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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 <com/sun/star/lang/Locale.hpp>
#include <com/sun/star/util/XTextSearch2.hpp>
#include <com/sun/star/util/SearchOptions2.hpp>
class CharClass;
namespace com {
namespace sun {
namespace star {
namespace util {
struct SearchResult;
}
}
}
}
namespace utl
{
// Utility class for searching
class UNOTOOLS_DLLPUBLIC SearchParam
{
public:
enum SearchType: int { SRCH_NORMAL, SRCH_REGEXP, SRCH_LEVDIST, SRCH_WILDCARD };
// fix underlying type (as int, arbitrarily), so that
// ScDocOptions::eSearchTypeUnknown = -1 does not cause -fsanitize=enum
/** 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 SRCH_WILDCARD;
}
return rbRegExp ? SRCH_REGEXP : SRCH_NORMAL;
}
/** Convert SearchType to configuration and document boolean settings.
*/
static void ConvertToBool( const SearchType eSearchType, bool& rbWildcard, bool& rbRegExp )
{
switch (eSearchType)
{
case SRCH_WILDCARD:
rbWildcard = true;
rbRegExp = false;
break;
case SRCH_REGEXP:
rbWildcard = false;
rbRegExp = true;
break;
default:
// SRCH_LEVDIST is not a persistent setting.
rbWildcard = false;
rbRegExp = false;
break;
}
}
private:
OUString sSrchStr; // the search string
OUString sReplaceStr; // the replace string
SearchType m_eSrchType; // search normal/regular/LevDist
sal_uInt32 m_cWildEscChar; // wildcard escape character
bool m_bWordOnly : 1; // used by normal search
bool m_bSrchInSel : 1; // search only in the selection
bool m_bCaseSense : 1;
bool m_bWildMatchSel : 1; // wildcard pattern must match entire selection
// values for the "weight Levenshtein-Distance"
bool bLEV_Relaxed : 1;
int nLEV_OtherX;
int nLEV_ShorterY;
int nLEV_LongerZ;
// asian flags - used for the transliteration
long nTransliterationFlags;
public:
SearchParam( const OUString &rText,
SearchType eSrchType = SearchParam::SRCH_NORMAL,
bool bCaseSensitive = true,
sal_uInt32 cWildEscChar = '\\',
bool bWildMatchSel = false );
SearchParam( const SearchParam& );
~SearchParam();
const OUString& GetSrchStr() const { return sSrchStr; }
const OUString& GetReplaceStr() const { return sReplaceStr; }
SearchType GetSrchType() const { return m_eSrchType; }
bool IsCaseSensitive() const { return m_bCaseSense; }
bool IsSrchInSelection() const { return m_bSrchInSel; }
bool IsSrchWordOnly() const { return m_bWordOnly; }
bool IsWildMatchSel() const { return m_bWildMatchSel; }
// signed return for API use
sal_Int32 GetWildEscChar() const { return static_cast<sal_Int32>(m_cWildEscChar); }
bool IsSrchRelaxed() const { return bLEV_Relaxed; }
int GetLEVOther() const { return nLEV_OtherX; }
int GetLEVShorter() const { return nLEV_ShorterY; }
int GetLEVLonger() const { return nLEV_LongerZ; }
long GetTransliterationFlags() const { return nTransliterationFlags; }
};
// 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 css::util::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 css::util::SearchOptions2& rPara );
~TextSearch();
/* search in the (selected) text the search string:
rScrTxt - the text, in which we search
pStart - start position for the search
pEnde - 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,pEnde 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 );
bool SearchBackward( const OUString &rStr,
sal_Int32* pStart, sal_Int32* pEnd,
css::util::SearchResult* pRes = nullptr );
void SetLocale( const css::util::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 );
/** Upgrade SearchOptions to SearchOptions2 for places that don't handle
SearchOptions2 yet. Better fix your module if you want to support
wildcard search.
*/
static css::util::SearchOptions2 UpgradeToSearchOptions2( const css::util::SearchOptions& rOptions );
};
} // namespace utl
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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