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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;
+
+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 ) const
+{
+ 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: */