/*
 * isvalidemailaddr.h
 * isvalidemailaddr
 *
 * Copyright (c) 2004-2005 Denis Defreyne
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 * - Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 * 
 * - 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.
 * 
 * - The names of isvalidemailaddr's contributors may not be used to endorse or
 *   promote products derived from this software without specific prior
 *   written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 THE COPYRIGHT OWNER OR CONTRIBUTORS 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.
 * 
 * VERSION HISTORY:
 * 1.0   [2005-01-25]
 *     - initial release
 * 1.1   [2005-04-23]
 *     - isvalidemailaddr() is now known as isvalidemail()
 *     - two adjacent dots before the `@` sign is no longer considered invalid
 *     - miscellaneous tweaks
 */

#include <stdint.h>
#include <string.h>

/*!
 * @header
 * @abstract Provides two useful string replacement functions.
 * @copyright Copyright (c) 2004-2005 Denis Defreyne. All rights reserved. 
 */

/*!
 * @function isvalidemail
 * @abstract This function checks whether a given email address is valid or not.
 * @param email The email address which is to be checked for validity.
 * @param len The length of the email address which is to be checked for validity.
 * @result 0 if email address is valid, -1 otherwise. 
 */
inline int isvalidemail(char *email, uint8_t len)