/* string-extras.h */

/*

This file is part of the AVR-Crypto-Lib.

Copyright (C) 2008 Daniel Otte (daniel.otte@rub.de)

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 3 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, see <http://www.gnu.org/licenses/>.

*/

/**

* \file string-extras.h

* \author Daniel Otte

* \date 2006-05-16

* \license GPLv3 or later

*

*/

/** \fn stridentcnt_P(char* a, PGM_P b)

* \brief counts the number of identic chars

*

* This function compares the supplyed strings and returns the index of the

* first char where the strings differ.

* \param a pointer to string in RAM

* \param b pointer to string in Flash

* \return index of the first char where \c a and \c b differ

*/

uint16_t stridentcnt_P(char* a, PGM_P b);

/** \fn firstword_length(char* s)

* \brief compute the length of the first word in supllyed string

*

* This function searches for the first whitespace in the string and returns the

* number of chars before the first whitespace.

* \param s string

* \return number of chars in first word

*/

uint16_t firstword_length(char* s);

/** \fn strstrip(char* str)

* \brief removes whitespace at the beginning and the end of a string

*

* This function removes whitespaces at the end of a string.

* \param str sting

* \return pointer to the first non-whitespace char in string

*/

char* strstrip(char* str);