Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 398 insertions, 0 deletions

diff --git a/unotools/source/i18n/textsearch.cxx b/unotools/source/i18n/textsearch.cxx
new file mode 100644
index 000000000..79d5cc68f
--- /dev/null
+++ b/unotools/source/i18n/textsearch.cxx
@@ -0,0 +1,398 @@
+/* -*- 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 <sal/config.h>
+
+#include <cstdlib>
+#include <string_view>
+
+#include <i18nlangtag/languagetag.hxx>
+#include <i18nutil/searchopt.hxx>
+#include <i18nutil/transliteration.hxx>
+#include <com/sun/star/util/TextSearch2.hpp>
+#include <com/sun/star/util/SearchAlgorithms2.hpp>
+#include <com/sun/star/util/SearchFlags.hpp>
+#include <unotools/charclass.hxx>
+#include <comphelper/processfactory.hxx>
+#include <unotools/textsearch.hxx>
+#include <rtl/ustrbuf.hxx>
+#include <tools/diagnose_ex.h>
+#include <mutex>
+
+using namespace ::com::sun::star::util;
+using namespace ::com::sun::star::uno;
+using namespace ::com::sun::star::lang;
+
+namespace utl
+{
+
+SearchParam::SearchParam( const OUString &rText,
+                                SearchType eType,
+                                bool bCaseSensitive,
+                                sal_uInt32 cWildEscChar,
+                                bool bWildMatchSel )
+{
+    sSrchStr        = rText;
+    m_eSrchType     = eType;
+
+    m_cWildEscChar  = cWildEscChar;
+
+    m_bCaseSense    = bCaseSensitive;
+    m_bWildMatchSel = bWildMatchSel;
+}
+
+SearchParam::SearchParam( const SearchParam& rParam )
+{
+    sSrchStr        = rParam.sSrchStr;
+    m_eSrchType     = rParam.m_eSrchType;
+
+    m_cWildEscChar  = rParam.m_cWildEscChar;
+
+    m_bCaseSense    = rParam.m_bCaseSense;
+    m_bWildMatchSel = rParam.m_bWildMatchSel;
+}
+
+SearchParam::~SearchParam() {}
+
+static bool lcl_Equals( const i18nutil::SearchOptions2& rSO1, const i18nutil::SearchOptions2& rSO2 )
+{
+    return
+        rSO1.AlgorithmType2 == rSO2.AlgorithmType2 &&
+        rSO1.WildcardEscapeCharacter == rSO2.WildcardEscapeCharacter &&
+        rSO1.algorithmType == rSO2.algorithmType &&
+        rSO1.searchFlag == rSO2.searchFlag &&
+        rSO1.searchString == rSO2.searchString &&
+        rSO1.replaceString == rSO2.replaceString &&
+        rSO1.changedChars == rSO2.changedChars &&
+        rSO1.deletedChars == rSO2.deletedChars &&
+        rSO1.insertedChars == rSO2.insertedChars &&
+        rSO1.Locale.Language == rSO2.Locale.Language &&
+        rSO1.Locale.Country == rSO2.Locale.Country &&
+        rSO1.Locale.Variant == rSO2.Locale.Variant &&
+        rSO1.transliterateFlags == rSO2.transliterateFlags;
+}
+
+namespace
+{
+    struct CachedTextSearch
+    {
+        std::mutex mutex;
+        i18nutil::SearchOptions2 Options;
+        css::uno::Reference< css::util::XTextSearch2 > xTextSearch;
+    };
+}
+
+Reference<XTextSearch2> TextSearch::getXTextSearch( const i18nutil::SearchOptions2& rPara )
+{
+    static CachedTextSearch theCachedTextSearch;
+
+    std::scoped_lock aGuard(theCachedTextSearch.mutex);
+
+    if ( lcl_Equals(theCachedTextSearch.Options, rPara) )
+        return theCachedTextSearch.xTextSearch;
+
+    Reference< XComponentContext > xContext = ::comphelper::getProcessComponentContext();
+    theCachedTextSearch.xTextSearch.set( ::TextSearch2::create(xContext) );
+    theCachedTextSearch.xTextSearch->setOptions2( rPara.toUnoSearchOptions2() );
+    theCachedTextSearch.Options = rPara;
+
+    return theCachedTextSearch.xTextSearch;
+}
+
+TextSearch::TextSearch(const SearchParam & rParam, LanguageType eLang )
+{
+    if( LANGUAGE_NONE == eLang )
+        eLang = LANGUAGE_SYSTEM;
+    css::lang::Locale aLocale( LanguageTag::convertToLocale( eLang ) );
+
+    Init( rParam, aLocale);
+}
+
+TextSearch::TextSearch(const SearchParam & rParam, const CharClass& rCClass )
+{
+    Init( rParam, rCClass.getLanguageTag().getLocale() );
+}
+
+TextSearch::TextSearch( const i18nutil::SearchOptions2& rPara )
+{
+    xTextSearch = getXTextSearch( rPara );
+}
+
+i18nutil::SearchOptions2 TextSearch::UpgradeToSearchOptions2( const i18nutil::SearchOptions& rOptions )
+{
+    sal_Int16 nAlgorithmType2;
+    switch (rOptions.algorithmType)
+    {
+        case SearchAlgorithms_REGEXP:
+            nAlgorithmType2 = SearchAlgorithms2::REGEXP;
+            break;
+        case SearchAlgorithms_APPROXIMATE:
+            nAlgorithmType2 = SearchAlgorithms2::APPROXIMATE;
+            break;
+        case SearchAlgorithms_ABSOLUTE:
+            nAlgorithmType2 = SearchAlgorithms2::ABSOLUTE;
+            break;
+        default:
+            for (;;) std::abort();
+    }
+    // It would be nice if an inherited struct had a ctor that takes an
+    // instance of the object the struct derived from...
