Api-TextCodec.h

/* Copyright (C) 2008 Marc Boris Duerner
   SPDX-License-Identifier: LGPL-2.1-or-later WITH mif-exception
*/
 
#ifndef PT_API_TEXTCODEC_H
#define PT_API_TEXTCODEC_H
 
#include <Pt/Api.h>
#include <Pt/Locale.h>
#include <Pt/String.h>
 
namespace Pt {

template <typename CharT, typename ByteT>
class TextCodec : public std::codecvt<T, B, Pt::MBState>
{   
    public:
        typedef CharT intern_type;

        typedef ByteT extern_type;

        typedef MBState state_type; 
 
    public:
        TextCodec(std::size_t ref = 0);

        result in(MBState& s, 
                  const ByteT* fbeg, const ByteT* fend, const ByteT*& fnext,
                  CharT* tbeg, CharT* tend, CharT*& tnext) const;

        result out(MBState& state, 
                   const CharT* fbeg, const CharT* fend, const CharT*& fnext,
                   ByteT* tbeg, ByteT* tend, ByteT*& tnext) const;

        result unshift(MBState& state, 
                       ByteT* to, ByteT* to_end, ByteT*& to_next) const;

        int encoding() const;

        bool always_noconv() const;

        int length(MBState& state, 
                   const ByteT* from, const ByteT* end, std::size_t max) const;

        int max_length() const;
 
    public:
        virtual ~TextCodec()
        {}

        std::size_t refs() const
        { return _refs; }
 
    private:
        std::size_t _refs;
};
 
}
 
#endif