// -*- mode:C++; tab-width:2; c-basic-offset:2; indent-tabs-mode:nil -*-
//
// Copyright (C) 2000-2005 by Roger Rene Kommer / artefaktur, Kassel, Germany.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public License (LGPL).
//
//
// 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
// License ACDK-FreeLicense document enclosed in the distribution
// for more for more details.
// This file is part of the Artefaktur Component Development Kit:
// ACDK
//
// Please refer to
// - http://www.acdk.de
// - http://www.artefaktur.com
// - http://acdk.sourceforge.net
// for more information.
//
// $Header: /cvsroot/acdk/acdk/acdk_core/src/acdk/io/CharToByteReader.h,v 1.7 2005/03/01 10:12:47 kommer Exp $
#ifndef acdk_io_CharToByteReader_h
#define acdk_io_CharToByteReader_h
#include "CharReader.h"
#include "AbstractReader.h"
namespace acdk {
namespace io {
/**
helper for CharToByteReader.
@author Roger Rene Kommer (mailto:kommer@artefaktur.com)
@version $Revision: 1.7 $
@date $Date: 2005/03/01 10:12:47 $
*/
foreign
class ACDK_CORE_PUBLIC LittleBytesWriter
: extends acdk::lang::Object
, implements Writer
{
byte _buffer[32];
int _writePos;
int _readPos;
public:
LittleBytesWriter()
: _writePos(0)
, _readPos(0)
{
}
virtual void flush() {}
virtual void close() {}
virtual void write(byte c)
{
_buffer[_writePos++] = c;
}
virtual void write(IN(RbyteArray) ch, int offset = 0, int len = -1) { Writer::write(ch, offset, len); }
foreign virtual void write(const byte* cstr, int offset, int len) { Writer::write(cstr, offset, len); }
int _getAvailable() { return _writePos - _readPos; }
int getByte()
{
if (_getAvailable() == 0)
return -1;
return _buffer[_readPos++];
}
void _reset() { _writePos = _readPos = 0; }
};
ACDK_DECL_CLASS(CharToByteReader);
/**
Reads from a CharReader and encodes it to a Reader
@author Roger Rene Kommer (mailto:kommer@artefaktur.com)
@version $Revision: 1.7 $
@date $Date: 2005/03/01 10:12:47 $
*/
class ACDK_CORE_PUBLIC CharToByteReader
: extends AbstractReader
{
ACDK_WITH_METAINFO(CharToByteReader)
public:
RCharReader _cin;
acdk::locale::REncoder _encoder;
foreign LittleBytesWriter _buf;
int _maxChars;
CharToByteReader(IN(RCharReader) cin, IN(acdk::locale::REncoder) encoder = Nil, IN(acdk::lang::Object) iolock = Nil)
: AbstractReader(iolock)
, _cin(cin)
, _encoder(encoder)
, _maxChars(0)
{
if (_encoder == Nil)
_encoder = acdk::locale::Encoding::getEncoding()->getEncoder();
_maxChars = (int)_encoder->getEncoding()->maxBytesPerChar();
}
virtual int available() { return 0; }
virtual void reset() {}
virtual jlong seek(SeekPos seekrel, jlong seekpos) { return -1; }
virtual jlong skip(jlong n) { return -1; }
virtual int read()
{
if (_buf._getAvailable() > 0)
return _buf.getByte();
_buf._reset();
int nc = _cin->readChar();
if (nc == -1)
return -1;
_encoder->encode(&_buf, nc);
return _buf.getByte();
}
int read(IN(RbyteArray) buffer, int offset = 0, int len = -1) { return AbstractReader::read(buffer, offset, len); }
foreign int read(byte* buffer, int offset, int len) { return AbstractReader::read(buffer, offset, len); }
};
} // namespace io
} // namespace acdk
#endif //acdk_io_CharToByteReader_h
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