casefolding.hxx

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#ifndef INCLUDED_I18NUTIL_CASEFOLDING_HXX
#define INCLUDED_I18NUTIL_CASEFOLDING_HXX
 
#include <sal/types.h>
#include <i18nutil/i18nutildllapi.h>
#include <o3tl/typed_flags_set.hxx>
#include <config_options.h>
 
namespace com::sun::star::lang { struct Locale; }
 
enum class TransliterationFlags;
 
enum class MappingType {
    NONE             = 0x00,
    LowerToUpper     = 0x01,  // Upper to Lower mapping
    UpperToLower     = 0x02,  // Lower to Upper mapping
    ToUpper          = 0x04,  // to Upper mapping
    ToLower          = 0x08,  // to Lower mapping
    ToTitle          = 0x10,  // to Title mapping
    SimpleFolding    = 0x20,  // Simple Case Folding
    FullFolding      = 0x40,  // Full Case Folding
    // for final sigma (where the case-mapping is different for the last letter of a word)
    CasedLetterMask  = LowerToUpper | UpperToLower | ToUpper | ToLower | ToTitle | SimpleFolding | FullFolding,
    NotValue         = 0x80,  // Value field is an address
};
namespace o3tl {
    template<> struct typed_flags<MappingType> : is_typed_flags<MappingType, 0xff> {};
}
 
namespace i18nutil {
 
struct Value
{
    sal_uInt8   type;
    sal_uInt16  value;  // value or address, depend on the type
};
 
struct Mapping
{
    sal_uInt8   type;
    sal_Int8    nmap;
#define NMAPPINGMAX 3
    sal_Unicode map[NMAPPINGMAX];
};      // for Unconditional mapping
 
struct MappingElement
{
    MappingElement()
        : current(0)
    {
        element.type = element.nmap = 0;
    }
    Mapping element;
    sal_Int8 current;
};
 
class UNLESS_MERGELIBS(I18NUTIL_DLLPUBLIC) casefolding
{
public:
    static Mapping getValue(const sal_Unicode* str, sal_Int32 pos, sal_Int32 len, css::lang::Locale const & aLocale, MappingType nMappingType);
    static const Mapping& getConditionalValue(const sal_Unicode* str, sal_Int32 pos, sal_Int32 len, css::lang::Locale const & aLocale, MappingType nMappingType);
    static sal_Unicode getNextChar(const sal_Unicode *str, sal_Int32& idx, sal_Int32 len, MappingElement& e, css::lang::Locale const & aLocale, MappingType nMappingtype, TransliterationFlags moduleLoaded);
 
};
 
}
 
#endif
 
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