/* Error handler for noninteractive utilities   Copyright (C) 1990-1998, 2000, 2001 Free Software Foundation, Inc.   This file is part of the GNU C Library.  Its master source is NOT part of   the C library, however.  The master source lives in /gd/gnu/lib.   The GNU C Library is free software; you can redistribute it and/or   modify it under the terms of the GNU Library General Public License as   published by the Free Software Foundation; either version 2 of the   License, or (at your option) any later version.   The GNU C Library 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   Library General Public License for more details.   You should have received a copy of the GNU Library General Public   License along with the GNU C Library; see the file COPYING.LIB.  If not,   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,   Boston, MA 02111-1307, USA.  *//* Written by David MacKenzie <djm@gnu.ai.mit.edu>.  *//* Adjusted slightly by Erik Andersen <andersen@uclibc.org> */#include <stdio.h>#include <stdarg.h>#include <stdlib.h>#include <string.h>#include "error.h"/* This variable is incremented each time `error' is called.  */unsigned int error_message_count;/* Sometimes we want to have at most one error per line.  This   variable controls whether this mode is selected or not.  */int error_one_per_line;/* 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) (void) = NULL;void __error (int status, int errnum, const char *message, ...){    va_list args;    fflush (stdout);    va_start (args, message);    vfprintf (stderr, message, args);    va_end (args);    ++error_message_count;    if (errnum) {	fprintf (stderr, ": %s", strerror (errnum));    }    putc ('\n', stderr);    if (status)	exit (status);}void __error_at_line (int status, int errnum, const char *file_name,	       unsigned int line_number, const char *message, ...){    va_list args;    if (error_one_per_line) {	static const char *old_file_name;	static unsigned int old_line_number;	if (old_line_number == line_number &&		(file_name == old_file_name || !strcmp (old_file_name, file_name)))	    /* Simply return and print nothing.  */	    return;	old_file_name = file_name;	old_line_number = line_number;    }    fflush (stdout);    if (file_name != NULL)	fprintf (stderr, "%s:%d: ", file_name, line_number);    va_start (args, message);    vfprintf (stderr, message, args);    va_end (args);    ++error_message_count;    if (errnum) {	fprintf (stderr, ": %s", strerror (errnum));    }    putc ('\n', stderr);    if (status)	exit (status);}/* Use the weaks here in an effort at controlling namespace pollution */#undef error#undef error_at_lineweak_alias (__error, error)weak_alias (__error_at_line, error_at_line)