//  FilecopyBinaryKL.java  Copyright (c) 2006 Kari Laitinen

//  http://www.naturalprogramming.com

//  2006-02-22   File created.
//  2006-02-22   Last modification.

//  This program works in the same way as Filecopy.java except
//  that the given file is copied as a binary file.

//  A solution to Exercise 14-7.

import java.util.* ;
import java.io.* ;  // Classes for file handling.

class FilecopyBinaryKL
{
   public static void main( String[] not_in_use )
   {
      Scanner keyboard = new Scanner( System.in ) ;

      System.out.print( "\n This program copies text from one file"
                     + "\n to another file. Please, give the name of"
                     + "\n the file to be copied: " ) ;

      String  name_of_file_to_be_copied  =  keyboard.nextLine() ;

      System.out.print( "\n Give the name of the duplicate file: " ) ;

      String  name_of_new_duplicate_file  =  keyboard.nextLine() ;

      try
      {
         FileInputStream file_to_be_copied  =
                          new FileInputStream( name_of_file_to_be_copied ) ;

         FileOutputStream new_duplicate_file  =
                          new FileOutputStream( name_of_new_duplicate_file ) ;

         System.out.print( "\n Copying in progress ... \n" ) ;

         int  total_number_of_bytes_copied  =  0 ;

         //  If this program were used for serious file copying
         //  operations, it might be better to use a larger array
         //  (input buffer) into which bytes are read.

         byte[]  bytes_from_file  =  new  byte[ 128 ] ;

         int number_of_bytes_read  ;

         while (( number_of_bytes_read  =
                    file_to_be_copied.read( bytes_from_file ))  >  0 )
         {
            new_duplicate_file.write( bytes_from_file, 0,
                                      number_of_bytes_read ) ;

            total_number_of_bytes_copied  +=  number_of_bytes_read ;
         }

         System.out.print( "\n Copying ready. "  +  total_number_of_bytes_copied
                         + " bytes were copied. \n" ) ;

         file_to_be_copied.close() ;
         new_duplicate_file.close() ;
      }
      catch ( FileNotFoundException caught_file_not_found_exception )
      {
         System.out.print( "\n Cannot open "  +  name_of_file_to_be_copied ) ;
      }
      catch ( IOException  caught_io_exception )
      {
         System.out.print( "\n File error. Probably cannot write to "
                        +  name_of_new_duplicate_file ) ;
      }
   }
}