Remove vendored pip since pip-pop is now compatible with pip v8

This means pip-pop will use the buildpack-installed pip 8, which doesn't
fail when encountering requirements files that use the new hash syntax.

Fixes #302.

vendor/pip-pop/pip/__main__.py

-from __future__ import absolute_import
-
-import os
-import sys
-
-# If we are running from a wheel, add the wheel to sys.path
-# This allows the usage python pip-*.whl/pip install pip-*.whl
-if __package__ == '':
-    # __file__ is pip-*.whl/pip/__main__.py
-    # first dirname call strips of '/__main__.py', second strips off '/pip'
-    # Resulting path is the name of the wheel itself
-    # Add that to sys.path so we can import pip
-    path = os.path.dirname(os.path.dirname(__file__))
-    sys.path.insert(0, path)
-
-import pip  # noqa
-
-if __name__ == '__main__':
-    sys.exit(pip.main())

vendor/pip-pop/pip/_vendor/README.rst

-Policy
-======
-
-Vendored libraries should not be modified except as required to actually
-successfully vendor them.
-
-
-Modifications
-=============
-
-* html5lib has been modified to import six from pip._vendor
-* pkg_resources has been modified to import _markerlib from pip._vendor
-* markerlib has been modified to import its API from pip._vendor
-* CacheControl has been modified to import it's dependencies from pip._vendor
-* progress has been modified to not use unicode literals for support for Python 3.2
-
-
-_markerlib and pkg_resources
-============================
-
-_markerlib and pkg_resources has been pulled in from setuptools 18.2
-
-
-Note to Downstream Distributors
-===============================
-
-Libraries are vendored/bundled inside of this directory in order to prevent
-end users from needing to manually install packages if they accidently remove
-something that pip depends on.
-
-All bundled packages exist in the ``pip._vendor`` namespace, and the versions
-(fetched from PyPI) that we use are located in ``vendor.txt``. If you wish
-to debundle these you can do so by either deleting everything in
-``pip/_vendor`` **except** for ``pip/_vendor/__init__.py`` or by running
-``PIP_NO_VENDOR_FOR_DOWNSTREAM=1 setup.py install``. No other changes should
-be required as the ``pip/_vendor/__init__.py`` file will alias the "real"
-names (such as ``import six``) to the bundled names (such as
-``import pip._vendor.six``) automatically. Alternatively if you delete the
-entire ``pip._vendor`` you will need to adjust imports that import from those
-locations.

vendor/pip-pop/pip/_vendor/__init__.py

-"""
-pip._vendor is for vendoring dependencies of pip to prevent needing pip to
-depend on something external.
-
-Files inside of pip._vendor should be considered immutable and should only be
-updated to versions from upstream.
-"""
-from __future__ import absolute_import
-
-import glob
-import os.path
-import sys
-
-# Downstream redistributors which have debundled our dependencies should also
-# patch this value to be true. This will trigger the additional patching
-# to cause things like "six" to be available as pip.
-DEBUNDLED = False
-
-# By default, look in this directory for a bunch of .whl files which we will
-# add to the beginning of sys.path before attempting to import anything. This
-# is done to support downstream re-distributors like Debian and Fedora who
-# wish to create their own Wheels for our dependencies to aid in debundling.
-WHEEL_DIR = os.path.abspath(os.path.dirname(__file__))
-
-
-# Define a small helper function to alias our vendored modules to the real ones
-# if the vendored ones do not exist. This idea of this was taken from
-# https://github.com/kennethreitz/requests/pull/2567.
-def vendored(modulename):
-    vendored_name = "{0}.{1}".format(__name__, modulename)
-
-    try:
-        __import__(vendored_name, globals(), locals(), level=0)
-    except ImportError:
-        __import__(modulename, globals(), locals(), level=0)
-        sys.modules[vendored_name] = sys.modules[modulename]
-        base, head = vendored_name.rsplit(".", 1)
-        setattr(sys.modules[base], head, sys.modules[modulename])
-
-
-# If we're operating in a debundled setup, then we want to go ahead and trigger
-# the aliasing of our vendored libraries as well as looking for wheels to add
-# to our sys.path. This will cause all of this code to be a no-op typically
-# however downstream redistributors can enable it in a consistent way across
-# all platforms.
-if DEBUNDLED:
-    # Actually look inside of WHEEL_DIR to find .whl files and add them to the
-    # front of our sys.path.
-    sys.path[:] = glob.glob(os.path.join(WHEEL_DIR, "*.whl")) + sys.path
-
-    # Actually alias all of our vendored dependencies.
-    vendored("cachecontrol")
-    vendored("colorama")
-    vendored("distlib")
-    vendored("html5lib")
-    vendored("lockfile")
-    vendored("six")
-    vendored("six.moves")
-    vendored("six.moves.urllib")
-    vendored("packaging")
-    vendored("packaging.version")
-    vendored("packaging.specifiers")
-    vendored("pkg_resources")
-    vendored("progress")
-    vendored("retrying")
-    vendored("requests")

vendor/pip-pop/pip/_vendor/_markerlib/__init__.py

-try:
-    import ast
-    from pip._vendor._markerlib.markers import default_environment, compile, interpret
-except ImportError:
-    if 'ast' in globals():
-        raise
-    def default_environment():
-        return {}
-    def compile(marker):
-        def marker_fn(environment=None, override=None):
-            # 'empty markers are True' heuristic won't install extra deps.
-            return not marker.strip()
-        marker_fn.__doc__ = marker
-        return marker_fn
-    def interpret(marker, environment=None, override=None):
-        return compile(marker)()

