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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___LOCALE_DIR_MESSAGES_H
#define _LIBCPP___LOCALE_DIR_MESSAGES_H
#include <__config>
#include <__iterator/back_insert_iterator.h>
#include <__locale>
#include <string>
#if _LIBCPP_HAS_LOCALIZATION
# if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
# endif
# if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
// Most unix variants have catopen. These are the specific ones that don't.
# if !defined(__BIONIC__) && !defined(_NEWLIB_VERSION) && !defined(__EMSCRIPTEN__)
# define _LIBCPP_HAS_CATOPEN 1
# include <nl_types.h>
# else
# define _LIBCPP_HAS_CATOPEN 0
# endif
# else
# define _LIBCPP_HAS_CATOPEN 0
# endif
_LIBCPP_BEGIN_NAMESPACE_STD
class _LIBCPP_EXPORTED_FROM_ABI messages_base {
public:
typedef intptr_t catalog;
_LIBCPP_HIDE_FROM_ABI messages_base() {}
};
template <class _CharT>
class messages : public locale::facet, public messages_base {
public:
typedef _CharT char_type;
typedef basic_string<_CharT> string_type;
_LIBCPP_HIDE_FROM_ABI explicit messages(size_t __refs = 0) : locale::facet(__refs) {}
_LIBCPP_HIDE_FROM_ABI catalog open(const basic_string<char>& __nm, const locale& __loc) const {
return do_open(__nm, __loc);
}
_LIBCPP_HIDE_FROM_ABI string_type get(catalog __c, int __set, int __msgid, const string_type& __dflt) const {
return do_get(__c, __set, __msgid, __dflt);
}
_LIBCPP_HIDE_FROM_ABI void close(catalog __c) const { do_close(__c); }
static locale::id id;
protected:
_LIBCPP_HIDE_FROM_ABI_VIRTUAL ~messages() override {}
virtual catalog do_open(const basic_string<char>&, const locale&) const;
virtual string_type do_get(catalog, int __set, int __msgid, const string_type& __dflt) const;
virtual void do_close(catalog) const;
};
template <class _CharT>
locale::id messages<_CharT>::id;
template <class _CharT>
typename messages<_CharT>::catalog messages<_CharT>::do_open(const basic_string<char>& __nm, const locale&) const {
# if _LIBCPP_HAS_CATOPEN
return (catalog)catopen(__nm.c_str(), NL_CAT_LOCALE);
# else // !_LIBCPP_HAS_CATOPEN
(void)__nm;
return -1;
# endif // _LIBCPP_HAS_CATOPEN
}
template <class _CharT>
typename messages<_CharT>::string_type
messages<_CharT>::do_get(catalog __c, int __set, int __msgid, const string_type& __dflt) const {
# if _LIBCPP_HAS_CATOPEN
string __ndflt;
__narrow_to_utf8<sizeof(char_type) * __CHAR_BIT__>()(
std::back_inserter(__ndflt), __dflt.c_str(), __dflt.c_str() + __dflt.size());
nl_catd __cat = (nl_catd)__c;
static_assert(sizeof(catalog) >= sizeof(nl_catd), "Unexpected nl_catd type");
char* __n = catgets(__cat, __set, __msgid, __ndflt.c_str());
string_type __w;
__widen_from_utf8<sizeof(char_type) * __CHAR_BIT__>()(std::back_inserter(__w), __n, __n + std::strlen(__n));
return __w;
# else // !_LIBCPP_HAS_CATOPEN
(void)__c;
(void)__set;
(void)__msgid;
return __dflt;
# endif // _LIBCPP_HAS_CATOPEN
}
template <class _CharT>
void messages<_CharT>::do_close(catalog __c) const {
# if _LIBCPP_HAS_CATOPEN
catclose((nl_catd)__c);
# else // !_LIBCPP_HAS_CATOPEN
(void)__c;
# endif // _LIBCPP_HAS_CATOPEN
}
extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS messages<char>;
# if _LIBCPP_HAS_WIDE_CHARACTERS
extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS messages<wchar_t>;
# endif
template <class _CharT>
class messages_byname : public messages<_CharT> {
public:
typedef messages_base::catalog catalog;
typedef basic_string<_CharT> string_type;
_LIBCPP_HIDE_FROM_ABI explicit messages_byname(const char*, size_t __refs = 0) : messages<_CharT>(__refs) {}
_LIBCPP_HIDE_FROM_ABI explicit messages_byname(const string&, size_t __refs = 0) : messages<_CharT>(__refs) {}
protected:
_LIBCPP_HIDE_FROM_ABI_VIRTUAL ~messages_byname() override {}
};
extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS messages_byname<char>;
# if _LIBCPP_HAS_WIDE_CHARACTERS
extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS messages_byname<wchar_t>;
# endif
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP_HAS_LOCALIZATION
#endif // _LIBCPP___LOCALE_DIR_MESSAGES_H
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