mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-07-23 03:05:38 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 15

GH-82805: Fix handling of single-dot file extensions in pathlib (#118952)

Browse source 
pathlib now treats "`.`" as a valid file extension (suffix). This brings
it in line with `os.path.splitext()`.

In the (private) pathlib ABCs, we add a new `ParserBase.splitext()` method
that splits a path into a `(root, ext)` pair, like `os.path.splitext()`.
This method is called by `PurePathBase.stem`, `suffix`, etc. In a future
version of pathlib, we might make these base classes public, and so users
will be able to define their own `splitext()` method to control file
extension splitting.

In `pathlib.PurePath` we add optimised `stem`, `suffix` and `suffixes`
properties that don't use `splitext()`, which avoids computing the path
base name twice.
This commit is contained in:
Barney Gale 2024-05-25 21:01:36 +01:00 • committed by GitHub
parent 0c5ebe13e9
commit e418fc3a6e
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
5 changed files with 101 additions and 35 deletions
Download patch file Download diff file Expand all files Collapse all files

50
Lib/test/test_pathlib/test_pathlib_abc.py
View file

@ -50,6 +50,7 @@ class ParserBaseTest(unittest.TestCase):
self.assertRaises(e, m.join, 'foo')
self.assertRaises(e, m.split, 'foo')
self.assertRaises(e, m.splitdrive, 'foo')
self.assertRaises(e, m.splitext, 'foo')
self.assertRaises(e, m.normcase, 'foo')
self.assertRaises(e, m.isabs, 'foo')
@ -789,8 +790,12 @@ class DummyPurePathTest(unittest.TestCase):
self.assertEqual(P('/a/.hg.rc').suffix, '.rc')
self.assertEqual(P('a/b.tar.gz').suffix, '.gz')
self.assertEqual(P('/a/b.tar.gz').suffix, '.gz')
self.assertEqual(P('a/Some name. Ending with a dot.').suffix, '')
self.assertEqual(P('/a/Some name. Ending with a dot.').suffix, '')
self.assertEqual(P('a/trailing.dot.').suffix, '.')
self.assertEqual(P('/a/trailing.dot.').suffix, '.')
self.assertEqual(P('a/..d.o.t..').suffix, '.')
self.assertEqual(P('a/inn.er..dots').suffix, '.dots')
self.assertEqual(P('photo').suffix, '')
self.assertEqual(P('photo.jpg').suffix, '.jpg')
@needs_windows
def test_suffix_windows(self):
@ -807,8 +812,8 @@ class DummyPurePathTest(unittest.TestCase):
self.assertEqual(P('c:/a/.hg.rc').suffix, '.rc')
self.assertEqual(P('c:a/b.tar.gz').suffix, '.gz')
self.assertEqual(P('c:/a/b.tar.gz').suffix, '.gz')
self.assertEqual(P('c:a/Some name. Ending with a dot.').suffix, '')
self.assertEqual(P('c:/a/Some name. Ending with a dot.').suffix, '')
self.assertEqual(P('c:a/trailing.dot.').suffix, '.')
self.assertEqual(P('c:/a/trailing.dot.').suffix, '.')
self.assertEqual(P('//My.py/Share.php').suffix, '')
self.assertEqual(P('//My.py/Share.php/a/b').suffix, '')
@ -828,8 +833,12 @@ class DummyPurePathTest(unittest.TestCase):
self.assertEqual(P('/a/.hg.rc').suffixes, ['.rc'])
self.assertEqual(P('a/b.tar.gz').suffixes, ['.tar', '.gz'])
self.assertEqual(P('/a/b.tar.gz').suffixes, ['.tar', '.gz'])
self.assertEqual(P('a/Some name. Ending with a dot.').suffixes, [])
self.assertEqual(P('/a/Some name. Ending with a dot.').suffixes, [])
self.assertEqual(P('a/trailing.dot.').suffixes, ['.dot', '.'])
self.assertEqual(P('/a/trailing.dot.').suffixes, ['.dot', '.'])
self.assertEqual(P('a/..d.o.t..').suffixes, ['.o', '.t', '.', '.'])
self.assertEqual(P('a/inn.er..dots').suffixes, ['.er', '.', '.dots'])
self.assertEqual(P('photo').suffixes, [])
self.assertEqual(P('photo.jpg').suffixes, ['.jpg'])
@needs_windows
def test_suffixes_windows(self):
@ -848,8 +857,8 @@ class DummyPurePathTest(unittest.TestCase):
