--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/env/lib/python3.7/site-packages/glob2/impl.py	Sat May 02 07:14:21 2020 -0400
@@ -0,0 +1,216 @@
+"""Filename globbing utility."""
+
+from __future__ import absolute_import
+
+import sys
+import os
+import re
+from os.path import join
+from . import fnmatch
+
+try:
+    from itertools import imap
+except ImportError:
+    imap = map
+
+
+class Globber(object):
+
+    listdir = staticmethod(os.listdir)
+    isdir = staticmethod(os.path.isdir)
+    islink = staticmethod(os.path.islink)
+    exists = staticmethod(os.path.lexists)
+
+    def walk(self, top, followlinks=False, sep=None):
+        """A simplified version of os.walk (code copied) that uses
+        ``self.listdir``, and the other local filesystem methods.
+
+        Because we don't care about file/directory distinctions, only
+        a single list is returned.
+        """
+        try:
+            names = self.listdir(top)
+        except os.error as err:
+            return
+
+        items = []
+        for name in names:
+            items.append(name)
+
+        yield top, items
+
+        for name in items:
+            new_path = _join_paths([top, name], sep=sep)
+            if followlinks or not self.islink(new_path):
+                for x in self.walk(new_path, followlinks):
+                    yield x
+
+    def glob(self, pathname, with_matches=False, include_hidden=False, recursive=True,
+             norm_paths=True, case_sensitive=True, sep=None):
+        """Return a list of paths matching a pathname pattern.
+
+        The pattern may contain simple shell-style wildcards a la
+        fnmatch. However, unlike fnmatch, filenames starting with a
+        dot are special cases that are not matched by '*' and '?'
+        patterns.
+
+        If ``include_hidden`` is True, then files and folders starting with
+        a dot are also returned.
+        """
+        return list(self.iglob(pathname, with_matches, include_hidden,
+                               norm_paths, case_sensitive, sep))
+
+    def iglob(self, pathname, with_matches=False, include_hidden=False, recursive=True,
+              norm_paths=True, case_sensitive=True, sep=None):
+        """Return an iterator which yields the paths matching a pathname
+        pattern.
+
+        The pattern may contain simple shell-style wildcards a la
+        fnmatch. However, unlike fnmatch, filenames starting with a
+        dot are special cases that are not matched by '*' and '?'
+        patterns.
+
+        If ``with_matches`` is True, then for each matching path
+        a 2-tuple will be returned; the second element if the tuple
+        will be a list of the parts of the path that matched the individual
+        wildcards.
+
+        If ``include_hidden`` is True, then files and folders starting with
+        a dot are also returned.
+        """
+        result = self._iglob(pathname, True, include_hidden,
+                             norm_paths, case_sensitive, sep)
+        if with_matches:
+            return result
+        return imap(lambda s: s[0], result)
+
+    def _iglob(self, pathname, rootcall, include_hidden,
+               norm_paths, case_sensitive, sep):
+        """Internal implementation that backs :meth:`iglob`.
+
+        ``rootcall`` is required to differentiate between the user's call to
+        iglob(), and subsequent recursive calls, for the purposes of resolving
+        certain special cases of ** wildcards. Specifically, "**" is supposed
+        to include the current directory for purposes of globbing, but the
+        directory itself should never be returned. So if ** is the lastmost
+        part of the ``pathname`` given the user to the root call, we want to
+        ignore the current directory. For this, we need to know which the root
+        call is.
+        """
+
+        # Short-circuit if no glob magic
+        if not has_magic(pathname):
+            if self.exists(pathname):
+                yield pathname, ()
+            return
+
+        # If no directory part is left, assume the working directory
+        dirname, basename = os.path.split(pathname)
+
+        # If the directory is globbed, recurse to resolve.
+        # If at this point there is no directory part left, we simply
+        # continue with dirname="", which will search the current dir.
+        # `os.path.split()` returns the argument itself as a dirname if it is a
+        # drive or UNC path.  Prevent an infinite recursion if a drive or UNC path
+        # contains magic characters (i.e. r'\\?\C:').
+        if dirname != pathname and has_magic(dirname):
+            # Note that this may return files, which will be ignored
+            # later when we try to use them as directories.
+            # Prefiltering them here would only require more IO ops.
+            dirs = self._iglob(dirname, False, include_hidden,
+                               norm_paths, case_sensitive, sep)
+        else:
+            dirs = [(dirname, ())]
+
+        # Resolve ``basename`` expr for every directory found
+        for dirname, dir_groups in dirs:
+            for name, groups in self.resolve_pattern(dirname, basename,
+                                                     not rootcall, include_hidden,
+                                                     norm_paths, case_sensitive, sep):
+                yield _join_paths([dirname, name], sep=sep), dir_groups + groups
+
+    def resolve_pattern(self, dirname, pattern, globstar_with_root, include_hidden,
+                        norm_paths, case_sensitive, sep):
+        """Apply ``pattern`` (contains no path elements) to the
+        literal directory in ``dirname``.
+
+        If pattern=='', this will filter for directories. This is
+        a special case that happens when the user's glob expression ends
+        with a slash (in which case we only want directories). It simpler
+        and faster to filter here than in :meth:`_iglob`.
+        """
+
+        if sys.version_info[0] == 3:
+            if isinstance(pattern, bytes):
+                dirname = bytes(os.curdir, 'ASCII')
+        else:
+            if isinstance(pattern, unicode) and not isinstance(dirname, unicode):
+                dirname = unicode(dirname, sys.getfilesystemencoding() or
+                                           sys.getdefaultencoding())
+
+        # If no magic, short-circuit, only check for existence
+        if not has_magic(pattern):
+            if pattern == '':
+                if self.isdir(dirname):
+                    return [(pattern, ())]
+            else:
+                if self.exists(_join_paths([dirname, pattern], sep=sep)):
+                    return [(pattern, ())]
+            return []
+
+        if not dirname:
+            dirname = os.curdir
+
+        try:
+            if pattern == '**':
+                # Include the current directory in **, if asked; by adding
+                # an empty string as opposed to '.', we spare ourselves
+                # having to deal with os.path.normpath() later.
+                names = [''] if globstar_with_root else []
+                for top, entries in self.walk(dirname, sep=sep):
+                    _mkabs = lambda s: _join_paths([top[len(dirname) + 1:], s], sep=sep)
+                    names.extend(map(_mkabs, entries))
+                # Reset pattern so that fnmatch(), which does not understand
+                # ** specifically, will only return a single group match.
+                pattern = '*'
+            else:
+                names = self.listdir(dirname)
+        except os.error:
+            return []
+
+        if not include_hidden and not _ishidden(pattern):
+            # Remove hidden files, but take care to ensure
+            # that the empty string we may have added earlier remains.
+            # Do not filter out the '' that we might have added earlier
+            names = filter(lambda x: not x or not _ishidden(x), names)
+        return fnmatch.filter(names, pattern, norm_paths, case_sensitive, sep)
+
+
+default_globber = Globber()
+glob = default_globber.glob
+iglob = default_globber.iglob
+del default_globber
+
+
+magic_check = re.compile('[*?[]')
+magic_check_bytes = re.compile(b'[*?[]')
+
+
+def has_magic(s):
+    if isinstance(s, bytes):
+        match = magic_check_bytes.search(s)
+    else:
+        match = magic_check.search(s)
+    return match is not None
+
+
+def _ishidden(path):
+    return path[0] in ('.', b'.'[0])
+
+
+def _join_paths(paths, sep=None):
+    path = join(*paths)
+    if sep:
+        path = re.sub(r'\/', sep, path)  # cached internally
+    return path
+