ByteStreamEncoder.cc

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/*
 * ByteStreamEncoder.cc
 *
 * Smalltalk like class library for C++
 * 8-bit encoding (ISO 8859 or so) translator.
 *
 * Copyright (c) 2005 Milan Cermak
 */
/*
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
#include <stlib/ByteStreamEncoder.h>
#include <stlib/Character.h>
#include <stlib/CharacterEncoder.h>
#include <stlib/Integer.h>
#include <stlib/Stream.h>
#include <stlib/String.h>

namespace Core {

ByteStreamEncoder::ByteStreamEncoder(CharacterEncoder *encoder)
{
    _encoder = encoder;
}

/* Class-accessing protocol */
String *ByteStreamEncoder::className(void) const
{
    return new String("ByteStreamEncoder");
}

/* Accessing protocol */
Character *ByteStreamEncoder::decodeFrom(Stream *stream)
{
    Object *object = stream->next();
    if (object == nil) {
        /* There are no more items on the stream */
        return nil;
    }

    Integer *item = dynamic_cast<Integer *>(object);
    if (item == nil) {
        /* Read object is not an Integer instance => the stream is not binary */
        error(new String("Incompatible stream."), new String(__PRETTY_FUNCTION__), stream);
    }
    return _encoder->decode(item);
}

void ByteStreamEncoder::encodeTo(Stream *stream, Character *character)
{
    stream->nextPut(_encoder->encode(character));
}

}; /* namespace Core */

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