203 lines
5.7 KiB
C++
203 lines
5.7 KiB
C++
// Copyright (C) 2000, 2002 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 2, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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// As a special exception, you may use this file as part of a free software
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// library without restriction. Specifically, if other files instantiate
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// templates or use macros or inline functions from this file, or you compile
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// this file and link it with other files to produce an executable, this
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// file does not by itself cause the resulting executable to be covered by
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// the GNU General Public License. This exception does not however
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// invalidate any other reasons why the executable file might be covered by
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// the GNU General Public License.
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// Written by Benjamin Kosnik <bkoz@cygnus.com>
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#include <locale>
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namespace std
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{
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#ifdef _GLIBCPP_USE___ENC_TRAITS
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// Definitions for static const data members of __enc_traits.
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const int __enc_traits::_S_max_size;
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#endif
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codecvt<char, char, mbstate_t>::
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codecvt(size_t __refs)
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: __codecvt_abstract_base<char, char, mbstate_t>(__refs)
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{ }
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codecvt<char, char, mbstate_t>::
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~codecvt() { }
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codecvt_base::result
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codecvt<char, char, mbstate_t>::
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do_out(state_type&, const intern_type* __from,
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const intern_type* __from_end, const intern_type*& __from_next,
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extern_type* __to, extern_type* __to_end,
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extern_type*& __to_next) const
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{
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size_t __len = min(__from_end - __from, __to_end - __to);
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memcpy(__to, __from, __len);
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__from_next = __from;
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__to_next = __to;
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return noconv;
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}
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codecvt_base::result
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codecvt<char, char, mbstate_t>::
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do_unshift(state_type&, extern_type* __to,
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extern_type*, extern_type*& __to_next) const
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{
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__to_next = __to;
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return noconv;
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}
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codecvt_base::result
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codecvt<char, char, mbstate_t>::
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do_in(state_type&, const extern_type* __from,
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const extern_type* __from_end, const extern_type*& __from_next,
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intern_type* __to, intern_type* __to_end,
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intern_type*& __to_next) const
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{
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size_t __len = min(__from_end - __from, __to_end - __to);
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memcpy(__to, __from, __len);
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__from_next = __from;
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__to_next = __to;
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return noconv;
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}
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int
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codecvt<char, char, mbstate_t>::
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do_encoding() const throw()
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{ return 1; }
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bool
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codecvt<char, char, mbstate_t>::
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do_always_noconv() const throw()
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{ return true; }
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int
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codecvt<char, char, mbstate_t>::
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do_length (const state_type&, const extern_type* __from,
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const extern_type* __end, size_t __max) const
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{ return min(__max, static_cast<size_t>(__end - __from)); }
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int
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codecvt<char, char, mbstate_t>::
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do_max_length() const throw()
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{ return 1; }
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#ifdef _GLIBCPP_USE_WCHAR_T
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// codecvt<wchar_t, char, mbstate_t> required specialization
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codecvt<wchar_t, char, mbstate_t>::
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codecvt(size_t __refs)
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: __codecvt_abstract_base<wchar_t, char, mbstate_t>(__refs) { }
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codecvt<wchar_t, char, mbstate_t>::
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~codecvt() { }
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codecvt_base::result
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codecvt<wchar_t, char, mbstate_t>::
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do_out(state_type& __state, const intern_type* __from,
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const intern_type* __from_end, const intern_type*& __from_next,
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extern_type* __to, extern_type* __to_end,
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extern_type*& __to_next) const
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{
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result __ret = error;
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size_t __len = min(__from_end - __from, __to_end - __to);
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size_t __conv = wcsrtombs(__to, &__from, __len, &__state);
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if (__conv == __len)
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{
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__from_next = __from;
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__to_next = __to + __conv;
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__ret = ok;
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}
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else if (__conv > 0 && __conv < __len)
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{
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__from_next = __from;
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__to_next = __to + __conv;
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__ret = partial;
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}
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else
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__ret = error;
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return __ret;
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}
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codecvt_base::result
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codecvt<wchar_t, char, mbstate_t>::
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do_unshift(state_type&, extern_type* __to,
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extern_type*, extern_type*& __to_next) const
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{
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__to_next = __to;
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return noconv;
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}
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codecvt_base::result
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codecvt<wchar_t, char, mbstate_t>::
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do_in(state_type& __state, const extern_type* __from,
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const extern_type* __from_end, const extern_type*& __from_next,
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intern_type* __to, intern_type* __to_end,
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intern_type*& __to_next) const
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{
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result __ret = error;
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size_t __len = min(__from_end - __from, __to_end - __to);
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size_t __conv = mbsrtowcs(__to, &__from, __len, &__state);
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if (__conv == __len)
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{
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__from_next = __from;
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__to_next = __to + __conv;
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__ret = ok;
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}
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else if (__conv > 0 && __conv < __len)
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{
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__from_next = __from;
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__to_next = __to + __conv;
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__ret = partial;
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}
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else
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__ret = error;
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return __ret;
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}
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int
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codecvt<wchar_t, char, mbstate_t>::
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do_encoding() const throw()
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{ return sizeof(wchar_t); }
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bool
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codecvt<wchar_t, char, mbstate_t>::
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do_always_noconv() const throw()
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{ return false; }
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int
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codecvt<wchar_t, char, mbstate_t>::
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do_length(const state_type&, const extern_type* __from,
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const extern_type* __end, size_t __max) const
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{ return min(__max, static_cast<size_t>(__end - __from)); }
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int
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codecvt<wchar_t, char, mbstate_t>::
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do_max_length() const throw()
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{ return 1; }
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#endif // _GLIBCPP_USE_WCHAR_T
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} // namespace std
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