/**
*  EXAMPLE OF USING BITWRITER
**/

package edu.cmu.cs211.compression.io;

import java.io.IOException;

/**
 * This implementation of BitWriter prints to standard out
 */
public class DebugWriter implements BitWriter {
	private int numWritten = 0;


	public void writeBit (int nextBit)
	{
		if (nextBit != 1 && nextBit != 0)
			throw new IllegalArgumentException ("A bit must be 0 or 1");

		System.out.print (nextBit + " ");
		if (++numWritten % 16 == 0)
			System.out.println ();
	}

	public void writeBits (int nextBits, int num)
	{
		if (num < 0 || num > 32)
			throw new IllegalArgumentException ("Number of bits is out of range");

		for (int i = num - 1; i >= 0; i--)
			writeBit ((nextBits & (1 << i)) >>> i);
	}

	public void writeByte (byte nextByte)
	{
		System.out.print ("" + convertByteToHex (nextByte) + " ");

		if (++numWritten % 16 == 0)
			System.out.println ();
	}

	public void writeBytes (byte [] nextBytes)
	{
		for (byte element : nextBytes)
	        writeByte (element);
	}
	
	public void writeInt (int v) throws IOException
	{
		System.out.println();
		System.out.println("Int: " + v + " = " + Integer.toHexString(v));
	}
	
	public void flush ()
	{
		System.out.println ();
	}

	private String convertByteToHex (byte b)
	{
		return Integer.toHexString ((b) & 0xff);
	}
}