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/* $Id: strchrnul.c,v 1.1.2.1 2008/03/20 21:42:39 joerg_wunsch Exp $ */
#ifndef __AVR__
# define _GNU_SOURCE /* to include strchrnul() */
# define PRINTFLN(line, fmt, ...) \
printf("\nLine %d: " fmt "\n", line, ##__VA_ARGS__)
# define EXIT(code) exit ((code) < 255 ? (code) : 255)
# define memcmp_P memcmp
#else
# if defined(__AVR_ATmega128__)
/* ATmega128 has enough RAM for sprintf(), print to 0x2000 in XRAM. */
# define PRINTFLN(line, fmt, ...) \
sprintf ((char *)0x2000, "\nLine %d: " fmt "\n", line, ##__VA_ARGS__)
# else
/* small AVR */
# define PRINTFLN(args...)
# endif
# define EXIT exit
#endif
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include "progmem.h"
void Check (int line, const char *s, int c, int expect)
{
char t[300], *p;
if (strlen_P(s) > sizeof(t) - 1)
exit (1);
strcpy_P (t, s);
p = strchrnul (t, c);
if (p != t + expect) {
PRINTFLN (line, "expect: %d, result: %d", expect, p - t);
EXIT (line);
}
if (strcmp_P (t, s)) {
PRINTFLN (line, "string was changed");
EXIT (1000 + line);
}
}
#define CHECK(s, c, expect) do { \
Check (__LINE__, PSTR(s), c, expect); \
} while (0)
int main ()
{
/* Not found */
CHECK ("", 1, 0);
CHECK ("", 255, 0);
CHECK ("ABCDEF", 'a', 6);
/* Found */
CHECK ("\001", 1, 0);
CHECK ("\377", 255, 0);
CHECK ("987654321", '7', 2);
/* '\0' is a part of string */
CHECK ("12345", 0, 5);
CHECK ("", 0, 0);
/* First occurance */
CHECK ("abcdabcd", 'b', 1);
/* 'c' converted to a char */
CHECK ("ABCDEF", 'A'+0x100, 0);
CHECK ("ABCDE\377", ~0, 5);
/* Very long string */
CHECK ("................................................................"
"................................................................"
"................................................................"
"...............................................................*"
"...............", '*', 255);
CHECK ("................................................................"
"................................................................"
"................................................................"
"................................................................"
"*..............", '*', 256);
CHECK ("................................................................"
"................................................................"
"................................................................"
"................................................................"
".*.............", '*', 257);
return 0;
}
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