197403Sobrien// Wrapper for underlying C-language localization -*- C++ -*- 297403Sobrien 3169691Skan// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006 4169691Skan// Free Software Foundation, Inc. 597403Sobrien// 697403Sobrien// This file is part of the GNU ISO C++ Library. This library is free 797403Sobrien// software; you can redistribute it and/or modify it under the 897403Sobrien// terms of the GNU General Public License as published by the 997403Sobrien// Free Software Foundation; either version 2, or (at your option) 1097403Sobrien// any later version. 1197403Sobrien 1297403Sobrien// This library is distributed in the hope that it will be useful, 1397403Sobrien// but WITHOUT ANY WARRANTY; without even the implied warranty of 1497403Sobrien// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1597403Sobrien// GNU General Public License for more details. 1697403Sobrien 1797403Sobrien// You should have received a copy of the GNU General Public License along 1897403Sobrien// with this library; see the file COPYING. If not, write to the Free 19169691Skan// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 2097403Sobrien// USA. 2197403Sobrien 2297403Sobrien// As a special exception, you may use this file as part of a free software 2397403Sobrien// library without restriction. Specifically, if other files instantiate 2497403Sobrien// templates or use macros or inline functions from this file, or you compile 2597403Sobrien// this file and link it with other files to produce an executable, this 2697403Sobrien// file does not by itself cause the resulting executable to be covered by 2797403Sobrien// the GNU General Public License. This exception does not however 2897403Sobrien// invalidate any other reasons why the executable file might be covered by 2997403Sobrien// the GNU General Public License. 3097403Sobrien 3197403Sobrien// 3297403Sobrien// ISO C++ 14882: 22.8 Standard locale categories. 3397403Sobrien// 3497403Sobrien 3597403Sobrien// Written by Benjamin Kosnik <bkoz@redhat.com> 3697403Sobrien 37132720Skan#include <cerrno> // For errno 38132720Skan#include <cmath> // For isinf, finite, finitef, fabs 39132720Skan#include <cstdlib> // For strof, strtold 4097403Sobrien#include <locale> 4197403Sobrien 42132720Skan#ifdef _GLIBCXX_HAVE_IEEEFP_H 4397403Sobrien#include <ieeefp.h> 4497403Sobrien#endif 4597403Sobrien 46169691Skan_GLIBCXX_BEGIN_NAMESPACE(std) 47169691Skan 4897403Sobrien // Specializations for all types used in num_get. 4997403Sobrien template<> 5097403Sobrien void 5197403Sobrien __convert_to_v(const char* __s, float& __v, ios_base::iostate& __err, 52132720Skan const __c_locale&) 5397403Sobrien { 54169691Skan // Assumes __s formatted for "C" locale. 55169691Skan errno = 0; 56169691Skan char* __old = strdup(setlocale(LC_ALL, NULL)); 57169691Skan setlocale(LC_ALL, "C"); 58169691Skan char* __sanity; 59146897Skan#if defined(_GLIBCXX_HAVE_STRTOF) 60169691Skan float __f = strtof(__s, &__sanity); 6197403Sobrien#else 62169691Skan double __d = strtod(__s, &__sanity); 63169691Skan float __f = static_cast<float>(__d); 64132720Skan#ifdef _GLIBCXX_HAVE_FINITEF 65169691Skan if (!finitef (__f)) 66169691Skan errno = ERANGE; 67132720Skan#elif defined (_GLIBCXX_HAVE_FINITE) 68169691Skan if (!finite (static_cast<double> (__f))) 69169691Skan errno = ERANGE; 70132720Skan#elif defined (_GLIBCXX_HAVE_ISINF) 71169691Skan if (isinf (static_cast<double> (__f))) 72169691Skan errno = ERANGE; 7397403Sobrien#else 74169691Skan if (fabs(__d) > numeric_limits<float>::max()) 75169691Skan errno = ERANGE; 7697403Sobrien#endif 7797403Sobrien#endif 78169691Skan if (__sanity != __s && errno != ERANGE) 79169691Skan __v = __f; 80169691Skan else 81169691Skan __err |= ios_base::failbit; 82169691Skan setlocale(LC_ALL, __old); 83169691Skan free(__old); 8497403Sobrien } 8597403Sobrien 8697403Sobrien template<> 8797403Sobrien void 8897403Sobrien __convert_to_v(const char* __s, double& __v, ios_base::iostate& __err, 89132720Skan const __c_locale&) 9097403Sobrien { 91169691Skan // Assumes __s formatted for "C" locale. 