// std::messages implementation details, GNU version -*- C++ -*-
// Copyright (C) 2001-2020 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