Function hdds_reader_topic_name 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn hdds_reader_topic_name(
    reader: *mut HddsDataReader,
    buf: *mut c_char,
    buf_len: usize,
    out_len: *mut usize,
) -> HddsError

Get the topic name for a reader

Safety

• reader must be a valid pointer
• buf must point to a buffer of at least buf_len bytes
• out_len must be a valid pointer

Returns

HddsError::HddsOk on success, writes topic name to buffer