vendor/pip-pop/pip/_vendor/_markerlib/markers.py

-# -*- coding: utf-8 -*-
-"""Interpret PEP 345 environment markers.
-
-EXPR [in|==|!=|not in] EXPR [or|and] ...
-
-where EXPR belongs to any of those:
-
-    python_version = '%s.%s' % (sys.version_info[0], sys.version_info[1])
-    python_full_version = sys.version.split()[0]
-    os.name = os.name
-    sys.platform = sys.platform
-    platform.version = platform.version()
-    platform.machine = platform.machine()
-    platform.python_implementation = platform.python_implementation()
-    a free string, like '2.6', or 'win32'
-"""
-
-__all__ = ['default_environment', 'compile', 'interpret']
-
-import ast
-import os
-import platform
-import sys
-import weakref
-
-_builtin_compile = compile
-
-try:
-    from platform import python_implementation
-except ImportError:
-    if os.name == "java":
-        # Jython 2.5 has ast module, but not platform.python_implementation() function.
-        def python_implementation():
-            return "Jython"
-    else:
-        raise
-
-
-# restricted set of variables
-_VARS = {'sys.platform': sys.platform,
-         'python_version': '%s.%s' % sys.version_info[:2],
-         # FIXME parsing sys.platform is not reliable, but there is no other
-         # way to get e.g. 2.7.2+, and the PEP is defined with sys.version
-         'python_full_version': sys.version.split(' ', 1)[0],
-         'os.name': os.name,
-         'platform.version': platform.version(),
-         'platform.machine': platform.machine(),
-         'platform.python_implementation': python_implementation(),
-         'extra': None # wheel extension
-        }
-
-for var in list(_VARS.keys()):
-    if '.' in var:
-        _VARS[var.replace('.', '_')] = _VARS[var]
-
-def default_environment():
-    """Return copy of default PEP 385 globals dictionary."""
-    return dict(_VARS)
-
-class ASTWhitelist(ast.NodeTransformer):
-    def __init__(self, statement):
-        self.statement = statement # for error messages
-
-    ALLOWED = (ast.Compare, ast.BoolOp, ast.Attribute, ast.Name, ast.Load, ast.Str)
-    # Bool operations
-    ALLOWED += (ast.And, ast.Or)
-    # Comparison operations
-    ALLOWED += (ast.Eq, ast.Gt, ast.GtE, ast.In, ast.Is, ast.IsNot, ast.Lt, ast.LtE, ast.NotEq, ast.NotIn)
-
-    def visit(self, node):
-        """Ensure statement only contains allowed nodes."""
-        if not isinstance(node, self.ALLOWED):
-            raise SyntaxError('Not allowed in environment markers.\n%s\n%s' %
-                               (self.statement,
-                               (' ' * node.col_offset) + '^'))
-        return ast.NodeTransformer.visit(self, node)
-
-    def visit_Attribute(self, node):
-        """Flatten one level of attribute access."""
-        new_node = ast.Name("%s.%s" % (node.value.id, node.attr), node.ctx)
-        return ast.copy_location(new_node, node)
-
-def parse_marker(marker):
-    tree = ast.parse(marker, mode='eval')
-    new_tree = ASTWhitelist(marker).generic_visit(tree)
-    return new_tree
-
-def compile_marker(parsed_marker):
-    return _builtin_compile(parsed_marker, '<environment marker>', 'eval',
-                   dont_inherit=True)
-
-_cache = weakref.WeakValueDictionary()
-
-def compile(marker):
-    """Return compiled marker as a function accepting an environment dict."""
-    try:
-        return _cache[marker]
-    except KeyError:
-        pass
-    if not marker.strip():
-        def marker_fn(environment=None, override=None):
-            """"""
-            return True
-    else:
-        compiled_marker = compile_marker(parse_marker(marker))
-        def marker_fn(environment=None, override=None):
-            """override updates environment"""
-            if override is None:
-                override = {}
-            if environment is None:
-                environment = default_environment()
-            environment.update(override)
-            return eval(compiled_marker, environment)
-    marker_fn.__doc__ = marker
-    _cache[marker] = marker_fn
-    return _cache[marker]
-
-def interpret(marker, environment=None):
-    return compile(marker)(environment)

vendor/pip-pop/pip/_vendor/cachecontrol/__init__.py

-"""CacheControl import Interface.
-
-Make it easy to import from cachecontrol without long namespaces.
-"""
-__author__ = 'Eric Larson'
-__email__ = 'eric@ionrock.org'
-__version__ = '0.11.5'
-
-from .wrapper import CacheControl
-from .adapter import CacheControlAdapter
-from .controller import CacheController

vendor/pip-pop/pip/_vendor/cachecontrol/adapter.py

-import functools
-
-from pip._vendor.requests.adapters import HTTPAdapter
-
-from .controller import CacheController
-from .cache import DictCache
-from .filewrapper import CallbackFileWrapper
-
-
-class CacheControlAdapter(HTTPAdapter):
-    invalidating_methods = set(['PUT', 'DELETE'])
-
-    def __init__(self, cache=None,
-                 cache_etags=True,
-                 controller_class=None,
-                 serializer=None,
-                 heuristic=None,
-                 *args, **kw):
-        super(CacheControlAdapter, self).__init__(*args, **kw)
-        self.cache = cache or DictCache()
-        self.heuristic = heuristic
-
-        controller_factory = controller_class or CacheController
-        self.controller = controller_factory(
-            self.cache,
-            cache_etags=cache_etags,
-            serializer=serializer,
-        )
-
-    def send(self, request, **kw):
-        """
-        Send a request. Use the request information to see if it
-        exists in the cache and cache the response if we need to and can.
-        """
-        if request.method == 'GET':
-            cached_response = self.controller.cached_request(request)
-            if cached_response:
-                return self.build_response(request, cached_response,
-                                           from_cache=True)
-
-            # check for etags and add headers if appropriate
-            request.headers.update(
-                self.controller.conditional_headers(request)
-            )
-
-        resp = super(CacheControlAdapter, self).send(request, **kw)
-
-        return resp
-
-    def build_response(self, request, response, from_cache=False):
-        """
-        Build a response by making a request or using the cache.
-
-        This will end up calling send and returning a potentially
-        cached response
-        """
-        if not from_cache and request.method == 'GET':
-
-            # apply any expiration heuristics
-            if response.status == 304:
-                # We must have sent an ETag request. This could mean
-                # that we've been expired already or that we simply
-                # have an etag. In either case, we want to try and
-                # update the cache if that is the case.
-                cached_response = self.controller.update_cached_response(
-                    request, response
-                )
-
-                if cached_response is not response:
-                    from_cache = True
-
-                # We are done with the server response, read a
-                # possible response body (compliant servers will
-                # not return one, but we cannot be 100% sure) and
-                # release the connection back to the pool.
-                response.read(decode_content=False)
-                response.release_conn()
-
-                response = cached_response
-
-            # We always cache the 301 responses
-            elif response.status == 301:
-                self.controller.cache_response(request, response)
-            else:
-                # Check for any heuristics that might update headers
-                # before trying to cache.
-                if self.heuristic:
-                    response = self.heuristic.apply(response)
-
-                # Wrap the response file with a wrapper that will cache the
-                #   response when the stream has been consumed.
-                response._fp = CallbackFileWrapper(
-                    response._fp,
-                    functools.partial(
-                        self.controller.cache_response,
-                        request,
-                        response,
-                    )
-                )
-
-        resp = super(CacheControlAdapter, self).build_response(
-            request, response
-        )
-
-        # See if we should invalidate the cache.
-        if request.method in self.invalidating_methods and resp.ok:
-            cache_url = self.controller.cache_url(request.url)
-            self.cache.delete(cache_url)
-
-        # Give the request a from_cache attr to let people use it
-        resp.from_cache = from_cache
-
-        return resp
-
-    def close(self):
-        self.cache.close()
-        super(CacheControlAdapter, self).close()

