"""Filename globbing utility.""" import sys import os import re import fnmatch try: _unicode = unicode except NameError: # If Python is built without Unicode support, the unicode type # will not exist. Fake one. class _unicode(object): pass __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. """ dirname, basename = os.path.split(pathname) if not has_magic(pathname): if basename: if os.path.lexists(pathname): yield pathname else: # Patterns ending with a slash should match only directories if os.path.isdir(dirname): yield pathname return if not dirname: for name in glob1(os.curdir, 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: 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 SIMPAN PERUBAHAN