--- a/env/lib/python3.7/site-packages/distlib/manifest.py	Thu May 14 16:47:39 2020 -0400
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,393 +0,0 @@
-# -*- coding: utf-8 -*-
-#
-# Copyright (C) 2012-2013 Python Software Foundation.
-# See LICENSE.txt and CONTRIBUTORS.txt.
-#
-"""
-Class representing the list of files in a distribution.
-
-Equivalent to distutils.filelist, but fixes some problems.
-"""
-import fnmatch
-import logging
-import os
-import re
-import sys
-
-from . import DistlibException
-from .compat import fsdecode
-from .util import convert_path
-
-
-__all__ = ['Manifest']
-
-logger = logging.getLogger(__name__)
-
-# a \ followed by some spaces + EOL
-_COLLAPSE_PATTERN = re.compile('\\\\w*\n', re.M)
-_COMMENTED_LINE = re.compile('#.*?(?=\n)|\n(?=$)', re.M | re.S)
-
-#
-# Due to the different results returned by fnmatch.translate, we need
-# to do slightly different processing for Python 2.7 and 3.2 ... this needed
-# to be brought in for Python 3.6 onwards.
-#
-_PYTHON_VERSION = sys.version_info[:2]
-
-class Manifest(object):
-    """A list of files built by on exploring the filesystem and filtered by
-    applying various patterns to what we find there.
-    """
-
-    def __init__(self, base=None):
-        """
-        Initialise an instance.
-
-        :param base: The base directory to explore under.
-        """
-        self.base = os.path.abspath(os.path.normpath(base or os.getcwd()))
-        self.prefix = self.base + os.sep
-        self.allfiles = None
-        self.files = set()
-
-    #
-    # Public API
-    #
-
-    def findall(self):
-        """Find all files under the base and set ``allfiles`` to the absolute
-        pathnames of files found.
-        """
-        from stat import S_ISREG, S_ISDIR, S_ISLNK
-
-        self.allfiles = allfiles = []
-        root = self.base
-        stack = [root]
-        pop = stack.pop
-        push = stack.append
-
-        while stack:
-            root = pop()
-            names = os.listdir(root)
-
-            for name in names:
-                fullname = os.path.join(root, name)
-
-                # Avoid excess stat calls -- just one will do, thank you!
-                stat = os.stat(fullname)
-                mode = stat.st_mode
-                if S_ISREG(mode):
-                    allfiles.append(fsdecode(fullname))
-                elif S_ISDIR(mode) and not S_ISLNK(mode):
-                    push(fullname)
-
-    def add(self, item):
-        """
-        Add a file to the manifest.
-
-        :param item: The pathname to add. This can be relative to the base.
-        """
-        if not item.startswith(self.prefix):
-            item = os.path.join(self.base, item)
-        self.files.add(os.path.normpath(item))
-
-    def add_many(self, items):
-        """
-        Add a list of files to the manifest.
-
-        :param items: The pathnames to add. These can be relative to the base.
-        """
-        for item in items:
-            self.add(item)
-
-    def sorted(self, wantdirs=False):
-        """
-        Return sorted files in directory order
-        """
-
-        def add_dir(dirs, d):
-            dirs.add(d)
-            logger.debug('add_dir added %s', d)
-            if d != self.base:
-                parent, _ = os.path.split(d)
-                assert parent not in ('', '/')
-                add_dir(dirs, parent)
-
-        result = set(self.files)    # make a copy!
-        if wantdirs:
-            dirs = set()
-            for f in result:
-                add_dir(dirs, os.path.dirname(f))
-            result |= dirs
-        return [os.path.join(*path_tuple) for path_tuple in
-                sorted(os.path.split(path) for path in result)]
-
-    def clear(self):
-        """Clear all collected files."""
-        self.files = set()
-        self.allfiles = []
-
-    def process_directive(self, directive):
-        """
-        Process a directive which either adds some files from ``allfiles`` to
-        ``files``, or removes some files from ``files``.
-
-        :param directive: The directive to process. This should be in a format
-                     compatible with distutils ``MANIFEST.in`` files:
-
-                     http://docs.python.org/distutils/sourcedist.html#commands
-        """
-        # Parse the line: split it up, make sure the right number of words
-        # is there, and return the relevant words.  'action' is always
-        # defined: it's the first word of the line.  Which of the other
-        # three are defined depends on the action; it'll be either
-        # patterns, (dir and patterns), or (dirpattern).
-        action, patterns, thedir, dirpattern = self._parse_directive(directive)
-
-        # OK, now we know that the action is valid and we have the
-        # right number of words on the line for that action -- so we
-        # can proceed with minimal error-checking.
