dbcharset.hxx

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#ifndef INCLUDED_CONNECTIVITY_DBCHARSET_HXX
#define INCLUDED_CONNECTIVITY_DBCHARSET_HXX
 
#include <sal/config.h>
 
#include <set>
 
#include <rtl/textenc.h>
#include <rtl/tencinfo.h>
#include <rtl/ustring.hxx>
#include <connectivity/dbtoolsdllapi.hxx>
 
 
namespace dbtools
{
 
 
    //= OCharsetMap
 
    class OOO_DLLPUBLIC_DBTOOLS OCharsetMap
    {
    protected:
        typedef std::set<rtl_TextEncoding> TextEncBag;
 
        TextEncBag  m_aEncodings;
 
    public:
        class CharsetIterator;
        friend class OCharsetMap::CharsetIterator;
        typedef CharsetIterator iterator;
        typedef CharsetIterator const_iterator;
 
        OCharsetMap();
        virtual ~OCharsetMap();
 
        CharsetIterator find(const rtl_TextEncoding _eEncoding) const;
        CharsetIterator findIanaName(std::u16string_view _rIanaName) const;
 
        CharsetIterator begin() const;
        CharsetIterator end() const;
 
    protected:
        // needed because we want to call a virtual method during construction
                void lateConstruct();
        void ensureConstructed( ) const { if ( m_aEncodings.empty() ) const_cast< OCharsetMap* >( this )->lateConstruct(); }
 
        virtual bool approveEncoding( const rtl_TextEncoding _eEncoding, const rtl_TextEncodingInfo& _rInfo ) const;
    };
 
 
    //- CharsetIteratorDerefHelper
 
    class OOO_DLLPUBLIC_DBTOOLS CharsetIteratorDerefHelper
    {
        friend class OCharsetMap::CharsetIterator;
 
        rtl_TextEncoding    m_eEncoding;
        OUString     m_aIanaName;
 
    public:
        CharsetIteratorDerefHelper(const CharsetIteratorDerefHelper& _rSource);
 
        rtl_TextEncoding    getEncoding() const { return m_eEncoding; }
        const OUString&     getIanaName() const { return m_aIanaName; }
 
    protected:
        CharsetIteratorDerefHelper( const rtl_TextEncoding _eEncoding, OUString _sIanaName );
 
    };
 
 
    //- OCharsetMap::CharsetIterator
 
    class OOO_DLLPUBLIC_DBTOOLS OCharsetMap::CharsetIterator
    {
        friend class OCharsetMap;
 
        friend OOO_DLLPUBLIC_DBTOOLS bool operator==(const CharsetIterator& lhs, const CharsetIterator& rhs);
        friend bool operator!=(const CharsetIterator& lhs, const CharsetIterator& rhs) { return !(lhs == rhs); }
 
//      friend sal_Int32 operator-(const CharsetIterator& lhs, const CharsetIterator& rhs);
 
        const OCharsetMap*                      m_pContainer;
        OCharsetMap::TextEncBag::const_iterator m_aPos;
 
    public:
        CharsetIteratorDerefHelper operator*() const;
        // no -> operator
        // this would require us to a) store CharsetIteratorDerefHelper instances ourself so that we
        // can return a pointer or b) introduce a -> operator on the CharsetIteratorDerefHelper, too.
 
        const CharsetIterator&  operator++();
 
        const CharsetIterator&  operator--();
 
    protected:
        CharsetIterator(const OCharsetMap* _pContainer, OCharsetMap::TextEncBag::const_iterator _aPos );
    };
 
 
}   // namespace dbtools
 
 
#endif // INCLUDED_CONNECTIVITY_DBCHARSET_HXX
 
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