+    i18nutil::SearchOptions2 aOptions2(
+            rOptions.algorithmType,
+            rOptions.searchFlag,
+            rOptions.searchString,
+            rOptions.replaceString,
+            rOptions.Locale,
+            rOptions.changedChars,
+            rOptions.deletedChars,
+            rOptions.insertedChars,
+            rOptions.transliterateFlags,
+            nAlgorithmType2,
+            0       // no wildcard search, no escape character...
+            );
+    return aOptions2;
+}
+
+void TextSearch::Init( const SearchParam & rParam,
+                        const css::lang::Locale& rLocale )
+{
+    // convert SearchParam to the UNO SearchOptions2
+    i18nutil::SearchOptions2 aSOpt;
+
+    switch( rParam.GetSrchType() )
+    {
+    case SearchParam::SearchType::Wildcard:
+        aSOpt.AlgorithmType2 = SearchAlgorithms2::WILDCARD;
+        aSOpt.algorithmType = SearchAlgorithms::SearchAlgorithms_MAKE_FIXED_SIZE;    // no old enum for that
+        aSOpt.WildcardEscapeCharacter = rParam.GetWildEscChar();
+        if (rParam.IsWildMatchSel())
+            aSOpt.searchFlag |= SearchFlags::WILD_MATCH_SELECTION;
+        break;
+
+    case SearchParam::SearchType::Regexp:
+        aSOpt.AlgorithmType2 = SearchAlgorithms2::REGEXP;
+        aSOpt.algorithmType = SearchAlgorithms_REGEXP;
+        break;
+
+    case SearchParam::SearchType::Normal:
+        aSOpt.AlgorithmType2 = SearchAlgorithms2::ABSOLUTE;
+        aSOpt.algorithmType = SearchAlgorithms_ABSOLUTE;
+        break;
+
+    default:
+        for (;;) std::abort();
+    }
+    aSOpt.searchString = rParam.GetSrchStr();
+    aSOpt.replaceString = "";
+    aSOpt.Locale = rLocale;
+    aSOpt.transliterateFlags = TransliterationFlags::NONE;
+    if( !rParam.IsCaseSensitive() )
+    {
+        aSOpt.searchFlag |= SearchFlags::ALL_IGNORE_CASE;
+        aSOpt.transliterateFlags |= TransliterationFlags::IGNORE_CASE;
+    }
+
+    xTextSearch = getXTextSearch( aSOpt );
+}
+
+void TextSearch::SetLocale( const i18nutil::SearchOptions2& rOptions,
+                            const css::lang::Locale& rLocale )
+{
+    i18nutil::SearchOptions2 aSOpt( rOptions );
+    aSOpt.Locale = rLocale;
+
+    xTextSearch = getXTextSearch( aSOpt );
+}
+
+TextSearch::~TextSearch()
+{
+}
+
+/*
+ * General search methods. These methods will call the respective
+ * methods, such as ordinary string searching or regular expression
+ * matching, using the method pointer.
+ */
+bool TextSearch::SearchForward( const OUString &rStr,
+                    sal_Int32* pStart, sal_Int32* pEnd,
+                    css::util::SearchResult* pRes)
+{
+    bool bRet = false;
+    try
+    {
+        if( xTextSearch.is() )
+        {
+            SearchResult aRet( xTextSearch->searchForward( rStr, *pStart, *pEnd ));
+            if( aRet.subRegExpressions > 0 )
+            {
+                bRet = true;
+                // the XTextsearch returns in startOffset the higher position
+                // and the endposition is always exclusive.
