urlcanon

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
An alternative URL serialization suitable for sorting and prefix-matching: SSURT.

Status: Stable and in production use for some time. But no API or output stability guarantees yet. There are differences in features between Java and Python versions.

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

Python releases are available in PyPI:

pip install urlcanon

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"

Java releases are available in the Maven Central repository:

<dependency>
    <groupId>org.netpreserve</groupId>
    <artifactId>urlcanon</artifactId>
    <version>0.1.1</version>
</dependency>

License

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.

Metadata

Release files for urlcanon 0.3.1

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for urlcanon 0.3.1
File	Size	Uploaded
urlcanon-0.3.1.tar.gz	13.5 kB	Jul 2, 2019	Details

Release files / urlcanon-0.3.1.tar.gz

Download URL	urlcanon-0.3.1.tar.gz
Size	13.5 kB
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SHA-256 checksum How to use checksums	`30f5bf0e2e4a0feb6dd9ee139a4180a5d493117e8a1448569da3d73c18b92b62`
BLAKE2b-256 checksum How to use checksums	`cb65222a5733af4c6d728fa90b0dcead218b3b0460eacdae22bb9ecdea1bbe5d`
Upload date	Jul 2, 2019
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`Python-urllib/3.7`