mirror of
https://github.com/autc04/Retro68.git
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185 lines
5.4 KiB
C++
185 lines
5.4 KiB
C++
// std::messages implementation details, GNU version -*- C++ -*-
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// Copyright (C) 2001-2016 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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//
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// ISO C++ 14882: 22.2.7.1.2 messages virtual functions
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//
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// Written by Benjamin Kosnik <bkoz@redhat.com>
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#include <locale>
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#include <bits/c++locale_internal.h>
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#include <cstdlib> // std::free
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#include <string.h> // ::strdup
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namespace
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{
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using namespace std;
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const char*
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get_glibc_msg(__c_locale __locale_messages __attribute__((unused)),
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const char* __name_messages __attribute__((unused)),
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const char* __domainname,
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const char* __dfault)
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{
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#if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
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std::__c_locale __old = __uselocale(__locale_messages);
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const char* __msg = dgettext(__domainname, __dfault);
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__uselocale(__old);
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return __msg;
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#else
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if (char* __sav = strdup(setlocale(LC_ALL, 0)))
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{
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setlocale(LC_ALL, __name_messages);
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const char* __msg = dgettext(__domainname, __dfault);
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setlocale(LC_ALL, __sav);
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free(__sav);
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return __msg;
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}
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return __dfault;
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#endif
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}
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}
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namespace std _GLIBCXX_VISIBILITY(default)
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{
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_GLIBCXX_BEGIN_NAMESPACE_VERSION
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// Specializations.
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template<>
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typename messages<char>::catalog
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messages<char>::do_open(const basic_string<char>& __s,
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const locale& __l) const
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{
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typedef codecvt<char, char, mbstate_t> __codecvt_t;
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const __codecvt_t& __codecvt = use_facet<__codecvt_t>(__l);
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bind_textdomain_codeset(__s.c_str(),
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__nl_langinfo_l(CODESET, __codecvt._M_c_locale_codecvt));
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return get_catalogs()._M_add(__s.c_str(), __l);
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}
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template<>
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void
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messages<char>::do_close(catalog __c) const
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{ get_catalogs()._M_erase(__c); }
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template<>
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string
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messages<char>::do_get(catalog __c, int, int,
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const string& __dfault) const
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{
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if (__c < 0 || __dfault.empty())
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return __dfault;
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const Catalog_info* __cat_info = get_catalogs()._M_get(__c);
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if (!__cat_info)
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return __dfault;
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return get_glibc_msg(_M_c_locale_messages, _M_name_messages,
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__cat_info->_M_domain,
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__dfault.c_str());
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}
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#ifdef _GLIBCXX_USE_WCHAR_T
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template<>
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typename messages<wchar_t>::catalog
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messages<wchar_t>::do_open(const basic_string<char>& __s,
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const locale& __l) const
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{
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typedef codecvt<wchar_t, char, mbstate_t> __codecvt_t;
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const __codecvt_t& __codecvt = use_facet<__codecvt_t>(__l);
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bind_textdomain_codeset(__s.c_str(),
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__nl_langinfo_l(CODESET, __codecvt._M_c_locale_codecvt));
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return get_catalogs()._M_add(__s.c_str(), __l);
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}
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template<>
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void
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messages<wchar_t>::do_close(catalog __c) const
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{ get_catalogs()._M_erase(__c); }
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template<>
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wstring
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messages<wchar_t>::do_get(catalog __c, int, int,
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const wstring& __wdfault) const
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{
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if (__c < 0 || __wdfault.empty())
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return __wdfault;
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const Catalog_info* __cat_info = get_catalogs()._M_get(__c);
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if (!__cat_info)
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return __wdfault;
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typedef codecvt<wchar_t, char, mbstate_t> __codecvt_t;
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const __codecvt_t& __conv =
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use_facet<__codecvt_t>(__cat_info->_M_locale);
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const char* __translation;
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mbstate_t __state;
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__builtin_memset(&__state, 0, sizeof(mbstate_t));
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{
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const wchar_t* __wdfault_next;
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size_t __mb_size = __wdfault.size() * __conv.max_length();
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char* __dfault =
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static_cast<char*>(__builtin_alloca(sizeof(char) * (__mb_size + 1)));
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char* __dfault_next;
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__conv.out(__state,
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__wdfault.data(), __wdfault.data() + __wdfault.size(),
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__wdfault_next,
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__dfault, __dfault + __mb_size, __dfault_next);
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// Make sure string passed to dgettext is \0 terminated.
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*__dfault_next = '\0';
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__translation = get_glibc_msg(_M_c_locale_messages, _M_name_messages,
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__cat_info->_M_domain, __dfault);
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// If we end up getting default value back we can simply return original
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// default value.
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if (__translation == __dfault)
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return __wdfault;
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}
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__builtin_memset(&__state, 0, sizeof(mbstate_t));
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size_t __size = __builtin_strlen(__translation);
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const char* __translation_next;
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wchar_t* __wtranslation =
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static_cast<wchar_t*>(__builtin_alloca(sizeof(wchar_t) * (__size + 1)));
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wchar_t* __wtranslation_next;
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__conv.in(__state, __translation, __translation + __size,
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__translation_next,
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__wtranslation, __wtranslation + __size,
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__wtranslation_next);
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return wstring(__wtranslation, __wtranslation_next);
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}
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#endif
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_GLIBCXX_END_NAMESPACE_VERSION
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} // namespace
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