[fio.git] / oslib / strcasestr.c

#include <ctype.h>
#include <stddef.h>

char *strcasestr(const char *s1, const char *s2)
{
	const char *s = s1;
	const char *p = s2;

	do {
		if (!*p)
			return (char *) s1;
		if ((*p == *s) ||
		    (tolower(*p) == tolower(*s))) {
			++p;
			++s;
		} else {
			p = s2;
			if (!*s)
				return NULL;
			s = ++s1;
		}
	} while (1);

	return *p ? NULL : (char *) s1;
}
Commit	Line	Data
	1	#include <ctype.h>
	2	#include <stddef.h>
	3
	4	char strcasestr(const char s1, const char *s2)
	5	{
	6	const char *s = s1;
	7	const char *p = s2;
	8
	9	do {
	10	if (!*p)
	11	return (char *) s1;
	12	if ((p == s) \|\|
	13	(tolower(p) == tolower(s))) {
	14	++p;
	15	++s;
	16	} else {
	17	p = s2;
	18	if (!*s)
	19	return NULL;
	20	s = ++s1;
	21	}
	22	} while (1);
	23
	24	return p ? NULL : (char ) s1;
	25	}