/*
 * Copyright (c) 2004, 2005 Kazuya Ujihara
 * 
 * This software is provided 'as-is', without any express or implied warranty. 
 * In no event will the authors be held liable for any damages arising from the use of this software.
 * 
 * Permission is granted to anyone to use this software for any purpose, 
 * including commercial applications, and to alter it and redistribute it freely, 
 * subject to the following restrictions:
 *   1. The origin of this software must not be misrepresented; 
 *      you must not claim that you wrote the original software. 
 *      If you use this software in a product, an acknowledgment 
 *      in the product documentation would be appreciated but is not required.
 *	 2. Altered source versions must be plainly marked as such, 
 *      and must not be misrepresented as being the original software.
 *	 3. This notice may not be removed or altered from any source distribution.
 */

package jp.ujihara.jsharp.io;

import System.IO.Stream;
import System.IO.SeekOrigin;

public class DotNetInputStream extends Stream
{
	protected java.io.InputStream istrm;

	public DotNetInputStream(java.io.InputStream istrm)
	{
		this.istrm = istrm;
	}

	/** @property */
	public java.io.InputStream get_JavaStream()
	{
		return istrm;
	}

	/** @property */
	public boolean get_CanRead()
	{
		return true;
	}

	/** @property */
	public boolean get_CanSeek()
	{
		return false;
	}

	/** @property */
	public boolean get_CanWrite()
	{
		return false;
	}

	/** @property */
	public long get_Length()
	{
		throw new System.NotSupportedException();
	}

	/** @property */
	public long get_Position()
	{
		throw new System.NotSupportedException();
	}

	/** @property */
	public void set_Position(long pos)
	{
		throw new System.NotSupportedException();
	}

	public void Flush()
	{
		//do nothing
	}

	public int Read(ubyte[] buffer, int offset, int count) throws System.IO.IOException
	{
		int readBytes;
		try
		{
			readBytes = istrm.read((byte[])(Object)buffer, offset, count);
		}
		catch (java.io.IOException ioe)
		{
			throw new System.IO.IOException(ioe.get_Message());
		}
		return readBytes;
	}

	public long Seek(long offset, SeekOrigin origin)
	{
		throw new System.NotSupportedException();
	}

	public void SetLength(long value)
	{
		throw new System.NotSupportedException();
	}

	public void Write(ubyte[] buffer, int offset, int count)
	{
		throw new System.NotSupportedException();
	}

	public void Close() throws System.ObjectDisposedException
	{
		try
		{
			istrm.close();
		}
		catch (java.io.IOException ioe)
		{
			throw new System.ObjectDisposedException(ioe.getMessage());
		}
	}
}