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office-gobmx/scaddins/source/datefunc/datefunc.cxx
Sebastian Spaeth 63bb42ab7d Add vim/emacs modelines to all source files 
Fixes #fdo30794
Based on bin/add-modelines script (originally posted in mail
1286706307.1871.1399280959@webmail.messagingengine.com)

Signed-off-by: Sebastian Spaeth <Sebastian@SSpaeth.de>
2010-10-13 10:57:18 +02:00

1000 lines
29 KiB
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* 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.
*
************************************************************************/
//------------------------------------------------------------------
//
// date functions add in
//
//------------------------------------------------------------------
#include "datefunc.hxx"
#include "datefunc.hrc"
#include <cppuhelper/factory.hxx>
#include <osl/diagnose.h>
#include <rtl/ustrbuf.hxx>
#include <tools/resmgr.hxx>
#include <tools/rcid.h>
#include <com/sun/star/util/Date.hpp>
using namespace ::com::sun::star;
using namespace ::rtl;
//------------------------------------------------------------------
#define ADDIN_SERVICE "com.sun.star.sheet.AddIn"
#define MY_SERVICE "com.sun.star.sheet.addin.DateFunctions"
#define MY_IMPLNAME "com.sun.star.sheet.addin.DateFunctionsImpl"
//------------------------------------------------------------------
#define STR_FROM_ANSI( s ) OUString( s, strlen( s ), RTL_TEXTENCODING_MS_1252 )
//------------------------------------------------------------------
const sal_uInt32 ScaList::nStartSize = 16;
const sal_uInt32 ScaList::nIncrSize = 16;
ScaList::ScaList() :
pData( new void*[ nStartSize ] ),
nSize( nStartSize ),
nCount( 0 ),
nCurr( 0 )
{
}
ScaList::~ScaList()
{
delete[] pData;
}
void ScaList::_Grow()
{
nSize += nIncrSize;
void** pNewData = new void*[ nSize ];
memcpy( pNewData, pData, nCount * sizeof( void* ) );
delete[] pData;
pData = pNewData;
}
void ScaList::Insert( void* pNew, sal_uInt32 nIndex )
{
if( nIndex >= nCount )
Append( pNew );
else
{
Grow();
void** pIns = pData + nIndex;
memmove( pIns + 1, pIns, (nCount - nIndex) * sizeof( void* ) );
*pIns = pNew;
nCount++;
}
}
//------------------------------------------------------------------
ScaStringList::~ScaStringList()
{
for( OUString* pStr = First(); pStr; pStr = Next() )
delete pStr;
}
//------------------------------------------------------------------
ScaResId::ScaResId( sal_uInt16 nId, ResMgr& rResMgr ) :
ResId( nId, rResMgr )
{
}
//------------------------------------------------------------------
#define UNIQUE sal_False // function name does not exist in Calc
#define DOUBLE sal_True // function name exists in Calc
#define STDPAR sal_False // all parameters are described
#define INTPAR sal_True // first parameter is internal
#define FUNCDATA( FuncName, ParamCount, Category, Double, IntPar ) \
{ "get" #FuncName, DATE_FUNCNAME_##FuncName, DATE_FUNCDESC_##FuncName, DATE_DEFFUNCNAME_##FuncName, ParamCount, Category, Double, IntPar }
const ScaFuncDataBase pFuncDataArr[] =
{
FUNCDATA( DiffWeeks, 3, ScaCat_DateTime, UNIQUE, INTPAR ),
FUNCDATA( DiffMonths, 3, ScaCat_DateTime, UNIQUE, INTPAR ),
FUNCDATA( DiffYears, 3, ScaCat_DateTime, UNIQUE, INTPAR ),
