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 has_magic(dirname):
  22         list = glob(dirname)
  23     else:
  24         list = [dirname]
  25     if not has_magic(basename):
  26         result = []
  27         for dirname in list:
  28             if basename or os.path.isdir(dirname):
  29                 name = os.path.join(dirname, basename)
  30                 if os.path.exists(name):
  31                     result.append(name)
  32     else:
  33         result = []
  34         for dirname in list:
  35             sublist = glob1(dirname, basename)
  36             for name in sublist:
  37                 result.append(os.path.join(dirname, name))
  38     return result
  39
  40 def glob1(dirname, pattern):
  41     if not dirname: dirname = os.curdir
  42     try:
  43         names = os.listdir(dirname)
  44     except os.error:
  45         return []
  46     result = []
  47     for name in names:
  48         if name[0] != '.' or pattern[0] == '.':
  49             if fnmatch.fnmatch(name, pattern):
  50                 result.append(name)
  51     return result
  52
  53
  54 magic_check = re.compile('[*?[]')
  55
  56 def has_magic(s):
  57     return magic_check.search(s) is not None