1 // Copyright (C) 2000, 2002, 2004, 2005 Free Software Foundation, Inc. 2 // 3 // This file is part of the GNU ISO C++ Library. This library is free 4 // software; you can redistribute it and/or modify it under the 5 // terms of the GNU General Public License as published by the 6 // Free Software Foundation; either version 2, or (at your option) 7 // any later version. 8 9 // This library is distributed in the hope that it will be useful, 10 // but WITHOUT ANY WARRANTY; without even the implied warranty of 11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 // GNU General Public License for more details. 13 14 // You should have received a copy of the GNU General Public License along 15 // with this library; see the file COPYING. If not, write to the Free 16 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 17 // USA. 18 19 // As a special exception, you may use this file as part of a free software 20 // library without restriction. Specifically, if other files instantiate 21 // templates or use macros or inline functions from this file, or you compile 22 // this file and link it with other files to produce an executable, this 23 // file does not by itself cause the resulting executable to be covered by 24 // the GNU General Public License. This exception does not however 25 // invalidate any other reasons why the executable file might be covered by 26 // the GNU General Public License. 27 28 // Written by Benjamin Kosnik <bkoz@redhat.com> 29 30 #include <locale> 31 32 _GLIBCXX_BEGIN_NAMESPACE(std) 33 34 // Definitions for locale::id of standard facets that are specialized. 35 locale::id codecvt<char, char, mbstate_t>::id; 36 37 #ifdef _GLIBCXX_USE_WCHAR_T 38 locale::id codecvt<wchar_t, char, mbstate_t>::id; 39 #endif 40 41 codecvt<char, char, mbstate_t>:: codecvt(size_t __refs)42 codecvt(size_t __refs) 43 : __codecvt_abstract_base<char, char, mbstate_t>(__refs), 44 _M_c_locale_codecvt(_S_get_c_locale()) 45 { } 46 47 codecvt<char, char, mbstate_t>:: codecvt(__c_locale __cloc,size_t __refs)48 codecvt(__c_locale __cloc, size_t __refs) 49 : __codecvt_abstract_base<char, char, mbstate_t>(__refs), 50 _M_c_locale_codecvt(_S_clone_c_locale(__cloc)) 51 { } 52 53 codecvt<char, char, mbstate_t>:: ~codecvt()54 ~codecvt() 55 { _S_destroy_c_locale(_M_c_locale_codecvt); } 56 57 codecvt_base::result 58 codecvt<char, char, mbstate_t>:: do_out(state_type &,const intern_type * __from,const intern_type *,const intern_type * & __from_next,extern_type * __to,extern_type *,extern_type * & __to_next) const59 do_out(state_type&, const intern_type* __from, 60 const intern_type*, const intern_type*& __from_next, 61 extern_type* __to, extern_type*, 62 extern_type*& __to_next) const 63 { 64 // _GLIBCXX_RESOLVE_LIB_DEFECTS 65 // According to the resolution of DR19, "If returns noconv [...] 66 // there are no changes to the values in [to, to_limit)." 67 __from_next = __from; 68 __to_next = __to; 69 return noconv; 70 } 71 72 codecvt_base::result 73 codecvt<char, char, mbstate_t>:: do_unshift(state_type &,extern_type * __to,extern_type *,extern_type * & __to_next) const74 do_unshift(state_type&, extern_type* __to, 75 extern_type*, extern_type*& __to_next) const 76 { 77 __to_next = __to; 78 return noconv; 79 } 80 81 codecvt_base::result 82 codecvt<char, char, mbstate_t>:: do_in(state_type &,const extern_type * __from,const extern_type *,const extern_type * & __from_next,intern_type * __to,intern_type *,intern_type * & __to_next) const83 do_in(state_type&, const extern_type* __from, 84 const extern_type*, const extern_type*& __from_next, 85 intern_type* __to, intern_type*, intern_type*& __to_next) const 86 { 87 // _GLIBCXX_RESOLVE_LIB_DEFECTS 88 // According to the resolution of DR19, "If returns noconv [...] 89 // there are no changes to the values in [to, to_limit)." 90 __from_next = __from; 91 __to_next = __to; 92 return noconv; 93 } 94 95 int 96 codecvt<char, char, mbstate_t>:: do_encoding() const97 do_encoding() const throw() 98 { return 1; } 99 100 bool 101 codecvt<char, char, mbstate_t>:: do_always_noconv() const102 do_always_noconv() const throw() 103 { return true; } 104 105 int 106 codecvt<char, char, mbstate_t>:: do_length(state_type &,const extern_type * __from,const extern_type * __end,size_t __max) const107 do_length (state_type&, const extern_type* __from, 108 const extern_type* __end, size_t __max) const 109 { 110 size_t __d = static_cast<size_t>(__end - __from); 111 return std::min(__max, __d); 112 } 113 114 int 115 codecvt<char, char, mbstate_t>:: do_max_length() const116 do_max_length() const throw() 117 { return 1; } 118 119 #ifdef _GLIBCXX_USE_WCHAR_T 120 // codecvt<wchar_t, char, mbstate_t> required specialization 121 codecvt<wchar_t, char, mbstate_t>:: codecvt(size_t __refs)122 codecvt(size_t __refs) 123 : __codecvt_abstract_base<wchar_t, char, mbstate_t>(__refs), 124 _M_c_locale_codecvt(_S_get_c_locale()) 125 { } 126 127 codecvt<wchar_t, char, mbstate_t>:: codecvt(__c_locale __cloc,size_t __refs)128 codecvt(__c_locale __cloc, size_t __refs) 129 : __codecvt_abstract_base<wchar_t, char, mbstate_t>(__refs), 130 _M_c_locale_codecvt(_S_clone_c_locale(__cloc)) 131 { } 132 133 codecvt<wchar_t, char, mbstate_t>:: ~codecvt()134 ~codecvt() 135 { _S_destroy_c_locale(_M_c_locale_codecvt); } 136 137 codecvt_base::result 138 codecvt<wchar_t, char, mbstate_t>:: do_unshift(state_type &,extern_type * __to,extern_type *,extern_type * & __to_next) const139 do_unshift(state_type&, extern_type* __to, 140 extern_type*, extern_type*& __to_next) const 141 { 142 // XXX Probably wrong for stateful encodings 143 __to_next = __to; 144 return noconv; 145 } 146 147 bool 148 codecvt<wchar_t, char, mbstate_t>:: do_always_noconv() const149 do_always_noconv() const throw() 150 { return false; } 151 #endif // _GLIBCXX_USE_WCHAR_T 152 153 _GLIBCXX_END_NAMESPACE 154