diff options
Diffstat (limited to 'formula/source/ui/dlg/FormulaHelper.cxx')
| -rw-r--r-- | formula/source/ui/dlg/FormulaHelper.cxx | 406 |
1 files changed, 406 insertions, 0 deletions
diff --git a/formula/source/ui/dlg/FormulaHelper.cxx b/formula/source/ui/dlg/FormulaHelper.cxx new file mode 100644 index 000000000000..3adbd95d9fd1 --- /dev/null +++ b/formula/source/ui/dlg/FormulaHelper.cxx @@ -0,0 +1,406 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ +#include "precompiled_formula.hxx" + +#include "formula/formulahelper.hxx" +#include <unotools/charclass.hxx> +#include <unotools/syslocale.hxx> + +namespace formula +{ + + namespace + { + //============================================================================ + class OEmptyFunctionDescription : public IFunctionDescription + { + public: + OEmptyFunctionDescription(){} + virtual ~OEmptyFunctionDescription(){} + + virtual ::rtl::OUString getFunctionName() const { return ::rtl::OUString(); } + virtual const IFunctionCategory* getCategory() const { return NULL; } + virtual ::rtl::OUString getDescription() const { return ::rtl::OUString(); } + virtual xub_StrLen getSuppressedArgumentCount() const { return 0; } + virtual ::rtl::OUString getFormula(const ::std::vector< ::rtl::OUString >& ) const { return ::rtl::OUString(); } + virtual void fillVisibleArgumentMapping(::std::vector<USHORT>& ) const {} + virtual void initArgumentInfo() const {} + virtual ::rtl::OUString getSignature() const { return ::rtl::OUString(); } + virtual long getHelpId() const { return 0; } + virtual sal_uInt32 getParameterCount() const { return 0; } + virtual ::rtl::OUString getParameterName(sal_uInt32 ) const { return ::rtl::OUString(); } + virtual ::rtl::OUString getParameterDescription(sal_uInt32 ) const { return ::rtl::OUString(); } + virtual bool isParameterOptional(sal_uInt32 ) const { return sal_False; } + }; + } +//=================================================================== +// class FormulaHelper - statische Methoden +//=================================================================== + +#define FUNC_NOTFOUND 0xffff + +FormulaHelper::FormulaHelper(const IFunctionManager* _pFunctionManager) + :m_pSysLocale(new SvtSysLocale) + ,m_pFunctionManager(_pFunctionManager) + ,open(_pFunctionManager->getSingleToken(IFunctionManager::eOk)) + ,close(_pFunctionManager->getSingleToken(IFunctionManager::eClose)) + ,sep(_pFunctionManager->getSingleToken(IFunctionManager::eSep)) + ,arrayOpen(_pFunctionManager->getSingleToken(IFunctionManager::eArrayOpen)) + ,arrayClose(_pFunctionManager->getSingleToken(IFunctionManager::eArrayClose)) +{ + m_pCharClass = m_pSysLocale->GetCharClassPtr(); +} +BOOL FormulaHelper::GetNextFunc( const String& rFormula, + BOOL bBack, + xub_StrLen& rFStart, // Ein- und Ausgabe + xub_StrLen* pFEnd, // = NULL + const IFunctionDescription** ppFDesc, // = NULL + ::std::vector< ::rtl::OUString>* pArgs ) const // = NULL +{ + BOOL bFound = FALSE; + xub_StrLen nOldStart = rFStart; + String aFname; + + rFStart = GetFunctionStart( rFormula, rFStart, bBack, ppFDesc ? &aFname : NULL ); + bFound = ( rFStart != FUNC_NOTFOUND ); + + if ( bFound ) + { + if ( pFEnd ) + *pFEnd = GetFunctionEnd( rFormula, rFStart ); + + if ( ppFDesc ) + { + *ppFDesc = NULL; + const ::rtl::OUString sTemp( aFname ); + const sal_uInt32 nCategoryCount = m_pFunctionManager->getCount(); + for(sal_uInt32 j= 0; j < nCategoryCount && !