src/java/org/apache/lenya/util/FileUtil.java

/*
<License>
 * =======================================================================
 * Copyright (c) 2000 wyona. All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 
 * 2. 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.
 * 
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by wyona (http://www.wyona.org)"
 * 
 * 4. The name "wyona" must not be used to endorse or promote products
 *    derived from this software without prior written permission.
 *    For written permission , please contact contact@wyona.org
 * 
 * 5. Products derived from this software may not be called "wyona"
 *    nor may "wyona" appear in their names without prior written
 *    permission of wyona. 
 * 
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by wyona (http://www.wyona.org)"
 * 
 * THIS SOFTWARE IS PROVIDED BY wyona "AS IS" WITHOUT ANY WARRANTY 
 * EXPRESS OR IMPLIED, INCLUDING THE WARRANTY OF NON-INFRINGEMENT AND
 * THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE. wyona WILL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY YOU AS
 * A RESULT OF USING THIS SOFTWARE. IN NO EVENT WILL wyona BE LIABLE FOR
 * ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR LOST PROFITS EVEN
 * IF wyona HAS BEEN ADVISED OF THE POSSIBILITY OF THEIR OCCURRENCE.
 * wyona WILL NOT BE LIABLE FOR ANY THIRD PARTY CLAIMS AGAINST YOU.
 * =======================================================================
</License>
 */

package org.wyona.util;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.IOException;
import java.util.StringTokenizer;

import org.apache.log4j.Category;

/**
 * @author Michael Wechner
 * @version 1.11.14
 */
public class FileUtil{
  static Category log=Category.getInstance(FileUtil.class);
/**
 *
 */
     public static void main(String[] args)
          {
          if(args.length == 0){
            System.err.println("Usage: java "+new FileUtil().getClass().getName());
            return;
            }

          if(args[0].equals("--copy")){
            if(args.length != 3){
              System.err.println("Usage: --copy source destination");
              return;
              }
            try{
              System.err.println("cp "+args[1]+" "+args[2]);
              copy(args[1],args[2]);
              }
            catch(FileNotFoundException e){
              System.err.println(e);
              }
            catch(IOException e){
              System.err.println(e);
              }
            return;
            }
          if(args[0].equals("--concatPath")){
            //File file=org.wyona.util.FileUtil.file(args[0],args[1]);
            File file=org.wyona.util.FileUtil.file("/root/temp/jpf-1.9/java/wyona/x/xps/samples/invoices/invoices","../addresses/wyona.xml");
            System.out.println(file.getAbsolutePath());
            }
          else{
            }
          }
/**
 * Copying a file
 */
    public static void copy(String source_name,String destination_name) throws FileNotFoundException, IOException{
      InputStream source=new FileInputStream(source_name);
      File destination_file=new File(destination_name);
      File parent=new File(destination_file.getParent());
      if(!parent.exists()){
        parent.mkdirs();
        log.warn("Directory has been created: "+parent.getAbsolutePath());
        }
      OutputStream destination=new FileOutputStream(destination_name);
      byte[] bytes_buffer=new byte[1024];
      int bytes_read;
      while((bytes_read=source.read(bytes_buffer)) >= 0){
        destination.write(bytes_buffer,0,bytes_read);
        }
      }
/**
 * Returns a file by specifying an absolute directory name and
 * a relative file name
 */
    public static File file(String absoluteDir,String relativeFile)
          {
          File file=new File(fileName(absoluteDir,relativeFile));
          return file;
          }
/**
 * Returns an absolute file name by specifying an absolute directory name and
 * a relative file name
 */
     public static String fileName(String absoluteDir,String relativeFile)
          {
          String fileName=null;
          String newAbsoluteDir=null;

          if(!(absoluteDir.charAt(absoluteDir.length()-1) == '/'))
            {
            newAbsoluteDir=absoluteDir+"/";
            }
          else
            {
            newAbsoluteDir=absoluteDir;
            }
          
          if(relativeFile.indexOf("../") == 0)
            {
            StringTokenizer token=new StringTokenizer(newAbsoluteDir,"/");
            newAbsoluteDir="/";
            int numberOfTokens=token.countTokens();
            for(int i=0;i<numberOfTokens-1;i++)
                 {
                 newAbsoluteDir=newAbsoluteDir+token.nextToken()+"/";
                 }
            String newRelativeFile=relativeFile.substring(3,relativeFile.length());
            fileName=fileName(newAbsoluteDir,newRelativeFile);
            }
          else if(relativeFile.indexOf("./") == 0)
            {
            fileName=newAbsoluteDir+relativeFile.substring(2,relativeFile.length());
            }
          else
            {
            fileName=newAbsoluteDir+relativeFile;
            }
          return fileName;
          }
/**
 * Returns an absolute file name by specifying an absolute directory name and
 * a relative file name
 */
     public static String concat(String absoluteFile,String relativeFile)
          {
          File file=new File(absoluteFile);
          if(file.isFile())
            {
            return fileName(file.getParent(),relativeFile);
            }
          return fileName(absoluteFile,relativeFile);
          }
     }