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goada: Fast WHATWG URL library in Go

The goada library provides support for the WHATWG URL standard in Go.

Requirements

Go 1.20 or better.

Examples

url, nil := New("https://	www.GOoglé.com/./path/../path2/")
fmt.Println(url.Href()) // "https://www.xn--googl-fsa.com/path2/"

A common use of a URL parser is to take a URL string and normalize it. The WHATWG URL specification has been adopted by most browsers. Other tools, such as the Go runtime, follow the RFC 3986. The following table illustrates possible differences in practice (encoding of the host, encoding of the path):

string source	string value
input string	https://www.7-Eleven.com/Home/../Privacy/Montréal
ada's normalized string	https://www.xn--7eleven-506c.com/Home/Privacy/Montr%C3%A9al
curl 7.87	https://www.7-Eleven.com/Privacy/Montr%C3%A9al
Go runtime (`net/url`)	https://www.7-Eleven.com/Home/../Privacy/Montr%C3%A9al

The Go runtime (net/url) does not normalize hostnames, and it does not process pathnames properly.

Usage

import (
   "github.com/ada-url/goada"
   "fmt"
)

url, err := goada.New("https://www.GOogle.com")
if err != nil {
    t.Error("Expected no error")
}
fmt.Println(url.Href()) // prints https://www.google.com/
url.SetProtocol("http:")
url.SetHash("goada")
fmt.Println(url.Hash()) // prints #goada
fmt.Println(url.Href()) // prints http://www.google.com/#goada