-        if action == 'include':
-            for pattern in patterns:
-                if not self._include_pattern(pattern, anchor=True):
-                    logger.warning('no files found matching %r', pattern)
-
-        elif action == 'exclude':
-            for pattern in patterns:
-                found = self._exclude_pattern(pattern, anchor=True)
-                #if not found:
-                #    logger.warning('no previously-included files '
-                #                   'found matching %r', pattern)
-
-        elif action == 'global-include':
-            for pattern in patterns:
-                if not self._include_pattern(pattern, anchor=False):
-                    logger.warning('no files found matching %r '
-                                   'anywhere in distribution', pattern)
-
-        elif action == 'global-exclude':
-            for pattern in patterns:
-                found = self._exclude_pattern(pattern, anchor=False)
-                #if not found:
-                #    logger.warning('no previously-included files '
-                #                   'matching %r found anywhere in '
-                #                   'distribution', pattern)
-
-        elif action == 'recursive-include':
-            for pattern in patterns:
-                if not self._include_pattern(pattern, prefix=thedir):
-                    logger.warning('no files found matching %r '
-                                   'under directory %r', pattern, thedir)
-
-        elif action == 'recursive-exclude':
-            for pattern in patterns:
-                found = self._exclude_pattern(pattern, prefix=thedir)
-                #if not found:
-                #    logger.warning('no previously-included files '
-                #                   'matching %r found under directory %r',
-                #                   pattern, thedir)
-
-        elif action == 'graft':
-            if not self._include_pattern(None, prefix=dirpattern):
-                logger.warning('no directories found matching %r',
-                               dirpattern)
-
-        elif action == 'prune':
-            if not self._exclude_pattern(None, prefix=dirpattern):
-                logger.warning('no previously-included directories found '
-                               'matching %r', dirpattern)
-        else:   # pragma: no cover
-            # This should never happen, as it should be caught in
-            # _parse_template_line
-            raise DistlibException(
-                'invalid action %r' % action)
-
-    #
-    # Private API
-    #
-
-    def _parse_directive(self, directive):
-        """
-        Validate a directive.
-        :param directive: The directive to validate.
-        :return: A tuple of action, patterns, thedir, dir_patterns
-        """
-        words = directive.split()
-        if len(words) == 1 and words[0] not in ('include', 'exclude',
-                                                'global-include',
-                                                'global-exclude',
-                                                'recursive-include',
-                                                'recursive-exclude',
-                                                'graft', 'prune'):
-            # no action given, let's use the default 'include'
-            words.insert(0, 'include')
-
-        action = words[0]
-        patterns = thedir = dir_pattern = None
-
-        if action in ('include', 'exclude',
-                      'global-include', 'global-exclude'):
-            if len(words) < 2:
-                raise DistlibException(
-                    '%r expects <pattern1> <pattern2> ...' % action)
-
-            patterns = [convert_path(word) for word in words[1:]]
-
-        elif action in ('recursive-include', 'recursive-exclude'):
-            if len(words) < 3:
-                raise DistlibException(
-                    '%r expects <dir> <pattern1> <pattern2> ...' % action)
-
-            thedir = convert_path(words[1])
-            patterns = [convert_path(word) for word in words[2:]]
-
-        elif action in ('graft', 'prune'):
-            if len(words) != 2:
-                raise DistlibException(
-                    '%r expects a single <dir_pattern>' % action)
-
-            dir_pattern = convert_path(words[1])
-
-        else:
-            raise DistlibException('unknown action %r' % action)
-
-        return action, patterns, thedir, dir_pattern
-
-    def _include_pattern(self, pattern, anchor=True, prefix=None,
-                         is_regex=False):
-        """Select strings (presumably filenames) from 'self.files' that
-        match 'pattern', a Unix-style wildcard (glob) pattern.
-
-        Patterns are not quite the same as implemented by the 'fnmatch'
-        module: '*' and '?'  match non-special characters, where "special"
-        is platform-dependent: slash on Unix; colon, slash, and backslash on
-        DOS/Windows; and colon on Mac OS.
-
-        If 'anchor' is true (the default), then the pattern match is more
-        stringent: "*.py" will match "foo.py" but not "foo/bar.py".  If
-        'anchor' is false, both of these will match.
-
-        If 'prefix' is supplied, then only filenames starting with 'prefix'
-        (itself a pattern) and ending with 'pattern', with anything in between
-        them, will match.  'anchor' is ignored in this case.
