Function file_ext

src/store/store.c:5650–5668

Get lowercase file extension from path */

/* Get lowercase file extension from path */
static const char *file_ext(const char *path) {
    if (!path) {
        return NULL;
    }
    const char *dot = strrchr(path, '.');
    if (!dot) {
        return NULL;
    }
    static CBM_TLS char buf[CBM_SZ_16];
    int len = (int)strlen(dot);
    if (len >= (int)sizeof(buf)) {
        return NULL;
    }
    for (int i = 0; i < len; i++) {
        buf[i] = (char)((dot[i] >= 'A' && dot[i] <= 'Z') ? dot[i] + CBM_SZ_32 : dot[i]);
    }
    buf[len] = '\0';
    return buf;
}

/* ── Architecture aspect implementations ───────────────────────── */