127 lines
3.5 KiB
C++
127 lines
3.5 KiB
C++
/*************************************************************************
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* $RCSfile: mbstream.cxx,v $
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*
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* $Revision: 1.2 $
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*
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* last change: $Author: rt $ $Date: 2005-09-08 08:06:33 $
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*
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* The Contents of this file are made available subject to
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* the terms of GNU Lesser General Public License Version 2.1.
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*
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*
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* GNU Lesser General Public License Version 2.1
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* =============================================
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* Copyright 2005 by Sun Microsystems, Inc.
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* 901 San Antonio Road, Palo Alto, CA 94303, USA
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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************************************************************************/
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#include <precomp.h>
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#include <cosv/mbstream.hxx>
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// NOT FULLY DECLARED SERVICES
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#include <string.h>
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namespace csv
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{
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mbstream::mbstream( uintt i_nSize )
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: dpOwnedMemorySpace( new char[i_nSize+1] ),
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nSize( i_nSize ),
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nCurPosition( 0 )
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{
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dpOwnedMemorySpace[i_nSize] = '\0';
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}
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mbstream::~mbstream()
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{
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delete [] dpOwnedMemorySpace;
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}
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void
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mbstream::resize( uintt i_nSize )
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{
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DYN char * pNew = new char[i_nSize];
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memcpy( pNew, dpOwnedMemorySpace, min(i_nSize,nSize) );
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delete [] dpOwnedMemorySpace;
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dpOwnedMemorySpace = pNew;
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nSize = i_nSize;
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}
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uintt
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mbstream::do_read( void * out_pDest,
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uintt i_nNrofBytes )
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{
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uintt ret = min( i_nNrofBytes, nSize - nCurPosition );
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memcpy( out_pDest, dpOwnedMemorySpace, ret );
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nCurPosition += ret;
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return ret;
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}
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bool
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mbstream::inq_eod() const
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{
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return nCurPosition == nSize;
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}
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uintt
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mbstream::do_write( const void * i_pSrc,
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uintt i_nNrofBytes )
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{
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resize( max( 3 * (nSize+1) / 2, nCurPosition + i_nNrofBytes) );
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memcpy( dpOwnedMemorySpace+nCurPosition, i_pSrc, i_nNrofBytes );
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nCurPosition += i_nNrofBytes;
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return i_nNrofBytes;
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}
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uintt
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mbstream::do_seek( intt i_nDistance,
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seek_dir i_eStartPoint )
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{
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switch ( i_eStartPoint )
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{
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case beg: if ( uintt(i_nDistance) < nSize )
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nCurPosition = uintt(i_nDistance);
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break;
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case cur: if ( i_nDistance < 0
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? uintt(-i_nDistance) <= nCurPosition
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: uintt(i_nDistance) + nCurPosition < nSize )
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nCurPosition = uintt( intt(nCurPosition) + i_nDistance );
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break;
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case end: if ( i_nDistance < 0
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AND uintt(-i_nDistance) < nSize - 1 )
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nCurPosition = uintt( intt(nSize) - 1 + i_nDistance );
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break;
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}
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return position();
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}
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uintt
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mbstream::inq_position() const
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{
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return nCurPosition;
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}
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} // namespace csv
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