vendor/pip-pop/pip/_vendor/cachecontrol/cache.py

-"""
-The cache object API for implementing caches. The default is a thread
-safe in-memory dictionary.
-"""
-from threading import Lock
-
-
-class BaseCache(object):
-
-    def get(self, key):
-        raise NotImplemented()
-
-    def set(self, key, value):
-        raise NotImplemented()
-
-    def delete(self, key):
-        raise NotImplemented()
-
-    def close(self):
-        pass
-
-
-class DictCache(BaseCache):
-
-    def __init__(self, init_dict=None):
-        self.lock = Lock()
-        self.data = init_dict or {}
-
-    def get(self, key):
-        return self.data.get(key, None)
-
-    def set(self, key, value):
-        with self.lock:
-            self.data.update({key: value})
-
-    def delete(self, key):
-        with self.lock:
-            if key in self.data:
-                self.data.pop(key)

vendor/pip-pop/pip/_vendor/cachecontrol/caches/__init__.py

-from textwrap import dedent
-
-try:
-    from .file_cache import FileCache
-except ImportError:
-    notice = dedent('''
-    NOTE: In order to use the FileCache you must have
-    lockfile installed. You can install it via pip:
-      pip install lockfile
-    ''')
-    print(notice)
-
-
-try:
-    import redis
-    from .redis_cache import RedisCache
-except ImportError:
-    pass

vendor/pip-pop/pip/_vendor/cachecontrol/caches/file_cache.py

-import hashlib
-import os
-
-from pip._vendor.lockfile import LockFile
-from pip._vendor.lockfile.mkdirlockfile import MkdirLockFile
-
-from ..cache import BaseCache
-from ..controller import CacheController
-
-
-def _secure_open_write(filename, fmode):
-    # We only want to write to this file, so open it in write only mode
-    flags = os.O_WRONLY
-
-    # os.O_CREAT | os.O_EXCL will fail if the file already exists, so we only
-    #  will open *new* files.
-    # We specify this because we want to ensure that the mode we pass is the
-    # mode of the file.
-    flags |= os.O_CREAT | os.O_EXCL
-
-    # Do not follow symlinks to prevent someone from making a symlink that
-    # we follow and insecurely open a cache file.
-    if hasattr(os, "O_NOFOLLOW"):
-        flags |= os.O_NOFOLLOW
-
-    # On Windows we'll mark this file as binary
-    if hasattr(os, "O_BINARY"):
-        flags |= os.O_BINARY
-
-    # Before we open our file, we want to delete any existing file that is
-    # there
-    try:
-        os.remove(filename)
-    except (IOError, OSError):
-        # The file must not exist already, so we can just skip ahead to opening
-        pass
-
-    # Open our file, the use of os.O_CREAT | os.O_EXCL will ensure that if a
-    # race condition happens between the os.remove and this line, that an
-    # error will be raised. Because we utilize a lockfile this should only
-    # happen if someone is attempting to attack us.
-    fd = os.open(filename, flags, fmode)
-    try:
-        return os.fdopen(fd, "wb")
-    except:
-        # An error occurred wrapping our FD in a file object
-        os.close(fd)
-        raise
-
-
-class FileCache(BaseCache):
-    def __init__(self, directory, forever=False, filemode=0o0600,
-                 dirmode=0o0700, use_dir_lock=None, lock_class=None):
-
-        if use_dir_lock is not None and lock_class is not None:
-            raise ValueError("Cannot use use_dir_lock and lock_class together")
-
-        if use_dir_lock:
-            lock_class = MkdirLockFile
-
-        if lock_class is None:
-            lock_class = LockFile
-
-        self.directory = directory
-        self.forever = forever
-        self.filemode = filemode
-        self.dirmode = dirmode
-        self.lock_class = lock_class
-
-
-    @staticmethod
-    def encode(x):
-        return hashlib.sha224(x.encode()).hexdigest()
-
-    def _fn(self, name):
-        # NOTE: This method should not change as some may depend on it.
-        #       See: https://github.com/ionrock/cachecontrol/issues/63
-        hashed = self.encode(name)
-        parts = list(hashed[:5]) + [hashed]
-        return os.path.join(self.directory, *parts)
-
-    def get(self, key):
-        name = self._fn(key)
-        if not os.path.exists(name):
-            return None
-
-        with open(name, 'rb') as fh:
-            return fh.read()
-
-    def set(self, key, value):
-        name = self._fn(key)
-
-        # Make sure the directory exists
-        try:
-            os.makedirs(os.path.dirname(name), self.dirmode)
-        except (IOError, OSError):
-            pass
-
-        with self.lock_class(name) as lock:
-            # Write our actual file
-            with _secure_open_write(lock.path, self.filemode) as fh:
-                fh.write(value)
-
-    def delete(self, key):
-        name = self._fn(key)
-        if not self.forever:
-            os.remove(name)
-
-
-def url_to_file_path(url, filecache):
-    """Return the file cache path based on the URL.
-
-    This does not ensure the file exists!
-    """
-    key = CacheController.cache_url(url)
-    return filecache._fn(key)

