/UnxUtils/findutils-4.1/lib/error.c
C | 119 lines | 78 code | 14 blank | 27 comment | 9 complexity | e84c46ce89cb3693a1d19d8f700e6e33 MD5 | raw file
Possible License(s): BSD-3-Clause, LGPL-2.1, GPL-3.0, LGPL-3.0, GPL-2.0
- /* error.c -- error handler for noninteractive utilities
- Copyright (C) 1990, 91, 92, 93, 94 Free Software Foundation, Inc.
- This program 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, or (at your option)
- any later version.
- This program 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, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
- /* Written by David MacKenzie <djm@gnu.ai.mit.edu>. */
- #ifdef HAVE_CONFIG_H
- #include <config.h>
- #endif
- #include <stdio.h>
- #if HAVE_VPRINTF || HAVE_DOPRNT
- # if __STDC__
- # include <stdarg.h>
- # define VA_START(args, lastarg) va_start(args, lastarg)
- # else
- # include <varargs.h>
- # define VA_START(args, lastarg) va_start(args)
- # endif
- #else
- # define va_alist a1, a2, a3, a4, a5, a6, a7, a8
- # define va_dcl char *a1, *a2, *a3, *a4, *a5, *a6, *a7, *a8;
- #endif
- #if STDC_HEADERS
- # include <stdlib.h>
- # include <string.h>
- #else
- void exit ();
- #endif
- /* If NULL, error will flush stdout, then print on stderr the program
- name, a colon and a space. Otherwise, error will call this
- function without parameters instead. */
- void (*error_print_progname) () = NULL;
- /* The calling program should define program_name and set it to the
- name of the executing program. */
- extern char *program_name;
- #if HAVE_STRERROR
- char *strerror ();
- #else
- static char *
- private_strerror (errnum)
- int errnum;
- {
- extern char *sys_errlist[];
- extern int sys_nerr;
- if (errnum > 0 && errnum <= sys_nerr)
- return sys_errlist[errnum];
- return "Unknown system error";
- }
- #define strerror private_strerror
- #endif
- /* Print the program name and error message MESSAGE, which is a printf-style
- format string with optional args.
- If ERRNUM is nonzero, print its corresponding system error message.
- Exit with status STATUS if it is nonzero. */
- /* VARARGS */
- void
- #if defined(VA_START) && __STDC__
- error (int status, int errnum, const char *message, ...)
- #else
- error (status, errnum, message, va_alist)
- int status;
- int errnum;
- char *message;
- va_dcl
- #endif
- {
- #ifdef VA_START
- va_list args;
- #endif
- if (error_print_progname)
- (*error_print_progname) ();
- else
- {
- fflush (stdout);
- fprintf (stderr, "%s: ", program_name);
- }
- #ifdef VA_START
- VA_START (args, message);
- # if HAVE_VPRINTF
- vfprintf (stderr, message, args);
- # else
- _doprnt (message, args, stderr);
- # endif
- va_end (args);
- #else
- fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8);
- #endif
- if (errnum)
- fprintf (stderr, ": %s", strerror (errnum));
- putc ('\n', stderr);
- fflush (stderr);
- if (status)
- exit (status);
- }