/*******************************************************************************
 *  Copyright (c) 2010 Association for Decentralized Information Management in
 *  Industry THTH ry.
 *  All rights reserved. This program and the accompanying materials
 *  are made available under the terms of the Eclipse Public License v1.0
 *  which accompanies this distribution, and is available at
 *  http://www.eclipse.org/legal/epl-v10.html
 *
 *  Contributors:
 *      VTT Technical Research Centre of Finland - initial API and implementation
 *******************************************************************************/
package org.simantics.databoard.util.binary;

import java.io.IOException;
import java.io.OutputStream;
import java.nio.ByteBuffer;

public class OutputStreamWriteable implements BinaryWriteable {

	OutputStream out;
		
	public OutputStreamWriteable(OutputStream out)
	{
		if (out==null) throw new IllegalArgumentException("null arg");
		this.out = out;
	}
	
	public OutputStream getStream()
	{
		return out;
	}

	void _put(int value)
	throws IOException
	{
		out.write(value);
	}
	
	@Override
	public void write(int b) throws IOException {
		_put(b);
	}
	
	@Override
	public void writeByte(int b) throws IOException {
		_put(b);
	}	
	@Override
	public void writeBoolean(boolean v) throws IOException {
		_put( v ? 1 : 0);
	}

	@Override
	public void writeFully(ByteBuffer src) throws IOException {
		if (src.hasArray()) {
			byte array[] = src.array();
			write(array, src.position(), src.remaining());
			src.position(src.limit()); 
		} else 
			for (;src.hasRemaining();)
				_put(src.get());
	}

	@Override
	public void writeFully(ByteBuffer src, int length) throws IOException {		
		if (src.hasArray()) {
			byte array[] = src.array();
			write(array, src.position(), length);
			src.position(length); 
		} else {
			for (int i=0; i<length; i++)
				_put(src.get());
		}
	}

	@Override
	public void write(byte[] src, int offset, int length) throws IOException {
		out.write(src, offset, length);
	}

	@Override
	public void write(byte[] src) throws IOException {
		out.write(src);
	}

	@Override
	public void writeDouble(double value) throws IOException {
		writeLong(Double.doubleToLongBits(value));
	}

	@Override
	public void writeFloat(float value) throws IOException {
		writeInt(Float.floatToIntBits(value));
	}

	@Override
	public void writeInt(int value) throws IOException {
		_put(value >> 24);
		_put(value >> 16);
		_put(value >> 8);
		_put(value);
	}

	@Override
	public void writeLong(long value) throws IOException {
		_put((int) (value >> 56));
		_put((int) (value >> 48));
		_put((int) (value >> 40));
		_put((int) (value >> 32));
		_put((int) (value >> 24));
		_put((int) (value >> 16));
		_put((int) (value >> 8));
		_put((int) (value));
	}

	@Override
	public void writeShort(int value) throws IOException {
		_put(value >> 8);
		_put(value);
	}
	
	@Override
	public void writeChar(int value) throws IOException {
		_put(value >> 8);
		_put(value);
	}	
	
	@Override
	public void writeBytes(String s) throws IOException {
		int len = s.length();
		for (int i = 0 ; i < len ; i++) {
		    _put((byte)s.charAt(i));
		}
	}
	
	@Override
	public void writeChars(String s) throws IOException {
        int len = s.length();
        for (int i = 0 ; i < len ; i++) {
            int v = s.charAt(i);
            _put((v >>> 8) & 0xFF); 
            _put((v >>> 0) & 0xFF); 
        }
	}
	
	@Override
	public void writeUTF(String s) throws IOException {
		int len = UTF8.getModifiedUTF8EncodingByteLength(s);
		writeShort(len);
		UTF8.writeModifiedUTF(this, s);
	}
	
	@Override
	public void flush() throws IOException {
		out.flush();
	}

}