/*
 * libcompat - system compatibility library
 *
 * Copyright © 1995 Ian Jackson <ijackson@chiark.greenend.org.uk>
 *
 * This 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 2 of the License, or
 * (at your option) any later version.
 *
 * This 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

#include <config.h>

#include <signal.h>
#include <string.h>
#include <stdio.h>
#include <gettext.h>

#include "compat.h"

#define _(str) gettext(str)

#if !HAVE_DECL_SYS_SIGLIST
const char *const sys_siglist[] = {
	NULL,		/* 0 */
	"SIGHUP",	/* 1 */
	"SIGINT",	/* 2 */
	"SIGQUIT",	/* 3 */
	"SIGILL",	/* 4 */
	"SIGTRAP",	/* 5 */
	"SIGABRT",	/* 6 */
	"SIGEMT",	/* 7 */
	"SIGFPE",	/* 8 */
	"SIGKILL",	/* 9 */
	"SIGUSR1",	/* 10 */
	"SIGSEGV",	/* 11 */
	"SIGUSR2",	/* 12 */
	"SIGPIPE",	/* 13 */
	"SIGALRM",	/* 14 */
	"SIGTERM",	/* 15 */
	"SIGSTKFLT",	/* 16 */
	"SIGCHLD",	/* 17 */
	"SIGCONT",	/* 18 */
	"SIGSTOP",	/* 19 */
	"SIGTSTP",	/* 20 */
	"SIGTTIN",	/* 21 */
	"SIGTTOU",	/* 22 */
};
# define COMPAT_NSIGLIST (int)(sizeof(sys_siglist) / sizeof(sys_siglist[0]))
#else
# ifndef NSIG
#  define NSIG 32
# endif
# define COMPAT_NSIGLIST NSIG
#endif

const char *
strsignal(int s)
{
	static char buf[100];

	if (s > 0 && s < COMPAT_NSIGLIST)
		return sys_siglist[s];

	sprintf(buf, _("Unknown signal %d"), s);

	return buf;
}