/*
    *   Copyright 2005 Alvaro Gonzalez de Paz
    *
    *  Licensed under the Apache License, Version 2.0 (the "License");
    *  you may not use this file except in compliance with the License.
    *  You may obtain a copy of the License at
    *
    *      http://www.apache.org/licenses/LICENSE-2.0
    *
   *  Unless required by applicable law or agreed to in writing, software
   *  distributed under the License is distributed on an "AS IS" BASIS,
   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   *  See the License for the specific language governing permissions and
   *  limitations under the License.
   *  
   * This is a derived work from source code taken from Liferay.
   * 	(http://www.liferay.com)
  */
  package kortsoft.kmx.test;
  
  import java.io.BufferedReader;
  import java.io.BufferedWriter;
  import java.io.ByteArrayOutputStream;
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.FileNotFoundException;
  import java.io.FileOutputStream;
  import java.io.FileReader;
  import java.io.FileWriter;
  import java.io.IOException;
  import java.io.Reader;
  
  import java.nio.channels.FileChannel;
  
  import java.util.ArrayList;
  import java.util.Enumeration;
  import java.util.List;
  import java.util.Properties;
  import java.util.jar.JarEntry;
  import java.util.jar.JarOutputStream;
  
  //import org.apache.commons.lang.StringUtils;
  
  /***
   * File utility methods
   * @author  Brian Wing Shun Chan, Jorge Ferrer
   *
   */
  public class FileUtil {
  
  	public static void copyDirectory(
  		String sourceDirName, String destinationDirName) {
  
  		copyDirectory(new File(sourceDirName), new File(destinationDirName));
  	}
  
  	public static void copyDirectory(File source, File destination) {
  		if (source.exists() && source.isDirectory()) {
  			if (!destination.exists()) {
  				destination.mkdirs();
  			}
  
  			File[] fileArray = source.listFiles();
  
  			for (int i = 0; i < fileArray.length; i++) {
  				if (fileArray[i].isDirectory()) {
  					copyDirectory(
  						fileArray[i],
  						new File(destination.getPath() + File.separator
  							+ fileArray[i].getName()));
  				}
  				else {
  					copyFile(
  						fileArray[i],
  						new File(destination.getPath() + File.separator
  							+ fileArray[i].getName()));
  				}
  			}
  		}
  	}
  
  	public static void copyFile(
  		String sourceFileName, String destinationFileName) {
  
  		copyFile(new File(sourceFileName), new File(destinationFileName));
  	}
  
  	public static void copyFile(File source, File destination) {
  		if (!source.exists()) {
  			return;
  		}
  
  		if ((destination.getParentFile() != null) &&
  			(!destination.getParentFile().exists())) {
  
  			destination.getParentFile().mkdirs();
  		}
  
  		try {
 			FileChannel srcChannel = new FileInputStream(source).getChannel();
 			FileChannel dstChannel = new FileOutputStream(
 				destination).getChannel();
 
 			dstChannel.transferFrom(srcChannel, 0, srcChannel.size());
 
 			srcChannel.close();
 			dstChannel.close();
 		}
 		catch (IOException ioe) {
 			ioe.printStackTrace();
 		}
 	}
 
 	public static void copyFileLazy(String source, String destination)
 		throws IOException {
 
 		String oldContent = null;
 		try {
 			oldContent = FileUtil.read(source);
 		}
 		catch (FileNotFoundException fnfe) {
 			return;
 		}
 
 		String newContent = null;
 		try {
 			newContent = FileUtil.read(destination);
 		}
 		catch (FileNotFoundException fnfe) {
 		}
 
 		if (oldContent == null || !oldContent.equals(newContent)) {
 			FileUtil.copyFile(source, destination);
 		}
 	}
 
 	public static void deltree(String directory) {
 		deltree(new File(directory));
 	}
 
 	public static void deltree(File directory) {
 		if (directory.exists() && directory.isDirectory()) {
 			File[] fileArray = directory.listFiles();
 
 			for (int i = 0; i < fileArray.length; i++) {
 				if (fileArray[i].isDirectory()) {
 					deltree(fileArray[i]);
 				}
 				else {
 					fileArray[i].delete();
 				}
 			}
 
 			directory.delete();
 		}
 	}
 
 	public static byte[] getBytes(File file) throws IOException {
 		if (file == null || !file.exists()) {
 			return null;
 		}
 
 		ByteArrayOutputStream out = new ByteArrayOutputStream();
 		FileInputStream in = new FileInputStream(file);
 
 		int c = in.read();
 
 		while (c != -1) {
 			out.write(c);
 			c = in.read();
 		}
 
 		in.close();
 		out.close();
 
 		return out.toByteArray();
 	}
 
 	public static String getPath(String fullFileName) {
 		int pos = fullFileName.lastIndexOf("/");
 
 		if (pos == -1) {
 			pos = fullFileName.lastIndexOf("//");
 		}
 
 		String shortFileName = fullFileName.substring(0, pos);
 
 		if (shortFileName.trim().equals(""))		
 			return "/";
 
 		return shortFileName;
 	}
 
 	public static String getShortFileName(String fullFileName) {
 		int pos = fullFileName.lastIndexOf("/");
 
 		if (pos == -1) {
 			pos = fullFileName.lastIndexOf("//");
 		}
 
 		String shortFileName =
 			fullFileName.substring(pos + 1, fullFileName.length());
 
 		return shortFileName;
 	}
 
 	public static boolean exists(String fileName) {
 		File file = new File(fileName);
 
 		return file.exists();
 	}
 
 	public static String[] listDirs(String fileName) throws IOException {
 		return listDirs(new File(fileName));
 	}
 
 	public static String[] listDirs(File file) throws IOException {
 		List<String> dirs = new ArrayList<String>();
 
