ref: 2d83ae8fb215c12f56e860f04217d5117dc44b43
dir: /sys/lib/python/glob.py/
"""Filename globbing utility.""" import os import fnmatch import re __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 a list of 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 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