import java.io.FileReader;
import java.io.PrintStream;

/**
 *  Class for encoding entire files.
 *    @author Dave Reed
 *    @version 3/22/08
 */
public class Encrypt {
	/**
	 * Constructs an Encrypt object.
	 */
	public Encrypt() {
		// currently, does nothing
	}
	
	/**
	 * Encodes an entire file using a Cipher object.
	 *   @param sourceFile the input file to be encoded
	 *   @param codedFile the encoded output file
	 */
	public void encodeFile(String sourceFile, String codedFile) {
	    Cipher coder = new Cipher();
	    
	    try {
	        FileReader infile = new FileReader(sourceFile);
	        PrintStream outfile = new PrintStream(codedFile);
	        while (infile.ready()) {
	            char ch = (char)infile.read();
	            outfile.print( coder.encode(ch) );
	        }
	        infile.close();
	        outfile.close();
	    }
	    catch (java.io.IOException e) {
	        System.out.println("FILE NOT FOUND");
	    }  
	}
	
	/**
	 * Decodes an entire file using a Cipher object.
	 *   @param codedFile the input file to be decoded
	 *   @param sourceFile the decoded output file
	 */
	public void decodeFile(String codedFile, String sourceFile) {
	    Cipher coder = new Cipher();
	    
	    try {
	        FileReader infile = new FileReader(codedFile);
	        PrintStream outfile = new PrintStream(sourceFile);
	        while (infile.ready()) {
	            char ch = (char)infile.read();
	            outfile.print( coder.decode(ch) );
	        }
	        infile.close();
	        outfile.close();
	    }
	    catch (java.io.IOException e) {
	        System.out.println("FILE NOT FOUND");
	    }  
	}
}