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report_err.c

/* report_err.c
* Routines for code that can run in GUI and command-line environments to
* use to report errors to the user (e.g., I/O errors, or problems with
* preference settings).
*
* The application using libwireshark will register error-reporting
* routines, and the routines defined here will call the registered
* routines.  That way, these routines can be called by code that
* doesn't itself know whether to pop up a dialog or print something
* to the standard error.
*
* $Id: report_err.c 27456 2009-02-15 21:47:57Z guy $
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* 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
* of the License, 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <glib.h>
#include <stdarg.h>
#include "report_err.h"

static void (*report_failure_func)(const char *, va_list);
static void (*report_open_failure_func)(const char *, int, gboolean);
static void (*report_read_failure_func)(const char *, int);
static void (*report_write_failure_func)(const char *, int);

void init_report_err(void (*report_failure)(const char *, va_list),
                               void (*report_open_failure)(const char *, int, gboolean),
                               void (*report_read_failure)(const char *, int),
                               void (*report_write_failure)(const char *, int))
{
      report_failure_func = report_failure;
      report_open_failure_func = report_open_failure;
      report_read_failure_func = report_read_failure;
      report_write_failure_func = report_write_failure;
}

/*
 * Report a general error.
 */
void
report_failure(const char *msg_format, ...)
{
      va_list ap;
      
      va_start(ap, msg_format);
      (*report_failure_func)(msg_format, ap);
      va_end(ap);
}

/*
 * Report an error when trying to open or create a file.
 * "err" is assumed to be an error code from Wiretap; positive values are
 * UNIX-style errnos, so this can be used for open failures not from
 * Wiretap as long as the failure code is just an errno.
 */
void
report_open_failure(const char *filename, int err,
                              gboolean for_writing)
{
      (*report_open_failure_func)(filename, err, for_writing);
}

/*
 * Report an error when trying to read a file.
 * "err" is assumed to be a UNIX-style errno.
 */
void
report_read_failure(const char *filename, int err)
{
      (*report_read_failure_func)(filename, err);
}

/*
 * Report an error when trying to write a file.
 * "err" is assumed to be a UNIX-style errno.
 */
void
report_write_failure(const char *filename, int err)
{
      (*report_write_failure_func)(filename, err);
}

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