gnu/dist/diffutils/lib/error.h

   1 /*      $NetBSD$        */
   2
   3 /* Declaration for error-reporting function
   4    Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
   5
   6
   7    NOTE: The canonical source of this file is maintained with the GNU C Library.
   8    Bugs can be reported to bug-glibc@prep.ai.mit.edu.
   9
  10    This program is free software; you can redistribute it and/or modify it
  11    under the terms of the GNU General Public License as published by the
  12    Free Software Foundation; either version 2, or (at your option) any
  13    later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  23    USA.  */
  24
  25 #ifndef _ERROR_H
  26 #define _ERROR_H 1
  27
  28 #ifndef __attribute__
  29 /* This feature is available in gcc versions 2.5 and later.  */
  30 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5)
  31 #  define __attribute__(Spec) /* empty */
  32 # endif
  33 /* The __-protected variants of `format' and `printf' attributes
  34    are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */
  35 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
  36 #  define __format__ format
  37 #  define __printf__ printf
  38 # endif
  39 #endif
  40
  41 #ifdef  __cplusplus
  42 extern "C" {
  43 #endif
  44
  45 #if defined (__STDC__) && __STDC__
  46
  47 /* Print a message with `fprintf (stderr, FORMAT, ...)';
  48    if ERRNUM is nonzero, follow it with ": " and strerror (ERRNUM).
  49    If STATUS is nonzero, terminate the program with `exit (STATUS)'.  */
  50
  51 extern void error (int status, int errnum, const char *format, ...)
  52      __attribute__ ((__format__ (__printf__, 3, 4)));
  53
  54 extern void error_at_line (int status, int errnum, const char *fname,
  55                            unsigned int lineno, const char *format, ...)
  56      __attribute__ ((__format__ (__printf__, 5, 6)));
  57
  58 /* If NULL, error will flush stdout, then print on stderr the program
  59    name, a colon and a space.  Otherwise, error will call this
  60    function without parameters instead.  */
  61 extern void (*error_print_progname) (void);
  62
  63 #else
  64 void error ();
  65 void error_at_line ();
  66 extern void (*error_print_progname) ();
  67 #endif
  68
  69 /* This variable is incremented each time `error' is called.  */
  70 extern unsigned int error_message_count;
  71
  72 /* Sometimes we want to have at most one error per line.  This
  73    variable controls whether this mode is selected or not.  */
  74 extern int error_one_per_line;
  75
  76 #ifdef  __cplusplus
  77 }
  78 #endif
  79
  80 #endif /* error.h */