kopia lustrzana https://github.com/micropython/micropython-lib
96 wiersze
2.8 KiB
Python
96 wiersze
2.8 KiB
Python
"""Filename globbing utility."""
|
|
|
|
import os
|
|
import os.path
|
|
import re
|
|
import fnmatch
|
|
|
|
__all__ = ["glob", "iglob"]
|
|
|
|
def glob(pathname):
|
|
"""Return a list of paths matching a pathname pattern.
|
|
|
|
The pattern may contain simple shell-style wildcards a la
|
|
fnmatch. However, unlike fnmatch, filenames starting with a
|
|
dot are special cases that are not matched by '*' and '?'
|
|
patterns.
|
|
|
|
"""
|
|
return list(iglob(pathname))
|
|
|
|
def iglob(pathname):
|
|
"""Return an iterator which yields the paths matching a pathname pattern.
|
|
|
|
The pattern may contain simple shell-style wildcards a la
|
|
fnmatch. However, unlike fnmatch, filenames starting with a
|
|
dot are special cases that are not matched by '*' and '?'
|
|
patterns.
|
|
|
|
"""
|
|
if not has_magic(pathname):
|
|
if os.path.lexists(pathname):
|
|
yield pathname
|
|
return
|
|
dirname, basename = os.path.split(pathname)
|
|
if not dirname:
|
|
for name in glob1(None, basename):
|
|
yield name
|
|
return
|
|
# `os.path.split()` returns the argument itself as a dirname if it is a
|
|
# drive or UNC path. Prevent an infinite recursion if a drive or UNC path
|
|
# contains magic characters (i.e. r'\\?\C:').
|
|
if dirname != pathname and has_magic(dirname):
|
|
dirs = iglob(dirname)
|
|
else:
|
|
dirs = [dirname]
|
|
if has_magic(basename):
|
|
glob_in_dir = glob1
|
|
else:
|
|
glob_in_dir = glob0
|
|
for dirname in dirs:
|
|
for name in glob_in_dir(dirname, basename):
|
|
yield os.path.join(dirname, name)
|
|
|
|
# These 2 helper functions non-recursively glob inside a literal directory.
|
|
# They return a list of basenames. `glob1` accepts a pattern while `glob0`
|
|
# takes a literal basename (so it only has to check for its existence).
|
|
|
|
def glob1(dirname, pattern):
|
|
if not dirname:
|
|
if isinstance(pattern, bytes):
|
|
dirname = bytes(os.curdir, 'ASCII')
|
|
else:
|
|
dirname = os.curdir
|
|
try:
|
|
names = os.listdir(dirname)
|
|
except os.error:
|
|
return []
|
|
if not _ishidden(pattern):
|
|
names = [x for x in names if not _ishidden(x)]
|
|
return fnmatch.filter(names, pattern)
|
|
|
|
def glob0(dirname, basename):
|
|
if not basename:
|
|
# `os.path.split()` returns an empty basename for paths ending with a
|
|
# directory separator. 'q*x/' should match only directories.
|
|
if os.path.isdir(dirname):
|
|
return [basename]
|
|
else:
|
|
if os.path.lexists(os.path.join(dirname, basename)):
|
|
return [basename]
|
|
return []
|
|
|
|
|
|
magic_check = re.compile('[*?[]')
|
|
magic_check_bytes = re.compile(b'[*?[]')
|
|
|
|
def has_magic(s):
|
|
if isinstance(s, bytes):
|
|
match = magic_check_bytes.search(s)
|
|
else:
|
|
match = magic_check.search(s)
|
|
return match is not None
|
|
|
|
def _ishidden(path):
|
|
return path[0] in ('.', b'.'[0])
|