self.assertEqual(P('c:/a/b.tar.gz').suffixes, ['.tar', '.gz'])
self.assertEqual(P('//My.py/Share.php').suffixes, [])
self.assertEqual(P('//My.py/Share.php/a/b').suffixes, [])
self.assertEqual(P('c:a/Some name. Ending with a dot.').suffixes, [])
self.assertEqual(P('c:/a/Some name. Ending with a dot.').suffixes, [])
self.assertEqual(P('c:a/trailing.dot.').suffixes, ['.dot', '.'])
self.assertEqual(P('c:/a/trailing.dot.').suffixes, ['.dot', '.'])
def test_stem_empty(self):
P = self.cls
@ -865,8 +874,11 @@ class DummyPurePathTest(unittest.TestCase):
self.assertEqual(P('a/.hgrc').stem, '.hgrc')
self.assertEqual(P('a/.hg.rc').stem, '.hg')
self.assertEqual(P('a/b.tar.gz').stem, 'b.tar')
self.assertEqual(P('a/Some name. Ending with a dot.').stem,
'Some name. Ending with a dot.')
self.assertEqual(P('a/trailing.dot.').stem, 'trailing.dot')
self.assertEqual(P('a/..d.o.t..').stem, '..d.o.t.')
self.assertEqual(P('a/inn.er..dots').stem, 'inn.er.')
self.assertEqual(P('photo').stem, 'photo')
self.assertEqual(P('photo.jpg').stem, 'photo')
@needs_windows
def test_stem_windows(self):
@ -880,8 +892,8 @@ class DummyPurePathTest(unittest.TestCase):
self.assertEqual(P('c:a/.hgrc').stem, '.hgrc')
self.assertEqual(P('c:a/.hg.rc').stem, '.hg')
self.assertEqual(P('c:a/b.tar.gz').stem, 'b.tar')
self.assertEqual(P('c:a/Some name. Ending with a dot.').stem,
'Some name. Ending with a dot.')
self.assertEqual(P('c:a/trailing.dot.').stem, 'trailing.dot')
def test_with_name_common(self):
P = self.cls
self.assertEqual(P('a/b').with_name('d.xml'), P('a/d.xml'))
@ -929,16 +941,16 @@ class DummyPurePathTest(unittest.TestCase):
self.assertEqual(P('a/b.py').with_stem('d'), P('a/d.py'))
self.assertEqual(P('/a/b.py').with_stem('d'), P('/a/d.py'))
self.assertEqual(P('/a/b.tar.gz').with_stem('d'), P('/a/d.gz'))
self.assertEqual(P('a/Dot ending.').with_stem('d'), P('a/d'))
self.assertEqual(P('/a/Dot ending.').with_stem('d'), P('/a/d'))
self.assertEqual(P('a/Dot ending.').with_stem('d'), P('a/d.'))
self.assertEqual(P('/a/Dot ending.').with_stem('d'), P('/a/d.'))
@needs_windows
def test_with_stem_windows(self):
P = self.cls
self.assertEqual(P('c:a/b').with_stem('d'), P('c:a/d'))
self.assertEqual(P('c:/a/b').with_stem('d'), P('c:/a/d'))
self.assertEqual(P('c:a/Dot ending.').with_stem('d'), P('c:a/d'))
self.assertEqual(P('c:/a/Dot ending.').with_stem('d'), P('c:/a/d'))
self.assertEqual(P('c:a/Dot ending.').with_stem('d'), P('c:a/d.'))
self.assertEqual(P('c:/a/Dot ending.').with_stem('d'), P('c:/a/d.'))
self.assertRaises(ValueError, P('c:').with_stem, 'd')
self.assertRaises(ValueError, P('c:/').with_stem, 'd')
self.assertRaises(ValueError, P('//My/Share').with_stem, 'd')
@ -974,6 +986,11 @@ class DummyPurePathTest(unittest.TestCase):
# Stripping suffix.
self.assertEqual(P('a/b.py').with_suffix(''), P('a/b'))
self.assertEqual(P('/a/b').with_suffix(''), P('/a/b'))
# Single dot
self.assertEqual(P('a/b').with_suffix('.'), P('a/b.'))
self.assertEqual(P('/a/b').with_suffix('.'), P('/a/b.'))
self.assertEqual(P('a/b.py').with_suffix('.'), P('a/b.'))
self.assertEqual(P('/a/b.py').with_suffix('.'), P('/a/b.'))
@needs_windows
def test_with_suffix_windows(self):
@ -1012,7 +1029,6 @@ class DummyPurePathTest(unittest.TestCase):
# Invalid suffix.
self.assertRaises(ValueError, P('a/b').with_suffix, 'gz')
self.assertRaises(ValueError, P('a/b').with_suffix, '/')
self.assertRaises(ValueError, P('a/b').with_suffix, '.')
self.assertRaises(ValueError, P('a/b').with_suffix, '/.gz')
self.assertRaises(ValueError, P('a/b').with_suffix, 'c/d')
self.assertRaises(ValueError, P('a/b').with_suffix, '.c/.d')