kopia lustrzana https://github.com/micropython/micropython-lib
glob: Add pristine fron CPython 3.3.3.
Paul Sokolovsky
rodzic
47fd37fc72
commit
3409396c10
94
glob/glob.py
94
glob/glob.py
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"""Filename globbing utility."""
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import os
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import re
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import fnmatch
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__all__ = ["glob", "iglob"]
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def glob(pathname):
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"""Return a list of paths matching a pathname pattern.
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The pattern may contain simple shell-style wildcards a la
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fnmatch. However, unlike fnmatch, filenames starting with a
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dot are special cases that are not matched by '*' and '?'
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patterns.
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"""
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return list(iglob(pathname))
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def iglob(pathname):
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"""Return an iterator which yields the paths matching a pathname pattern.
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The pattern may contain simple shell-style wildcards a la
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fnmatch. However, unlike fnmatch, filenames starting with a
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dot are special cases that are not matched by '*' and '?'
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patterns.
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"""
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if not has_magic(pathname):
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if os.path.lexists(pathname):
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yield pathname
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return
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dirname, basename = os.path.split(pathname)
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if not dirname:
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for name in glob1(None, basename):
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yield name
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return
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# `os.path.split()` returns the argument itself as a dirname if it is a
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# drive or UNC path. Prevent an infinite recursion if a drive or UNC path
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# contains magic characters (i.e. r'\\?\C:').
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if dirname != pathname and has_magic(dirname):
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dirs = iglob(dirname)
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else:
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dirs = [dirname]
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if has_magic(basename):
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glob_in_dir = glob1
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else:
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glob_in_dir = glob0
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for dirname in dirs:
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for name in glob_in_dir(dirname, basename):
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yield os.path.join(dirname, name)
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# These 2 helper functions non-recursively glob inside a literal directory.
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# They return a list of basenames. `glob1` accepts a pattern while `glob0`
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# takes a literal basename (so it only has to check for its existence).
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def glob1(dirname, pattern):
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if not dirname:
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if isinstance(pattern, bytes):
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dirname = bytes(os.curdir, 'ASCII')
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else:
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dirname = os.curdir
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try:
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names = os.listdir(dirname)
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except os.error:
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return []
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if not _ishidden(pattern):
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names = [x for x in names if not _ishidden(x)]
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return fnmatch.filter(names, pattern)
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def glob0(dirname, basename):
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if not basename:
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# `os.path.split()` returns an empty basename for paths ending with a
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# directory separator. 'q*x/' should match only directories.
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if os.path.isdir(dirname):
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return [basename]
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else:
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if os.path.lexists(os.path.join(dirname, basename)):
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return [basename]
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return []
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magic_check = re.compile('[*?[]')
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magic_check_bytes = re.compile(b'[*?[]')
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def has_magic(s):
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if isinstance(s, bytes):
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match = magic_check_bytes.search(s)
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else:
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match = magic_check.search(s)
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return match is not None
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def _ishidden(path):
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return path[0] in ('.', b'.'[0])
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@ -0,0 +1,178 @@
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import glob
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import os
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import shutil
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import sys
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import unittest
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from test.support import (run_unittest, TESTFN, skip_unless_symlink,
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can_symlink, create_empty_file)
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class GlobTests(unittest.TestCase):
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def norm(self, *parts):
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return os.path.normpath(os.path.join(self.tempdir, *parts))
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def mktemp(self, *parts):
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filename = self.norm(*parts)
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base, file = os.path.split(filename)
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if not os.path.exists(base):
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os.makedirs(base)
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create_empty_file(filename)
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def setUp(self):
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self.tempdir = TESTFN + "_dir"
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self.mktemp('a', 'D')
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self.mktemp('aab', 'F')
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self.mktemp('.aa', 'G')
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self.mktemp('.bb', 'H')
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self.mktemp('aaa', 'zzzF')
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self.mktemp('ZZZ')
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self.mktemp('a', 'bcd', 'EF')
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self.mktemp('a', 'bcd', 'efg', 'ha')
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if can_symlink():
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os.symlink(self.norm('broken'), self.norm('sym1'))
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os.symlink('broken', self.norm('sym2'))
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os.symlink(os.path.join('a', 'bcd'), self.norm('sym3'))
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def tearDown(self):
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shutil.rmtree(self.tempdir)
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def glob(self, *parts):
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if len(parts) == 1:
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pattern = parts[0]
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else:
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pattern = os.path.join(*parts)
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p = os.path.join(self.tempdir, pattern)
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res = glob.glob(p)
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self.assertEqual(list(glob.iglob(p)), res)
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bres = [os.fsencode(x) for x in res]
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self.assertEqual(glob.glob(os.fsencode(p)), bres)
