1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 /*
3 * This file is part of the LibreOffice project.
4 *
5 * This Source Code Form is subject to the terms of the Mozilla Public
6 * License, v. 2.0. If a copy of the MPL was not distributed with this
7 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 *
9 * This file incorporates work covered by the following license notice:
10 *
11 * Licensed to the Apache Software Foundation (ASF) under one or more
12 * contributor license agreements. See the NOTICE file distributed
13 * with this work for additional information regarding copyright
14 * ownership. The ASF licenses this file to you under the Apache
15 * License, Version 2.0 (the "License"); you may not use this file
16 * except in compliance with the License. You may obtain a copy of
17 * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 */
19
20 #include <i18nutil/searchopt.hxx>
21 #include <i18nlangtag/languagetag.hxx>
22 #include <vcl/textdata.hxx>
23 #include <vcl/xtextedt.hxx>
24 #include <vcl/svapp.hxx>
25 #include <vcl/settings.hxx>
26 #include <unotools/textsearch.hxx>
27 #include <com/sun/star/util/SearchFlags.hpp>
28
29 using namespace ::com::sun::star;
30
31 const std::wstring gaGroupChars = L"(){}[]";
32
ExtTextEngine()33 ExtTextEngine::ExtTextEngine()
34 {
35 }
36
~ExtTextEngine()37 ExtTextEngine::~ExtTextEngine()
38 {
39 }
40
MatchGroup(const TextPaM & rCursor) const41 TextSelection ExtTextEngine::MatchGroup( const TextPaM& rCursor ) const
42 {
43 TextSelection aSel( rCursor );
44 const sal_Int32 nPos = rCursor.GetIndex();
45 sal_uInt32 nPara = rCursor.GetPara();
46 const sal_uInt32 nParas = GetParagraphCount();
47 if ( ( nPara < nParas ) && ( nPos < GetTextLen( nPara ) ) )
48 {
49 size_t nMatchIndex = gaGroupChars.find( GetText( rCursor.GetPara() )[ nPos ] );
50 if ( nMatchIndex != std::wstring::npos )
51 {
52 if ( ( nMatchIndex % 2 ) == 0 )
53 {
54 // search forwards
55 sal_Unicode nSC = gaGroupChars[ nMatchIndex ];
56 sal_Unicode nEC = gaGroupChars[ nMatchIndex+1 ];
57
58 sal_Int32 nCur = nPos+1;
59 sal_uInt16 nLevel = 1;
60 while ( nLevel && ( nPara < nParas ) )
61 {
62 OUString aStr = GetText( nPara );
63 while ( nCur < aStr.getLength() )
64 {
65 if ( aStr[nCur] == nSC )
66 nLevel++;
67 else if ( aStr[nCur] == nEC )
68 {
69 nLevel--;
70 if ( !nLevel )
71 break; // while nCur...
72 }
73 nCur++;
74 }
75
76 if ( nLevel )
77 {
78 nPara++;
79 nCur = 0;
80 }
81 }
82 if ( nLevel == 0 ) // found
83 {
84 aSel.GetStart() = rCursor;
85 aSel.GetEnd() = TextPaM( nPara, nCur+1 );
86 }
87 }
88 else
89 {
90 // search backwards
91 sal_Unicode nEC = gaGroupChars[ nMatchIndex ];
92 sal_Unicode nSC = gaGroupChars[ nMatchIndex-1 ];
93
94 sal_Int32 nCur = rCursor.GetIndex()-1;
95 sal_uInt16 nLevel = 1;
96 while ( nLevel )
97 {
98 if ( GetTextLen( nPara ) )
99 {
100 OUString aStr = GetText( nPara );
101 while ( nCur )
102 {
103 if ( aStr[nCur] == nSC )
104 {
105 nLevel--;
106 if ( !nLevel )
107 break; // while nCur...