vendor/pip-pop/pip/_vendor/cachecontrol/caches/redis_cache.py

-from __future__ import division
-
-from datetime import datetime
-
-
-def total_seconds(td):
-    """Python 2.6 compatability"""
-    if hasattr(td, 'total_seconds'):
-        return td.total_seconds()
-
-    ms = td.microseconds
-    secs = (td.seconds + td.days * 24 * 3600)
-    return (ms + secs * 10**6) / 10**6
-
-
-class RedisCache(object):
-
-    def __init__(self, conn):
-        self.conn = conn
-
-    def get(self, key):
-        return self.conn.get(key)
-
-    def set(self, key, value, expires=None):
-        if not expires:
-            self.conn.set(key, value)
-        else:
-            expires = expires - datetime.now()
-            self.conn.setex(key, total_seconds(expires), value)
-
-    def delete(self, key):
-        self.conn.delete(key)
-
-    def clear(self):
-        """Helper for clearing all the keys in a database. Use with
-        caution!"""
-        for key in self.conn.keys():
-            self.conn.delete(key)
-
-    def close(self):
-        self.conn.disconnect()

vendor/pip-pop/pip/_vendor/cachecontrol/compat.py

-try:
-    from urllib.parse import urljoin
-except ImportError:
-    from urlparse import urljoin
-
-
-try:
-    import cPickle as pickle
-except ImportError:
-    import pickle
-
-
-from pip._vendor.requests.packages.urllib3.response import HTTPResponse
-from pip._vendor.requests.packages.urllib3.util import is_fp_closed

vendor/pip-pop/pip/_vendor/cachecontrol/filewrapper.py

-from io import BytesIO
-
-
-class CallbackFileWrapper(object):
-    """
-    Small wrapper around a fp object which will tee everything read into a
-    buffer, and when that file is closed it will execute a callback with the
-    contents of that buffer.
-
-    All attributes are proxied to the underlying file object.
-
-    This class uses members with a double underscore (__) leading prefix so as
-    not to accidentally shadow an attribute.
-    """
-
-    def __init__(self, fp, callback):
-        self.__buf = BytesIO()
-        self.__fp = fp
-        self.__callback = callback
-
-    def __getattr__(self, name):
-        # The vaguaries of garbage collection means that self.__fp is
-        # not always set.  By using __getattribute__ and the private
-        # name[0] allows looking up the attribute value and raising an
-        # AttributeError when it doesn't exist. This stop thigns from
-        # infinitely recursing calls to getattr in the case where
-        # self.__fp hasn't been set.
-        #
-        # [0] https://docs.python.org/2/reference/expressions.html#atom-identifiers
-        fp = self.__getattribute__('_CallbackFileWrapper__fp')
-        return getattr(fp, name)
-
-    def __is_fp_closed(self):
-        try:
-            return self.__fp.fp is None
-        except AttributeError:
-            pass
-
-        try:
-            return self.__fp.closed
-        except AttributeError:
-            pass
-
-        # We just don't cache it then.
-        # TODO: Add some logging here...
-        return False
-
-    def read(self, amt=None):
-        data = self.__fp.read(amt)
-        self.__buf.write(data)
-
-        if self.__is_fp_closed():
-            if self.__callback:
-                self.__callback(self.__buf.getvalue())
-
-            # We assign this to None here, because otherwise we can get into
-            # really tricky problems where the CPython interpreter dead locks
-            # because the callback is holding a reference to something which
-            # has a __del__ method. Setting this to None breaks the cycle
-            # and allows the garbage collector to do it's thing normally.
-            self.__callback = None
-
-        return data

vendor/pip-pop/pip/_vendor/cachecontrol/heuristics.py

-import calendar
-import time
-
-from email.utils import formatdate, parsedate, parsedate_tz
-
-from datetime import datetime, timedelta
-
-TIME_FMT = "%a, %d %b %Y %H:%M:%S GMT"
-
-
-def expire_after(delta, date=None):
-    date = date or datetime.now()
-    return date + delta
-
-
-def datetime_to_header(dt):
-    return formatdate(calendar.timegm(dt.timetuple()))
-
-
-class BaseHeuristic(object):
-
-    def warning(self, response):
-        """
-        Return a valid 1xx warning header value describing the cache
-        adjustments.
-
-        The response is provided too allow warnings like 113
-        http://tools.ietf.org/html/rfc7234#section-5.5.4 where we need
-        to explicitly say response is over 24 hours old.
-        """
-        return '110 - "Response is Stale"'
-
-    def update_headers(self, response):
-        """Update the response headers with any new headers.
-
-        NOTE: This SHOULD always include some Warning header to
-              signify that the response was cached by the client, not
-              by way of the provided headers.
-        """
-        return {}
-
-    def apply(self, response):
-        warning_header_value = self.warning(response)
-        response.headers.update(self.update_headers(response))
-        if warning_header_value is not None:
-            response.headers.update({'Warning': warning_header_value})
-        return response
-
-
-class OneDayCache(BaseHeuristic):
-    """
-    Cache the response by providing an expires 1 day in the
-    future.
-    """
-    def update_headers(self, response):
-        headers = {}
-
-        if 'expires' not in response.headers:
-            date = parsedate(response.headers['date'])
-            expires = expire_after(timedelta(days=1),
-                                   date=datetime(*date[:6]))
-            headers['expires'] = datetime_to_header(expires)
-            headers['cache-control'] = 'public'
-        return headers
-
-
-class ExpiresAfter(BaseHeuristic):
-    """
-    Cache **all** requests for a defined time period.
-    """
-
-    def __init__(self, **kw):
-        self.delta = timedelta(**kw)
-
-    def update_headers(self, response):
-        expires = expire_after(self.delta)
-        return {
-            'expires': datetime_to_header(expires),
-            'cache-control': 'public',
-        }
-
-    def warning(self, response):
-        tmpl = '110 - Automatically cached for %s. Response might be stale'
-        return tmpl % self.delta
-
-
-class LastModified(BaseHeuristic):
-    """
-    If there is no Expires header already, fall back on Last-Modified
-    using the heuristic from
-    http://tools.ietf.org/html/rfc7234#section-4.2.2
-    to calculate a reasonable value.
-
-    Firefox also does something like this per
-    https://developer.mozilla.org/en-US/docs/Web/HTTP/Caching_FAQ
-    http://lxr.mozilla.org/mozilla-release/source/netwerk/protocol/http/nsHttpResponseHead.cpp#397
-    Unlike mozilla we limit this to 24-hr.
-    """
-    cacheable_by_default_statuses = set([
-        200, 203, 204, 206, 300, 301, 404, 405, 410, 414, 501
-    ])
-
-    def update_headers(self, resp):
-        headers = resp.headers
-
-        if 'expires' in headers:
-            return {}
-
-        if 'cache-control' in headers and headers['cache-control'] != 'public':
-            return {}
-
-        if resp.status not in self.cacheable_by_default_statuses:
-            return {}
-
-        if 'date' not in headers or 'last-modified' not in headers:
-            return {}
-
-        date = calendar.timegm(parsedate_tz(headers['date']))
-        last_modified = parsedate(headers['last-modified'])
-        if date is None or last_modified is None:
-            return {}
-
-        now = time.time()
-        current_age = max(0, now - date)
-        delta = date - calendar.timegm(last_modified)
-        freshness_lifetime = max(0, min(delta / 10, 24 * 3600))
-        if freshness_lifetime <= current_age:
-            return {}
-
-        expires = date + freshness_lifetime
-        return {'expires': time.strftime(TIME_FMT, time.gmtime(expires))}
-
-    def warning(self, resp):
-        return None

