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feat: add join method to Url class #1378

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feat: add join method to Url class #1378

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a7d9351
feat: add `join` method to `Url` class
Meetesh-Saini Jul 29, 2024
7ef57ba
Merge branch 'pydantic:main' into dev-url-join
Meetesh-Saini Sep 27, 2024
e8bd322
refactor(url): Update URL join function and add corresponding tests
Meetesh-Saini Sep 28, 2024
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12 changes: 12 additions & 0 deletions python/pydantic_core/_pydantic_core.pyi
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Original file line number Diff line number Diff line change
Expand Up @@ -606,6 +606,18 @@ class Url(SupportsAllComparisons):
An instance of URL
"""

def join(self, path: str, trailing_slash: bool = True) -> Self:
"""
Parse a string `path` as an URL, using this URL as the base.

Args:
path: The string (typically a relative URL) to parse and join with the base URL.
trailing_slash: Whether to append a trailing slash at the end of the URL.

Returns:
A new `Url` instance
"""

class MultiHostUrl(SupportsAllComparisons):
"""
A URL type with support for multiple hosts, as used by some databases for DSNs, e.g. `https://foo.com,bar.com/path`.
Expand Down
28 changes: 28 additions & 0 deletions src/url.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -155,6 +155,14 @@ impl PyUrl {
(self.__str__(),)
}

fn __truediv__(&self, other: &str) -> PyResult<Self> {
self.join(other, true)
}

fn __floordiv__(&self, other: &str) -> PyResult<Self> {
self.join(other, false)
}

#[classmethod]
#[pyo3(signature=(*, scheme, host, username=None, password=None, port=None, path=None, query=None, fragment=None))]
#[allow(clippy::too_many_arguments)]
Expand Down Expand Up @@ -190,6 +198,26 @@ impl PyUrl {
}
cls.call1((url,))
}

#[pyo3(signature=(path, trailing_slash=true))]
pub fn join(&self, path: &str, trailing_slash: bool) -> PyResult<Self> {
let mut new_url = self
.lib_url
.join(path)
.map_err(|err| PyValueError::new_err(err.to_string()))?;

if !trailing_slash || new_url.query().is_some() || new_url.fragment().is_some() || new_url.cannot_be_a_base() {
return Ok(PyUrl::new(new_url));
}

new_url
.path_segments_mut()
.map_err(|()| PyValueError::new_err("Url cannot be a base"))?
.pop_if_empty()
.push("");

Ok(PyUrl::new(new_url))
}
}

#[pyclass(name = "MultiHostUrl", module = "pydantic_core._pydantic_core", subclass, frozen)]
Expand Down
151 changes: 151 additions & 0 deletions tests/validators/test_url.py
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,10 @@

from ..conftest import Err, PyAndJson

SIMPLE_BASE = 'http://a/b/c/d'
QUERY_BASE = 'http://a/b/c/d;p?q'
QUERY_FRAGMENT_BASE = 'http://a/b/c/d;p?q#f'


def test_url_ok(py_and_json: PyAndJson):
v = py_and_json(core_schema.url_schema())
Expand Down Expand Up @@ -1299,3 +1303,150 @@ def test_url_build() -> None:
)
assert url == Url('postgresql://testuser:[email protected]:5432/database?sslmode=require#test')
assert str(url) == 'postgresql://testuser:[email protected]:5432/database?sslmode=require#test'


