djavu-asus/emacs/elpy/rpc-venv/lib/python3.11/site-packages/setuptools/glob.py

   1 """
   2 Filename globbing utility. Mostly a copy of `glob` from Python 3.5.
   3
   4 Changes include:
   5  * `yield from` and PEP3102 `*` removed.
   6  * Hidden files are not ignored.
   7 """
   8
   9 import os
  10 import re
  11 import fnmatch
  12
  13 __all__ = ["glob", "iglob", "escape"]
  14
  15
  16 def glob(pathname, recursive=False):
  17     """Return a list of paths matching a pathname pattern.
  18
  19     The pattern may contain simple shell-style wildcards a la
  20     fnmatch. However, unlike fnmatch, filenames starting with a
  21     dot are special cases that are not matched by '*' and '?'
  22     patterns.
  23
  24     If recursive is true, the pattern '**' will match any files and
  25     zero or more directories and subdirectories.
  26     """
  27     return list(iglob(pathname, recursive=recursive))
  28
  29
  30 def iglob(pathname, recursive=False):
  31     """Return an iterator which yields the paths matching a pathname pattern.
  32
  33     The pattern may contain simple shell-style wildcards a la
  34     fnmatch. However, unlike fnmatch, filenames starting with a
  35     dot are special cases that are not matched by '*' and '?'
  36     patterns.
  37
  38     If recursive is true, the pattern '**' will match any files and
  39     zero or more directories and subdirectories.
  40     """
  41     it = _iglob(pathname, recursive)
  42     if recursive and _isrecursive(pathname):
  43         s = next(it)  # skip empty string
  44         assert not s
  45     return it
  46
  47
  48 def _iglob(pathname, recursive):
  49     dirname, basename = os.path.split(pathname)
  50     glob_in_dir = glob2 if recursive and _isrecursive(basename) else glob1
  51
  52     if not has_magic(pathname):
  53         if basename:
  54             if os.path.lexists(pathname):
  55                 yield pathname
  56         else:
  57             # Patterns ending with a slash should match only directories
  58             if os.path.isdir(dirname):
  59                 yield pathname
  60         return
  61
  62     if not dirname:
  63         yield from glob_in_dir(dirname, basename)
  64         return
  65     # `os.path.split()` returns the argument itself as a dirname if it is a
  66     # drive or UNC path.  Prevent an infinite recursion if a drive or UNC path
  67     # contains magic characters (i.e. r'\\?\C:').
  68     if dirname != pathname and has_magic(dirname):
  69         dirs = _iglob(dirname, recursive)
  70     else:
  71         dirs = [dirname]
  72     if not has_magic(basename):
  73         glob_in_dir = glob0
  74     for dirname in dirs:
  75         for name in glob_in_dir(dirname, basename):
  76             yield os.path.join(dirname, name)
  77
  78
  79 # These 2 helper functions non-recursively glob inside a literal directory.
  80 # They return a list of basenames. `glob1` accepts a pattern while `glob0`
  81 # takes a literal basename (so it only has to check for its existence).
  82
  83
  84 def glob1(dirname, pattern):
  85     if not dirname:
  86         if isinstance(pattern, bytes):
  87             dirname = os.curdir.encode('ASCII')
  88         else:
  89             dirname = os.curdir
  90     try:
  91         names = os.listdir(dirname)
  92     except OSError:
  93         return []
  94     return fnmatch.filter(names, pattern)
  95
  96
  97 def glob0(dirname, basename):
  98     if not basename:
  99         # `os.path.split()` returns an empty basename for paths ending with a
 100         # directory separator.  'q*x/' should match only directories.
 101         if os.path.isdir(dirname):
 102             return [basename]
 103     else:
 104         if os.path.lexists(os.path.join(dirname, basename)):
 105             return [basename]
 106     return []
 107
 108
 109 # This helper function recursively yields relative pathnames inside a literal
 110 # directory.
 111
 112
 113 def glob2(dirname, pattern):
 114     assert _isrecursive(pattern)
 115     yield pattern[:0]
 116     for x in _rlistdir(dirname):
 117         yield x
 118
 119
 120 # Recursively yields relative pathnames inside a literal directory.
 121 def _rlistdir(dirname):
 122     if not dirname:
 123         if isinstance(dirname, bytes):
 124             dirname = os.curdir.encode('ASCII')
 125         else:
 126             dirname = os.curdir
 127     try:
 128         names = os.listdir(dirname)
 129     except os.error:
 130         return
 131     for x in names:
 132         yield x
 133         path = os.path.join(dirname, x) if dirname else x
 134         for y in _rlistdir(path):
 135             yield os.path.join(x, y)
 136
 137
 138 magic_check = re.compile('([*?[])')
 139 magic_check_bytes = re.compile(b'([*?[])')
 140
 141
 142 def has_magic(s):
 143     if isinstance(s, bytes):
 144         match = magic_check_bytes.search(s)
 145     else:
 146         match = magic_check.search(s)
 147     return match is not None
 148
 149
 150 def _isrecursive(pattern):
 151     if isinstance(pattern, bytes):
 152         return pattern == b'**'
 153     else:
 154         return pattern == '**'
 155
 156
 157 def escape(pathname):
 158     """Escape all special characters.
 159     """
 160     # Escaping is done by wrapping any of "*?[" between square brackets.
 161     # Metacharacters do not work in the drive part and shouldn't be escaped.
 162     drive, pathname = os.path.splitdrive(pathname)
 163     if isinstance(pathname, bytes):
 164         pathname = magic_check_bytes.sub(br'[\1]', pathname)
 165     else:
 166         pathname = magic_check.sub(r'[\1]', pathname)
 167     return drive + pathname