FUNCDATA( IsLeapYear, 1, ScaCat_DateTime, UNIQUE, INTPAR ),
FUNCDATA( DaysInMonth, 1, ScaCat_DateTime, UNIQUE, INTPAR ),
FUNCDATA( DaysInYear, 1, ScaCat_DateTime, UNIQUE, INTPAR ),
FUNCDATA( WeeksInYear, 1, ScaCat_DateTime, UNIQUE, INTPAR ),
FUNCDATA( Rot13, 1, ScaCat_Text, UNIQUE, STDPAR )
};
#undef FUNCDATA
//------------------------------------------------------------------
ScaFuncData::ScaFuncData( const ScaFuncDataBase& rBaseData, ResMgr& rResMgr ) :
aIntName( OUString::createFromAscii( rBaseData.pIntName ) ),
nUINameID( rBaseData.nUINameID ),
nDescrID( rBaseData.nDescrID ),
nCompListID( rBaseData.nCompListID ),
nParamCount( rBaseData.nParamCount ),
eCat( rBaseData.eCat ),
bDouble( rBaseData.bDouble ),
bWithOpt( rBaseData.bWithOpt )
{
ScaResStringArrLoader aArrLoader( RID_DATE_DEFFUNCTION_NAMES, nCompListID, rResMgr );
const ResStringArray& rArr = aArrLoader.GetStringArray();
for( sal_uInt16 nIndex = 0; nIndex < rArr.Count(); nIndex++ )
aCompList.Append( rArr.GetString( nIndex ) );
}
ScaFuncData::~ScaFuncData()
{
}
sal_uInt16 ScaFuncData::GetStrIndex( sal_uInt16 nParam ) const
{
if( !bWithOpt )
nParam++;
return (nParam > nParamCount) ? (nParamCount * 2) : (nParam * 2);
}
//------------------------------------------------------------------
ScaFuncDataList::ScaFuncDataList( ResMgr& rResMgr ) :
nLast( 0xFFFFFFFF )
{
const sal_uInt32 nCnt = sizeof( pFuncDataArr ) / sizeof( ScaFuncDataBase );
for( sal_uInt16 nIndex = 0; nIndex < nCnt; nIndex++ )
Append( new ScaFuncData( pFuncDataArr[ nIndex ], rResMgr ) );
}
ScaFuncDataList::~ScaFuncDataList()
{
for( ScaFuncData* pFData = First(); pFData; pFData = Next() )
delete pFData;
}
const ScaFuncData* ScaFuncDataList::Get( const OUString& rProgrammaticName ) const
{
if( aLastName == rProgrammaticName )
return Get( nLast );
for( sal_uInt32 nIndex = 0; nIndex < Count(); nIndex++ )
{
const ScaFuncData* pCurr = Get( nIndex );
if( pCurr->Is( rProgrammaticName ) )
{
const_cast< ScaFuncDataList* >( this )->aLastName = rProgrammaticName;
const_cast< ScaFuncDataList* >( this )->nLast = nIndex;
return pCurr;
}
}
return NULL;
}
//------------------------------------------------------------------
ScaFuncRes::ScaFuncRes( ResId& rResId, ResMgr& rResMgr, sal_uInt16 nIndex, OUString& rRet ) :
Resource( rResId )
{
rRet = String( ScaResId( nIndex, rResMgr ) );
FreeResource();
}
//------------------------------------------------------------------
//
// entry points for service registration / instantiation
//
//------------------------------------------------------------------
uno::Reference< uno::XInterface > SAL_CALL ScaDateAddIn_CreateInstance(
const uno::Reference< lang::XMultiServiceFactory >& )
{
static uno::Reference< uno::XInterface > xInst = (cppu::OWeakObject*) new ScaDateAddIn();
return xInst;
}
//------------------------------------------------------------------------
extern "C" {
void SAL_CALL component_getImplementationEnvironment(
const sal_Char ** ppEnvTypeName, uno_Environment ** /*ppEnv*/ )
{
*ppEnvTypeName = CPPU_CURRENT_LANGUAGE_BINDING_NAME;
}
sal_Bool SAL_CALL component_writeInfo(
void * /*pServiceManager*/, registry::XRegistryKey * pRegistryKey )
{
if (pRegistryKey)
{
try
{
OUString aImpl = OUString::createFromAscii( "/" );
