using System;
using System.IO;
/*
 * Copyright 2007 Thomas Bickel
 *
 * The contents of this file are subject to the Mozilla Public License Version 1.1
 * (the "License"); you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the License.
 *
 * The Original Code is 'iText, a free JAVA-PDF library'.
 *
 * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
 * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
 * All Rights Reserved.
 * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
 * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
 *
 * Contributor(s): all the names of the contributors are added in the source code
 * where applicable.
 *
 * Alternatively, the contents of this file may be used under the terms of the
 * LGPL license (the ?GNU LIBRARY GENERAL PUBLIC LICENSE?), in which case the
 * provisions of LGPL are applicable instead of those above.  If you wish to
 * allow use of your version of this file only under the terms of the LGPL
 * License and not to allow others to use your version of this file under
 * the MPL, indicate your decision by deleting the provisions above and
 * replace them with the notice and other provisions required by the LGPL.
 * If you do not delete the provisions above, a recipient may use your version
 * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the MPL as stated above or under the terms of the GNU
 * Library General Public License as published by the Free Software Foundation;
 * either version 2 of the License, or any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
 * details.
 *
 * If you didn't download this code from the following link, you should check if
 * you aren't using an obsolete version:
 * http://www.lowagie.com/iText/
 */

namespace iTextSharp.text.rtf.document.output {

    /**
    * The RtfNilOutputStream is a dummy output stream that sends all
    * bytes to the big byte bucket in the sky. It is used to improve
    * speed in those situations where processing is required, but
    * the results are not needed.
    * 
    * @version $Id: RtfNilOutputStream.cs,v 1.2 2008/05/16 19:30:53 psoares33 Exp $
    * @author Thomas Bickel (tmb99@inode.at)
    * @author Mark Hall (Mark.Hall@mail.room3b.eu)
    */
    public class RtfNilOutputStream	: Stream {
        private long size = 0;

        public RtfNilOutputStream() {
        }
    
        public override bool CanRead {
            get {
                return false;
            }
        }
    
        public override bool CanSeek {
            get {
                return false;
            }
        }
    
        public override bool CanWrite {
            get {
                return true;
            }
        }
    
        public override long Length {
            get {
                throw new NotSupportedException();
            }
        }
    
        public override long Position {
            get {
                throw new NotSupportedException();
            }
            set {
                throw new NotSupportedException();
            }
        }
    
        public override void Close() {
        }
    
        public override void Flush() {
        }
    
        public override int Read(byte[] buffer, int offset, int count) {
            throw new NotSupportedException();
        }
    
        public override long Seek(long offset, SeekOrigin origin) {
            throw new NotSupportedException();
        }
    
        public override void SetLength(long value) {
            throw new NotSupportedException();
        }
    
        public override void Write(byte[] src, int off, int len) {
            if(src == null) throw(new ArgumentNullException());
            if((off < 0) || (off > src.Length) || (len < 0) || ((off + len) > src.Length) || ((off + len) < 0)) throw new IndexOutOfRangeException();

            size += len;
        }
    
        public override void WriteByte(byte value) {
            ++size;
        }
    
        /**
        * Returns the number of bytes that have been written to this buffer so far.
        * 
        * @return number of bytes written to this buffer
        */
        public long GetSize() {
            return(size);
        }
    }
}