vendor/pip-pop/pip/_vendor/cachecontrol/serialize.py

-import base64
-import io
-import json
-import zlib
-
-from pip._vendor.requests.structures import CaseInsensitiveDict
-
-from .compat import HTTPResponse, pickle
-
-
-def _b64_encode_bytes(b):
-    return base64.b64encode(b).decode("ascii")
-
-
-def _b64_encode_str(s):
-    return _b64_encode_bytes(s.encode("utf8"))
-
-
-def _b64_decode_bytes(b):
-    return base64.b64decode(b.encode("ascii"))
-
-
-def _b64_decode_str(s):
-    return _b64_decode_bytes(s).decode("utf8")
-
-
-class Serializer(object):
-
-    def dumps(self, request, response, body=None):
-        response_headers = CaseInsensitiveDict(response.headers)
-
-        if body is None:
-            body = response.read(decode_content=False)
-
-            # NOTE: 99% sure this is dead code. I'm only leaving it
-            #       here b/c I don't have a test yet to prove
-            #       it. Basically, before using
-            #       `cachecontrol.filewrapper.CallbackFileWrapper`,
-            #       this made an effort to reset the file handle. The
-            #       `CallbackFileWrapper` short circuits this code by
-            #       setting the body as the content is consumed, the
-            #       result being a `body` argument is *always* passed
-            #       into cache_response, and in turn,
-            #       `Serializer.dump`.
-            response._fp = io.BytesIO(body)
-
-        data = {
-            "response": {
-                "body": _b64_encode_bytes(body),
-                "headers": dict(
-                    (_b64_encode_str(k), _b64_encode_str(v))
-                    for k, v in response.headers.items()
-                ),
-                "status": response.status,
-                "version": response.version,
-                "reason": _b64_encode_str(response.reason),
-                "strict": response.strict,
-                "decode_content": response.decode_content,
-            },
-        }
-
-        # Construct our vary headers
-        data["vary"] = {}
-        if "vary" in response_headers:
-            varied_headers = response_headers['vary'].split(',')
-            for header in varied_headers:
-                header = header.strip()
-                data["vary"][header] = request.headers.get(header, None)
-
-        # Encode our Vary headers to ensure they can be serialized as JSON
-        data["vary"] = dict(
-            (_b64_encode_str(k), _b64_encode_str(v) if v is not None else v)
-            for k, v in data["vary"].items()
-        )
-
-        return b",".join([
-            b"cc=2",
-            zlib.compress(
-                json.dumps(
-                    data, separators=(",", ":"), sort_keys=True,
-                ).encode("utf8"),
-            ),
-        ])
-
-    def loads(self, request, data):
-        # Short circuit if we've been given an empty set of data
-        if not data:
-            return
-
-        # Determine what version of the serializer the data was serialized
-        # with
-        try:
-            ver, data = data.split(b",", 1)
-        except ValueError:
-            ver = b"cc=0"
-
-        # Make sure that our "ver" is actually a version and isn't a false
-        # positive from a , being in the data stream.
-        if ver[:3] != b"cc=":
-            data = ver + data
-            ver = b"cc=0"
-
-        # Get the version number out of the cc=N
-        ver = ver.split(b"=", 1)[-1].decode("ascii")
-
-        # Dispatch to the actual load method for the given version
-        try:
-            return getattr(self, "_loads_v{0}".format(ver))(request, data)
-        except AttributeError:
-            # This is a version we don't have a loads function for, so we'll
-            # just treat it as a miss and return None
-            return
-
-    def prepare_response(self, request, cached):
-        """Verify our vary headers match and construct a real urllib3
-        HTTPResponse object.
-        """
-        # Special case the '*' Vary value as it means we cannot actually
-        # determine if the cached response is suitable for this request.
-        if "*" in cached.get("vary", {}):
-            return
-
-        # Ensure that the Vary headers for the cached response match our
-        # request
-        for header, value in cached.get("vary", {}).items():
-            if request.headers.get(header, None) != value:
-                return
-
-        body_raw = cached["response"].pop("body")
-
-        try:
-            body = io.BytesIO(body_raw)
-        except TypeError:
-            # This can happen if cachecontrol serialized to v1 format (pickle)
-            # using Python 2. A Python 2 str(byte string) will be unpickled as
-            # a Python 3 str (unicode string), which will cause the above to
-            # fail with:
-            #
-            #     TypeError: 'str' does not support the buffer interface
-            body = io.BytesIO(body_raw.encode('utf8'))
-
-        return HTTPResponse(
-            body=body,
-            preload_content=False,
-            **cached["response"]
-        )
-
-    def _loads_v0(self, request, data):
-        # The original legacy cache data. This doesn't contain enough
-        # information to construct everything we need, so we'll treat this as
-        # a miss.
-        return
-
-    def _loads_v1(self, request, data):
-        try:
-            cached = pickle.loads(data)
-        except ValueError:
-            return
-
-        return self.prepare_response(request, cached)
-
-    def _loads_v2(self, request, data):
-        try:
-            cached = json.loads(zlib.decompress(data).decode("utf8"))
-        except ValueError:
-            return
-
-        # We need to decode the items that we've base64 encoded
-        cached["response"]["body"] = _b64_decode_bytes(
-            cached["response"]["body"]
-        )
-        cached["response"]["headers"] = dict(
-            (_b64_decode_str(k), _b64_decode_str(v))
-            for k, v in cached["response"]["headers"].items()
-        )
-        cached["response"]["reason"] = _b64_decode_str(
-            cached["response"]["reason"],
-        )
-        cached["vary"] = dict(
-            (_b64_decode_str(k), _b64_decode_str(v) if v is not None else v)
-            for k, v in cached["vary"].items()
-        )
-
-        return self.prepare_response(request, cached)

