ExternalReadAppendStream.h

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/*
 * ExternalReadAppendStream.h
 *
 * Smalltalk like class library for C++
 * External read and append stream. Header.
 *
 * Copyright (c) 2004 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
 */
#ifndef __EXTERNALREADAPPENDSTREAM_H
#define __EXTERNALREADAPPENDSTREAM_H

#include <stlib/ExternalReadStream.h>

namespace Core {

class IOAccessor;
class ExternalWriteStream;
class String;

class ExternalReadAppendStream : public ExternalReadStream
{
  protected:
    ExternalWriteStream *writeStream;

  public:
    ExternalReadAppendStream(IOAccessor *accessor);

    /* Class-accessing protocol */
    virtual String *className(void) const;

    /* Accessing protocol */
    virtual void commit(void);
    virtual void flush(void);
    virtual void nextPut(Object *object);
    virtual void nextPut(const char object);
    virtual void nextPutAll(const Collection *collection);
    virtual void nextPutAll(const char *string);
    virtual void nextPutAll(const SequenceableCollection *collection,
                            long size, long startIndex);

    /* Positioning protocol */
    virtual void position(long position);
    virtual long writePosition(void);

    /* Status protocol */
    virtual void close(void);

    /* Testing protocol */
    virtual bool isWritable(void);
};

};

#endif /* __EXTERNALREADAPPENDSTREAM_H */

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