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self.assertEqual(list(glob.iglob(os.fsencode(p))), bres)
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return res
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def assertSequencesEqual_noorder(self, l1, l2):
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l1 = list(l1)
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l2 = list(l2)
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self.assertEqual(set(l1), set(l2))
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self.assertEqual(sorted(l1), sorted(l2))
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def test_glob_literal(self):
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eq = self.assertSequencesEqual_noorder
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eq(self.glob('a'), [self.norm('a')])
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eq(self.glob('a', 'D'), [self.norm('a', 'D')])
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eq(self.glob('aab'), [self.norm('aab')])
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eq(self.glob('zymurgy'), [])
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res = glob.glob('*')
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self.assertEqual({type(r) for r in res}, {str})
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res = glob.glob(os.path.join(os.curdir, '*'))
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self.assertEqual({type(r) for r in res}, {str})
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res = glob.glob(b'*')
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self.assertEqual({type(r) for r in res}, {bytes})
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res = glob.glob(os.path.join(os.fsencode(os.curdir), b'*'))
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self.assertEqual({type(r) for r in res}, {bytes})
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def test_glob_one_directory(self):
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eq = self.assertSequencesEqual_noorder
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eq(self.glob('a*'), map(self.norm, ['a', 'aab', 'aaa']))
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eq(self.glob('*a'), map(self.norm, ['a', 'aaa']))
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eq(self.glob('.*'), map(self.norm, ['.aa', '.bb']))
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eq(self.glob('?aa'), map(self.norm, ['aaa']))
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eq(self.glob('aa?'), map(self.norm, ['aaa', 'aab']))
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eq(self.glob('aa[ab]'), map(self.norm, ['aaa', 'aab']))
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eq(self.glob('*q'), [])
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def test_glob_nested_directory(self):
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eq = self.assertSequencesEqual_noorder
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if os.path.normcase("abCD") == "abCD":
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# case-sensitive filesystem
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eq(self.glob('a', 'bcd', 'E*'), [self.norm('a', 'bcd', 'EF')])
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else:
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# case insensitive filesystem
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eq(self.glob('a', 'bcd', 'E*'), [self.norm('a', 'bcd', 'EF'),
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self.norm('a', 'bcd', 'efg')])
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eq(self.glob('a', 'bcd', '*g'), [self.norm('a', 'bcd', 'efg')])
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def test_glob_directory_names(self):
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eq = self.assertSequencesEqual_noorder
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eq(self.glob('*', 'D'), [self.norm('a', 'D')])
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eq(self.glob('*', '*a'), [])
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eq(self.glob('a', '*', '*', '*a'),
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[self.norm('a', 'bcd', 'efg', 'ha')])
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eq(self.glob('?a?', '*F'), [self.norm('aaa', 'zzzF'),
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self.norm('aab', 'F')])
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def test_glob_directory_with_trailing_slash(self):
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# Patterns ending with a slash shouldn't match non-dirs
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res = glob.glob(self.norm('Z*Z') + os.sep)
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self.assertEqual(res, [])
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res = glob.glob(self.norm('ZZZ') + os.sep)
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self.assertEqual(res, [])
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# When there is a wildcard pattern which ends with os.sep, glob()
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# doesn't blow up.
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res = glob.glob(self.norm('aa*') + os.sep)
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self.assertEqual(len(res), 2)
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# either of these results is reasonable
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self.assertIn(set(res), [
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{self.norm('aaa'), self.norm('aab')},
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{self.norm('aaa') + os.sep, self.norm('aab') + os.sep},
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])
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def test_glob_bytes_directory_with_trailing_slash(self):
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# Same as test_glob_directory_with_trailing_slash, but with a
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# bytes argument.
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res = glob.glob(os.fsencode(self.norm('Z*Z') + os.sep))
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self.assertEqual(res, [])
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res = glob.glob(os.fsencode(self.norm('ZZZ') + os.sep))
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self.assertEqual(res, [])
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res = glob.glob(os.fsencode(self.norm('aa*') + os.sep))
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self.assertEqual(len(res), 2)
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# either of these results is reasonable
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self.assertIn(set(res), [
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{os.fsencode(self.norm('aaa')),
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os.fsencode(self.norm('aab'))},
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{os.fsencode(self.norm('aaa') + os.sep),
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os.fsencode(self.norm('aab') + os.sep)},
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])
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@skip_unless_symlink
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def test_glob_symlinks(self):
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eq = self.assertSequencesEqual_noorder
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eq(self.glob('sym3'), [self.norm('sym3')])
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eq(self.glob('sym3', '*'), [self.norm('sym3', 'EF'),
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self.norm('sym3', 'efg')])
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self.assertIn(self.glob('sym3' + os.sep),
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[[self.norm('sym3')], [self.norm('sym3') + os.sep]])
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eq(self.glob('*', '*F'),
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[self.norm('aaa', 'zzzF'),
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self.norm('aab', 'F'), self.norm('sym3', 'EF')])
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@skip_unless_symlink
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def test_glob_broken_symlinks(self):
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eq = self.assertSequencesEqual_noorder
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eq(self.glob('sym*'), [self.norm('sym1'), self.norm('sym2'),
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self.norm('sym3')])
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eq(self.glob('sym1'), [self.norm('sym1')])
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eq(self.glob('sym2'), [self.norm('sym2')])
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@unittest.skipUnless(sys.platform == "win32", "Win32 specific test")
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def test_glob_magic_in_drive(self):
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eq = self.assertSequencesEqual_noorder
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eq(glob.glob('*:'), [])
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eq(glob.glob(b'*:'), [])
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eq(glob.glob('?:'), [])
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eq(glob.glob(b'?:'), [])
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eq(glob.glob('\\\\?\\c:\\'), ['\\\\?\\c:\\'])
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eq(glob.glob(b'\\\\?\\c:\\'), [b'\\\\?\\c:\\'])
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eq(glob.glob('\\\\*\\*\\'), [])
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eq(glob.glob(b'\\\\*\\*\\'), [])
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def test_main():
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run_unittest(GlobTests)
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if __name__ == "__main__":
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test_main()
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