Function initcap_utf8view

datafusion/functions/src/unicode/initcap.rs:245–273

(args: &[ArrayRef])

}

fn initcap_utf8view(args: &[ArrayRef]) -> Result<ArrayRef> {
    let string_view_array = as_string_view_array(&args[0])?;
    let len = string_view_array.len();
    let mut builder = StringViewArrayBuilder::with_capacity(len);
    let mut container = String::new();

    let nulls = string_view_array.nulls().cloned();
    if let Some(ref n) = nulls {
        for i in 0..len {
            if n.is_null(i) {
                builder.append_placeholder();
            } else {
                // SAFETY: not null per check above.
                let s = unsafe { string_view_array.value_unchecked(i) };
                initcap_string(s, &mut container);
                builder.append_value(&container);
            }
        }
    } else {
        for i in 0..len {
            // SAFETY: no null buffer means every index is valid.
            let s = unsafe { string_view_array.value_unchecked(i) };
            initcap_string(s, &mut container);
            builder.append_value(&container);
        }
    }

    Ok(Arc::new(builder.finish(nulls)?) as ArrayRef)
}

fn initcap_string(input: &str, container: &mut String) {
    container.clear();