92169691Skan errno = 0; 93169691Skan char* __old = strdup(setlocale(LC_ALL, NULL)); 94169691Skan setlocale(LC_ALL, "C"); 95169691Skan char* __sanity; 96169691Skan double __d = strtod(__s, &__sanity); 97169691Skan if (__sanity != __s && errno != ERANGE) 98169691Skan __v = __d; 99169691Skan else 100169691Skan __err |= ios_base::failbit; 101169691Skan setlocale(LC_ALL, __old); 102169691Skan free(__old); 10397403Sobrien } 10497403Sobrien 10597403Sobrien template<> 10697403Sobrien void 10797403Sobrien __convert_to_v(const char* __s, long double& __v, 108132720Skan ios_base::iostate& __err, const __c_locale&) 10997403Sobrien { 110169691Skan // Assumes __s formatted for "C" locale. 111169691Skan errno = 0; 112169691Skan char* __old = strdup(setlocale(LC_ALL, NULL)); 113169691Skan setlocale(LC_ALL, "C"); 114146897Skan#if defined(_GLIBCXX_HAVE_STRTOLD) 115169691Skan char* __sanity; 116169691Skan long double __ld = strtold(__s, &__sanity); 117169691Skan if (__sanity != __s && errno != ERANGE) 118169691Skan __v = __ld; 11997403Sobrien#else 120169691Skan typedef char_traits<char>::int_type int_type; 121169691Skan long double __ld; 122169691Skan int __p = sscanf(__s, "%Lf", &__ld); 123169691Skan if (__p && static_cast<int_type>(__p) != char_traits<char>::eof() 124169691Skan && errno != ERANGE) 125169691Skan __v = __ld; 12697403Sobrien#endif 127169691Skan else 128169691Skan __err |= ios_base::failbit; 129169691Skan setlocale(LC_ALL, __old); 130169691Skan free(__old); 13197403Sobrien } 13297403Sobrien 13397403Sobrien void 134132720Skan locale::facet::_S_create_c_locale(__c_locale& __cloc, const char* __s, 13597403Sobrien __c_locale) 136132720Skan { 137132720Skan // Currently, the generic model only supports the "C" locale. 138132720Skan // See http://gcc.gnu.org/ml/libstdc++/2003-02/msg00345.html 139132720Skan __cloc = NULL; 140132720Skan if (strcmp(__s, "C")) 141132720Skan __throw_runtime_error(__N("locale::facet::_S_create_c_locale " 142132720Skan "name not valid")); 143132720Skan } 14497403Sobrien 14597403Sobrien void 14697403Sobrien locale::facet::_S_destroy_c_locale(__c_locale& __cloc) 14797403Sobrien { __cloc = NULL; } 14897403Sobrien 14997403Sobrien __c_locale 15097403Sobrien locale::facet::_S_clone_c_locale(__c_locale&) 15197403Sobrien { return __c_locale(); } 152107606Sobrien 153169691Skan_GLIBCXX_END_NAMESPACE 154169691Skan 155169691Skan_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx) 156169691Skan 157132720Skan const char* const category_names[6 + _GLIBCXX_NUM_CATEGORIES] = 158107606Sobrien { 159107606Sobrien "LC_CTYPE", 160117397Skan "LC_NUMERIC", 161117397Skan "LC_TIME", 162107606Sobrien "LC_COLLATE", 163107606Sobrien "LC_MONETARY", 164107606Sobrien "LC_MESSAGES" 165107606Sobrien }; 166132720Skan 167169691Skan_GLIBCXX_END_NAMESPACE 168169691Skan 169169691Skan_GLIBCXX_BEGIN_NAMESPACE(std) 170169691Skan 171132720Skan const char* const* const locale::_S_categories = __gnu_cxx::category_names; 172169691Skan 173169691Skan_GLIBCXX_END_NAMESPACE 174169691Skan 175169691Skan// XXX GLIBCXX_ABI Deprecated 176169691Skan#ifdef _GLIBCXX_LONG_DOUBLE_COMPAT 177169691Skan#define _GLIBCXX_LDBL_COMPAT(dbl, ldbl) \ 178169691Skan extern "C" void ldbl (void) __attribute__ ((alias (#dbl))) 179169691Skan_GLIBCXX_LDBL_COMPAT(_ZSt14__convert_to_vIdEvPKcRT_RSt12_Ios_IostateRKPi, _ZSt14__convert_to_vIeEvPKcRT_RSt12_Ios_IostateRKPi); 180169691Skan#endif // _GLIBCXX_LONG_DOUBLE_COMPAT 181