Lib/glob.py

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