vendor/pip-pop/pip/_vendor/cachecontrol/wrapper.py

-from .adapter import CacheControlAdapter
-from .cache import DictCache
-
-
-def CacheControl(sess,
-                 cache=None,
-                 cache_etags=True,
-                 serializer=None,
-                 heuristic=None):
-
-    cache = cache or DictCache()
-    adapter = CacheControlAdapter(
-        cache,
-        cache_etags=cache_etags,
-        serializer=serializer,
-        heuristic=heuristic,
-    )
-    sess.mount('http://', adapter)
-    sess.mount('https://', adapter)
-
-    return sess

vendor/pip-pop/pip/_vendor/colorama/__init__.py

-# Copyright Jonathan Hartley 2013. BSD 3-Clause license, see LICENSE file.
-from .initialise import init, deinit, reinit
-from .ansi import Fore, Back, Style, Cursor
-from .ansitowin32 import AnsiToWin32
-
-__version__ = '0.3.3'
-

vendor/pip-pop/pip/_vendor/colorama/ansi.py

-# Copyright Jonathan Hartley 2013. BSD 3-Clause license, see LICENSE file.
-'''
-This module generates ANSI character codes to printing colors to terminals.
-See: http://en.wikipedia.org/wiki/ANSI_escape_code
-'''
-
-CSI = '\033['
-OSC = '\033]'
-BEL = '\007'
-
-
-def code_to_chars(code):
-    return CSI + str(code) + 'm'
-
-
-class AnsiCodes(object):
-    def __init__(self, codes):
-        for name in dir(codes):
-            if not name.startswith('_'):
-                value = getattr(codes, name)
-                setattr(self, name, code_to_chars(value))
-
-
-class AnsiCursor(object):
-    def UP(self, n=1):
-        return CSI + str(n) + "A"
-    def DOWN(self, n=1):
-        return CSI + str(n) + "B"
-    def FORWARD(self, n=1):
-        return CSI + str(n) + "C"
-    def BACK(self, n=1):
-        return CSI + str(n) + "D"
-    def POS(self, x=1, y=1):
-        return CSI + str(y) + ";" + str(x) + "H"
-
-def set_title(title):
-    return OSC + "2;" + title + BEL
-
-def clear_screen(mode=2):
-    return CSI + str(mode) + "J"
-
-def clear_line(mode=2):
-    return CSI + str(mode) + "K"
-
-
-class AnsiFore:
-    BLACK           = 30
-    RED             = 31
-    GREEN           = 32
-    YELLOW          = 33
-    BLUE            = 34
-    MAGENTA         = 35
-    CYAN            = 36
-    WHITE           = 37
-    RESET           = 39
-
-    # These are fairly well supported, but not part of the standard.
-    LIGHTBLACK_EX   = 90
-    LIGHTRED_EX     = 91
-    LIGHTGREEN_EX   = 92
-    LIGHTYELLOW_EX  = 93
-    LIGHTBLUE_EX    = 94
-    LIGHTMAGENTA_EX = 95
-    LIGHTCYAN_EX    = 96
-    LIGHTWHITE_EX   = 97
-
-
-class AnsiBack:
-    BLACK           = 40
-    RED             = 41
-    GREEN           = 42
-    YELLOW          = 43
-    BLUE            = 44
-    MAGENTA         = 45
-    CYAN            = 46
-    WHITE           = 47
-    RESET           = 49
-
-    # These are fairly well supported, but not part of the standard.
-    LIGHTBLACK_EX   = 100
-    LIGHTRED_EX     = 101
-    LIGHTGREEN_EX   = 102
-    LIGHTYELLOW_EX  = 103
-    LIGHTBLUE_EX    = 104
-    LIGHTMAGENTA_EX = 105
-    LIGHTCYAN_EX    = 106
-    LIGHTWHITE_EX   = 107
-
-
-class AnsiStyle:
-    BRIGHT    = 1
-    DIM       = 2
-    NORMAL    = 22
-    RESET_ALL = 0
-
-Fore = AnsiCodes( AnsiFore )
-Back = AnsiCodes( AnsiBack )
-Style = AnsiCodes( AnsiStyle )
-Cursor = AnsiCursor()