@pytest.mark.parametrize(
'base_url,join_path,expected_with_slash,expected_without_slash',
[
# Tests are based on the URL specification from https://url.spec.whatwg.org/
# Joining empty path with or without trailing slash should not affect the base url.
('http://example.com/', '', 'http://example.com/', 'http://example.com/'),
('svn://pathtorepo/dir1', 'dir2', 'svn://pathtorepo/dir2/', 'svn://pathtorepo/dir2'),
('svn+ssh://pathtorepo/dir1', 'dir2', 'svn+ssh://pathtorepo/dir2/', 'svn+ssh://pathtorepo/dir2'),
('ws://a/b', 'g', 'ws://a/g/', 'ws://a/g'),
('wss://a/b', 'g', 'wss://a/g/', 'wss://a/g'),
('http://a/b/c/de', ';x', 'http://a/b/c/;x/', 'http://a/b/c/;x'),
# Non-RFC-defined tests, covering variations of base and trailing
# slashes
('http://a/b/c/d/e/', '../../f/g/', 'http://a/b/c/f/g/', 'http://a/b/c/f/g/'),
('http://a/b/c/d/e', '../../f/g/', 'http://a/b/f/g/', 'http://a/b/f/g/'),
('http://a/b/c/d/e/', '/../../f/g/', 'http://a/f/g/', 'http://a/f/g/'),
('http://a/b/c/d/e', '/../../f/g/', 'http://a/f/g/', 'http://a/f/g/'),
('http://a/b/c/d/e/', '../../f/g', 'http://a/b/c/f/g/', 'http://a/b/c/f/g'),
('http://a/b/', '../../f/g/', 'http://a/f/g/', 'http://a/f/g/'),
(SIMPLE_BASE, 'g:h', 'g:h', 'g:h'),
(SIMPLE_BASE, 'g', 'http://a/b/c/g/', 'http://a/b/c/g'),
(SIMPLE_BASE, './g', 'http://a/b/c/g/', 'http://a/b/c/g'),
(SIMPLE_BASE, 'g/', 'http://a/b/c/g/', 'http://a/b/c/g/'),
(SIMPLE_BASE, '/g', 'http://a/g/', 'http://a/g'),
(SIMPLE_BASE, '//g', 'http://g/', 'http://g/'),
(SIMPLE_BASE, '?y', 'http://a/b/c/d?y', 'http://a/b/c/d?y'),
(SIMPLE_BASE, 'g?y', 'http://a/b/c/g?y', 'http://a/b/c/g?y'),
(SIMPLE_BASE, 'g?y/./x', 'http://a/b/c/g?y/./x', 'http://a/b/c/g?y/./x'),
(SIMPLE_BASE, '.', 'http://a/b/c/', 'http://a/b/c/'),
(SIMPLE_BASE, './', 'http://a/b/c/', 'http://a/b/c/'),
(SIMPLE_BASE, '..', 'http://a/b/', 'http://a/b/'),
(SIMPLE_BASE, '../', 'http://a/b/', 'http://a/b/'),
(SIMPLE_BASE, '../g', 'http://a/b/g/', 'http://a/b/g'),
(SIMPLE_BASE, '../..', 'http://a/', 'http://a/'),
(SIMPLE_BASE, '../../g', 'http://a/g/', 'http://a/g'),
(SIMPLE_BASE, './../g', 'http://a/b/g/', 'http://a/b/g'),
(SIMPLE_BASE, './g/.', 'http://a/b/c/g/', 'http://a/b/c/g/'),
(SIMPLE_BASE, 'g/./h', 'http://a/b/c/g/h/', 'http://a/b/c/g/h'),
(SIMPLE_BASE, 'g/../h', 'http://a/b/c/h/', 'http://a/b/c/h'),
(SIMPLE_BASE, 'http:g', 'http://a/b/c/g/', 'http://a/b/c/g'),
(SIMPLE_BASE, 'http:g?y', 'http://a/b/c/g?y', 'http://a/b/c/g?y'),
(SIMPLE_BASE, 'http:g?y/./x', 'http://a/b/c/g?y/./x', 'http://a/b/c/g?y/./x'),
(SIMPLE_BASE + '/', 'foo', SIMPLE_BASE + '/foo/', SIMPLE_BASE + '/foo'),
(QUERY_BASE, '?y', 'http://a/b/c/d;p?y', 'http://a/b/c/d;p?y'),
(QUERY_BASE, ';x', 'http://a/b/c/;x/', 'http://a/b/c/;x'),
(QUERY_BASE, 'g:h', 'g:h', 'g:h'),
(QUERY_BASE, 'g', 'http://a/b/c/g/', 'http://a/b/c/g'),
(QUERY_BASE, './g', 'http://a/b/c/g/', 'http://a/b/c/g'),
