| 4710c53d |
1 | """Filename globbing utility."""\r |
| 2 | \r |
| 3 | import sys\r |
| 4 | import os\r |
| 5 | import re\r |
| 6 | import fnmatch\r |
| 7 | \r |
| 8 | __all__ = ["glob", "iglob"]\r |
| 9 | \r |
| 10 | def glob(pathname):\r |
| 11 | """Return a list of paths matching a pathname pattern.\r |
| 12 | \r |
| 13 | The pattern may contain simple shell-style wildcards a la fnmatch.\r |
| 14 | \r |
| 15 | """\r |
| 16 | return list(iglob(pathname))\r |
| 17 | \r |
| 18 | def iglob(pathname):\r |
| 19 | """Return an iterator which yields the paths matching a pathname pattern.\r |
| 20 | \r |
| 21 | The pattern may contain simple shell-style wildcards a la fnmatch.\r |
| 22 | \r |
| 23 | """\r |
| 24 | if not has_magic(pathname):\r |
| 25 | if os.path.lexists(pathname):\r |
| 26 | yield pathname\r |
| 27 | return\r |
| 28 | dirname, basename = os.path.split(pathname)\r |
| 29 | if not dirname:\r |
| 30 | for name in glob1(os.curdir, basename):\r |
| 31 | yield name\r |
| 32 | return\r |
| 33 | if has_magic(dirname):\r |
| 34 | dirs = iglob(dirname)\r |
| 35 | else:\r |
| 36 | dirs = [dirname]\r |
| 37 | if has_magic(basename):\r |
| 38 | glob_in_dir = glob1\r |
| 39 | else:\r |
| 40 | glob_in_dir = glob0\r |
| 41 | for dirname in dirs:\r |
| 42 | for name in glob_in_dir(dirname, basename):\r |
| 43 | yield os.path.join(dirname, name)\r |
| 44 | \r |
| 45 | # These 2 helper functions non-recursively glob inside a literal directory.\r |
| 46 | # They return a list of basenames. `glob1` accepts a pattern while `glob0`\r |
| 47 | # takes a literal basename (so it only has to check for its existence).\r |
| 48 | \r |
| 49 | def glob1(dirname, pattern):\r |
| 50 | if not dirname:\r |
| 51 | dirname = os.curdir\r |
| 52 | if isinstance(pattern, unicode) and not isinstance(dirname, unicode):\r |
| 53 | dirname = unicode(dirname, sys.getfilesystemencoding() or\r |
| 54 | sys.getdefaultencoding())\r |
| 55 | try:\r |
| 56 | names = os.listdir(dirname)\r |
| 57 | except os.error:\r |
| 58 | return []\r |
| 59 | if pattern[0] != '.':\r |
| 60 | names = filter(lambda x: x[0] != '.', names)\r |
| 61 | return fnmatch.filter(names, pattern)\r |
| 62 | \r |
| 63 | def glob0(dirname, basename):\r |
| 64 | if basename == '':\r |
| 65 | # `os.path.split()` returns an empty basename for paths ending with a\r |
| 66 | # directory separator. 'q*x/' should match only directories.\r |
| 67 | if os.path.isdir(dirname):\r |
| 68 | return [basename]\r |
| 69 | else:\r |
| 70 | if os.path.lexists(os.path.join(dirname, basename)):\r |
| 71 | return [basename]\r |
| 72 | return []\r |
| 73 | \r |
| 74 | \r |
| 75 | magic_check = re.compile('[*?[]')\r |
| 76 | \r |
| 77 | def has_magic(s):\r |
| 78 | return magic_check.search(s) is not None\r |
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