chaptercollator.cxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#include <cppuhelper/supportsservice.hxx>
#include <chaptercollator.hxx>
#include <com/sun/star/i18n/KCharacterType.hpp>
#include <com/sun/star/i18n/ParseResult.hpp>
#include <com/sun/star/i18n/CharacterClassification.hpp>
 
using namespace ::com::sun::star::lang;
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::i18n;
 
namespace i18npool {
 
ChapterCollator::ChapterCollator( const Reference < XComponentContext >& rxContext ) : CollatorImpl(rxContext)
{
    cclass = CharacterClassification::create( rxContext );
}
 
ChapterCollator::~ChapterCollator()
{
}
 
sal_Int32 SAL_CALL
ChapterCollator::compareString( const OUString& s1, const OUString& s2)
{
    return compareSubstring(s1, 0, s1.getLength(),  s2, 0, s2.getLength());
}
 
#define DIGIT KCharacterType::DIGIT
 
sal_Int32 SAL_CALL
ChapterCollator::compareSubstring( const OUString& str1, sal_Int32 off1, sal_Int32 len1,
    const OUString& str2, sal_Int32 off2, sal_Int32 len2)
{
    if( len1 <= 1 || len2 <= 1 || ! cclass.is() )
        return CollatorImpl::compareSubstring( str1, off1,  len1, str2, off2, len2 );
 
    sal_Int32 i1, i2;
    for (i1 = len1; i1 && (cclass->getCharacterType(str1, off1+i1-1, nLocale) & DIGIT); i1--) ;
    for (i2 = len2; i2 && (cclass->getCharacterType(str2, off2+i2-1, nLocale) & DIGIT); i2--) ;
 
    sal_Int32 ans = CollatorImpl::compareSubstring(str1, off1, i1, str2, off2, i2);
    if( ans != 0 )
        return ans;
 
    static constexpr OUStringLiteral aAddAllowed(u"?");
    ParseResult res1, res2;
    // since parseAnyToken does not take length as parameter, we have to copy
    // it to a temp. string.
    OUString s1 = str1.copy(off1+i1, len1-i1), s2 = str2.copy(off2+i2, len2-i2);
    res1 = cclass->parseAnyToken( s1, 0, nLocale, DIGIT, aAddAllowed, DIGIT, aAddAllowed );
    res2 = cclass->parseAnyToken( s2, 0, nLocale, DIGIT, aAddAllowed, DIGIT, aAddAllowed );
 
    return res1.Value == res2.Value ? 0 : res1.Value > res2.Value ? 1 : -1;
}
 
constexpr OUStringLiteral cChapCollator = u"com.sun.star.i18n.ChapterCollator";
 
OUString SAL_CALL
ChapterCollator::getImplementationName()
{
    return cChapCollator;
}
 
sal_Bool SAL_CALL
ChapterCollator::supportsService(const OUString& rServiceName)
{
    return cppu::supportsService(this, rServiceName);
}
 
Sequence< OUString > SAL_CALL
ChapterCollator::getSupportedServiceNames()
{
    Sequence< OUString > aRet { cChapCollator };
    return aRet;
}
 
}
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