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/**********************************************************************
* Copyright (c) 2002,2003 Timesys Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Common Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors:
* Timesys - Initial API and implementation
**********************************************************************/
package org.eclipse.cdt.core.builder.util;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import org.eclipse.core.internal.runtime.Assert;
/**
* Singleton that wraps the concept of the current OS's
* filesystem in a way that allows us to work properly
* under Cygwin.
*/
public class Filesystem {
private static IFilesystem fInstance;
/**
* Create the IFilesystem instance appropriate for the current OS.
*
* Right now, this is based off of the speratorChar reported by
* java.io.File; there is probably a better way to deal with this.
*/
static {
// init to null, update with class reference if we can
// otherwise leave null to signal that we don't have a valid file system.
if (File.separatorChar == IFilesystem.FILESYSTEM_ROOT.charAt(0)) {
fInstance = new CUnixFilesystem();
} else {
fInstance = new CCygwinFilesystem();
}
}
private static IFilesystem getInstance() {
if (fInstance == null) {
throw new FileSystemException ("Problems encountered while searching for your file system.");
}
return fInstance;
}
public static boolean isValid() {
return (fInstance != null);
}
public static class FileSystemException extends Error {
FileSystemException (String s) {
super(s);
}
}
/**
* Private constructor to prevent instatiation.
*
* All members of this class are static, and intended to be accessed
* via "Filesystem.[method_name]".
*/
private Filesystem() {
}
/**
* @see org.eclipse.cdt.core.builder.util.IFilesystem#getRoot()
*/
public static String getRoot() {
return getInstance().getRoot();
}
/**
* @see org.eclipse.cdt.core.builder.util.IFilesystem#getNativePath(String)
*/
public static String getNativePath(String path) {
return getInstance().getNativePath(path);
}
/**
* @see org.eclipse.cdt.core.builder.util.IFilesystem#getNativePath(File)
*/
public static String getNativePath(File path) {
return getInstance().getNativePath(path);
}
/**
* @see org.eclipse.cdt.core.builder.util.IFilesystem#getUnixPath(String)
*/
public static String getUnixPath(String path) {
return getInstance().getUnixPath(path);
}
/**
* @see org.eclipse.cdt.core.builder.util.IFilesystem#getUnixPath(File)
*/
public static String getUnixPath(File path) {
return getInstance().getUnixPath(path);
}
/**
* Copy a file from sourceFile to destFile. Performs a binary file copy,
* reading data from sourceFile as a byte stream, and writing it to destFile
* as a byte stream.
*
* @param sourceFile File to copy.
* @param destFile Where to copy the file to.
* @param replaceIfExists If true, if destFile exists, it is replaced.
* @return True if the file was copied; false otherwise.
*/
public static boolean copyFile(File sourceFile, File destFile, boolean replaceIfExists) {
Assert.isNotNull(sourceFile);
Assert.isNotNull(destFile);
if (!sourceFile.exists()) {
return false;
}
if (sourceFile.equals(destFile)) {
return false;
}
if (replaceIfExists && destFile.exists()) {
destFile.delete();
}
if (destFile.exists()) {
return false;
}
FileInputStream fis = null;
FileOutputStream fos = null;
byte[] buf = new byte[1024];
int i = 0;
try {
fis = new FileInputStream(sourceFile);
fos = new FileOutputStream(destFile);
while(-1 != (i = fis.read(buf))) {
fos.write(buf, 0, i);
}
fos.close();
fis.close();
} catch (Exception e) {
e.printStackTrace();
if (destFile.exists()) {
destFile.delete();
}
return false;
}
return true;
}
}
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