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/*
* Copyright (C) 2002 Manuel Novoa III
* Copyright (C) 2000-2005 Erik Andersen <andersen@uclibc.org>
*
* Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
*/
#include "_string.h"
#include <ctype.h>
libc_hidden_proto(tolower)
char *strcasestr(const char *s1, const char *s2)
{
register const char *s = s1;
register const char *p = s2;
#if 1
do {
if (!*p) {
return (char *) s1;;
}
if ((*p == *s)
|| (tolower(*((unsigned char *)p)) == tolower(*((unsigned char *)s)))
) {
++p;
++s;
} else {
p = s2;
if (!*s) {
return NULL;
}
s = ++s1;
}
} while (1);
#else
while (*p && *s) {
if ((*p == *s)
|| (tolower(*((unsigned char *)p)) == tolower(*((unsigned char *)s)))
) {
++p;
++s;
} else {
p = s2;
s = ++s1;
}
}
return (*p) ? NULL : (char *) s1;
#endif
}
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