EDIT

// $Id$

/**

* Copyright (C) 2007 EDIT

* European Distributed Institute of Taxonomy 

* http://www.e-taxonomy.eu

* 

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.cdm.common;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import org.apache.log4j.Logger;

/**

 * @author a.mueller

 * @created 20.11.2008

 * @version 1.0

 */

public class FileCopy {

	private static final Logger logger = Logger.getLogger(FileCopy.class);

	// overwrite constants

	public static final int DO_OVERWRITE = 1;

	public static final int NO_OVERWRITE = 2;

	// default values

	private static int bufferSize = 4 * 1024;

	private static int overwrite = DO_OVERWRITE;

	/**

	 * Copies a File to another directory 

	 * @param sourceFile

	 * @param destinationDirectory

	 * @param destFileName

	 * @return

	 * @throws IOException

	 */

	public static boolean copy(File sourceFile, File destinationDirectory, String destFileName)

			throws IOException {

		if (sourceFile == null){

			logger.debug("No sourcefile defined");

			throw new IOException("No sourcefile defined");

		}

		if (!sourceFile.isFile() || !sourceFile.canRead()) {

			logger.debug("Not a readable file: " + sourceFile.getName());

			throw new IOException("Not a readable file: " + sourceFile.getName());

		}

		if (destFileName == null || destFileName.equals("")){

			destFileName = sourceFile.getName();

		}

		InputStream in = new FileInputStream(sourceFile);

		copy(in, destinationDirectory, destFileName);

		if (!destinationDirectory.isDirectory()) {

			logger.warn("Not a directory: " + destinationDirectory.getName());

			return false;

		}

		File destinationFile = new File(destinationDirectory, destFileName);

		OutputStream out = new FileOutputStream(destinationFile);

		return copy(in, out);

	}

	public static boolean copy(InputStream in, File destinationDirectory, String destFileName)

			throws IOException {

		if (!destinationDirectory.isDirectory()) {

			throw new IOException("Destination is not a directory");

		}

		if (destFileName == null || destFileName.equals("")){

			throw new IOException("No destination file name specified");

		}

		File destinationFile = new File(destinationDirectory, destFileName);

		OutputStream out = new FileOutputStream(destinationFile);

		return copy(in, out);

}

	public static boolean copy(InputStream in, OutputStream out)

			throws IOException {

		byte[] buffer = new byte[bufferSize];

		int bytesRead;

		while ((bytesRead = in.read(buffer)) >= 0) {

			out.write(buffer, 0, bytesRead);

		}

		out.close();

		in.close();

		logger.debug("File copied");

		return true;

	}

	public static boolean copy(String source, String destDirectory, String destFileName)

			throws IOException {

		File sourceFile = new File(source);

		File destinationDir = new File(destDirectory);

		return copy(sourceFile, destinationDir, destFileName);

	}

	public static boolean copy(String source, String destDirectory)

			throws IOException {

		return copy(source, destDirectory, null);

	}

	/**

	 * True if file 

	 * @param file File destination

	 * @return true if data can be copied, false otherwise

	 */

	public static boolean doCopy(File file) {

		boolean exists = file.exists();

		if (overwrite == DO_OVERWRITE || !exists) {

			return true;

		} else if (overwrite == NO_OVERWRITE) {

			return false;

		} else{

			return false;

		}

	}

}