aImpl += ScaDateAddIn::getImplementationName_Static();
aImpl += OUString::createFromAscii( "/UNO/SERVICES" );
uno::Reference< registry::XRegistryKey > xNewKey(
reinterpret_cast< registry::XRegistryKey* >( pRegistryKey )->createKey( aImpl ) );
uno::Sequence< OUString > aSequ = ScaDateAddIn::getSupportedServiceNames_Static();
const OUString * pArray = aSequ.getConstArray();
for( sal_Int32 i = 0; i < aSequ.getLength(); i++ )
xNewKey->createKey( pArray[i] );
return sal_True;
}
catch (registry::InvalidRegistryException&)
{
OSL_ENSURE( sal_False, "### InvalidRegistryException!" );
}
}
return sal_False;
}
void * SAL_CALL component_getFactory(
const sal_Char * pImplName, void * pServiceManager, void * /*pRegistryKey*/ )
{
void* pRet = 0;
if ( pServiceManager &&
OUString::createFromAscii( pImplName ) == ScaDateAddIn::getImplementationName_Static() )
{
uno::Reference< lang::XSingleServiceFactory > xFactory( cppu::createOneInstanceFactory(
reinterpret_cast< lang::XMultiServiceFactory* >( pServiceManager ),
ScaDateAddIn::getImplementationName_Static(),
ScaDateAddIn_CreateInstance,
ScaDateAddIn::getSupportedServiceNames_Static() ) );
if (xFactory.is())
{
xFactory->acquire();
pRet = xFactory.get();
}
}
return pRet;
}
} // extern C
//------------------------------------------------------------------------
//
// "normal" service implementation
//
//------------------------------------------------------------------------
ScaDateAddIn::ScaDateAddIn() :
pDefLocales( NULL ),
pResMgr( NULL ),
pFuncDataList( NULL )
{
}
ScaDateAddIn::~ScaDateAddIn()
{
if( pFuncDataList )
delete pFuncDataList;
if( pDefLocales )
delete[] pDefLocales;
// pResMgr already deleted (_all_ resource managers are deleted _before_ this dtor is called)
}
static const sal_Char* pLang[] = { "de", "en" };
static const sal_Char* pCoun[] = { "DE", "US" };
static const sal_uInt32 nNumOfLoc = sizeof( pLang ) / sizeof( sal_Char* );
void ScaDateAddIn::InitDefLocales()
{
pDefLocales = new lang::Locale[ nNumOfLoc ];
for( sal_uInt32 nIndex = 0; nIndex < nNumOfLoc; nIndex++ )
{
pDefLocales[ nIndex ].Language = OUString::createFromAscii( pLang[ nIndex ] );
pDefLocales[ nIndex ].Country = OUString::createFromAscii( pCoun[ nIndex ] );
}
}
const lang::Locale& ScaDateAddIn::GetLocale( sal_uInt32 nIndex )
{
if( !pDefLocales )
InitDefLocales();
return (nIndex < sizeof( pLang )) ? pDefLocales[ nIndex ] : aFuncLoc;
}
ResMgr& ScaDateAddIn::GetResMgr() throw( uno::RuntimeException )
{
if( !pResMgr )
{
InitData(); // try to get resource manager
if( !pResMgr )
throw uno::RuntimeException();
}
return *pResMgr;
}
void ScaDateAddIn::InitData()
{
if( pResMgr )
delete pResMgr;
OString aModName( "date" );
pResMgr = ResMgr::CreateResMgr( (const sal_Char*) aModName,
aFuncLoc );
if( pFuncDataList )
delete pFuncDataList;
pFuncDataList = pResMgr ? new ScaFuncDataList( *pResMgr ) : NULL;
if( pDefLocales )
{
delete pDefLocales;
pDefLocales = NULL;
}
}
OUString ScaDateAddIn::GetDisplFuncStr( sal_uInt16 nResId ) throw( uno::RuntimeException )
{
return ScaResStringLoader( RID_DATE_FUNCTION_NAMES, nResId, GetResMgr() ).GetString();
}
OUString ScaDateAddIn::GetFuncDescrStr( sal_uInt16 nResId, sal_uInt16 nStrIndex ) throw( uno::RuntimeException )
