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/*
* $Id$
*
* MiniMIME - a library for handling MIME messages
*
* Copyright (C) 2003 Jann Fischer <rezine@mistrust.net>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the author nor the names of the contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY JANN FISCHER AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL JANN FISCHER OR THE VOICES IN HIS HEAD
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <assert.h>
#include <errno.h>
#include "mm_internal.h"
#include "mm_util.h"
/** @file mm_error.c
*
* This module contains functions for MiniMIME error information/manipulation
*/
/** @defgroup error MiniMIME error functions */
/**
* Initializes the global error object
*
* @ingroup error
*
* This function initializes the global error object mm_error. This must be
* done when the library is initialized, and is automatically called from
* mm_init_library().
*/
void
mm_error_init(void)
{
mm_error.error_id = 0;
mm_error.error_where = 0;
mm_error.lineno = 0;
memset(&mm_error.error_msg, '\0', sizeof(mm_error.error_msg));
}
/**
* Sets a descriptive error message
*
* @param fmt The error message as format string
* @ingroup error
*
* This function is called from the various MiniMIME modules in case an
* error occured. Should never be called by the user.
*/
void
mm_error_setmsg(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
vsnprintf(mm_error.error_msg, sizeof(mm_error.error_msg), fmt, ap);
va_end(ap);
}
void
mm_error_setlineno(int lineno)
{
mm_error.lineno = lineno;
}
/**
* Retrieves the current error message
*
* @return The currently set error message
* @ingroup error
*
* This function can be used to retrieve a descriptive error message for the
* current error, much like strerror() function of libc. When this function
* is called without an error being set, it returns the string "No error".
* The string returned does not need to be freed, since it is not dynamically
* allocated by the library.
*/
char *
mm_error_string(void)
{
if (mm_errno != MM_ERROR_ERRNO && mm_error.error_msg[0] == '\0') {
return "No error";
} else if (mm_errno == MM_ERROR_ERRNO) {
return strerror(errno);
} else {
return mm_error.error_msg;
}
}
int
mm_error_lineno(void)
{
return mm_error.lineno;
}
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