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TwelveMonkeys Common I/O support classes.
/*
* Copyright (c) 2008, Harald Kuhr
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* * Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.twelvemonkeys.io;
import java.io.File;
import java.io.FileFilter;
import java.io.FilenameFilter;
import java.io.IOException;
/**
* Win32File
*
* @author Harald Kuhr
* @version $Id: //depot/branches/personal/haraldk/twelvemonkeys/release-2/twelvemonkeys-core/src/main/java/com/twelvemonkeys/io/Win32File.java#2 $
*/
final class Win32File extends File {
private final static boolean IS_WINDOWS = isWindows();
private static boolean isWindows() {
try {
String os = System.getProperty("os.name");
return os.toLowerCase().indexOf("windows") >= 0;
}
catch (Throwable t) {
// Ignore
}
return false;
}
private Win32File(File pPath) {
super(pPath.getPath());
}
public static void main(String[] pArgs) {
int argIdx = 0;
boolean recursive = false;
while (pArgs.length > argIdx + 1 && pArgs[argIdx].charAt(0) == '-' && pArgs[argIdx].length() > 1) {
if (pArgs[argIdx].charAt(1) == 'R' || pArgs[argIdx].equals("--recursive")) {
recursive = true;
}
else {
System.err.println("Unknown option: " + pArgs[argIdx]);
}
argIdx++;
}
File file = wrap(new File(pArgs[argIdx]));
System.out.println("file: " + file);
System.out.println("file.getClass(): " + file.getClass());
listFiles(file, 0, recursive);
}
private static void listFiles(File pFile, int pLevel, boolean pRecursive) {
if (pFile.isDirectory()) {
File[] files = pFile.listFiles();
for (int l = 0; l < pLevel; l++) {
System.out.print(" ");
}
System.out.println("Contents of " + pFile + ": ");
for (File file : files) {
for (int l = 0; l < pLevel; l++) {
System.out.print(" ");
}
System.out.println(" " + file);
if (pRecursive) {
listFiles(file, pLevel + 1, pLevel < 4);
}
}
}
}
/**
* Wraps a {@code File} object pointing to a Windows symbolic link
* ({@code .lnk} file) in a {@code Win32Lnk}.
* If the operating system is not Windows, the
* {@code pPath} parameter is returned unwrapped.
*
* @param pPath any path, possibly pointing to a Windows symbolic link file.
* May be {@code null}, in which case {@code null} is returned.
*
* @return a new {@code Win32Lnk} object if the current os is Windows, and
* the file is a Windows symbolic link ({@code .lnk} file), otherwise
* {@code pPath}
*/
public static File wrap(final File pPath) {
if (pPath == null) {
return null;
}
if (IS_WINDOWS) {
// Don't wrap if allready wrapped
if (pPath instanceof Win32File || pPath instanceof Win32Lnk) {
return pPath;
}
if (pPath.exists() && pPath.getName().endsWith(".lnk")) {
// If Win32 .lnk, let's wrap
try {
return new Win32Lnk(pPath);
}
catch (IOException e) {
// TODO: FixMe!
e.printStackTrace();
}
}
// Wwrap even if not a .lnk, as the listFiles() methods etc,
// could potentially return .lnk's, that we want to wrap later...
return new Win32File(pPath);
}
return pPath;
}
/**
* Wraps a {@code File} array, possibly pointing to Windows symbolic links
* ({@code .lnk} files) in {@code Win32Lnk}s.
*
* @param pPaths an array of {@code File}s, possibly pointing to Windows
* symbolic link files.
* May be {@code null}, in which case {@code null} is returned.
*
* @return {@code pPaths}, with any {@code File} representing a Windows
* symbolic link ({@code .lnk} file) wrapped in a {@code Win32Lnk}.
*/
public static File[] wrap(File[] pPaths) {
if (IS_WINDOWS) {
for (int i = 0; pPaths != null && i < pPaths.length; i++) {
pPaths[i] = wrap(pPaths[i]);
}
}
return pPaths;
}
// File overrides
@Override
public File getAbsoluteFile() {
return wrap(super.getAbsoluteFile());
}
@Override
public File getCanonicalFile() throws IOException {
return wrap(super.getCanonicalFile());
}
@Override
public File getParentFile() {
return wrap(super.getParentFile());
}
@Override
public File[] listFiles() {
return wrap(super.listFiles());
}
@Override
public File[] listFiles(FileFilter filter) {
return wrap(super.listFiles(filter));
}
@Override
public File[] listFiles(FilenameFilter filter) {
return wrap(super.listFiles(filter));
}
}