{
OUString aRet;
ScaResPublisher aResPubl( ScaResId( RID_DATE_FUNCTION_DESCRIPTIONS, GetResMgr() ) );
ScaResId aResId( nResId, GetResMgr() );
aResId.SetRT( RSC_RESOURCE );
if( aResPubl.IsAvailableRes( aResId ) )
ScaFuncRes aSubRes( aResId, GetResMgr(), nStrIndex, aRet );
aResPubl.FreeResource();
return aRet;
}
//------------------------------------------------------------------------
OUString ScaDateAddIn::getImplementationName_Static()
{
return OUString::createFromAscii( MY_IMPLNAME );
}
uno::Sequence< OUString > ScaDateAddIn::getSupportedServiceNames_Static()
{
uno::Sequence< OUString > aRet( 2 );
OUString* pArray = aRet.getArray();
pArray[0] = OUString::createFromAscii( ADDIN_SERVICE );
pArray[1] = OUString::createFromAscii( MY_SERVICE );
return aRet;
}
// XServiceName
OUString SAL_CALL ScaDateAddIn::getServiceName() throw( uno::RuntimeException )
{
// name of specific AddIn service
return OUString::createFromAscii( MY_SERVICE );
}
// XServiceInfo
OUString SAL_CALL ScaDateAddIn::getImplementationName() throw( uno::RuntimeException )
{
return getImplementationName_Static();
}
sal_Bool SAL_CALL ScaDateAddIn::supportsService( const OUString& aServiceName ) throw( uno::RuntimeException )
{
return aServiceName.equalsAscii( ADDIN_SERVICE ) ||
aServiceName.equalsAscii( MY_SERVICE );
}
uno::Sequence< OUString > SAL_CALL ScaDateAddIn::getSupportedServiceNames() throw( uno::RuntimeException )
{
return getSupportedServiceNames_Static();
}
// XLocalizable
void SAL_CALL ScaDateAddIn::setLocale( const lang::Locale& eLocale ) throw( uno::RuntimeException )
{
aFuncLoc = eLocale;
InitData(); // change of locale invalidates resources!
}
lang::Locale SAL_CALL ScaDateAddIn::getLocale() throw( uno::RuntimeException )
{
return aFuncLoc;
}
//------------------------------------------------------------------
//
// function descriptions start here
//
//------------------------------------------------------------------
// XAddIn
OUString SAL_CALL ScaDateAddIn::getProgrammaticFuntionName( const OUString& ) throw( uno::RuntimeException )
{
// not used by calc
// (but should be implemented for other uses of the AddIn service)
return OUString();
}
OUString SAL_CALL ScaDateAddIn::getDisplayFunctionName( const OUString& aProgrammaticName ) throw( uno::RuntimeException )
{
OUString aRet;
const ScaFuncData* pFData = pFuncDataList->Get( aProgrammaticName );
if( pFData )
{
aRet = GetDisplFuncStr( pFData->GetUINameID() );
if( pFData->IsDouble() )
aRet += STR_FROM_ANSI( "_ADD" );
}
else
{
aRet = STR_FROM_ANSI( "UNKNOWNFUNC_" );
aRet += aProgrammaticName;
}
return aRet;
}
OUString SAL_CALL ScaDateAddIn::getFunctionDescription( const OUString& aProgrammaticName ) throw( uno::RuntimeException )
{
OUString aRet;
const ScaFuncData* pFData = pFuncDataList->Get( aProgrammaticName );
if( pFData )
aRet = GetFuncDescrStr( pFData->GetDescrID(), 1 );
return aRet;
}
OUString SAL_CALL ScaDateAddIn::getDisplayArgumentName(
const OUString& aProgrammaticName, sal_Int32 nArgument ) throw( uno::RuntimeException )
{
OUString aRet;
const ScaFuncData* pFData = pFuncDataList->Get( aProgrammaticName );
if( pFData && (nArgument <= 0xFFFF) )
{
