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string-extras.c

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+/* string_extras.c */
+/*
+    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.c
+ * \author  Daniel Otte 
+ * \date    2006-05-16
+ * \license	GPLv3 or later
+ * 
+ */
+
+#include <avr/pgmspace.h>
+#include <ctype.h>
+
+uint16_t stridentcnt_P(char* a, PGM_P b){
+	uint16_t i=0;
+	char c;
+	for(;;){
+		c = pgm_read_byte(b++);
+		if(*a != c || c=='\0')
+			return i;
+		i++;
+		a++;
+	}
+}
+
+uint16_t firstword_length(char* s){
+	uint16_t ret=0;
+	while(isgraph(*s++))
+		ret++;
+	return ret; 
+}
+
+char* strstrip(char* str){
+	if(!str)
+		return str;
+	char* endptr;
+	while(*str && (*str==' ' || *str=='\t'))
+		++str;
+	endptr=str;
+	while(*endptr)
+		++endptr;
+	do{
+		--endptr;
+	}while(*endptr==' ' || *endptr=='\t');
+	endptr[1]='\0';
+	return str;
+}

string-extras.h

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+/* 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
+ * 
+ */
+
+uint16_t stridentcnt_P(char* a, PGM_P b);
+uint16_t firstword_length(char* s);
+char* strstrip(char*);