*ppFDesc; ++j) + { + const IFunctionCategory* pCategory = m_pFunctionManager->getCategory(j); + const sal_uInt32 nCount = pCategory->getCount(); + for(sal_uInt32 i = 0 ; i < nCount; ++i) + { + const IFunctionDescription* pCurrent = pCategory->getFunction(i); + if ( pCurrent->getFunctionName().equalsIgnoreAsciiCase(sTemp) ) + { + *ppFDesc = pCurrent; + break; + } + } // for(sal_uInt32 i = 0 ; i < nCount; ++i) + } + if ( *ppFDesc && pArgs ) + { + GetArgStrings( *pArgs,rFormula, rFStart, static_cast<USHORT>((*ppFDesc)->getParameterCount() )); + } + else + { + static OEmptyFunctionDescription s_aFunctionDescription; + *ppFDesc = &s_aFunctionDescription; + } + } + } + else + rFStart = nOldStart; + + return bFound; +} + +//------------------------------------------------------------------------ + +void FormulaHelper::FillArgStrings( const String& rFormula, + xub_StrLen nFuncPos, + USHORT nArgs, + ::std::vector< ::rtl::OUString >& _rArgs ) const +{ + xub_StrLen nStart = 0; + xub_StrLen nEnd = 0; + USHORT i; + BOOL bLast = FALSE; + + for ( i=0; i<nArgs && !bLast; i++ ) + { + nStart = GetArgStart( rFormula, nFuncPos, i ); + + if ( i+1<nArgs ) // letztes Argument? + { + nEnd = GetArgStart( rFormula, nFuncPos, i+1 ); + + if ( nEnd != nStart ) + _rArgs.push_back(rFormula.Copy( nStart, nEnd-1-nStart )); + else + _rArgs.push_back(String()), bLast = TRUE; + } + else + { + nEnd = GetFunctionEnd( rFormula, nFuncPos )-1; + if ( nStart < nEnd ) + _rArgs.push_back( rFormula.Copy( nStart, nEnd-nStart ) ); + else + _rArgs.push_back(String()); + } + } + + if ( bLast ) + for ( ; i<nArgs; i++ ) + _rArgs.push_back(String()); +} + +//------------------------------------------------------------------------ + +void FormulaHelper::GetArgStrings( ::std::vector< ::rtl::OUString >& _rArgs + ,const String& rFormula, + xub_StrLen nFuncPos, + USHORT nArgs ) const +{ + if (nArgs) + { + FillArgStrings( rFormula, nFuncPos, nArgs, _rArgs ); + } +} + +//------------------------------------------------------------------------ + +inline BOOL IsFormulaText( const CharClass* _pCharClass,const String& rStr, xub_StrLen nPos ) +{ + if( _pCharClass->isLetterNumeric( rStr, nPos ) ) + return TRUE; + else + { // In internationalized versions function names may contain a dot + // and in every version also an underscore... ;-) + sal_Unicode c = rStr.GetChar(nPos); + return c == '.' || c == '_'; + } + +} + +xub_StrLen FormulaHelper::GetFunctionStart( const String& rFormula, + xub_StrLen nStart, + BOOL bBack, + String* pFuncName ) const +{ + xub_StrLen nStrLen = rFormula.Len(); + + if ( nStrLen < nStart ) + return nStart; + + xub_StrLen nFStart = FUNC_NOTFOUND; + xub_StrLen nParPos = nStart; + + BOOL bRepeat, bFound; + do + { + bFound = FALSE; + bRepeat = FALSE; + + if ( bBack ) + { + while ( !bFound && (nParPos > 0) ) + { + if ( rFormula.GetChar(nParPos) == '"' ) + { + nParPos--; + while ( (nParPos > 0) && rFormula.GetChar(nParPos) != '"' ) + nParPos--; + if (nParPos > 0) + nParPos--; + } + else if ( (bFound = ( rFormula.GetChar(nParPos) == '(' ) ) == FALSE ) + nParPos--; + } + } + else + { + while ( !bFound && (nParPos < nStrLen) ) + { + if ( rFormula.GetChar(nParPos) == '"' ) + { + nParPos++; + while ( (nParPos < nStrLen) && rFormula.GetChar(nParPos) != '"' ) + nParPos++; + nParPos++; + } + else if ( (bFound = ( rFormula.GetChar(nParPos) == '(' ) ) == FALSE ) + nParPos++; + } + } + + if ( bFound && (nParPos > 0) ) + { + nFStart = nParPos-1; + + while ( (nFStart > 0) && IsFormulaText(m_pCharClass, rFormula, nFStart )) + nFStart--; + } + + nFStart++; + + if ( bFound ) + { + if ( IsFormulaText( m_pCharClass,rFormula, nFStart ) ) + { + // Funktion gefunden + if ( pFuncName ) + *pFuncName = rFormula.Copy( nFStart, nParPos-nFStart ); + } + else // Klammern ohne Funktion -> weitersuchen + { + bRepeat = TRUE; + if ( !bBack ) + nParPos++; + else if (nParPos > 0) + nParPos--; + else + bRepeat = FALSE; + } + } + else // keine Klammern gefunden + { + nFStart = FUNC_NOTFOUND; + if ( pFuncName ) + pFuncName->Erase(); + } + } + while(bRepeat); + + return nFStart; +} + +//------------------------------------------------------------------------ + +xub_StrLen FormulaHelper::GetFunctionEnd( const String& rStr, xub_StrLen nStart ) const +{ + xub_StrLen nStrLen = rStr.Len(); + + if ( nStrLen < nStart ) + return nStart; + + short nParCount = 0; + bool bInArray = false; + BOOL bFound = FALSE; + + while ( !bFound && (nStart < nStrLen) ) + { + sal_Unicode c = rStr.GetChar(nStart); + + if ( c == '"' ) + { + nStart++; + while ( (nStart < nStrLen) && rStr.GetChar(nStart) != '"' ) + nStart++; + } + else if ( c == open ) + nParCount++; + else if ( c == close ) + { + nParCount--; + if ( nParCount == 0 ) + bFound = TRUE; + else if ( nParCount < 0 ) + { + bFound = TRUE; + nStart--; // einen zu weit gelesen + } + } + else if ( c == arrayOpen ) + { + bInArray = true; + } + else if ( c == arrayClose ) + { + bInArray = false; + } + else if ( c == sep ) + { + if ( !bInArray && nParCount == 0 ) + { + bFound = TRUE; + nStart--; // einen zu weit gelesen + } + } + nStart++; // hinter gefundene Position stellen + } + + return nStart; +} + +//------------------------------------------------------------------ + +xub_StrLen FormulaHelper::GetArgStart( const String& rStr, xub_StrLen nStart, USHORT nArg ) const +{ + xub_StrLen nStrLen = rStr.Len(); + + if ( nStrLen < nStart ) + return nStart; + + short nParCount = 0; + bool bInArray = false; + BOOL bFound = FALSE; + + while ( !bFound && (nStart < nStrLen) ) + { + sal_Unicode c = rStr.GetChar(nStart); + + if ( c == '"' ) + { + nStart++; + while ( (nStart < nStrLen) && rStr.GetChar(nStart) != '"' ) + nStart++; + } + else if ( c == open ) + { + bFound = ( nArg == 0 ); + nParCount++; + } + else if ( c == close ) + { + nParCount--; + bFound = ( nParCount == 0 ); + } + else if ( c == arrayOpen ) + { + bInArray = true; + } + else if ( c == arrayClose ) + { + bInArray = false; + } + else if ( c == sep ) + { + if ( !bInArray && nParCount == 1 ) + { + nArg--; + bFound = ( nArg == 0 ); + } + } + nStart++; + } + + return nStart; +} +// ============================================================================= +} // formula +// ============================================================================= |