-
-        If 'is_regex' is true, 'anchor' and 'prefix' are ignored, and
-        'pattern' is assumed to be either a string containing a regex or a
-        regex object -- no translation is done, the regex is just compiled
-        and used as-is.
-
-        Selected strings will be added to self.files.
-
-        Return True if files are found.
-        """
-        # XXX docstring lying about what the special chars are?
-        found = False
-        pattern_re = self._translate_pattern(pattern, anchor, prefix, is_regex)
-
-        # delayed loading of allfiles list
-        if self.allfiles is None:
-            self.findall()
-
-        for name in self.allfiles:
-            if pattern_re.search(name):
-                self.files.add(name)
-                found = True
-        return found
-
-    def _exclude_pattern(self, pattern, anchor=True, prefix=None,
-                         is_regex=False):
-        """Remove strings (presumably filenames) from 'files' that match
-        'pattern'.
-
-        Other parameters are the same as for 'include_pattern()', above.
-        The list 'self.files' is modified in place. Return True if files are
-        found.
-
-        This API is public to allow e.g. exclusion of SCM subdirs, e.g. when
-        packaging source distributions
-        """
-        found = False
-        pattern_re = self._translate_pattern(pattern, anchor, prefix, is_regex)
-        for f in list(self.files):
-            if pattern_re.search(f):
-                self.files.remove(f)
-                found = True
-        return found
-
-    def _translate_pattern(self, pattern, anchor=True, prefix=None,
-                           is_regex=False):
-        """Translate a shell-like wildcard pattern to a compiled regular
-        expression.
-
-        Return the compiled regex.  If 'is_regex' true,
-        then 'pattern' is directly compiled to a regex (if it's a string)
-        or just returned as-is (assumes it's a regex object).
-        """
-        if is_regex:
-            if isinstance(pattern, str):
-                return re.compile(pattern)
-            else:
-                return pattern
-
-        if _PYTHON_VERSION > (3, 2):
-            # ditch start and end characters
-            start, _, end = self._glob_to_re('_').partition('_')
-
-        if pattern:
-            pattern_re = self._glob_to_re(pattern)
-            if _PYTHON_VERSION > (3, 2):
-                assert pattern_re.startswith(start) and pattern_re.endswith(end)
-        else:
-            pattern_re = ''
-
-        base = re.escape(os.path.join(self.base, ''))
-        if prefix is not None:
-            # ditch end of pattern character
-            if _PYTHON_VERSION <= (3, 2):
-                empty_pattern = self._glob_to_re('')
-                prefix_re = self._glob_to_re(prefix)[:-len(empty_pattern)]
-            else:
-                prefix_re = self._glob_to_re(prefix)
-                assert prefix_re.startswith(start) and prefix_re.endswith(end)
-                prefix_re = prefix_re[len(start): len(prefix_re) - len(end)]
-            sep = os.sep
-            if os.sep == '\\':
-                sep = r'\\'
-            if _PYTHON_VERSION <= (3, 2):
-                pattern_re = '^' + base + sep.join((prefix_re,
-                                                    '.*' + pattern_re))
-            else:
-                pattern_re = pattern_re[len(start): len(pattern_re) - len(end)]
-                pattern_re = r'%s%s%s%s.*%s%s' % (start, base, prefix_re, sep,
-                                                  pattern_re, end)
-        else:  # no prefix -- respect anchor flag
-            if anchor:
-                if _PYTHON_VERSION <= (3, 2):
-                    pattern_re = '^' + base + pattern_re
-                else:
-                    pattern_re = r'%s%s%s' % (start, base, pattern_re[len(start):])
-
-        return re.compile(pattern_re)
-
-    def _glob_to_re(self, pattern):
-        """Translate a shell-like glob pattern to a regular expression.
-
-        Return a string containing the regex.  Differs from
-        'fnmatch.translate()' in that '*' does not match "special characters"
-        (which are platform-specific).
-        """
-        pattern_re = fnmatch.translate(pattern)
-
-        # '?' and '*' in the glob pattern become '.' and '.*' in the RE, which
-        # IMHO is wrong -- '?' and '*' aren't supposed to match slash in Unix,
-        # and by extension they shouldn't match such "special characters" under
-        # any OS.  So change all non-escaped dots in the RE to match any
-        # character except the special characters (currently: just os.sep).
-        sep = os.sep
-        if os.sep == '\\':
-            # we're using a regex to manipulate a regex, so we need
-            # to escape the backslash twice
-            sep = r'\\\\'
-        escaped = r'\1[^%s]' % sep
-        pattern_re = re.sub(r'((?<!\\)(\\\\)*)\.', escaped, pattern_re)
-        return pattern_re