+                // The caller of this function will have in startPos the
+                // lower pos. and end
+                *pStart = aRet.startOffset[ 0 ];
+                *pEnd = aRet.endOffset[ 0 ];
+                if( pRes )
+                    *pRes = aRet;
+            }
+        }
+    }
+    catch ( Exception& )
+    {
+        TOOLS_WARN_EXCEPTION("unotools.i18n", "" );
+    }
+    return bRet;
+}
+
+bool TextSearch::searchForward( const OUString &rStr )
+{
+    sal_Int32 pStart = 0;
+    sal_Int32 pEnd = rStr.getLength();
+
+    bool bResult = SearchForward(rStr, &pStart, &pEnd);
+
+    return bResult;
+}
+
+bool TextSearch::SearchBackward( const OUString & rStr, sal_Int32* pStart,
+                                sal_Int32* pEnd, SearchResult* pRes )
+{
+    bool bRet = false;
+    try
+    {
+        if( xTextSearch.is() )
+        {
+            SearchResult aRet( xTextSearch->searchBackward( rStr, *pStart, *pEnd ));
+            if( aRet.subRegExpressions )
+            {
+                bRet = true;
+                // the XTextsearch returns in startOffset the higher position
+                // and the endposition is always exclusive.
+                // The caller of this function will have in startPos the
+                // lower pos. and end
+                *pEnd = aRet.startOffset[ 0 ];
+                *pStart = aRet.endOffset[ 0 ];
+                if( pRes )
+                    *pRes = aRet;
+            }
+        }
+    }
+    catch ( Exception& )
+    {
+        TOOLS_WARN_EXCEPTION("unotools.i18n", "" );
+    }
+    return bRet;
+}
+
+void TextSearch::ReplaceBackReferences( OUString& rReplaceStr, std::u16string_view rStr, const SearchResult& rResult ) const
+{
+    if( rResult.subRegExpressions <= 0 )
+        return;
+
+    sal_Unicode sFndChar;
+    sal_Int32 i;
+    OUStringBuffer sBuff(rReplaceStr.getLength()*4);
+    for(i = 0; i < rReplaceStr.getLength(); i++)
+    {
+        if( rReplaceStr[i] == '&')
+        {
+            sal_Int32 nStart = rResult.startOffset[0];
+            sal_Int32 nLength = rResult.endOffset[0] - rResult.startOffset[0];
+            sBuff.append(rStr.substr(nStart, nLength));
+        }
+        else if((i < rReplaceStr.getLength() - 1) && rReplaceStr[i] == '$')
+        {
+            sFndChar = rReplaceStr[ i + 1 ];
+            switch(sFndChar)
+            {   // placeholder for a backward reference?
+            case '0':
+            case '1':
+            case '2':
+            case '3':
+            case '4':
+            case '5':
+            case '6':
+            case '7':
+            case '8':
+            case '9':
+                {
+                    int j = sFndChar - '0'; // index
+                    if(j < rResult.subRegExpressions)
+                    {
+                        sal_Int32 nSttReg = rResult.startOffset[j];
+                        sal_Int32 nRegLen = rResult.endOffset[j];
+                        if (nSttReg < 0 || nRegLen < 0) // A "not found" optional capture
+                        {
+                            nSttReg = nRegLen = 0; // Copy empty string
+                        }
+                        else if (nRegLen >= nSttReg)
+                        {
+                            nRegLen = nRegLen - nSttReg;
+                        }
+                        else
+                        {
+                            nRegLen = nSttReg - nRegLen;
+                            nSttReg = rResult.endOffset[j];
+                        }
+                        // Copy reference from found string
+                        sBuff.append(rStr.substr(nSttReg, nRegLen));
+                    }
+                    i += 1;
+                }
+                break;
+            default:
+                sBuff.append(rReplaceStr[i]);
+                sBuff.append(rReplaceStr[i+1]);
+                i += 1;
+                break;
+            }
+        }
+        else if((i < rReplaceStr.getLength() - 1) && rReplaceStr[i] == '\\')
+        {
+            sFndChar = rReplaceStr[ i+1 ];
+            switch(sFndChar)
+            {
+            case '\\':
+            case '&':
+            case '$':
+                sBuff.append(sFndChar);
+                i+=1;
+                break;
+            case 't':
+                sBuff.append('\t');
+                i += 1;
+                break;
+            default:
+                sBuff.append(rReplaceStr[i]);
+                sBuff.append(rReplaceStr[i+1]);
+                i += 1;
+                break;
+            }
+        }
+        else
+        {
+            sBuff.append(rReplaceStr[i]);
+        }
+    }
+    rReplaceStr = sBuff.makeStringAndClear();
+}
+
+}   // namespace utl
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */