fn canonicalize_query()

in src/aws/credential.rs [379:405]

• 24 lines of code
• 4 McCabe index (conditional complexity)

fn canonicalize_query(url: &Url) -> String {
    use std::fmt::Write;

    let capacity = match url.query() {
        Some(q) if !q.is_empty() => q.len(),
        _ => return String::new(),
    };
    let mut encoded = String::with_capacity(capacity + 1);

    let mut headers = url.query_pairs().collect::<Vec<_>>();
    headers.sort_unstable_by(|(a, _), (b, _)| a.cmp(b));

    let mut first = true;
    for (k, v) in headers {
        if !first {
            encoded.push('&');
        }
        first = false;
        let _ = write!(
            encoded,
            "{}={}",
            utf8_percent_encode(k.as_ref(), &STRICT_ENCODE_SET),
            utf8_percent_encode(v.as_ref(), &STRICT_ENCODE_SET)
        );
    }
    encoded
}