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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.
*
************************************************************************/
#include <precomp.h>
#include <tools/tkpchars.hxx>
// NOT FULLY DECLARED SERVICES
#include <cosv/bstream.hxx>
#include <cosv/x.hxx>
CharacterSource::CharacterSource()
: dpSource(new char[2]),
nSourceSize(0),
nCurPos(0),
nLastCut(0),
nLastTokenStart(0),
cCharAtLastCut(0)
{
dpSource[nSourceSize] = NULCH;
dpSource[nSourceSize+1] = NULCH;
}
CharacterSource::~CharacterSource()
{
delete [] dpSource;
}
void
CharacterSource::LoadText(csv::bstream & io_rSource)
{
if (dpSource != 0)
delete [] dpSource;
io_rSource.seek(0, csv::end);
nSourceSize = intt(io_rSource.position());
io_rSource.seek(0);
dpSource = new char[nSourceSize+1];
intt nCount = (intt) io_rSource.read(dpSource,nSourceSize);
if (nCount != nSourceSize)
throw csv::X_Default("IO-Error: Could not load file completely.");
dpSource[nSourceSize] = NULCH;
BeginSource();
}
/// KORR_FUTURE: So far, this works only when tokens do not cross inserted text boundaries.
void
CharacterSource::InsertTextAtCurPos( const char * i_sText2Insert )
{
if ( !i_sText2Insert || !i_sText2Insert[0] )
return;
aSourcesStack.push( S_SourceState(
dpSource,
nSourceSize,
nCurPos,
nLastCut,
nLastTokenStart,
cCharAtLastCut ) );
nSourceSize = strlen(i_sText2Insert);
dpSource = new char[nSourceSize+1];
strcpy( dpSource, i_sText2Insert); // SAFE STRCPY (#100211# - checked)
BeginSource();
}
const char *
CharacterSource::CutToken()
{
dpSource[nLastCut] = cCharAtLastCut;
nLastTokenStart = nLastCut;
nLastCut = CurPos();
cCharAtLastCut = dpSource[nLastCut];
dpSource[nLastCut] = NULCH;
return &dpSource[nLastTokenStart];
}
void
CharacterSource::BeginSource()
{
nCurPos = 0;
nLastCut = 0;
nLastTokenStart = 0;
cCharAtLastCut = dpSource[nLastCut];
dpSource[nLastCut] = NULCH;
}
// KORR_FUTURE: So far, this works only when tokens do not cross inserted text boundaries.
char
CharacterSource::MoveOn_OverStack()
{
while ( aSourcesStack.size() > 0 AND nCurPos >= nSourceSize-1 )
{
S_SourceState & aState = aSourcesStack.top();
delete [] dpSource;
dpSource = aState.dpSource;
nSourceSize = aState.nSourceSize;
nCurPos = aState.nCurPos;
nLastCut = aState.nLastCut;
nLastTokenStart = aState.nLastTokenStart;
cCharAtLastCut = aState.cCharAtLastCut;
aSourcesStack.pop();
}
if ( nLastCut < nCurPos )
CutToken();
return CurChar();
}
CharacterSource::
S_SourceState::S_SourceState( DYN char * dpSource_,
intt nSourceSize_,
intt nCurPos_,
intt nLastCut_,
intt nLastTokenStart_,
char cCharAtLastCut_ )
: dpSource(dpSource_),
nSourceSize(nSourceSize_),
nCurPos(nCurPos_),
nLastCut(nLastCut_),
nLastTokenStart(nLastTokenStart_),
cCharAtLastCut(cCharAtLastCut_)
{
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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