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/*
* Copyright (C) 2023 Linux Studio Plugins Project <https://lsp-plug.in/>
* (C) 2023 Vladimir Sadovnikov <sadko4u@gmail.com>
*
* This file is part of lsp-common-lib
* Created on: 19 нояб. 2023 г.
*
* lsp-common-lib is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* lsp-common-lib 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with lsp-common-lib. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef LSP_PLUG_IN_STDLIB_LOCALE_H_
#define LSP_PLUG_IN_STDLIB_LOCALE_H_
#include <lsp-plug.in/common/version.h>
#include <lsp-plug.in/common/finally.h>
#include <lsp-plug.in/common/types.h>
#include <locale.h>
#include <string.h>
#ifdef PLATFORM_MACOSX
#include <xlocale.h>
#endif /* PLATFORM_MACOSX */
#define SET_LOCALE_MANGLE2(prefix, postfix) prefix ## _ ## postfix
#define SET_LOCALE_MANGLE1(prefix, postfix) SET_LOCALE_MANGLE2(prefix, postfix)
#define SET_LOCALE_MANGLE(var) SET_LOCALE_MANGLE1(var, __COUNTER__)
#ifdef PLATFORM_WINDOWS
#define SET_LOCALE_SCOPED_VAR(state, old, old_len, buf, lc, value) \
int state = _configthreadlocale(_ENABLE_PER_THREAD_LOCALE); \
char *old = setlocale(lc, NULL); \
if (old != NULL) \
{ \
size_t old_len = strlen(old) + 1; \
char *buf = static_cast<char *>(alloca(old_len)); \
memcpy(buf, old, old_len); \
old = buf; \
} \
setlocale(lc, value); \
lsp_finally { \
if (old != NULL) \
::setlocale(lc, old); \
if (state >= 0) \
_configthreadlocale(state); \
}
#define SET_LOCALE_SCOPED(lc, value) SET_LOCALE_SCOPED_VAR( \
SET_LOCALE_MANGLE(__state), \
SET_LOCALE_MANGLE(__old), \
SET_LOCALE_MANGLE(__len), \
SET_LOCALE_MANGLE(__buf), \
lc, \
value)
#else
#define SET_LOCALE_SCOPED_VAR(old, new, lc, value) \
locale_t old = ::lsp::detail::INVALID_LOCALE; \
locale_t new = ::lsp::detail::create_locale(lc, value); \
if (new != ::lsp::detail::INVALID_LOCALE) \
old = uselocale(new); \
lsp_finally { \
if (old != ::lsp::detail::INVALID_LOCALE) \
uselocale(old); \
if (new != ::lsp::detail::INVALID_LOCALE) \
freelocale(new); \
}
#define SET_LOCALE_SCOPED(lc, value) SET_LOCALE_SCOPED_VAR( \
SET_LOCALE_MANGLE(__old), \
SET_LOCALE_MANGLE(__new), \
lc, \
value)
namespace lsp
{
namespace detail
{
constexpr locale_t INVALID_LOCALE = (locale_t)0;
/**
* Create locale object based on locale type and name
* @param type locale type
* @param name locale name
* @return created locale object
*/
LSP_COMMON_LIB_PUBLIC
locale_t create_locale(int type, const char *name);
} /* namespace detail */
} /* namespace lsp */
#endif /* PLATFORM_WINDOWS */
#endif /* LSP_PLUG_IN_STDLIB_LOCALE_H_ */
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