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