gnu/dist/groff/src/libs/libgroff/strerror.c

   1 /*      $NetBSD$        */
   2
   3 /* Copyright (C) 1989, 1990, 1991, 1992, 2001, 2003
   4    Free Software Foundation, Inc.
   5      Written by James Clark (jjc@jclark.com)
   6
   7 This file is part of groff.
   8
   9 groff is free software; you can redistribute it and/or modify it under
  10 the terms of the GNU General Public License as published by the Free
  11 Software Foundation; either version 2, or (at your option) any later
  12 version.
  13
  14 groff is distributed in the hope that it will be useful, but WITHOUT ANY
  15 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  16 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  17 for more details.
  18
  19 You should have received a copy of the GNU General Public License along
  20 with groff; see the file COPYING.  If not, write to the Free Software
  21 Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include <stdio.h>
  28 #include <errno.h>
  29 #include <stdlib.h>             /* for MinGW */
  30
  31 #define INT_DIGITS 19           /* enough for 64 bit integer */
  32
  33 #ifndef HAVE_SYS_NERR
  34 extern int sys_nerr;
  35 #endif
  36 #ifndef HAVE_SYS_ERRLIST
  37 extern char *sys_errlist[];
  38 #endif
  39
  40 char *strerror(n)
  41      int n;
  42 {
  43   static char buf[sizeof("Error ") + 1 + INT_DIGITS];
  44   if (n >= 0 && n < sys_nerr && sys_errlist[n] != 0)
  45     return sys_errlist[n];
  46   else {
  47     sprintf(buf, "Error %d", n);
  48     return buf;
  49   }
  50 }