sal_uInt16 nStr = pFData->GetStrIndex( static_cast< sal_uInt16 >( nArgument ) );
if( nStr )
aRet = GetFuncDescrStr( pFData->GetDescrID(), nStr );
else
aRet = STR_FROM_ANSI( "internal" );
}
return aRet;
}
OUString SAL_CALL ScaDateAddIn::getArgumentDescription(
const OUString& aProgrammaticName, sal_Int32 nArgument ) throw( uno::RuntimeException )
{
OUString aRet;
const ScaFuncData* pFData = pFuncDataList->Get( aProgrammaticName );
if( pFData && (nArgument <= 0xFFFF) )
{
sal_uInt16 nStr = pFData->GetStrIndex( static_cast< sal_uInt16 >( nArgument ) );
if( nStr )
aRet = GetFuncDescrStr( pFData->GetDescrID(), nStr + 1 );
else
aRet = STR_FROM_ANSI( "for internal use only" );
}
return aRet;
}
OUString SAL_CALL ScaDateAddIn::getProgrammaticCategoryName(
const OUString& aProgrammaticName ) throw( uno::RuntimeException )
{
OUString aRet;
const ScaFuncData* pFData = pFuncDataList->Get( aProgrammaticName );
if( pFData )
{
switch( pFData->GetCategory() )
{
case ScaCat_DateTime: aRet = STR_FROM_ANSI( "Date&Time" ); break;
case ScaCat_Text: aRet = STR_FROM_ANSI( "Text" ); break;
case ScaCat_Finance: aRet = STR_FROM_ANSI( "Financial" ); break;
case ScaCat_Inf: aRet = STR_FROM_ANSI( "Information" ); break;
case ScaCat_Math: aRet = STR_FROM_ANSI( "Mathematical" ); break;
case ScaCat_Tech: aRet = STR_FROM_ANSI( "Technical" ); break;
default: // to prevent compiler warnings
break;
}
}
if( !aRet.getLength() )
aRet = STR_FROM_ANSI( "Add-In" );
return aRet;
}
OUString SAL_CALL ScaDateAddIn::getDisplayCategoryName(
const OUString& aProgrammaticName ) throw( uno::RuntimeException )
{
return getProgrammaticCategoryName( aProgrammaticName );
}
// XCompatibilityNames
uno::Sequence< sheet::LocalizedName > SAL_CALL ScaDateAddIn::getCompatibilityNames(
const OUString& aProgrammaticName ) throw( uno::RuntimeException )
{
const ScaFuncData* pFData = pFuncDataList->Get( aProgrammaticName );
if( !pFData )
return uno::Sequence< sheet::LocalizedName >( 0 );
const ScaStringList& rStrList = pFData->GetCompNameList();
sal_uInt32 nCount = rStrList.Count();
uno::Sequence< sheet::LocalizedName > aRet( nCount );
sheet::LocalizedName* pArray = aRet.getArray();
for( sal_uInt32 nIndex = 0; nIndex < nCount; nIndex++ )
pArray[ nIndex ] = sheet::LocalizedName( GetLocale( nIndex ), *rStrList.Get( nIndex ) );
return aRet;
}
//------------------------------------------------------------------
//
// function implementation starts here
//
//------------------------------------------------------------------
// auxiliary functions
sal_Bool IsLeapYear( sal_uInt16 nYear )
{
return ((((nYear % 4) == 0) && ((nYear % 100) != 0)) || ((nYear % 400) == 0));
}
sal_uInt16 DaysInMonth( sal_uInt16 nMonth, sal_uInt16 nYear )
{
static sal_uInt16 aDaysInMonth[12] = { 31, 28, 31, 30, 31, 30,
31, 31, 30, 31, 30, 31 };
if ( nMonth != 2 )
return aDaysInMonth[nMonth-1];
else
{
if ( IsLeapYear(nYear) )
return aDaysInMonth[nMonth-1] + 1;
else
return aDaysInMonth[nMonth-1];
}
}
/**
* Convert a date to a count of days starting from 01/01/0001
*
* The internal representation of a Date used in this Addin
* is the number of days between 01/01/0001 and the date
* this function converts a Day , Month, Year representation
* to this internal Date value.
