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Diffstat (limited to 'contrib/libstdc++/src/codecvt.cc')
| -rw-r--r-- | contrib/libstdc++/src/codecvt.cc | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/contrib/libstdc++/src/codecvt.cc b/contrib/libstdc++/src/codecvt.cc new file mode 100644 index 0000000..032667e --- /dev/null +++ b/contrib/libstdc++/src/codecvt.cc @@ -0,0 +1,202 @@ +// Copyright (C) 2000, 2002 Free Software Foundation, Inc. +// +// This file is part of the GNU ISO C++ Library. This library is free +// software; you can redistribute it and/or modify it under the +// terms of the GNU General Public License as published by the +// Free Software Foundation; either version 2, or (at your option) +// any later version. + +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. + +// You should have received a copy of the GNU General Public License along +// with this library; see the file COPYING. If not, write to the Free +// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, +// USA. + +// As a special exception, you may use this file as part of a free software +// library without restriction. Specifically, if other files instantiate +// templates or use macros or inline functions from this file, or you compile +// this file and link it with other files to produce an executable, this +// file does not by itself cause the resulting executable to be covered by +// the GNU General Public License. This exception does not however +// invalidate any other reasons why the executable file might be covered by +// the GNU General Public License. + +// Written by Benjamin Kosnik <bkoz@cygnus.com> + +#include <locale> + +namespace std +{ +#ifdef _GLIBCPP_USE___ENC_TRAITS + // Definitions for static const data members of __enc_traits. + const int __enc_traits::_S_max_size; +#endif + + codecvt<char, char, mbstate_t>:: + codecvt(size_t __refs) + : __codecvt_abstract_base<char, char, mbstate_t>(__refs) + { } + + codecvt<char, char, mbstate_t>:: + ~codecvt() { } + + codecvt_base::result + codecvt<char, char, mbstate_t>:: + do_out(state_type&, const intern_type* __from, + const intern_type* __from_end, const intern_type*& __from_next, + extern_type* __to, extern_type* __to_end, + extern_type*& __to_next) const + { + size_t __len = min(__from_end - __from, __to_end - __to); + memcpy(__to, __from, __len); + __from_next = __from; + __to_next = __to; + return noconv; + } + + codecvt_base::result + codecvt<char, char, mbstate_t>:: + do_unshift(state_type&, extern_type* __to, + extern_type*, extern_type*& __to_next) const + { + __to_next = __to; + return noconv; + } + + codecvt_base::result + codecvt<char, char, mbstate_t>:: + do_in(state_type&, const extern_type* __from, + const extern_type* __from_end, const extern_type*& __from_next, + intern_type* __to, intern_type* __to_end, + intern_type*& __to_next) const + { + size_t __len = min(__from_end - __from, __to_end - __to); + memcpy(__to, __from, __len); + __from_next = __from; + __to_next = __to; + return noconv; + } + + int + codecvt<char, char, mbstate_t>:: + do_encoding() const throw() + { return 1; } + + bool + codecvt<char, char, mbstate_t>:: + do_always_noconv() const throw() + { return true; } + + int + codecvt<char, char, mbstate_t>:: + do_length (const state_type&, const extern_type* __from, + const extern_type* __end, size_t __max) const + { return min(__max, static_cast<size_t>(__end - __from)); } + + int + codecvt<char, char, mbstate_t>:: + do_max_length() const throw() + { return 1; } + +#ifdef _GLIBCPP_USE_WCHAR_T + // codecvt<wchar_t, char, mbstate_t> required specialization + codecvt<wchar_t, char, mbstate_t>:: + codecvt(size_t __refs) + : __codecvt_abstract_base<wchar_t, char, mbstate_t>(__refs) { } + + codecvt<wchar_t, char, mbstate_t>:: + ~codecvt() { } + + codecvt_base::result + codecvt<wchar_t, char, mbstate_t>:: + do_out(state_type& __state, const intern_type* __from, + const intern_type* __from_end, const intern_type*& __from_next, + extern_type* __to, extern_type* __to_end, + extern_type*& __to_next) const + { + result __ret = error; + size_t __len = min(__from_end - __from, __to_end - __to); + size_t __conv = wcsrtombs(__to, &__from, __len, &__state); + + if (__conv == __len) + { + __from_next = __from; + __to_next = __to + __conv; + __ret = ok; + } + else if (__conv > 0 && __conv < __len) + { + __from_next = __from; + __to_next = __to + __conv; + __ret = partial; + } + else + __ret = error; + + return __ret; + } + + codecvt_base::result + codecvt<wchar_t, char, mbstate_t>:: + do_unshift(state_type&, extern_type* __to, + extern_type*, extern_type*& __to_next) const + { + __to_next = __to; + return noconv; + } + + codecvt_base::result + codecvt<wchar_t, char, mbstate_t>:: + do_in(state_type& __state, const extern_type* __from, + const extern_type* __from_end, const extern_type*& __from_next, + intern_type* __to, intern_type* __to_end, + intern_type*& __to_next) const + { + result __ret = error; + size_t __len = min(__from_end - __from, __to_end - __to); + size_t __conv = mbsrtowcs(__to, &__from, __len, &__state); + + if (__conv == __len) + { + __from_next = __from; + __to_next = __to + __conv; + __ret = ok; + } + else if (__conv > 0 && __conv < __len) + { + __from_next = __from; + __to_next = __to + __conv; + __ret = partial; + } + else + __ret = error; + + return __ret; + } + + int + codecvt<wchar_t, char, mbstate_t>:: + do_encoding() const throw() + { return sizeof(wchar_t); } + + bool + codecvt<wchar_t, char, mbstate_t>:: + do_always_noconv() const throw() + { return false; } + + int + codecvt<wchar_t, char, mbstate_t>:: + do_length(const state_type&, const extern_type* __from, + const extern_type* __end, size_t __max) const + { return min(__max, static_cast<size_t>(__end - __from)); } + + int + codecvt<wchar_t, char, mbstate_t>:: + do_max_length() const throw() + { return 1; } +#endif // _GLIBCPP_USE_WCHAR_T +} // namespace std |
