.Perl5Compiler;
33 import org.apache.oro.text.regex.Perl5Matcher;
35 import java.io.BufferedInputStream;
36 import java.io.BufferedOutputStream;
37 import java.io.ByteArrayInputStream;
38 import java.io.ByteArrayOutputStream;
40 import java.io.FileInputStream;
41 import java.io.FileOutputStream;
42 import java.io.FilenameFilter;
43 import java.io.IOException;
44 import java.io.InputStream;
45 import java.io.OutputStream;
46 import java.util.Arrays;
47 import java.util.Collections;
48 import java.util.List;
50 public class FileRoutines {
51 protected static final int FILE_COPY_BUFFER_SIZE = 65536;
53 protected FileRoutines() {
59 public static void copyFile(File aSourceFile, File aDestinationFile) throws IOException {
60 BufferedInputStream inputStream;
61 BufferedOutputStream outputStream;
63 byte[] buffer = new byte[FILE_COPY_BUFFER_SIZE];
65 inputStream = new BufferedInputStream(new FileInputStream(aSourceFile));
67 createParentDirectories(aDestinationFile);
69 outputStream = new BufferedOutputStream(new FileOutputStream(aDestinationFile), 8192);
72 nrBytesRead = inputStream.read(buffer);
73 if (nrBytesRead > 0) {
74 outputStream.write(buffer, 0, nrBytesRead);
77 while (nrBytesRead >= 0);
89 * Copy a directory recursively
91 public static void copyDirectory(File aSourceDirectory, File aDestinationDirectory) throws IOException {
95 File[] files = aSourceDirectory.listFiles();
97 if (!aDestinationDirectory.exists())
98 aDestinationDirectory.mkdirs();
100 for (i = 0; i < files.length; i++) {
101 sourceFile = files[i];
102 destinationFile = new File(aDestinationDirectory, sourceFile.getName());
103 if (sourceFile.isDirectory()) {
104 if (!destinationFile.exists())
105 destinationFile.mkdir();
106 copyDirectory(sourceFile, destinationFile);
109 copyFile(sourceFile, destinationFile);
115 * Copy a file or directory. If the source is a file and the destination
116 * a directory, the file is copied using the same file name into the\
119 * @param aSource the source file
120 * @param aDestination the destination file
122 public static void copy(File aSource, File aDestination) throws IOException {
123 if (aSource.isDirectory()) {
124 copyDirectory(aSource, aDestination);
126 else if (aDestination.isDirectory()) {
127 copyFile(aSource, new File(aDestination, aSource.getName()));
130 copyFile(aSource, aDestination);
135 * Copy the contents of an {@link InputStream} to a {@link File}
137 public static void copy(InputStream aSource, File aDestination) throws IOException {
138 BufferedOutputStream outputStream =
139 new BufferedOutputStream(new FileOutputStream(aDestination), 8192);
142 byte[] buf = new byte[8 * 1024];
144 while ((read = aSource.read(buf)) != -1) {
145 outputStream.write(buf, 0, read);
149 outputStream.close();
153 * Moves a {@link File} to a new location
155 public static void move(File aSource, File aDestination) throws IOException {
156 aDestination.getParentFile().mkdirs();
157 if (!aSource.renameTo(aDestination)) {
158 byte[] buffer = new byte[16384];
159 FileInputStream inputStream = new FileInputStream(aSource);
160 FileOutputStream outputStream = new FileOutputStream(aDestination);
162 int count = inputStream.read(buffer);
164 outputStream.write(buffer, 0, count);
165 count = inputStream.read(buffer);
169 outputStream.close();
176 public static class RegExpFileFilter implements FilenameFilter {
177 private Pattern expression;
179 public RegExpFileFilter(String anExpression) throws MalformedPatternException {
180 Perl5Compiler compiler = new Perl5Compiler();
182 expression = compiler.compile(anExpression, Perl5Compiler.READ_ONLY_MASK);
185 public boolean accept(File aDir, String aName) {
186 Perl5Matcher matcher = new Perl5Matcher();
188 return !new File(aDir, aName).isDirectory() && matcher.matches(aName, expression);
192 public static class DirectoryFilter implements FilenameFilter {
193 public DirectoryFilter() {
196 public boolean accept(File aDir, String aName) {
197 return new File(aDir, aName).isDirectory();
202 * Return all files in a directory
204 * @param aDirectory The directory to list
205 * @param aFilter the filter to apply to files
206 * @return a <code>List</code> of filenames of type <code>String</code>
208 public static List getDirectoryContentsAsList(File aDirectory, FilenameFilter aFilter) {
209 Object[] contents = aDirectory.list(aFilter);
211 if (contents == null) {
212 return Collections.EMPTY_LIST;
215 return Arrays.asList(contents);
219 * Returns the extension of a path. (e.g. <code>getExtension("example.txt")</code> will
220 * return <code>"txt"</code>
222 public static String getExtension(String aPath) {
223 int position = aPath.lastIndexOf('.');
226 return aPath.substring(position + 1);
233 * Returns <code>true</code> if the given path is absolute
235 public static boolean isAbsolutePath(String aPath) {
236 return new File(aPath).isAbsolute();
240 * Transforms an absolute or relative path into an absolute
243 * @param aBasePath The base path to use for relative paths
244 * @param aPath The path to transform
245 * @return An absolute representation of the supplied path
247 public static File getAbsoluteOrRelativeFile(File aBasePath, String aPath) {
248 if (isAbsolutePath(aPath)) {
249 return new File(aPath);
252 return new File(aBasePath, aPath);
256 * Reads the content of a file into an array of bytes
258 public static byte[] readFileIntoByteArray(File aFile) throws IOException {
259 InputStream input = new FileInputStream(aFile);
260 ByteArrayOutputStream result = new ByteArrayOutputStream();
262 IORoutines.copyStream(input, result);
264 return result.toByteArray();
268 * Reads the content of a file into an array of bytes
270 public static void writeByteArrayIntoFile(byte[] anArray, File aFile) throws IOException {
271 OutputStream output = new FileOutputStream(aFile);
273 ByteArrayInputStream input = new ByteArrayInputStream(anArray);
275 IORoutines.copyStream(input, output);
287 * Creates all parent directories of a file if they do not exist
289 public static void createParentDirectories(File aFile) {
290 if (aFile.getParentFile() != null && !aFile.getParentFile().exists()) {
291 aFile.getParentFile().mkdirs();