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Java7 support for symbolic links etc
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/*
 * Copyright (C) 2012, Robin Rosenberg 
 * and other copyright owners as documented in the project's IP log.
 *
 * This program and the accompanying materials are made available
 * under the terms of the Eclipse Distribution License v1.0 which
 * accompanies this distribution, is reproduced below, and is
 * available at http://www.eclipse.org/org/documents/edl-v10.php
 *
 * 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 Eclipse Foundation, Inc. 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 OWNER 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 org.eclipse.jgit.util;

import java.io.File;
import java.io.IOException;

import org.eclipse.jgit.util.FS;

/**
 * FS implementation for Java7 on unix like systems
 */
public class FS_POSIX_Java7 extends FS_POSIX {

	FS_POSIX_Java7(FS_POSIX_Java7 src) {
		super(src);
	}

	FS_POSIX_Java7() {
		// empty
	}

	@Override
	public FS newInstance() {
		return new FS_POSIX_Java7(this);
	}

	@Override
	public boolean supportsExecute() {
		return true;
	}

	@Override
	public boolean canExecute(File f) {
		return FileUtil.canExecute(f);
	}

	@Override
	public boolean setExecute(File f, boolean canExecute) {
		return FileUtil.setExecute(f, canExecute);
	}

	@Override
	public boolean retryFailedLockFileCommit() {
		return false;
	}

	@Override
	public boolean supportsSymlinks() {
		return true;
	}

	@Override
	public boolean isSymLink(File path) throws IOException {
		return FileUtil.isSymlink(path);
	}

	@Override
	public long lastModified(File path) throws IOException {
		return FileUtil.lastModified(path);
	}

	@Override
	public void setLastModified(File path, long time) throws IOException {
		FileUtil.setLastModified(path, time);
	}

	@Override
	public long length(File f) throws IOException {
		return FileUtil.getLength(f);
	}

	@Override
	public boolean exists(File path) {
		return FileUtil.exists(path);
	}

	@Override
	public boolean isDirectory(File path) {
		return FileUtil.isDirectory(path);
	}

	@Override
	public boolean isFile(File path) {
		return FileUtil.isFile(path);
	}

	@Override
	public boolean isHidden(File path) throws IOException {
		return FileUtil.isHidden(path);
	}

	@Override
	public void setHidden(File path, boolean hidden) throws IOException {
		// no action on POSIX
	}

	@Override
	public String readSymLink(File path) throws IOException {
		return FileUtil.readSymlink(path);
	}

	@Override
	public void createSymLink(File path, String target) throws IOException {
		FileUtil.createSymLink(path, target);
	}
}