diff options
Diffstat (limited to 'cosv/inc/cosv/bstream.hxx')
| -rw-r--r-- | cosv/inc/cosv/bstream.hxx | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/cosv/inc/cosv/bstream.hxx b/cosv/inc/cosv/bstream.hxx new file mode 100644 index 000000000000..55f04a0a9c9d --- /dev/null +++ b/cosv/inc/cosv/bstream.hxx @@ -0,0 +1,184 @@ +/************************************************************************* + * + * $RCSfile: bstream.hxx,v $ + * + * $Revision: 1.1.1.1 $ + * + * last change: $Author: np $ $Date: 2002-03-08 14:25:38 $ + * + * The Contents of this file are made available subject to the terms of + * either of the following licenses + * + * - GNU Lesser General Public License Version 2.1 + * - Sun Industry Standards Source License Version 1.1 + * + * Sun Microsystems Inc., October, 2000 + * + * GNU Lesser General Public License Version 2.1 + * ============================================= + * Copyright 2000 by Sun Microsystems, Inc. + * 901 San Antonio Road, Palo Alto, CA 94303, USA + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License version 2.1, as published by the Free Software Foundation. + * + * 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 + * + * + * Sun Industry Standards Source License Version 1.1 + * ================================================= + * The contents of this file are subject to the Sun Industry Standards + * Source 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.openoffice.org/license.html. + * + * Software provided under this License is provided on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, + * WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS, + * MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING. + * See the License for the specific provisions governing your rights and + * obligations concerning the Software. + * + * The Initial Developer of the Original Code is: Sun Microsystems, Inc. + * + * Copyright: 2000 by Sun Microsystems, Inc. + * + * All Rights Reserved. + * + * Contributor(s): _______________________________________ + * + * + ************************************************************************/ + +#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 + |