/*  Copy.java
 *
 *  Bruce M. Bolden
 *  October 21 1997
 *  Updated:  February 18, 1998
 *  http://www.cs.uidaho.edu/~bruceb/
 *
 */

/**  Run Times (PowerMac 225 MHz 604e<br>
In FileReaderWriter():     <br>
    Copy time: 0.779       <br>
In FileStreamReadWrite():  <br>
    Copy time: 1.534       <br>
In FileStreamInputPrint(): <br>
    Copy time: 0.841       <br>
In BufferedFileStreamReadPrint(): <br>
    Copy time: 0.262       <br>
 */

import java.io.*;

public class Copy {

    /**  Input file name.  
     */
    static String inFileName = "test.in";
    static long tStart;
    static long tEnd;
    static double dT;

    /**  Copy a file using four different methods.
     */
    public static void main(String args[])
    {
        FileReaderWriter();
        
        FileStreamReadWrite();
        
        FileStreamInputPrint();
        
        BufferedFileStreamReadPrint();
        
        System.out.println( "Done!" );
    }


    /**  Copy using File Reader/Writer classes.
     */
    public static void FileReaderWriter()
    {
        String outFileName = "test.out";
        
        FileReader fR;
        FileWriter fW;
        
        System.out.println( "In FileReaderWriter():" );
        
        tStart = System.currentTimeMillis();
        
        try {
           fR = new FileReader( inFileName  );
           fW = new FileWriter( outFileName );
           
           int i = 0;

           while( i != -1 )
           {
              i = fR.read();
              if( i != -1 )          //  remove this---see what happens
                  fW.write( i );
           }

           fW.close();
           fR.close();
        }
        catch (java.io.IOException ioe) {
            System.out.println( "IO error: " + ioe );
        }

        tEnd = System.currentTimeMillis();
        dT = (tEnd - tStart) / 1000.0;
        System.out.println( "\tCopy time: " + dT );
    }


    /**  Copy using FileInput/Output stream classes.
     */
    public static void FileStreamReadWrite()
    {
        String outFileName = "test2.out";
        
        FileInputStream fIS;
        FileOutputStream fOS; 

        System.out.println( "In FileStreamReadWrite():" );

        tStart = System.currentTimeMillis();

        try {
           fIS = new FileInputStream(  inFileName  );
           fOS = new FileOutputStream( outFileName );

           int i = 0;

           while( i != -1 )
           {
              i = fIS.read();
              if( i != -1 )          //  remove this---see what happens
                  fOS.write( i );
           }
           
           fIS.close();
           fOS.close();
        }
        catch (java.io.IOException ioe) {
            System.out.println( "IO error: " + ioe );
        }
        
        tEnd = System.currentTimeMillis();
        dT = (tEnd - tStart) / 1000.0;
        System.out.println( "\tCopy time: " + dT );
    }


    /**  Copy using Buffered Reader/Writer class.
     */
    public static void BufferedFileStreamReadPrint()
    {
        String outFileName = "test3.out";
        
        FileReader fIS;
        FileWriter fW;
        
        System.out.println( "In BufferedFileStreamReadPrint():" );

        tStart = System.currentTimeMillis();
        
        try {
           fIS = new FileReader( inFileName  );
           BufferedReader inStream = new BufferedReader( fIS );
           fW = new FileWriter(outFileName);
           PrintWriter outStream = new PrintWriter(new BufferedWriter(fW));

           //  url.openStream
          
           String line;
              //  
           while( (line = inStream.readLine()) != null )
           {
              outStream.println( line );
           }
           
           inStream.close();
           outStream.close();
        }
        catch (java.io.IOException ioe) {
            System.out.println( "IO error: " + ioe );
        }
        
        tEnd = System.currentTimeMillis();
        dT = (tEnd - tStart) / 1000.0;
        System.out.println( "\tCopy time: " + dT );
    }
    
    
    /**  Uses old style FileInput/Output Stream classes.
     */
    public static void FileStreamInputPrint()
    {
        String outFileName = "test4.out";
        
        FileInputStream fIS;
        FileOutputStream fOS;

        System.out.println( "In FileStreamInputPrint():" );
        
        tStart = System.currentTimeMillis();
        
        try {
           fIS = new FileInputStream(  inFileName  );
           fOS = new FileOutputStream( outFileName );
           DataInputStream inStream = new DataInputStream( fIS );
               //  PrintStream has been deprecated
           PrintStream outStream = new PrintStream( fOS );
           
           String line;
              //  readLine has been deprecated
           while( (line = inStream.readLine()) != null )
           {
              outStream.println( line );
           }
           
           inStream.close();
           outStream.close();
        }
        catch (java.io.IOException ioe) {
            System.out.println( "IO error: " + ioe );
        }
        
        tEnd = System.currentTimeMillis();
        dT = (tEnd - tStart) / 1000.0;
        System.out.println( "\tCopy time: " + dT );
    }
    
    /*
    WriteInBinOctHex();
    void WriteInBinOctHex()
    {
        int i;
        
        for( i = 0 ; i <= 16 ; i++ )
        {
            System.out.print( i + "   " );
            System.out.print( Integer.toString(i,2) + "   " );
            System.out.print( Integer.toString(i,8) + "   " );
            System.out.println( Integer.toString(i,16) );
        }
    }
    */
}