1 // Wrapper for underlying C-language localization -*- C++ -*- 2 3 // Copyright (C) 2001-2014 Free Software Foundation, Inc. 4 // 5 // This file is part of the GNU ISO C++ Library. This library is free 6 // software; you can redistribute it and/or modify it under the 7 // terms of the GNU General Public License as published by the 8 // Free Software Foundation; either version 3, or (at your option) 9 // any later version. 10 11 // This library is distributed in the hope that it will be useful, 12 // but WITHOUT ANY WARRANTY; without even the implied warranty of 13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 // GNU General Public License for more details. 15 16 // Under Section 7 of GPL version 3, you are granted additional 17 // permissions described in the GCC Runtime Library Exception, version 18 // 3.1, as published by the Free Software Foundation. 19 20 // You should have received a copy of the GNU General Public License and 21 // a copy of the GCC Runtime Library Exception along with this program; 22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 23 // <http://www.gnu.org/licenses/>. 24 25 // 26 // ISO C++ 14882: 22.8 Standard locale categories. 27 // 28 29 // Written by Benjamin Kosnik <bkoz@redhat.com> 30 31 #include <locale> 32 #include <stdexcept> 33 #include <limits> 34 #include <langinfo.h> 35 #include <bits/c++locale_internal.h> 36 37 namespace std _GLIBCXX_VISIBILITY(default) 38 { 39 _GLIBCXX_BEGIN_NAMESPACE_VERSION 40 41 template<> 42 void __convert_to_v(const char * __s,float & __v,ios_base::iostate & __err,const __c_locale & __cloc)43 __convert_to_v(const char* __s, float& __v, ios_base::iostate& __err, 44 const __c_locale& __cloc) throw() 45 { 46 char* __sanity; 47 __v = __strtof_l(__s, &__sanity, __cloc); 48 49 // _GLIBCXX_RESOLVE_LIB_DEFECTS 50 // 23. Num_get overflow result. 51 if (__sanity == __s || *__sanity != '\0') 52 { 53 __v = 0.0f; 54 __err = ios_base::failbit; 55 } 56 else if (__v == numeric_limits<float>::infinity()) 57 { 58 __v = numeric_limits<float>::max(); 59 __err = ios_base::failbit; 60 } 61 else if (__v == -numeric_limits<float>::infinity()) 62 { 63 __v = -numeric_limits<float>::max(); 64 __err = ios_base::failbit; 65 } 66 } 67 68 template<> 69 void __convert_to_v(const char * __s,double & __v,ios_base::iostate & __err,const __c_locale & __cloc)70 __convert_to_v(const char* __s, double& __v, ios_base::iostate& __err, 71 const __c_locale& __cloc) throw() 72 { 73 char* __sanity; 74 __v = __strtod_l(__s, &__sanity, __cloc); 75 76 // _GLIBCXX_RESOLVE_LIB_DEFECTS 77 // 23. Num_get overflow result. 78 if (__sanity == __s || *__sanity != '\0') 79 { 80 __v = 0.0; 81 __err = ios_base::failbit; 82 } 83 else if (__v == numeric_limits<double>::infinity()) 84 { 85 __v = numeric_limits<double>::max(); 86 __err = ios_base::failbit; 87 } 88 else if (__v == -numeric_limits<double>::infinity()) 89 { 90 __v = -numeric_limits<double>::max(); 91 __err = ios_base::failbit; 92 } 93 } 94 95 template<> 96 void __convert_to_v(const char * __s,long double & __v,ios_base::iostate & __err,const __c_locale & __cloc)97 __convert_to_v(const char* __s, long double& __v, ios_base::iostate& __err, 98 const __c_locale& __cloc) throw() 99 { 100 char* __sanity; 101 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) 102 // Prefer strtold_l, as __strtold_l isn't prototyped in more recent 103 // glibc versions. 