Lib/glob.py

   1 """Filename globbing utility."""
   2
   3 import os
   4 import fnmatch
   5 import re
   6
   7 __all__ = ["glob"]
   8
   9 def glob(pathname):
  10     """Return a list of paths matching a pathname pattern.
  11
  12     The pattern may contain simple shell-style wildcards a la fnmatch.
  13
  14     """
  15     if not has_magic(pathname):
  16         if os.path.exists(pathname):
  17             return [pathname]
  18         else:
  19             return []
  20     dirname, basename = os.path.split(pathname)
  21     if not dirname:
  22         return glob1(os.curdir, basename)
  23     elif has_magic(dirname):
  24         list = glob(dirname)
  25     else:
  26         list = [dirname]
  27     if not has_magic(basename):
  28         result = []
  29         for dirname in list:
  30             if basename or os.path.isdir(dirname):
  31                 name = os.path.join(dirname, basename)
  32                 if os.path.exists(name):
  33                     result.append(name)
  34     else:
  35         result = []
  36         for dirname in list:
  37             sublist = glob1(dirname, basename)
  38             for name in sublist:
  39                 result.append(os.path.join(dirname, name))
  40     return result
  41
  42 def glob1(dirname, pattern):
  43     if not dirname: dirname = os.curdir
  44     try:
  45         names = os.listdir(dirname)
  46     except os.error:
  47         return []
  48     if pattern[0]!='.':
  49         names=filter(lambda x: x[0]!='.',names)
  50     return fnmatch.filter(names,pattern)
  51
  52
  53 magic_check = re.compile('[*?[]')
  54
  55 def has_magic(s):
  56     return magic_check.search(s) is not None