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/* See LICENSE file for copyright and license details. */
#include "libsimple.h"
#ifndef TEST
char *
libsimple_strcasechr_inv(const char *s_, int c)
{
char *s = *(char **)(void *)&s_, lc = (char)tolower(c), uc = (char)toupper(c);
if (lc != uc)
for (; *s && (*s == lc || *s == uc); s++);
else
for (; *s && *s == lc; s++);
return *s ? s : NULL;
}
#else
#include "test.h"
int
main(void)
{
assert(!strcmpnul(libsimple_strcasechr_inv("xxoxx", 'x'), "oxx"));
assert(!strcmpnul(libsimple_strcasechr_inv("xxXxx", 'x'), NULL));
assert(!strcmpnul(libsimple_strcasechr_inv("XXoxx", 'x'), "oxx"));
assert(!strcmpnul(libsimple_strcasechr_inv("zzzzz", 'z'), NULL));
assert(!strcmpnul(libsimple_strcasechr_inv("", '\0'), NULL));
return 0;
}
#endif
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