Function luabb_fromhex

lua/luautil.c:595–605

out should be appropriately sized */

/* out should be appropriately sized */
void luabb_fromhex(uint8_t *out, const uint8_t *in, size_t len)
{
    const uint8_t *end = in + len;
    while (in != end) {
        uint8_t i0 = tolower(*(in++));
        uint8_t i1 = tolower(*(in++));
        i0 -= isdigit(i0) ? '0' : ('a' - 0xa);
        i1 -= isdigit(i1) ? '0' : ('a' - 0xa);
        *(out++) = (i0 << 4) | i1;
    }
}