Function lua_tobuffer

pub unsafe extern "C-unwind" fn lua_tobuffer(
    L: *mut lua_State,
    idx: c_int,
    len: *mut usize,
) -> *mut c_void

Returns the buffer at the given index.

If the value at the given index is not a buffer, this function will return null. Otherwise, it will return a pointer to the buffer’s data.

If len is not null, it will be set to the length of the buffer.