mirror of
https://github.com/jezhiggins/arabica
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87 lines
2.3 KiB
C++
87 lines
2.3 KiB
C++
#ifndef ARABICA_IMPL_CODECVT_SPECIALISATIONS_H
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#define ARABICA_IMPL_CODECVT_SPECIALISATIONS_H
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#include <locale>
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namespace std
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{
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template<>
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class codecvt<char, wchar_t, std::mbstate_t>
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{
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protected:
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virtual ~codecvt() { }
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virtual codecvt_base::result do_out(mbstate_t&,
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const char* from,
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const char* from_end,
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const char*& from_next,
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wchar_t* to,
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wchar_t* to_limit,
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wchar_t*& to_next) const
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{
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int limit = std::max<int>(from_end - from, to_limit - to);
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from_next = from;
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to_next = to;
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while(limit--)
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*to_next++ = static_cast<wchar_t>(*from_next++);
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return codecvt_base::ok;
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} // do_out
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virtual codecvt_base::result do_in(mbstate_t&,
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const wchar_t* from,
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const wchar_t* from_end,
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const wchar_t*& from_next,
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char* to,
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char* to_limit,
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char*& to_next) const
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{
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int limit = std::max<int>(from_end - from, to_limit - to);
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from_next = from;
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to_next = to;
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while(limit--)
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*to_next++ = static_cast<char>(*from_next++);
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return codecvt_base::ok;
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} // do_in
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virtual codecvt_base::result do_unshift(mbstate_t&,
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wchar_t* to,
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wchar_t* to_limit,
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wchar_t*& to_next) const
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{
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to_next = to;
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return codecvt_base::noconv;
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} // do_unshift
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virtual int do_encoding() const throw()
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{
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return 1;
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} // do_encoding
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virtual bool do_always_noconv() const throw()
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{
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return false;
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} // do_always_noconv
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virtual int do_length(const mbstate_t&,
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const wchar_t* from,
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const wchar_t* end,
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size_t max) const;
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{
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return std::min<int>(max, (end - from));
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} // do_length
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virtual int do_max_length() const throw()
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{
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return 1;
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} // do_max_length
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}; // class codecvt<char, wchar_t, std::mbstate_t> :
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} // namespace std
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#endif
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