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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 .
*/
#include <i18nutil/searchopt.hxx>
#include <i18nlangtag/languagetag.hxx>
#include <vcl/textdata.hxx>
#include <vcl/xtextedt.hxx>
#include <vcl/svapp.hxx>
#include <vcl/settings.hxx>
#include <unotools/textsearch.hxx>
#include <com/sun/star/util/SearchFlags.hpp>
using namespace ::com::sun::star;
static const std::wstring gaGroupChars = L"(){}[]";
ExtTextEngine::ExtTextEngine()
{
}
ExtTextEngine::~ExtTextEngine()
{
}
TextSelection ExtTextEngine::MatchGroup( const TextPaM& rCursor ) const
{
TextSelection aSel( rCursor );
const sal_Int32 nPos = rCursor.GetIndex();
sal_uInt32 nPara = rCursor.GetPara();
const sal_uInt32 nParas = GetParagraphCount();
if ( ( nPara < nParas ) && ( nPos < GetTextLen( nPara ) ) )
{
size_t nMatchIndex = gaGroupChars.find( GetText( rCursor.GetPara() )[ nPos ] );
if ( nMatchIndex != std::wstring::npos )
{
if ( ( nMatchIndex % 2 ) == 0 )
{
// search forwards
sal_Unicode nSC = gaGroupChars[ nMatchIndex ];
sal_Unicode nEC = gaGroupChars[ nMatchIndex+1 ];
sal_Int32 nCur = nPos+1;
sal_uInt16 nLevel = 1;
while ( nLevel && ( nPara < nParas ) )
{
OUString aStr = GetText( nPara );
while ( nCur < aStr.getLength() )
{
if ( aStr[nCur] == nSC )
nLevel++;
else if ( aStr[nCur] == nEC )
{
nLevel--;
if ( !nLevel )
break; // while nCur...
}
nCur++;
}
if ( nLevel )
{
nPara++;
nCur = 0;
}
}
if ( nLevel == 0 ) // found
{
aSel.GetStart() = rCursor;
aSel.GetEnd() = TextPaM( nPara, nCur+1 );
}
}
else
{
// search backwards
sal_Unicode nEC = gaGroupChars[ nMatchIndex ];
sal_Unicode nSC = gaGroupChars[ nMatchIndex-1 ];
sal_Int32 nCur = rCursor.GetIndex()-1;
sal_uInt16 nLevel = 1;
while ( nLevel )
{
if ( GetTextLen( nPara ) )
{
OUString aStr = GetText( nPara );
while ( nCur )
{
if ( aStr[nCur] == nSC )
{
nLevel--;
if ( !nLevel )
break; // while nCur...
}
else if ( aStr[nCur] == nEC )
nLevel++;
nCur--;
}
}
if ( nLevel )
{
if ( nPara )
{
nPara--;
nCur = GetTextLen( nPara )-1; // no matter if negative, as if Len()
}
else
break;
}
}
if ( nLevel == 0 ) // found
{
aSel.GetStart() = rCursor;
++aSel.GetStart().GetIndex(); // behind the char
aSel.GetEnd() = TextPaM( nPara, nCur );
}
}
}
}
return aSel;
}
bool ExtTextEngine::Search( TextSelection& rSel, const i18nutil::SearchOptions& rSearchOptions, bool bForward )
{
TextSelection aSel( rSel );
aSel.Justify();
bool bSearchInSelection = (0 != (rSearchOptions.searchFlag & util::SearchFlags::REG_NOT_BEGINOFLINE) );
TextPaM aStartPaM( aSel.GetEnd() );
if ( aSel.HasRange() && ( ( bSearchInSelection && bForward ) || ( !bSearchInSelection && !bForward ) ) )
{
aStartPaM = aSel.GetStart();
}
bool bFound = false;
sal_uInt32 nEndNode;
if ( bSearchInSelection )
nEndNode = bForward ? aSel.GetEnd().GetPara() : aSel.GetStart().GetPara();
else
nEndNode = bForward ? (GetParagraphCount()-1) : 0;
const sal_uInt32 nStartNode = aStartPaM.GetPara();
i18nutil::SearchOptions aOptions( rSearchOptions );
aOptions.Locale = Application::GetSettings().GetLanguageTag().getLocale();
utl::TextSearch aSearcher( utl::TextSearch::UpgradeToSearchOptions2(aOptions) );
// iterate over the paragraphs
for ( sal_uInt32 nNode = nStartNode;
bForward ? ( nNode <= nEndNode) : ( nNode >= nEndNode );
bForward ? nNode++ : nNode-- )
{
OUString aText = GetText( nNode );
sal_Int32 nStartPos = 0;
sal_Int32 nEndPos = aText.getLength();
if ( nNode == nStartNode )
{
if ( bForward )
nStartPos = aStartPaM.GetIndex();
else
nEndPos = aStartPaM.GetIndex();
}
if ( ( nNode == nEndNode ) && bSearchInSelection )
{
if ( bForward )
nEndPos = aSel.GetEnd().GetIndex();
else
nStartPos = aSel.GetStart().GetIndex();
}
if ( bForward )
bFound = aSearcher.SearchForward( aText, &nStartPos, &nEndPos );
else
bFound = aSearcher.SearchBackward( aText, &nEndPos, &nStartPos );
if ( bFound )
{
rSel.GetStart().GetPara() = nNode;
rSel.GetStart().GetIndex() = nStartPos;
rSel.GetEnd().GetPara() = nNode;
rSel.GetEnd().GetIndex() = nEndPos;
// Select over the paragraph?
// FIXME This should be max long...
if( nEndPos == -1)
{
if ( (rSel.GetEnd().GetPara()+1) < GetParagraphCount() )
{
rSel.GetEnd().GetPara()++;
rSel.GetEnd().GetIndex() = 0;
}
else
{
rSel.GetEnd().GetIndex() = nStartPos;
bFound = false;
}
}
break;
}
if ( !bForward && !nNode ) // if searching backwards, if nEndNode == 0:
break;
}
return bFound;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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