*/
sal_Int32 DateToDays( sal_uInt16 nDay, sal_uInt16 nMonth, sal_uInt16 nYear )
{
sal_Int32 nDays = ((sal_Int32)nYear-1) * 365;
nDays += ((nYear-1) / 4) - ((nYear-1) / 100) + ((nYear-1) / 400);
for( sal_uInt16 i = 1; i < nMonth; i++ )
nDays += DaysInMonth(i,nYear);
nDays += nDay;
return nDays;
}
/**
* Convert a count of days starting from 01/01/0001 to a date
*
* The internal representation of a Date used in this Addin
* is the number of days between 01/01/0001 and the date
* this function converts this internal Date value
* to a Day , Month, Year representation of a Date.
*/
void DaysToDate( sal_Int32 nDays,
sal_uInt16& rDay, sal_uInt16& rMonth, sal_uInt16& rYear )
throw( lang::IllegalArgumentException )
{
if( nDays < 0 )
throw lang::IllegalArgumentException();
sal_Int32 nTempDays;
sal_Int32 i = 0;
sal_Bool bCalc;
do
{
nTempDays = nDays;
rYear = (sal_uInt16)((nTempDays / 365) - i);
nTempDays -= ((sal_Int32) rYear -1) * 365;
nTempDays -= (( rYear -1) / 4) - (( rYear -1) / 100) + ((rYear -1) / 400);
bCalc = sal_False;
if ( nTempDays < 1 )
{
i++;
bCalc = sal_True;
}
else
{
if ( nTempDays > 365 )
{
if ( (nTempDays != 366) || !IsLeapYear( rYear ) )
{
i--;
bCalc = sal_True;
}
}
}
}
while ( bCalc );
rMonth = 1;
while ( (sal_Int32)nTempDays > DaysInMonth( rMonth, rYear ) )
{
nTempDays -= DaysInMonth( rMonth, rYear );
rMonth++;
}
rDay = (sal_uInt16)nTempDays;
}
/**
* Get the null date used by the spreadsheet document
*
* The internal representation of a Date used in this Addin
* is the number of days between 01/01/0001 and the date
* this function returns this internal Date value for the document null date
*
*/
sal_Int32 GetNullDate( const uno::Reference< beans::XPropertySet >& xOptions )
throw( uno::RuntimeException )
{
if (xOptions.is())
{
try
{
uno::Any aAny = xOptions->getPropertyValue(
OUString::createFromAscii( "NullDate" ) );
util::Date aDate;
if ( aAny >>= aDate )
return DateToDays( aDate.Day, aDate.Month, aDate.Year );
}
catch (uno::Exception&)
{
}
}
// no null date available -> no calculations possible
throw uno::RuntimeException();
}
// XDateFunctions
/**
* Get week difference between 2 dates
*
* new Weeks(date1,date2,mode) function for StarCalc
*
* Two modes of operation are provided.
* The first is just a simple division by 7 calculation.
*
* The second calculates the diffence by week of year.
*
* The International Standard IS-8601 has decreed that Monday
* shall be the first day of the week.
*
* A week that lies partly in one year and partly in annother
* is assigned a number in the the year in which most of its days lie.
*
* That means that week 1 of any year is the week that contains the 4. January
*
* The internal representation of a Date used in the Addin is the number of days based on 01/01/0001
*
* A WeekDay can be then calculated by substracting 1 and calculating the rest of
* a division by 7, which gives a 0 - 6 value for Monday - Sunday
*
* Using the 4. January rule explained above the formula
*
* nWeek1= ( nDays1 - nJan4 + ( (nJan4-1) % 7 ) ) / 7 + 1;
*
* calculates a number between 0-53 for each day which is in the same year as nJan4
* where 0 means that this week belonged to the year before.
