Function string_to_cstring_validated

bindings/rust/src/cmap.rs:289–298

(key: &str, maxlen: usize)

const CMAP_KEYNAME_MAXLENGTH: usize = 255;
fn string_to_cstring_validated(key: &str, maxlen: usize) -> Result<CString> {
    if maxlen > 0 && key.chars().count() >= maxlen {
        return Err(CsError::CsErrInvalidParam);
    }

    match CString::new(key) {
        Ok(n) => Ok(n),
        Err(_) => Err(CsError::CsErrLibrary),
    }
}

fn set_value(
    handle: &Handle,