vendor/pip-pop/pip/_vendor/colorama/ansitowin32.py

-# Copyright Jonathan Hartley 2013. BSD 3-Clause license, see LICENSE file.
-import re
-import sys
-import os
-
-from .ansi import AnsiFore, AnsiBack, AnsiStyle, Style
-from .winterm import WinTerm, WinColor, WinStyle
-from .win32 import windll
-
-
-winterm = None
-if windll is not None:
-    winterm = WinTerm()
-
-
-def is_a_tty(stream):
-    return hasattr(stream, 'isatty') and stream.isatty()
-
-
-class StreamWrapper(object):
-    '''
-    Wraps a stream (such as stdout), acting as a transparent proxy for all
-    attribute access apart from method 'write()', which is delegated to our
-    Converter instance.
-    '''
-    def __init__(self, wrapped, converter):
-        # double-underscore everything to prevent clashes with names of
-        # attributes on the wrapped stream object.
-        self.__wrapped = wrapped
-        self.__convertor = converter
-
-    def __getattr__(self, name):
-        return getattr(self.__wrapped, name)
-
-    def write(self, text):
-        self.__convertor.write(text)
-
-
-class AnsiToWin32(object):
-    '''
-    Implements a 'write()' method which, on Windows, will strip ANSI character
-    sequences from the text, and if outputting to a tty, will convert them into
-    win32 function calls.
-    '''
-    ANSI_CSI_RE = re.compile('\033\[((?:\d|;)*)([a-zA-Z])')     # Control Sequence Introducer
-    ANSI_OSC_RE = re.compile('\033\]((?:.|;)*?)(\x07)')         # Operating System Command
-
-    def __init__(self, wrapped, convert=None, strip=None, autoreset=False):
-        # The wrapped stream (normally sys.stdout or sys.stderr)
-        self.wrapped = wrapped
-
-        # should we reset colors to defaults after every .write()
-        self.autoreset = autoreset
-
-        # create the proxy wrapping our output stream
-        self.stream = StreamWrapper(wrapped, self)
-
-        on_windows = os.name == 'nt'
-        on_emulated_windows = on_windows and 'TERM' in os.environ
-
-        # should we strip ANSI sequences from our output?
-        if strip is None:
-            strip = on_windows and not on_emulated_windows
-        self.strip = strip
-
-        # should we should convert ANSI sequences into win32 calls?
-        if convert is None:
-            convert = on_windows and not wrapped.closed and not on_emulated_windows and is_a_tty(wrapped)
-        self.convert = convert
-
-        # dict of ansi codes to win32 functions and parameters
-        self.win32_calls = self.get_win32_calls()
-
-        # are we wrapping stderr?
-        self.on_stderr = self.wrapped is sys.stderr
-
-    def should_wrap(self):
-        '''
-        True if this class is actually needed. If false, then the output
-        stream will not be affected, nor will win32 calls be issued, so
-        wrapping stdout is not actually required. This will generally be
-        False on non-Windows platforms, unless optional functionality like
-        autoreset has been requested using kwargs to init()
-        '''
-        return self.convert or self.strip or self.autoreset
-
-    def get_win32_calls(self):
-        if self.convert and winterm:
-            return {
-                AnsiStyle.RESET_ALL: (winterm.reset_all, ),
-                AnsiStyle.BRIGHT: (winterm.style, WinStyle.BRIGHT),
-                AnsiStyle.DIM: (winterm.style, WinStyle.NORMAL),
-                AnsiStyle.NORMAL: (winterm.style, WinStyle.NORMAL),
-                AnsiFore.BLACK: (winterm.fore, WinColor.BLACK),
-                AnsiFore.RED: (winterm.fore, WinColor.RED),
-                AnsiFore.GREEN: (winterm.fore, WinColor.GREEN),
-                AnsiFore.YELLOW: (winterm.fore, WinColor.YELLOW),
-                AnsiFore.BLUE: (winterm.fore, WinColor.BLUE),
-                AnsiFore.MAGENTA: (winterm.fore, WinColor.MAGENTA),
-                AnsiFore.CYAN: (winterm.fore, WinColor.CYAN),
-                AnsiFore.WHITE: (winterm.fore, WinColor.GREY),
-                AnsiFore.RESET: (winterm.fore, ),
-                AnsiFore.LIGHTBLACK_EX: (winterm.fore, WinColor.BLACK, True),
-                AnsiFore.LIGHTRED_EX: (winterm.fore, WinColor.RED, True),
-                AnsiFore.LIGHTGREEN_EX: (winterm.fore, WinColor.GREEN, True),
-                AnsiFore.LIGHTYELLOW_EX: (winterm.fore, WinColor.YELLOW, True),
-                AnsiFore.LIGHTBLUE_EX: (winterm.fore, WinColor.BLUE, True),
-                AnsiFore.LIGHTMAGENTA_EX: (winterm.fore, WinColor.MAGENTA, True),
-                AnsiFore.LIGHTCYAN_EX: (winterm.fore, WinColor.CYAN, True),
-                AnsiFore.LIGHTWHITE_EX: (winterm.fore, WinColor.GREY, True),
-                AnsiBack.BLACK: (winterm.back, WinColor.BLACK),
-                AnsiBack.RED: (winterm.back, WinColor.RED),
-                AnsiBack.GREEN: (winterm.back, WinColor.GREEN),
-                AnsiBack.YELLOW: (winterm.back, WinColor.YELLOW),
-                AnsiBack.BLUE: (winterm.back, WinColor.BLUE),
-                AnsiBack.MAGENTA: (winterm.back, WinColor.MAGENTA),
-                AnsiBack.CYAN: (winterm.back, WinColor.CYAN),
-                AnsiBack.WHITE: (winterm.back, WinColor.GREY),
-                AnsiBack.RESET: (winterm.back, ),
-                AnsiBack.LIGHTBLACK_EX: (winterm.back, WinColor.BLACK, True),
-                AnsiBack.LIGHTRED_EX: (winterm.back, WinColor.RED, True),
-                AnsiBack.LIGHTGREEN_EX: (winterm.back, WinColor.GREEN, True),
-                AnsiBack.LIGHTYELLOW_EX: (winterm.back, WinColor.YELLOW, True),
-                AnsiBack.LIGHTBLUE_EX: (winterm.back, WinColor.BLUE, True),
-                AnsiBack.LIGHTMAGENTA_EX: (winterm.back, WinColor.MAGENTA, True),
-                AnsiBack.LIGHTCYAN_EX: (winterm.back, WinColor.CYAN, True),
-                AnsiBack.LIGHTWHITE_EX: (winterm.back, WinColor.GREY, True),
-            }
-        return dict()
-
-    def write(self, text):
-        if self.strip or self.convert:
-            self.write_and_convert(text)
-        else:
-            self.wrapped.write(text)
-            self.wrapped.flush()
-        if self.autoreset:
-            self.reset_all()
-
-
-    def reset_all(self):
-        if self.convert:
-            self.call_win32('m', (0,))
-        elif not self.wrapped.closed and is_a_tty(self.wrapped):
-            self.wrapped.write(Style.RESET_ALL)
-
-
-    def write_and_convert(self, text):
-        '''
-        Write the given text to our wrapped stream, stripping any ANSI
-        sequences from the text, and optionally converting them into win32
-        calls.
-        '''
-        cursor = 0
-        text = self.convert_osc(text)
-        for match in self.ANSI_CSI_RE.finditer(text):
-            start, end = match.span()
-            self.write_plain_text(text, cursor, start)
-            self.convert_ansi(*match.groups())
-            cursor = end
-        self.write_plain_text(text, cursor, len(text))
-
-
-    def write_plain_text(self, text, start, end):
-        if start < end:
-            self.wrapped.write(text[start:end])
-            self.wrapped.flush()
-
-
-    def convert_ansi(self, paramstring, command):
-        if self.convert:
-            params = self.extract_params(command, paramstring)
-            self.call_win32(command, params)
-
-
-    def extract_params(self, command, paramstring):
-        if command in 'Hf':
-            params = tuple(int(p) if len(p) != 0 else 1 for p in paramstring.split(';'))
-            while len(params) < 2:
-                # defaults:
-                params = params + (1,)
-        else:
-            params = tuple(int(p) for p in paramstring.split(';') if len(p) != 0)
-            if len(params) == 0:
-                # defaults:
-                if command in 'JKm':
-                    params = (0,)
-                elif command in 'ABCD':
-                    params = (1,)
-
-        return params
-
-
-    def call_win32(self, command, params):
-        if command == 'm':
-            for param in params:
-                if param in self.win32_calls:
-                    func_args = self.win32_calls[param]
-                    func = func_args[0]
-                    args = func_args[1:]
-                    kwargs = dict(on_stderr=self.on_stderr)
-                    func(*args, **kwargs)
-        elif command in 'J':
-            winterm.erase_screen(params[0], on_stderr=self.on_stderr)
-        elif command in 'K':
-            winterm.erase_line(params[0], on_stderr=self.on_stderr)
-        elif command in 'Hf':     # cursor position - absolute
-            winterm.set_cursor_position(params, on_stderr=self.on_stderr)
-        elif command in 'ABCD':   # cursor position - relative
-            n = params[0]
-            # A - up, B - down, C - forward, D - back
-            x, y = {'A': (0, -n), 'B': (0, n), 'C': (n, 0), 'D': (-n, 0)}[command]
-            winterm.cursor_adjust(x, y, on_stderr=self.on_stderr)
-
-
-    def convert_osc(self, text):
-        for match in self.ANSI_OSC_RE.finditer(text):
-            start, end = match.span()
-            text = text[:start] + text[end:]
-            paramstring, command = match.groups()
-            if command in '\x07':       # \x07 = BEL
-                params = paramstring.split(";")
-                # 0 - change title and icon (we will only change title)
-                # 1 - change icon (we don't support this)
-                # 2 - change title
-                if params[0] in '02':
-                    winterm.set_title(params[1])
-        return text