108 }
109 else if ( aStr[nCur] == nEC )
110 nLevel++;
111
112 nCur--;
113 }
114 }
115
116 if ( nLevel )
117 {
118 if ( nPara )
119 {
120 nPara--;
121 nCur = GetTextLen( nPara )-1; // no matter if negative, as if Len()
122 }
123 else
124 break;
125 }
126 }
127
128 if ( nLevel == 0 ) // found
129 {
130 aSel.GetStart() = rCursor;
131 ++aSel.GetStart().GetIndex(); // behind the char
132 aSel.GetEnd() = TextPaM( nPara, nCur );
133 }
134 }
135 }
136 }
137 return aSel;
138 }
139
Search(TextSelection & rSel,const i18nutil::SearchOptions & rSearchOptions,bool bForward)140 bool ExtTextEngine::Search( TextSelection& rSel, const i18nutil::SearchOptions& rSearchOptions, bool bForward )
141 {
142 TextSelection aSel( rSel );
143 aSel.Justify();
144
145 bool bSearchInSelection = (0 != (rSearchOptions.searchFlag & util::SearchFlags::REG_NOT_BEGINOFLINE) );
146
147 TextPaM aStartPaM( aSel.GetEnd() );
148 if ( aSel.HasRange() && ( ( bSearchInSelection && bForward ) || ( !bSearchInSelection && !bForward ) ) )
149 {
150 aStartPaM = aSel.GetStart();
151 }
152
153 bool bFound = false;
154 sal_uInt32 nEndNode;
155
156 if ( bSearchInSelection )
157 nEndNode = bForward ? aSel.GetEnd().GetPara() : aSel.GetStart().GetPara();
158 else
159 nEndNode = bForward ? (GetParagraphCount()-1) : 0;
160
161 const sal_uInt32 nStartNode = aStartPaM.GetPara();
162
163 i18nutil::SearchOptions aOptions( rSearchOptions );
164 aOptions.Locale = Application::GetSettings().GetLanguageTag().getLocale();
165 utl::TextSearch aSearcher( utl::TextSearch::UpgradeToSearchOptions2(aOptions) );
166
167 // iterate over the paragraphs
168 for ( sal_uInt32 nNode = nStartNode;
169 bForward ? ( nNode <= nEndNode) : ( nNode >= nEndNode );
170 bForward ? nNode++ : nNode-- )
171 {
172 OUString aText = GetText( nNode );
173 sal_Int32 nStartPos = 0;
174 sal_Int32 nEndPos = aText.getLength();
175 if ( nNode == nStartNode )
176 {
177 if ( bForward )
178 nStartPos = aStartPaM.GetIndex();
179 else
180 nEndPos = aStartPaM.GetIndex();
181 }
182 if ( ( nNode == nEndNode ) && bSearchInSelection )
183 {
184 if ( bForward )
185 nEndPos = aSel.GetEnd().GetIndex();
186 else
187 nStartPos = aSel.GetStart().GetIndex();
188 }
189
190 if ( bForward )
191 bFound = aSearcher.SearchForward( aText, &nStartPos, &nEndPos );
192 else
193 bFound = aSearcher.SearchBackward( aText, &nEndPos, &nStartPos );
194
195 if ( bFound )
196 {
197 rSel.GetStart().GetPara() = nNode;
198 rSel.GetStart().GetIndex() = nStartPos;
199 rSel.GetEnd().GetPara() = nNode;
200 rSel.GetEnd().GetIndex() = nEndPos;
201 // Select over the paragraph?
202 // FIXME This should be max long...
203 if( nEndPos == -1)
204 {
205 if ( (rSel.GetEnd().GetPara()+1) < GetParagraphCount() )
206 {
207 rSel.GetEnd().GetPara()++;
208 rSel.GetEnd().GetIndex() = 0;
209 }
210 else
211 {
212 rSel.GetEnd().GetIndex() = nStartPos;
213 bFound = false;
214 }
215 }
216
217 break;
218 }
219
220 if ( !bForward && !nNode ) // if searching backwards, if nEndNode == 0:
221 break;
222 }
223
224 return bFound;
225 }
226
227 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
228