/* *****************************************************************************
 * core/version.c -- display the version message when run directly.
 * Copyright (C) 2017 Thomas "Cakeisalie5" Touhey <thomas@touhey.fr>
 *
 * This file is part of libg1m.
 * libg1m 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 3.0 of the License,
 * or (at your option) any later version.
 *
 * libg1m 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 libg1m; if not, see <http://www.gnu.org/licenses/>.
 * ************************************************************************** */
#include <libg1m/internals.h>
#include <unistd.h>

/* get loglevel string */
#if LOGLEVEL == ll_info
# define LLS "info"
#elif LOGLEVEL == ll_warn
# define LLS "warn"
#elif LOGLEVEL == ll_error
# define LLS "error"
#elif LOGLEVEL == ll_fatal
# define LLS "fatal"
#elif LOGLEVEL == ll_none
# define LLS "none"
#else
# define LLS "unknown"
#endif

/**
 *	version_message:
 *	The message that should be displayed when the library is executed.
 */

static const char version_message[] =
"libg1m v" LIBG1M_VERSION " (licensed under LGPL3)\n"
"Maintained by " LIBG1M_MAINTAINER ".\n"
"\n"
"Compiled with the '" LLS "' loglevel.\n"
"\n"
"This is free software; see the source for copying conditions.\n"
"There is NO warranty; not even for MERCHANTABILITY or\n"
"FITNESS FOR A PARTICULAR PURPOSE.";

/**
 *	__libg1m_version:
 *	Display version when the library is executed.
 */

extern void g1m__version(void)
	__attribute__((noreturn));
void g1m__version(void)
{
	puts(version_message);
	_exit(0);
}