104 __v = strtold_l(__s, &__sanity, __cloc); 105 #else 106 __v = __strtold_l(__s, &__sanity, __cloc); 107 #endif 108 109 // _GLIBCXX_RESOLVE_LIB_DEFECTS 110 // 23. Num_get overflow result. 111 if (__sanity == __s || *__sanity != '\0') 112 { 113 __v = 0.0l; 114 __err = ios_base::failbit; 115 } 116 else if (__v == numeric_limits<long double>::infinity()) 117 { 118 __v = numeric_limits<long double>::max(); 119 __err = ios_base::failbit; 120 } 121 else if (__v == -numeric_limits<long double>::infinity()) 122 { 123 __v = -numeric_limits<long double>::max(); 124 __err = ios_base::failbit; 125 } 126 } 127 128 void _S_create_c_locale(__c_locale & __cloc,const char * __s,__c_locale __old)129 locale::facet::_S_create_c_locale(__c_locale& __cloc, const char* __s, 130 __c_locale __old) 131 { 132 __cloc = __newlocale(1 << LC_ALL, __s, __old); 133 if (!__cloc) 134 { 135 // This named locale is not supported by the underlying OS. 136 __throw_runtime_error(__N("locale::facet::_S_create_c_locale " 137 "name not valid")); 138 } 139 } 140 141 void _S_destroy_c_locale(__c_locale & __cloc)142 locale::facet::_S_destroy_c_locale(__c_locale& __cloc) 143 { 144 if (__cloc && _S_get_c_locale() != __cloc) 145 __freelocale(__cloc); 146 } 147 148 __c_locale _S_clone_c_locale(__c_locale & __cloc)149 locale::facet::_S_clone_c_locale(__c_locale& __cloc) throw() 150 { return __duplocale(__cloc); } 151 152 __c_locale _S_lc_ctype_c_locale(__c_locale __cloc,const char * __s)153 locale::facet::_S_lc_ctype_c_locale(__c_locale __cloc, const char* __s) 154 { 155 __c_locale __dup = __duplocale(__cloc); 156 if (__dup == __c_locale(0)) 157 __throw_runtime_error(__N("locale::facet::_S_lc_ctype_c_locale " 158 "duplocale error")); 159 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) 160 __c_locale __changed = __newlocale(LC_CTYPE_MASK, __s, __dup); 161 #else 162 __c_locale __changed = __newlocale(1 << LC_CTYPE, __s, __dup); 163 #endif 164 if (__changed == __c_locale(0)) 165 { 166 __freelocale(__dup); 167 __throw_runtime_error(__N("locale::facet::_S_lc_ctype_c_locale " 168 "newlocale error")); 169 } 170 return __changed; 171 } 172 173 _GLIBCXX_END_NAMESPACE_VERSION 174 } // namespace 175 176 namespace __gnu_cxx _GLIBCXX_VISIBILITY(default) 177 { 178 _GLIBCXX_BEGIN_NAMESPACE_VERSION 179 180 const char* const category_names[6 + _GLIBCXX_NUM_CATEGORIES] = 181 { 182 "LC_CTYPE", 183 "LC_NUMERIC", 184 "LC_TIME", 185 "LC_COLLATE", 186 "LC_MONETARY", 187 "LC_MESSAGES", 188 "LC_PAPER", 189 "LC_NAME", 190 "LC_ADDRESS", 191 "LC_TELEPHONE", 192 "LC_MEASUREMENT", 193 "LC_IDENTIFICATION" 194 }; 195 196 _GLIBCXX_END_NAMESPACE_VERSION 197 } // namespace 198 199 namespace std _GLIBCXX_VISIBILITY(default) 200 { 201 _GLIBCXX_BEGIN_NAMESPACE_VERSION 202 203 const char* const* const locale::_S_categories = __gnu_cxx::category_names; 204 205 _GLIBCXX_END_NAMESPACE_VERSION 206 } // namespace 207 208 // XXX GLIBCXX_ABI Deprecated 209 #ifdef _GLIBCXX_LONG_DOUBLE_COMPAT 210 #define _GLIBCXX_LDBL_COMPAT(dbl, ldbl) \ 211 extern "C" void ldbl (void) __attribute__ ((alias (#dbl))) 212 _GLIBCXX_LDBL_COMPAT(_ZSt14__convert_to_vIdEvPKcRT_RSt12_Ios_IostateRKP15__locale_struct, _ZSt14__convert_to_vIeEvPKcRT_RSt12_Ios_IostateRKP15__locale_struct); 213 #endif // _GLIBCXX_LONG_DOUBLE_COMPAT 214