(QUERY_BASE, 'g/', 'http://a/b/c/g/', 'http://a/b/c/g/'),
(QUERY_BASE, '/g', 'http://a/g/', 'http://a/g'),
(QUERY_BASE, '//g', 'http://g/', 'http://g/'),
(QUERY_BASE, '?y', 'http://a/b/c/d;p?y', 'http://a/b/c/d;p?y'),
(QUERY_BASE, 'g?y', 'http://a/b/c/g?y', 'http://a/b/c/g?y'),
(QUERY_BASE, '#s', 'http://a/b/c/d;p?q#s', 'http://a/b/c/d;p?q#s'),
(QUERY_BASE, 'g#s', 'http://a/b/c/g#s', 'http://a/b/c/g#s'),
(QUERY_BASE, 'g?y#s', 'http://a/b/c/g?y#s', 'http://a/b/c/g?y#s'),
(QUERY_BASE, ';x', 'http://a/b/c/;x/', 'http://a/b/c/;x'),
(QUERY_BASE, 'g;x', 'http://a/b/c/g;x/', 'http://a/b/c/g;x'),
(QUERY_BASE, 'g;x?y#s', 'http://a/b/c/g;x?y#s', 'http://a/b/c/g;x?y#s'),
(QUERY_BASE, '', 'http://a/b/c/d;p?q', 'http://a/b/c/d;p?q'),
(QUERY_BASE, '.', 'http://a/b/c/', 'http://a/b/c/'),
(QUERY_BASE, './', 'http://a/b/c/', 'http://a/b/c/'),
(QUERY_BASE, '..', 'http://a/b/', 'http://a/b/'),
(QUERY_BASE, '../', 'http://a/b/', 'http://a/b/'),
(QUERY_BASE, '../g', 'http://a/b/g/', 'http://a/b/g'),
(QUERY_BASE, '../..', 'http://a/', 'http://a/'),
(QUERY_BASE, '../../', 'http://a/', 'http://a/'),
(QUERY_BASE, '../../g', 'http://a/g/', 'http://a/g'),
(QUERY_BASE, '../../../g', 'http://a/g/', 'http://a/g'),
# Abnormal Examples
(QUERY_BASE, '../../../g', 'http://a/g/', 'http://a/g'),
(QUERY_BASE, '../../../../g', 'http://a/g/', 'http://a/g'),
(QUERY_BASE, '/./g', 'http://a/g/', 'http://a/g'),
(QUERY_BASE, '/../g', 'http://a/g/', 'http://a/g'),
(QUERY_BASE, 'g.', 'http://a/b/c/g./', 'http://a/b/c/g.'),
(QUERY_BASE, '.g', 'http://a/b/c/.g/', 'http://a/b/c/.g'),
(QUERY_BASE, 'g..', 'http://a/b/c/g../', 'http://a/b/c/g..'),
(QUERY_BASE, '..g', 'http://a/b/c/..g/', 'http://a/b/c/..g'),
(QUERY_BASE, './../g', 'http://a/b/g/', 'http://a/b/g'),
(QUERY_BASE, './g/.', 'http://a/b/c/g/', 'http://a/b/c/g/'),
(QUERY_BASE, 'g/./h', 'http://a/b/c/g/h/', 'http://a/b/c/g/h'),
(QUERY_BASE, 'g/../h', 'http://a/b/c/h/', 'http://a/b/c/h'),
(QUERY_BASE, 'g;x=1/./y', 'http://a/b/c/g;x=1/y/', 'http://a/b/c/g;x=1/y'),
(QUERY_BASE, 'g;x=1/../y', 'http://a/b/c/y/', 'http://a/b/c/y'),
(QUERY_BASE, 'g?y/./x', 'http://a/b/c/g?y/./x', 'http://a/b/c/g?y/./x'),
(QUERY_BASE, 'g?y/../x', 'http://a/b/c/g?y/../x', 'http://a/b/c/g?y/../x'),
(QUERY_BASE, 'g#s/./x', 'http://a/b/c/g#s/./x', 'http://a/b/c/g#s/./x'),
(QUERY_BASE, 'g#s/../x', 'http://a/b/c/g#s/../x', 'http://a/b/c/g#s/../x'),
(QUERY_BASE, 'http:g', 'http://a/b/c/g/', 'http://a/b/c/g'),
# Test with empty (but defined) components.
(QUERY_FRAGMENT_BASE, '', 'http://a/b/c/d;p?q', 'http://a/b/c/d;p?q'),
(QUERY_FRAGMENT_BASE, '#', 'http://a/b/c/d;p?q#', 'http://a/b/c/d;p?q#'),
(QUERY_FRAGMENT_BASE, '#z', 'http://a/b/c/d;p?q#z', 'http://a/b/c/d;p?q#z'),
(QUERY_FRAGMENT_BASE, '?', 'http://a/b/c/d;p?', 'http://a/b/c/d;p?'),
(QUERY_FRAGMENT_BASE, '?#z', 'http://a/b/c/d;p?#z', 'http://a/b/c/d;p?#z'),
