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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 .
*/
#ifndef INCLUDED_UNOTOOLS_TEXTSEARCH_HXX
#define INCLUDED_UNOTOOLS_TEXTSEARCH_HXX
#include <unotools/unotoolsdllapi.h>
#include <i18nlangtag/lang.h>
#include <rtl/ustring.hxx>
#include <com/sun/star/uno/Reference.h>
#include <ostream>
class CharClass;
namespace com::sun::star::lang { struct Locale; }
namespace com::sun::star::util { class XTextSearch2; }
namespace com::sun::star::util { struct SearchResult; }
namespace i18nutil {
struct SearchOptions;
struct SearchOptions2;
}
enum class TransliterationFlags;
namespace utl
{
// Utility class for searching
class UNOTOOLS_DLLPUBLIC SearchParam
{
public:
enum class SearchType { Normal, Regexp, Wildcard, Unknown = -1 };
/** Convert configuration and document boolean settings to SearchType.
If bWildcard is true it takes precedence over rbRegExp.
@param rbRegExp
If true and bWildcard is also true, rbRegExp is set to false to
adapt the caller's settings.
*/
static SearchType ConvertToSearchType( bool bWildcard, bool & rbRegExp )
{
if (bWildcard)
{
if (rbRegExp)
rbRegExp = false;
return SearchType::Wildcard;
}
return rbRegExp ? SearchType::Regexp : SearchType::Normal;
}
/** Convert SearchType to configuration and document boolean settings.
*/
static void ConvertToBool( const SearchType eSearchType, bool& rbWildcard, bool& rbRegExp )
{
switch (eSearchType)
{
case SearchType::Wildcard:
rbWildcard = true;
rbRegExp = false;
break;
case SearchType::Regexp:
rbWildcard = false;
rbRegExp = true;
break;
default:
rbWildcard = false;
rbRegExp = false;
break;
}
}
private:
OUString sSrchStr; // the search string
SearchType m_eSrchType; // search normal/regular/LevDist
sal_uInt32 m_cWildEscChar; // wildcard escape character
bool m_bCaseSense : 1;
bool m_bWildMatchSel : 1; // wildcard pattern must match entire selection
public:
SearchParam( const OUString &rText,
SearchType eSrchType,
bool bCaseSensitive = true,
sal_uInt32 cWildEscChar = '\\',
bool bWildMatchSel = false );
SearchParam( const SearchParam& );
~SearchParam();
const OUString& GetSrchStr() const { return sSrchStr; }
SearchType GetSrchType() const { return m_eSrchType; }
bool IsCaseSensitive() const { return m_bCaseSense; }
bool IsWildMatchSel() const { return m_bWildMatchSel; }
// signed return for API use
sal_Int32 GetWildEscChar() const { return static_cast<sal_Int32>(m_cWildEscChar); }
};
// For use in SAL_DEBUG etc. Output format not guaranteed to be stable.
template<typename charT, typename traits>
inline std::basic_ostream<charT, traits> & operator <<(std::basic_ostream<charT, traits> & stream, const SearchParam::SearchType& eType)
{
switch (eType)
{
case SearchParam::SearchType::Normal:
stream << "N";
break;
case SearchParam::SearchType::Regexp:
stream << "RE";
break;
case SearchParam::SearchType::Wildcard:
stream << "WC";
break;
case SearchParam::SearchType::Unknown:
stream << "UNK";
break;
default:
stream << static_cast<int>(eType) << '?';
break;
}
return stream;
}
// Utility class for searching a substring in a string.
// The following metrics are supported
// - ordinary text (Bayer/Moore)
// - regular expressions
// - weighted Levenshtein distance
// - wildcards '*' and '?'
// This class allows forward and backward searching!
class UNOTOOLS_DLLPUBLIC TextSearch
{
static css::uno::Reference< css::util::XTextSearch2 >
getXTextSearch( const i18nutil::SearchOptions2& rPara );
css::uno::Reference < css::util::XTextSearch2 >
xTextSearch;
void Init( const SearchParam & rParam,
const css::lang::Locale& rLocale );
public:
// rText is the string being searched for
// this first two CTORs are deprecated!
TextSearch( const SearchParam & rPara, LanguageType nLanguage );
TextSearch( const SearchParam & rPara, const CharClass& rCClass );
TextSearch( const i18nutil::SearchOptions2& rPara );
~TextSearch();
/* search in the (selected) text the search string:
rScrTxt - the text, in which we search
pStart - start position for the search
pEnd - end position for the search
RETURN values == true: something is found
- pStart start pos of the found text,
- pStart end pos of the found text,
- pSrchResult - the search result with all found
positions. Is only filled with more positions
if the regular expression handles groups.
== false: nothing found, pStart, pEnd unchanged.
Definitions: start pos always inclusive, end pos always exclusive!
The position must always in the right direction!
search forward: start <= end
search backward: end <= start
*/
bool SearchForward( const OUString &rStr,
sal_Int32* pStart, sal_Int32* pEnd,
css::util::SearchResult* pRes = nullptr );
/**
* @brief searchForward Search forward beginning from the start to the end
* of the given text
* @param rStr The text in which we search
* @return True if the search term is found in the text
*/
bool searchForward( const OUString &rStr );
bool SearchBackward( const OUString &rStr,
sal_Int32* pStart, sal_Int32* pEnd,
css::util::SearchResult* pRes = nullptr );
void SetLocale( const i18nutil::SearchOptions2& rOpt,
const css::lang::Locale& rLocale );
/* replace back references in the replace string by the sub expressions from the search result */
void ReplaceBackReferences( OUString& rReplaceStr, const OUString &rStr, const css::util::SearchResult& rResult ) const;
/** Upgrade SearchOptions to SearchOptions2 for places that don't handle
SearchOptions2 yet. Better fix your module if you want to support
wildcard search.
*/
static i18nutil::SearchOptions2 UpgradeToSearchOptions2( const i18nutil::SearchOptions& rOptions );
};
} // namespace utl
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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