fn buf_to_str()

in amazon-qldb-driver-core/src/ion_compat.rs [32:45]

• 10 lines of code
• 2 McCabe index (conditional complexity)

fn buf_to_str(buf: Vec<u8>) -> Result<String, Utf8Error> {
    // This should never be possible - writer is given a 4mb buffer
    // and should be writing a null terminated string. So if the last
    // byte is not NULL, something has gone horrifically wrong.
    if *buf.last().unwrap() != b'\0' {
        unreachable!()
    }

    unsafe {
        CStr::from_ptr(buf.as_ptr() as *const _)
            .to_str()
            .map(|s| s.trim_end().to_owned())
    }
}