*
* If a day in the same or annother year is used in this formula this calculates
* an calendar week offset from a given 4. January
*
* nWeek2 = ( nDays2 - nJan4 + ( (nJan4-1) % 7 ) ) / 7 + 1;
*
* The 4.January of first Date Argument can thus be used to calculate
* the week difference by calendar weeks which is then nWeek = nWeek2 - nWeek1
*
* which can be optimized to
*
* nWeek = ( (nDays2-nJan4+((nJan4-1)%7))/7 ) - ( (nDays1-nJan4+((nJan4-1)%7))/7 )
*
* Note: All calculations are operating on the long integer data type
* % is the modulo operator in C which calculates the rest of an Integer division
*
*
* mode 0 is the interval between the dates in month, that is days / 7
*
* mode 1 is the difference by week of year
*
*/
sal_Int32 SAL_CALL ScaDateAddIn::getDiffWeeks(
const uno::Reference< beans::XPropertySet >& xOptions,
sal_Int32 nStartDate, sal_Int32 nEndDate,
sal_Int32 nMode ) throw( uno::RuntimeException, lang::IllegalArgumentException )
{
sal_Int32 nNullDate = GetNullDate( xOptions );
sal_Int32 nDays1 = nStartDate + nNullDate;
sal_Int32 nDays2 = nEndDate + nNullDate;
sal_Int32 nRet;
if ( nMode == 1 )
{
sal_uInt16 nDay,nMonth,nYear;
DaysToDate( nDays1, nDay, nMonth, nYear );
sal_Int32 nJan4 = DateToDays( 4, 1, nYear );
nRet = ( (nDays2-nJan4+((nJan4-1)%7))/7 ) - ( (nDays1-nJan4+((nJan4-1)%7))/7 );
}
else
{
nRet = (nDays2 - nDays1) / 7;
}
return nRet;
}
/**
* Get month difference between 2 dates
* =Month(start, end, mode) Function for StarCalc
*
* two modes are provided
*
* mode 0 is the interval between the dates in month
*
* mode 1 is the difference in calendar month
*/
sal_Int32 SAL_CALL ScaDateAddIn::getDiffMonths(
const uno::Reference< beans::XPropertySet >& xOptions,
sal_Int32 nStartDate, sal_Int32 nEndDate,
sal_Int32 nMode ) throw( uno::RuntimeException, lang::IllegalArgumentException )
{
sal_Int32 nNullDate = GetNullDate( xOptions );
sal_Int32 nDays1 = nStartDate + nNullDate;
sal_Int32 nDays2 = nEndDate + nNullDate;
sal_uInt16 nDay1,nMonth1,nYear1;
sal_uInt16 nDay2,nMonth2,nYear2;
DaysToDate(nDays1,nDay1,nMonth1,nYear1);
DaysToDate(nDays2,nDay2,nMonth2,nYear2);
sal_Int32 nRet = nMonth2 - nMonth1 + (nYear2 - nYear1) * 12;
if ( nMode == 1 || nDays1 == nDays2 ) return nRet;
if ( nDays1 < nDays2 )
{
if ( nDay1 > nDay2 )
{
nRet -= 1;
}
}
else
{
if ( nDay1 < nDay2 )
{
nRet += 1;
}
}
return nRet;
}
/**
* Get Year difference between 2 dates
*
* two modes are provided
*
* mode 0 is the interval between the dates in years
*
* mode 1 is the difference in calendar years
*/
sal_Int32 SAL_CALL ScaDateAddIn::getDiffYears(
const uno::Reference< beans::XPropertySet >& xOptions,
sal_Int32 nStartDate, sal_Int32 nEndDate,
sal_Int32 nMode ) throw( uno::RuntimeException, lang::IllegalArgumentException )
{
if ( nMode != 1 )
return getDiffMonths( xOptions, nStartDate, nEndDate, nMode ) / 12;
sal_Int32 nNullDate = GetNullDate( xOptions );
sal_Int32 nDays1 = nStartDate + nNullDate;
sal_Int32 nDays2 = nEndDate + nNullDate;
sal_uInt16 nDay1,nMonth1,nYear1;
sal_uInt16 nDay2,nMonth2,nYear2;
DaysToDate(nDays1,nDay1,nMonth1,nYear1);
DaysToDate(nDays2,nDay2,nMonth2,nYear2);
return nYear2 - nYear1;
}
/**
* Check if a Date is in a leap year in the Gregorian calendar
