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/* 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_line

weak_alias (__error, error)

weak_alias (__error_at_line, error_at_line)

#include "err.h"

#include "errno.h"

/* NORETURN */

void verr (int status, const char *message, va_list args)

{

    fflush (stdout);

    vfprintf (stderr, message, args);

    if (errno) {

        fprintf (stderr, ": %s", strerror (errno));

    }

    putc ('\n', stderr);

    if (status)

        exit (status);

}

/* NORETURN */

void verrx (int status, const char *message, va_list args)

{

    fflush (stdout);

    vfprintf (stderr, message, args);

    if (status)

        exit (status);

}

void vwarn (const char *message, va_list args)

{

    verr (0, message, args);

}

void vwarnx (const char *message, va_list args)

{

    verrx (0, message, args);

}

void err (int status, const char *message, ...)

{

    va_list args;

    va_start (args, message);

    verr (status, message, args);

    va_end (args);

}

void errx (int status, const char *message, ...)

{

    va_list args;

    va_start (args, message);

    verrx (status, message, args);

    va_end (args);

}

void warn (const char *message, ...)

{

    va_list args;

    va_start (args, message);

    verr (0, message, args);

    va_end (args);

}

void warnx (const char *message, ...)

{

    va_list args;

    va_start (args, message);

    verrx (0, message, args);

    va_end (args);

}