kolibrios/programs/develop/libraries/newlib/tests/error.c
Sergey Semyonov (Serge) 0a3f4b2193 Newlib source code
git-svn-id: svn://kolibrios.org@1693 a494cfbc-eb01-0410-851d-a64ba20cac60
2010-11-07 13:42:29 +00:00

118 lines
3.1 KiB
C

/* Error handler for noninteractive utilities
Copyright (C) 1990-1998, 2000-2005, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; 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>. */
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "error.h"
/* This variable is incremented each time `error' is called. */
unsigned int error_message_count;
char *strerror_r ();
/* The calling program should define program_name and set it to the
name of the executing program. */
//extern char *program_name;
static void
print_errno_message (int errnum)
{
char const *s;
s = strerror (errnum);
fprintf (stderr, ": %s", s);
}
static void
error_tail (int status, int errnum, const char *message, va_list args)
{
vfprintf (stderr, message, args);
va_end (args);
++error_message_count;
if (errnum)
print_errno_message (errnum);
putc ('\n', stderr);
fflush (stderr);
if (status)
exit (status);
}
/* 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. */
void
error (int status, int errnum, const char *message, ...)
{
va_list args;
// fflush (stdout);
// fprintf (stderr, "%s: ", program_name);
va_start (args, message);
error_tail (status, errnum, message, args);
};
/* 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;
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) == 0))
/* Simply return and print nothing. */
return;
old_file_name = file_name;
old_line_number = line_number;
}
// fflush (stdout);
fprintf (stderr, file_name != NULL ? "%s:%d: " : " ",
file_name, line_number);
va_start (args, message);
error_tail (status, errnum, message, args);
}