64 lines
1.4 KiB
C
64 lines
1.4 KiB
C
/* string_extras.c */
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/*
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This file is part of the AVR-Crypto-Lib.
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Copyright (C) 2008 Daniel Otte (daniel.otte@rub.de)
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* \file string_extras.c
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* \author Daniel Otte
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* \date 2006-05-16
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* \license GPLv3 or later
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*
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*/
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#include <avr/pgmspace.h>
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#include <ctype.h>
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uint16_t stridentcnt_P(char* a, PGM_P b){
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uint16_t i=0;
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char c;
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for(;;){
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c = pgm_read_byte(b++);
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if(*a != c || c=='\0')
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return i;
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i++;
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a++;
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}
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}
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uint16_t firstword_length(char* s){
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uint16_t ret=0;
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while(isgraph(*s++))
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ret++;
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return ret;
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}
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char* strstrip(char* str){
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if(!str)
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return str;
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char* endptr;
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while(*str && (*str==' ' || *str=='\t'))
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++str;
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endptr=str;
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while(*endptr)
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++endptr;
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do{
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--endptr;
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}while(*endptr==' ' || *endptr=='\t');
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endptr[1]='\0';
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return str;
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}
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