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Whole document tree                   codecvt.cc Go to the documentation of this file. // Copyright (C) 2000 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 <bits/std_locale.h> namespace std { #ifdef _GLIBCPP_USE_WCHAR_T // Definitions for static const data members of __enc_traits. const int __enc_traits::_S_max_size; #endif /* _GLIBCPP_USE_WCHAR_T */ 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& /*__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 { 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& /*__state*/, extern_type* __to, extern_type* /*__to_end*/, extern_type*& __to_next) const { __to_next = __to; return noconv; } codecvt_base::result codecvt<char, 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 { 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& /*__state*/, 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& /*__state*/, extern_type* __to, extern_type* /*__to_end*/, 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 0; } 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& /*__state*/, 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