 		File[] fileArray = file.listFiles();
 
 		for (int i = 0; i < fileArray.length; i++) {
 			if (fileArray[i].isDirectory()) {
 				dirs.add(fileArray[i].getName());
 			}
 		}
 
 		return dirs.toArray(new String[0]);
 	}
 
 	public static String[] listFiles(String fileName) throws IOException {
 		return listFiles(new File(fileName));
 	}
 
 	public static String[] listFiles(File file) throws IOException {
 		List<String> files = new ArrayList<String>();
 
 		File[] fileArray = file.listFiles();
 
 		for (int i = 0; i < fileArray.length; i++) {
 			if (fileArray[i].isFile()) {
 				files.add(fileArray[i].getName());
 			}
 		}
 
 		return files.toArray(new String[0]);
 	}
 
 	public static void mkdirs(String pathName) {
 		File file = new File(pathName);
 		file.mkdirs();
 	}
 
 	public static boolean move(
 		String sourceFileName, String destinationFileName) {
 
 		return move(new File(sourceFileName), new File(destinationFileName));
 	}
 
 	public static boolean move(File source, File destination) {
 		if (!source.exists()) {
 			return false;
 		}
 
 		destination.delete();
 
 		return source.renameTo(destination);
 	}
 
 	public static String read(String fileName) throws IOException {
 		return read(new File(fileName));
 	}
 
 	public static String read(File file) throws IOException {
 		BufferedReader br = new BufferedReader(new FileReader(file));
 
 		StringBuffer sb = new StringBuffer();
 		String line = null;
 
 		while ((line = br.readLine()) != null) {
 			sb.append(line).append('\n');
 		}
 
 		br.close();
 
 		return sb.toString().trim();
 	}
 
 	public static String replaceSeparator(String fileName) {
 		return fileName.replaceAll("//","/");		
 	}
 
 	public static List toList(Reader reader) {
 		List<String> list = new ArrayList<String>();
 
 		try {
 			BufferedReader br = new BufferedReader(reader);
 
 			StringBuffer sb = new StringBuffer();
 			String line = null;
 
 			while ((line = br.readLine()) != null) {
 				list.add(line);
 			}
 
 			br.close();
 		}
 		catch (IOException ioe) {
 		}
 
 		return list;
 	}
 
 	public static List toList(String fileName) {
 		try {
 			return toList(new FileReader(fileName));
 		}
 		catch (IOException ioe) {
 			return new ArrayList();
 		}
 	}
 
 	public static Properties toProperties(FileInputStream fis) {
 		Properties props = new Properties();
 
 		try {
 			props.load(fis);
 		}
 		catch (IOException ioe) {
 		}
 
 		return props;
 	}
 
 	public static Properties toProperties(String fileName) {
 		try {
 			return toProperties(new FileInputStream(fileName));
 		}
 		catch (IOException ioe) {
 			return new Properties();
 		}
 	}
 
 	public static void write(File file, String s) throws IOException {
 		if (file.getParent() != null) {
 			mkdirs(file.getParent());
 		}
 
 		BufferedWriter bw = new BufferedWriter(new FileWriter(file));
 
 		bw.flush();
 		bw.write(s);
 		bw.flush();
 
 		bw.close();
 	}
 
 	public static void write(String fileName, String s) throws IOException {
 		write(new File(fileName), s);
 	}
 
 	public static void write(String pathName, String fileName, String s)
 		throws IOException {
 
 		write(new File(pathName, fileName), s);
 	}
 
     public static void write(File dest, Properties props) throws IOException {
         write(dest, propertiesToString(props));             
     }
     
     public static String propertiesToString(Properties p) {
         StringBuffer sb = new StringBuffer();
 
         Enumeration enu = p.propertyNames();
 
         while (enu.hasMoreElements()) {
                 String key = (String)enu.nextElement();
 
                 sb.append(key);
                 sb.append("=");
                 sb.append(p.getProperty(key));
                 sb.append("\n");
         }
 
         return sb.toString();
 }
 
     public static void writeAsJAR(File dest, String propsFileName, Properties props) 
     	throws FileNotFoundException, IOException {
         JarOutputStream out = new JarOutputStream(new FileOutputStream(dest));
         JarEntry propertiesFile = new JarEntry(propsFileName);
         propertiesFile.setExtra(propertiesToString(props).getBytes());
         out.putNextEntry(propertiesFile);
         out.close();        
     }
 
 
 }