Viewing file: glob.py (2.2 KB) -rw-r--r-- Select action/file-type: (+) | (+) | (+) | Code (+) | Session (+) | (+) | SDB (+) | (+) | (+) | (+) | (+) | (+) |
"""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
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