// std::messages implementation details, GNU version -*- C++ -*- // Copyright (C) 2001-2017 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 3, 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. // Under Section 7 of GPL version 3, you are granted additional // permissions described in the GCC Runtime Library Exception, version // 3.1, as published by the Free Software Foundation. // You should have received a copy of the GNU General Public License and // a copy of the GCC Runtime Library Exception along with this program; // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see // . // // ISO C++ 14882: 22.2.7.1.2 messages virtual functions // // Written by Benjamin Kosnik #include #include #include // std::free #include // ::strdup namespace { using namespace std; const char* get_glibc_msg(__c_locale __locale_messages __attribute__((unused)), const char* __name_messages __attribute__((unused)), const char* __domainname, const char* __dfault) { #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) std::__c_locale __old = __uselocale(__locale_messages); const char* __msg = dgettext(__domainname, __dfault); __uselocale(__old); return __msg; #else if (char* __sav = strdup(setlocale(LC_ALL, 0))) { setlocale(LC_ALL, __name_messages); const char* __msg = dgettext(__domainname, __dfault); setlocale(LC_ALL, __sav); free(__sav); return __msg; } return __dfault; #endif } } namespace std _GLIBCXX_VISIBILITY(default) { _GLIBCXX_BEGIN_NAMESPACE_VERSION // Specializations. template<> typename messages::catalog messages::do_open(const basic_string& __s, const locale& __l) const { typedef codecvt __codecvt_t; const __codecvt_t& __codecvt = use_facet<__codecvt_t>(__l); bind_textdomain_codeset(__s.c_str(), __nl_langinfo_l(CODESET, __codecvt._M_c_locale_codecvt)); return get_catalogs()._M_add(__s.c_str(), __l); } template<> void messages::do_close(catalog __c) const { get_catalogs()._M_erase(__c); } template<> string messages::do_get(catalog __c, int, int, const string& __dfault) const { if (__c < 0 || __dfault.empty()) return __dfault; const Catalog_info* __cat_info = get_catalogs()._M_get(__c); if (!__cat_info) return __dfault; return get_glibc_msg(_M_c_locale_messages, _M_name_messages, __cat_info->_M_domain, __dfault.c_str()); } #ifdef _GLIBCXX_USE_WCHAR_T template<> typename messages::catalog messages::do_open(const basic_string& __s, const locale& __l) const { typedef codecvt __codecvt_t; const __codecvt_t& __codecvt = use_facet<__codecvt_t>(__l); bind_textdomain_codeset(__s.c_str(), __nl_langinfo_l(CODESET, __codecvt._M_c_locale_codecvt)); return get_catalogs()._M_add(__s.c_str(), __l); } template<> void messages::do_close(catalog __c) const { get_catalogs()._M_erase(__c); } template<> wstring messages::do_get(catalog __c, int, int, const wstring& __wdfault) const { if (__c < 0 || __wdfault.empty()) return __wdfault; const Catalog_info* __cat_info = get_catalogs()._M_get(__c); if (!__cat_info) return __wdfault; typedef codecvt __codecvt_t; const __codecvt_t& __conv = use_facet<__codecvt_t>(__cat_info->_M_locale); const char* __translation; mbstate_t __state; __builtin_memset(&__state, 0, sizeof(mbstate_t)); { const wchar_t* __wdfault_next; size_t __mb_size = __wdfault.size() * __conv.max_length(); char* __dfault = static_cast(__builtin_alloca(sizeof(char) * (__mb_size + 1))); char* __dfault_next; __conv.out(__state, __wdfault.data(), __wdfault.data() + __wdfault.size(), __wdfault_next, __dfault, __dfault + __mb_size, __dfault_next); // Make sure string passed to dgettext is \0 terminated. *__dfault_next = '\0'; __translation = get_glibc_msg(_M_c_locale_messages, _M_name_messages, __cat_info->_M_domain, __dfault); // If we end up getting default value back we can simply return original // default value. if (__translation == __dfault) return __wdfault; } __builtin_memset(&__state, 0, sizeof(mbstate_t)); size_t __size = __builtin_strlen(__translation); const char* __translation_next; wchar_t* __wtranslation = static_cast(__builtin_alloca(sizeof(wchar_t) * (__size + 1))); wchar_t* __wtranslation_next; __conv.in(__state, __translation, __translation + __size, __translation_next, __wtranslation, __wtranslation + __size, __wtranslation_next); return wstring(__wtranslation, __wtranslation_next); } #endif _GLIBCXX_END_NAMESPACE_VERSION } // namespace