Function getRawQueryParam

context.go:351–370

getRawQueryParam returns the first value for name parsed directly from a raw URL query string. It matches url.Values.Get over url.ParseQuery output: first match wins, '+' decodes to space, percent escapes are decoded, segments containing ';' are skipped, and pairs whose key or value fail to unescape

(query, name string)

// escapes are decoded, segments containing ';' are skipped, and pairs whose key or value fail to
// unescape are skipped. It avoids allocating the full url.Values map for single-key lookups.
func getRawQueryParam(query, name string) string {
	for query != "" {
		var seg string
		seg, query, _ = strings.Cut(query, "&")
		if seg == "" || strings.Contains(seg, ";") {
			continue
		}
		key, value, _ := strings.Cut(seg, "=")
		k, err := url.QueryUnescape(key)
		if err != nil || k != name {
			continue
		}
		v, err := url.QueryUnescape(value)
		if err != nil {
			continue
		}
		return v
	}
	return ""
}

// QueryParamOr returns the query param or default value for the provided name.
// Note: QueryParamOr does not distinguish if query had no value by that name or value was empty string