*/
sal_Int32 SAL_CALL ScaDateAddIn::getIsLeapYear(
const uno::Reference< beans::XPropertySet >& xOptions,
sal_Int32 nDate ) throw( uno::RuntimeException, lang::IllegalArgumentException )
{
sal_Int32 nNullDate = GetNullDate( xOptions );
sal_Int32 nDays = nDate + nNullDate;
sal_uInt16 nDay, nMonth, nYear;
DaysToDate(nDays,nDay,nMonth,nYear);
return (sal_Int32)IsLeapYear(nYear);
}
/**
* Get the Number of Days in the month for a date
*/
sal_Int32 SAL_CALL ScaDateAddIn::getDaysInMonth(
const uno::Reference<beans::XPropertySet>& xOptions,
sal_Int32 nDate ) throw( uno::RuntimeException, lang::IllegalArgumentException )
{
sal_Int32 nNullDate = GetNullDate( xOptions );
sal_Int32 nDays = nDate + nNullDate;
sal_uInt16 nDay, nMonth, nYear;
DaysToDate(nDays,nDay,nMonth,nYear);
return DaysInMonth( nMonth, nYear );
}
/**
* Get number of days in the year of a date specified
*/
sal_Int32 SAL_CALL ScaDateAddIn::getDaysInYear(
const uno::Reference< beans::XPropertySet >& xOptions,
sal_Int32 nDate ) throw( uno::RuntimeException, lang::IllegalArgumentException )
{
sal_Int32 nNullDate = GetNullDate( xOptions );
sal_Int32 nDays = nDate + nNullDate;
sal_uInt16 nDay, nMonth, nYear;
DaysToDate(nDays,nDay,nMonth,nYear);
return ( IsLeapYear(nYear) ? 366 : 365 );
}
/**
* Get number of weeks in the year for a date
*
* Most years have 52 weeks, but years that start on a Thursday
* and leep years that start on a Wednesday have 53 weeks
*
* The International Standard IS-8601 has decreed that Monday
* shall be the first day of the week.
*
* A WeekDay can be calculated by substracting 1 and calculating the rest of
* a division by 7 from the internal date represention
* which gives a 0 - 6 value for Monday - Sunday
*
* @see #IsLeapYear #WeekNumber
*/
sal_Int32 SAL_CALL ScaDateAddIn::getWeeksInYear(
const uno::Reference< beans::XPropertySet >& xOptions,
sal_Int32 nDate ) throw( uno::RuntimeException, lang::IllegalArgumentException )
{
sal_Int32 nNullDate = GetNullDate( xOptions );
sal_Int32 nDays = nDate + nNullDate;
sal_uInt16 nDay, nMonth, nYear;
DaysToDate(nDays,nDay,nMonth,nYear);
sal_Int32 nJan1WeekDay = ( DateToDays(1,1,nYear) - 1) % 7;
sal_Int32 nRet;
if ( nJan1WeekDay == 3 ) /* Thursday */
nRet = 53;
else if ( nJan1WeekDay == 2 ) /* Wednesday */
nRet = ( IsLeapYear(nYear) ? 53 : 52 );
else
nRet = 52;
return nRet;
}
/**
* Encrypt or decrypt a string using ROT13 algorithm
*
* This function rotates each character by 13 in the alphabet.
* Only the characters 'a' ... 'z' and 'A' ... 'Z' are modified.
*/
OUString SAL_CALL ScaDateAddIn::getRot13( const OUString& aSrcString ) throw( uno::RuntimeException, lang::IllegalArgumentException )
{
OUStringBuffer aBuffer( aSrcString );
for( sal_Int32 nIndex = 0; nIndex < aBuffer.getLength(); nIndex++ )
{
sal_Unicode cChar = aBuffer.charAt( nIndex );
if( ((cChar >= 'a') && (cChar <= 'z') && ((cChar += 13) > 'z')) ||
((cChar >= 'A') && (cChar <= 'Z') && ((cChar += 13) > 'Z')) )
cChar -= 26;
aBuffer.setCharAt( nIndex, cChar );
}
return aBuffer.makeStringAndClear();
}
//------------------------------------------------------------------
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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