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/* error.c -- error handler for noninteractive utilities
Copyright (C) 1990-1992 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. */
/* David MacKenzie */
/* Brian Berliner added support for CVS */
#include "cvs.h"
#ifndef lint
static const char rcsid[] = "$CVSid: @(#)error.c 1.13 94/09/30 $";
USE(rcsid);
#endif /* not lint */
#include <stdio.h>
/* If non-zero, error will use the CVS protocol to stdout to report error
messages. This will only be set in the CVS server parent process;
most other code is run via do_cvs_command, which forks off a child
process and packages up its stderr in the protocol. */
int error_use_protocol;
#ifdef HAVE_VPRINTF
#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
#ifdef HAVE_DOPRNT
#define va_alist args
#define va_dcl int args;
#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
#endif
#if STDC_HEADERS
#include <stdlib.h>
#include <string.h>
#else
#if __STDC__
void exit(int status);
#else
void exit ();
#endif /* __STDC__ */
#endif
extern char *strerror ();
typedef void (*fn_returning_void) ();
/* Function to call before exiting. */
static fn_returning_void cleanup_fn;
fn_returning_void
error_set_cleanup (arg)
fn_returning_void arg;
{
fn_returning_void retval = cleanup_fn;
cleanup_fn = arg;
return retval;
}
/* 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 (HAVE_VPRINTF) && __STDC__
error (int status, int errnum, const char *message, ...)
#else
error (status, errnum, message, va_alist)
int status;
int errnum;
const char *message;
va_dcl
#endif
{
FILE *out = stderr;
extern char *program_name;
extern char *command_name;
#ifdef HAVE_VPRINTF
va_list args;
#endif
if (error_use_protocol)
{
out = stdout;
printf ("E ");
}
if (command_name && *command_name)
if (status)
fprintf (out, "%s [%s aborted]: ", program_name, command_name);
else
fprintf (out, "%s %s: ", program_name, command_name);
else
fprintf (out, "%s: ", program_name);
#ifdef HAVE_VPRINTF
VA_START (args, message);
vfprintf (out, message, args);
va_end (args);
#else
#ifdef HAVE_DOPRNT
_doprnt (message, &args, out);
#else
fprintf (out, message, a1, a2, a3, a4, a5, a6, a7, a8);
#endif
#endif
if (errnum)
fprintf (out, ": %s", strerror (errnum));
putc ('\n', out);
fflush (out);
if (status)
{
if (cleanup_fn)
(*cleanup_fn) ();
exit (status);
}
}
/* Print the program name and error message MESSAGE, which is a printf-style
format string with optional args to the file specified by FP.
If ERRNUM is nonzero, print its corresponding system error message.
Exit with status STATUS if it is nonzero. */
/* VARARGS */
void
#if defined (HAVE_VPRINTF) && __STDC__
fperror (FILE *fp, int status, int errnum, char *message, ...)
#else
fperror (fp, status, errnum, message, va_alist)
FILE *fp;
int status;
int errnum;
char *message;
va_dcl
#endif
{
extern char *program_name;
#ifdef HAVE_VPRINTF
va_list args;
#endif
fprintf (fp, "%s: ", program_name);
#ifdef HAVE_VPRINTF
VA_START (args, message);
vfprintf (fp, message, args);
va_end (args);
#else
#ifdef HAVE_DOPRNT
_doprnt (message, &args, fp);
#else
fprintf (fp, message, a1, a2, a3, a4, a5, a6, a7, a8);
#endif
#endif
if (errnum)
fprintf (fp, ": %s", strerror (errnum));
putc ('\n', fp);
fflush (fp);
if (status)
{
if (cleanup_fn)
(*cleanup_fn) ();
exit (status);
}
}
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