/contrib/groff/src/libs/libgroff/strerror.c

 1/* Copyright (C) 1989, 1990, 1991, 1992, 2001, 2003
 2   Free Software Foundation, Inc.
 3     Written by James Clark (jjc@jclark.com)
 4
 5This file is part of groff.
 6
 7groff is free software; you can redistribute it and/or modify it under
 8the terms of the GNU General Public License as published by the Free
 9Software Foundation; either version 2, or (at your option) any later
10version.
11
12groff is distributed in the hope that it will be useful, but WITHOUT ANY
13WARRANTY; without even the implied warranty of MERCHANTABILITY or
14FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
15for more details.
16
17You should have received a copy of the GNU General Public License along
18with groff; see the file COPYING.  If not, write to the Free Software
19Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */
20
21#ifdef HAVE_CONFIG_H
22#include <config.h>
23#endif
24
25#include <stdio.h>
26#include <errno.h>
27#include <stdlib.h>		/* for MinGW */
28
29#define INT_DIGITS 19		/* enough for 64 bit integer */
30
31#ifndef HAVE_SYS_NERR
32extern int sys_nerr;
33#endif
34#ifndef HAVE_SYS_ERRLIST
35extern char *sys_errlist[];
36#endif
37
38char *strerror(n)
39     int n;
40{
41  static char buf[sizeof("Error ") + 1 + INT_DIGITS];
42  if (n >= 0 && n < sys_nerr && sys_errlist[n] != 0)
43    return sys_errlist[n];
44  else {
45    sprintf(buf, "Error %d", n);
46    return buf;
47  }
48}