(QUERY_FRAGMENT_BASE, '?y', 'http://a/b/c/d;p?y', 'http://a/b/c/d;p?y'),
(QUERY_FRAGMENT_BASE, ';', 'http://a/b/c/;/', 'http://a/b/c/;'),
(QUERY_FRAGMENT_BASE, ';?y', 'http://a/b/c/;?y', 'http://a/b/c/;?y'),
(QUERY_FRAGMENT_BASE, ';#z', 'http://a/b/c/;#z', 'http://a/b/c/;#z'),
(QUERY_FRAGMENT_BASE, ';x', 'http://a/b/c/;x/', 'http://a/b/c/;x'),
(QUERY_FRAGMENT_BASE, '/w', 'http://a/w/', 'http://a/w'),
(QUERY_FRAGMENT_BASE, '//;x', 'http://;x/', 'http://;x/'),
(QUERY_FRAGMENT_BASE, '//v', 'http://v/', 'http://v/'),
# For backward compatibility with RFC1630, the scheme name is allowed
# to be present in a relative reference if it is the same as the base
# URI scheme.
(QUERY_FRAGMENT_BASE, 'http:', 'http://a/b/c/d;p?q', 'http://a/b/c/d;p?q'),
(QUERY_FRAGMENT_BASE, 'http:#', 'http://a/b/c/d;p?q#', 'http://a/b/c/d;p?q#'),
(QUERY_FRAGMENT_BASE, 'http:#z', 'http://a/b/c/d;p?q#z', 'http://a/b/c/d;p?q#z'),
(QUERY_FRAGMENT_BASE, 'http:?', 'http://a/b/c/d;p?', 'http://a/b/c/d;p?'),
(QUERY_FRAGMENT_BASE, 'http:?#z', 'http://a/b/c/d;p?#z', 'http://a/b/c/d;p?#z'),
(QUERY_FRAGMENT_BASE, 'http:?y', 'http://a/b/c/d;p?y', 'http://a/b/c/d;p?y'),
(QUERY_FRAGMENT_BASE, 'http:;', 'http://a/b/c/;/', 'http://a/b/c/;'),
(QUERY_FRAGMENT_BASE, 'http:;?y', 'http://a/b/c/;?y', 'http://a/b/c/;?y'),
(QUERY_FRAGMENT_BASE, 'http:;#z', 'http://a/b/c/;#z', 'http://a/b/c/;#z'),
(QUERY_FRAGMENT_BASE, 'http:;x', 'http://a/b/c/;x/', 'http://a/b/c/;x'),
(QUERY_FRAGMENT_BASE, 'http:/w', 'http://a/w/', 'http://a/w'),
(QUERY_FRAGMENT_BASE, 'http://;x', 'http://;x/', 'http://;x/'),
(QUERY_FRAGMENT_BASE, 'http:///w', 'http://w/', 'http://w/'),
(QUERY_FRAGMENT_BASE, 'http://v', 'http://v/', 'http://v/'),
# Different scheme is not ignored.
(QUERY_FRAGMENT_BASE, 'https:;', 'https://;/', 'https://;/'),
(QUERY_FRAGMENT_BASE, 'https:;x', 'https://;x/', 'https://;x/'),
],
)
def test_url_join(base_url, join_path, expected_with_slash, expected_without_slash) -> None:
"""Tests are based on
https://github.com/python/cpython/blob/3a0e7f57628466aedcaaf6c5ff7c8224f5155a2c/Lib/test/test_urlparse.py
and the URL specification from https://url.spec.whatwg.org/
"""
url = Url(base_url)
assert str(url.join(join_path, trailing_slash=True)) == expected_with_slash
assert str(url.join(join_path, trailing_slash=False)) == expected_without_slash


def test_url_join_operators() -> None:
url = Url('http://a/b/c/d')
assert str(url / 'e' / 'f') == 'http://a/b/c/e/f/'
assert str(url / 'e' // 'f') == 'http://a/b/c/e/f'
assert str(url // 'e' // 'f') == 'http://a/b/c/f'
assert str(url / 'e' / '?x=1') == 'http://a/b/c/e/?x=1'
assert str(url / 'e' / '?x=1' / '#y') == 'http://a/b/c/e/?x=1#y'
assert str(url / 'e' / '?x=1' // '#y') == 'http://a/b/c/e/?x=1#y'
assert str(url / 'e' // '?x=1' / '#y') == 'http://a/b/c/e/?x=1#y'
assert str(url // 'e' / '?x=1' / '#y') == 'http://a/b/c/e?x=1#y'