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/* string-extras.h */
This file is part of the AVR-Crypto-Lib.
Copyright (C) 2006-2015 Daniel Otte (
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
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 <>.
* \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);