urlcanon 0.1.dev16

url canonicalization library for python and java

A URL canonicalization (normalization) library for Python and Java.

It currently provides:

• A URL parser which preserves the input bytes exactly

• A precanned canonicalization ruleset that tries to match the normalization implicit in the [parsing rules used by browsers](https://url.spec.whatwg.org/)

• An alternative URL serialization suitable for sorting and prefix-matching

Status: Early development. No API or output stability guarantees yet.

Examples

Python

>>> import urlcanon
>>> input_url = "http://///EXAMPLE.com:80/foo/../bar"
>>> parsed_url = urlcanon.parse_url(input_url)
>>> print(parsed_url)
http://///EXAMPLE.com:80/foo/../bar
>>> urlcanon.whatwg(parsed_url)
<urlcanon.parse.ParsedUrl object at 0x10eb13a58>
>>> print(parsed_url)
http://example.com/bar
>>> print(parsed_url.ssurt())
b'com,example,//:http/bar'
>>>
>>> rule = urlcanon.MatchRule(ssurt=b'com,example,//:http/bar')
>>> urlcanon.whatwg.rule_applies(rule, b'https://example..com/bar/baz')
False
>>> urlcanon.whatwg.rule_applies(rule, b'HTtp:////eXAMple.Com/bar//baz//..///quu')
True

Java

String inputUrl = "http://///EXAMPLE.com:80/foo/../bar";
ParsedUrl parsedUrl = ParsedUrl.parseUrl(inputUrl);

System.out.println(parsedUrl);
// http://///EXAMPLE.com:80/foo/../bar

Canonicalizer.WHATWG.canonicalize(parsedUrl);

System.out.println(parsedUrl);
// http://example.com/bar

System.out.println(parsedUrl.ssurt());
// "com,example,//:http/bar"

License

• Copyright (C) 2016-2017 Internet Archive

• Copyright (C) 2016-2017 National Library of Australia

Licensed under the Apache License, Version 2.0 (the “License”); you may not use this software except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.