https://github.com/python/cpython
Tip revision: 74f4bd53e03ded8408bcc2de67cf0f5a4ac5b1a1 authored by Barry Warsaw on 23 February 2012, 15:59:38 UTC
Bump some more copyright years (as per PEP 101), since this is the first
Bump some more copyright years (as per PEP 101), since this is the first
Tip revision: 74f4bd5
glob.py
"""Filename globbing utility."""
import sys
import os
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.
"""
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.
"""
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(os.curdir, basename):
yield name
return
if 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:
dirname = os.curdir
if isinstance(pattern, unicode) and not isinstance(dirname, unicode):
dirname = unicode(dirname, sys.getfilesystemencoding() or
sys.getdefaultencoding())
try:
names = os.listdir(dirname)
except os.error:
return []
if pattern[0] != '.':
names = filter(lambda x: x[0] != '.', names)
return fnmatch.filter(names, pattern)
def glob0(dirname, basename):
if 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('[*?[]')
def has_magic(s):
return magic_check.search(s) is not None