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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef CSV_BSTREAM_HXX
#define CSV_BSTREAM_HXX
#include <string.h>
#include <cosv/string.hxx>
namespace csv
{
enum seek_dir
{
beg = 0,
cur = 1,
end = 2
};
class bistream
{
public:
// LIFECYCLE
virtual ~bistream() {}
// OPERATIONS
/// @return Number of actually read bytes.
uintt read(
void * out_pDest,
uintt i_nNrofBytes);
// INQUIRY
/** @return True, if already one try to read had failed.
There is no guarantee, that it returns true, if end of data
is just reached.
Though it will return false, if there is still somemething
to read.
*/
bool eod() const;
private:
virtual uintt do_read(
void * out_pDest,
uintt i_nNrofBytes) = 0;
virtual bool inq_eod() const = 0;
};
class bostream
{
public:
// LIFECYCLE
virtual ~bostream() {}
// OPERATIONS
/// @return Number of actually written bytes.
uintt write(
const void * i_pSrc,
uintt i_nNrofBytes);
/// @return Number of actually written bytes.
uintt write(
const char * i_pSrc );
/// @return Number of actually written bytes.
uintt write(
const String & i_pSrc );
private:
virtual uintt do_write(
const void * i_pSrc,
uintt i_nNrofBytes) = 0;
};
class bstream : public bistream,
public bostream
{
public:
uintt seek(
intt i_nDistanceFromBegin,
seek_dir i_eStartPoint = ::csv::beg );
uintt position() const;
private:
virtual uintt do_seek(
intt i_nDistance,
seek_dir i_eStartPoint = ::csv::beg ) = 0;
virtual uintt inq_position() const = 0;
};
// IMPLEMENTATION
inline uintt
bistream::read( void * o_pDest,
uintt i_nNrofBytes)
{ return do_read(o_pDest, i_nNrofBytes); }
inline bool
bistream::eod() const
{ return inq_eod(); }
inline uintt
bostream::write( const void * i_pSrc,
uintt i_nNrofBytes)
{ return do_write( i_pSrc, i_nNrofBytes ); }
inline uintt
bostream::write( const char * i_sSrc )
{ return write( i_sSrc, strlen(i_sSrc) ); }
inline uintt
bostream::write( const String & i_sSrc )
{ return write( i_sSrc.c_str(), i_sSrc.length() ); }
inline uintt
bstream::seek( intt i_nDistance,
seek_dir i_eStartPoint )
{ return do_seek( i_nDistance, i_eStartPoint ); }
inline uintt
bstream::position() const
{ return inq_position(); }
} // namespace csv
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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