/******************************************************************************

  * CopyFile.java - Copy a file

  * 

  * PicMan - The BuckoSoft Picture Manager in Java

  * Copyright(c) 2009 - Dick Balaska

  * 

  */

 package com.buckosoft.PicMan.business.util;

 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 java.text.SimpleDateFormat;

 import java.util.Date;

 import com.buckosoft.PicMan.business.PicManFacade;

 /** Copy a file from point a to point b

  * @author Dick Balaska

  * @since 2009/07/17

  * @see <a href="http://cvs.buckosoft.com/Projects/java/PicMan/PicMan/src/com/buckosoft/PicMan/business/util/CopyFile.java">CopyFile.java</a>

  * @see com.buckosoft.PicMan.business.mosaic.engine

  */

 public class CopyFile {

         private static SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");

         public static void makeBackup(PicManFacade pmf, File file) {

                         String parent = file.getParent();

                         parent += ("/save");

                         File saveDir = new File(parent);

                         if (!saveDir.exists()) {

                                 if (!saveDir.mkdir()) {

                                         Exception e1 = new Exception("Can't create '" + parent + "'");

                                         pmf.addError(e1);

                                         return;

                                 }

                         }

                         if (!saveDir.isDirectory()) {

                                 Exception e1 = new Exception("backup dir exists and is not a dir '" + parent + "'");

                                 pmf.addError(e1);

                                 return;

                         }

                         File backupFile = new File(saveDir, file.getName());

                         if (backupFile.exists()) {

                                 StringBuffer sb = new StringBuffer();

                                 sb.append(file.getName().substring(0, file.getName().length() - 4));

                                 sb.append("_");

                                 Date d = new Date(backupFile.lastModified());

                                 String t = sdf.format(d);

                                 int dd = 99999999 - Integer.parseInt(t);

                                 sb.append("" + dd);

                                 sb.append(".jpg");

                                 File backupFileRenamed = new File(saveDir, sb.toString());

                                 if (!backupFile.renameTo(backupFileRenamed)) {

                                         String es = "Failed to rename backup from '" + file.getName() + "' to '" + sb.toString() + "'";

                                         Exception e2 = new Exception(es);

                                         //logger.error(e2);

                                         pmf.addError(e2);

                                         //return;

                                 }

                         }

                         try {

                                 CopyFile.copyFile(file, backupFile, null);

                         } catch (IOException e) {

                                 Exception e3 = new Exception("Failed to copy file '" + file.getName() + "' to '" + backupFile.getName() + "'", e);

                                 pmf.addError(e3);

                         }

         }

         public static void copyFile(File source, File dest, byte[] buf) throws IOException {

                 if(!dest.exists()) {

                         dest.createNewFile();

                 }

                 if (buf == null)

                         buf = new byte[4096];

                 InputStream in = null;

                 OutputStream out = null;

                 try {

                         in = new FileInputStream(source);

                         out = new FileOutputStream(dest);

                         // Transfer bytes from in to out

                         int len;

                         while ((len = in.read(buf)) > 0) {

                                 out.write(buf, 0, len);

                         }

                         in.close();

                         out.close();

                         dest.setLastModified(source.lastModified());

                 }

                 finally {

                         if(in != null) {

                                 in.close();

                         }

                         if(out != null) {

                                 out.close();

                         }

                 }

         }        

 }