canonical_url

The UrlCanonicalizer is used for the process of converting an URL into a canonical (normalized) form. It will:

• make scheme and host lowercase
• remove port if it matches the default (80, 443)
• canonicalize path (e.g. /a/../, /a/./)
• sort query parameters (default)
• use query parameter ordering (optional)
• whitelist / blacklist parameters (optional)
• remove fragment (optional)

It can also calculate the url relative to a context (e.g. base url + relative link).

Usage

A simple usage example:

import 'package:canonical_url/canonical_url.dart';

main() {
  final urlc = new UrlCanonicalizer(removeFragment: true);

  // prints http://example.com/b.txt
  print(urlc.canonicalize('http://example.com:80/a/../b.txt'));

  // prints https://example.com/abc
  print(urlc.canonicalize('https://example.com/abc#xyz'));

  // prints http://example.com/api?a=2&b=3&c=1
  print(urlc.canonicalize('http://example.com/api?c=1&a=2&b=3'));
}