libreoffice/sc/source/core/tool/unitconv.cxx

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#include <com/sun/star/uno/Any.hxx>
#include <com/sun/star/uno/Sequence.hxx>

#include "unitconv.hxx"
#include "global.hxx"
#include "viewopti.hxx"         //! move ScLinkConfigItem to separate header!

using namespace utl;
using namespace com::sun::star::uno;

using ::rtl::OUString;

// --------------------------------------------------------------------

const sal_Unicode cDelim = 0x01;        // Delimiter zwischen From und To


// --- ScUnitConverterData --------------------------------------------

ScUnitConverterData::ScUnitConverterData(
    const rtl::OUString& rFromUnit, const rtl::OUString& rToUnit, double fValue ) :
    maIndexString(BuildIndexString(rFromUnit, rToUnit)),
    mfValue(fValue) {}

ScUnitConverterData::ScUnitConverterData( const ScUnitConverterData& r ) :
    maIndexString(r.maIndexString),
    mfValue(r.mfValue) {}

ScUnitConverterData::~ScUnitConverterData() {}

double ScUnitConverterData::GetValue() const
{
    return mfValue;
}

const rtl::OUString& ScUnitConverterData::GetIndexString() const
{
    return maIndexString;
}

rtl::OUString ScUnitConverterData::BuildIndexString(
    const rtl::OUString& rFromUnit, const rtl::OUString& rToUnit )
{
    rtl::OUStringBuffer aBuf(rFromUnit);
    aBuf.append(cDelim);
    aBuf.append(rToUnit);
    return aBuf.makeStringAndClear();
}

// --- ScUnitConverter ------------------------------------------------

#define CFGPATH_UNIT        "Office.Calc/UnitConversion"
#define CFGSTR_UNIT_FROM    "FromUnit"
#define CFGSTR_UNIT_TO      "ToUnit"
#define CFGSTR_UNIT_FACTOR  "Factor"

ScUnitConverter::ScUnitConverter()
{
    //  read from configuration - "convert.ini" is no longer used
    //! config item as member to allow change of values

    ScLinkConfigItem aConfigItem( OUString(RTL_CONSTASCII_USTRINGPARAM( CFGPATH_UNIT )) );

    // empty node name -> use the config item's path itself
    OUString aEmptyString;
    Sequence<OUString> aNodeNames = aConfigItem.GetNodeNames( aEmptyString );

    long nNodeCount = aNodeNames.getLength();
    if ( nNodeCount )
    {
        const OUString* pNodeArray = aNodeNames.getConstArray();
        Sequence<OUString> aValNames( nNodeCount * 3 );
        OUString* pValNameArray = aValNames.getArray();
        const OUString sSlash('/');

        long nIndex = 0;
        for (long i=0; i<nNodeCount; i++)
        {
            OUString sPrefix = pNodeArray[i];
            sPrefix += sSlash;

            pValNameArray[nIndex] = sPrefix;
            pValNameArray[nIndex++] += OUString(RTL_CONSTASCII_USTRINGPARAM( CFGSTR_UNIT_FROM ));
            pValNameArray[nIndex] = sPrefix;
            pValNameArray[nIndex++] += OUString(RTL_CONSTASCII_USTRINGPARAM( CFGSTR_UNIT_TO ));
            pValNameArray[nIndex] = sPrefix;
            pValNameArray[nIndex++] += OUString(RTL_CONSTASCII_USTRINGPARAM( CFGSTR_UNIT_FACTOR ));
        }

        Sequence<Any> aProperties = aConfigItem.GetProperties(aValNames);

        if (aProperties.getLength() == aValNames.getLength())
        {
            const Any* pProperties = aProperties.getConstArray();

            OUString sFromUnit;
            OUString sToUnit;
            double fFactor = 0;

            nIndex = 0;
            for (long i=0; i<nNodeCount; i++)
            {
                pProperties[nIndex++] >>= sFromUnit;
                pProperties[nIndex++] >>= sToUnit;
                pProperties[nIndex++] >>= fFactor;

                ScUnitConverterData* pNew = new ScUnitConverterData( sFromUnit, sToUnit, fFactor );
                rtl::OUString aIndex  = pNew->GetIndexString();
                maData.insert(aIndex, pNew);
            }
        }
    }
}

ScUnitConverter::~ScUnitConverter() {}

bool ScUnitConverter::GetValue(
    double& fValue, const rtl::OUString& rFromUnit, const rtl::OUString& rToUnit ) const
{
    rtl::OUString aIndex = ScUnitConverterData::BuildIndexString(rFromUnit, rToUnit);
    MapType::const_iterator it = maData.find(aIndex);
    if (it == maData.end())
    {
        fValue = 1.0;
        return false;
    }

    fValue = it->second->GetValue();
    return true;
}


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