Function Get

queryparam/queryparam.go:24–61

Get a query param by name without any dynamic allocations. For small numbers of query params, it is faster to call this method multiple times than to use `url.ParseQuery` and then call `Get` on the resulting `url.Values`. This method does not support multiple values for the same key, so using `val=1

(query, name string)

// This method does not support multiple values for the same key, so using
// `val=1,2,3` is preferable to `val=1&val=2&val=3`.
func Get(query, name string) string {
	pos := 0
	for pos < len(query) {
		end := strings.IndexRune(query[pos:], '=')
		if end == -1 {
			end = strings.IndexRune(query[pos:], '&')
		}

		if end == -1 {
			end = len(query)
		} else {
			end += pos
		}

		ueName, _ := url.QueryUnescape(query[pos:end])
		if ueName == name {
			if end == len(query) || query[end] == '&' {
				return "true"
			}
			pos = end + 1
			end = strings.IndexRune(query[pos:], '&')
			if end == -1 {
				end = len(query)
			} else {
				end += pos
			}
			escaped, _ := url.QueryUnescape(query[pos:end])
			return escaped
		}
		tmp := pos
		pos = strings.IndexRune(query[pos:], '&')
		if pos == -1 {
			break
		}
		pos += tmp + 1
	}
	return ""
}