vendor/pip-pop/pip/_vendor/colorama/initialise.py

-# Copyright Jonathan Hartley 2013. BSD 3-Clause license, see LICENSE file.
-import atexit
-import sys
-
-from .ansitowin32 import AnsiToWin32
-
-
-orig_stdout = sys.stdout
-orig_stderr = sys.stderr
-
-wrapped_stdout = sys.stdout
-wrapped_stderr = sys.stderr
-
-atexit_done = False
-
-
-def reset_all():
-    AnsiToWin32(orig_stdout).reset_all()
-
-
-def init(autoreset=False, convert=None, strip=None, wrap=True):
-
-    if not wrap and any([autoreset, convert, strip]):
-        raise ValueError('wrap=False conflicts with any other arg=True')
-
-    global wrapped_stdout, wrapped_stderr
-    if sys.stdout is None:
-        wrapped_stdout = None
-    else:
-        sys.stdout = wrapped_stdout = \
-            wrap_stream(orig_stdout, convert, strip, autoreset, wrap)
-    if sys.stderr is None:
-        wrapped_stderr = None
-    else:
-        sys.stderr = wrapped_stderr = \
-            wrap_stream(orig_stderr, convert, strip, autoreset, wrap)
-
-    global atexit_done
-    if not atexit_done:
-        atexit.register(reset_all)
-        atexit_done = True
-
-
-def deinit():
-    if orig_stdout is not None:
-        sys.stdout = orig_stdout
-    if orig_stderr is not None:
-        sys.stderr = orig_stderr
-
-
-def reinit():
-    if wrapped_stdout is not None:
-        sys.stdout = wrapped_stdout
-    if wrapped_stderr is not None:
-        sys.stderr = wrapped_stderr
-
-
-def wrap_stream(stream, convert, strip, autoreset, wrap):
-    if wrap:
-        wrapper = AnsiToWin32(stream,
-            convert=convert, strip=strip, autoreset=autoreset)
-        if wrapper.should_wrap():
-            stream = wrapper.stream
-    return stream
-
-

vendor/pip-pop/pip/_vendor/colorama/win32.py

-# Copyright Jonathan Hartley 2013. BSD 3-Clause license, see LICENSE file.
-
-# from winbase.h
-STDOUT = -11
-STDERR = -12
-
-try:
-    import ctypes
-    from ctypes import LibraryLoader
-    windll = LibraryLoader(ctypes.WinDLL)
-    from ctypes import wintypes
-except (AttributeError, ImportError):
-    windll = None
-    SetConsoleTextAttribute = lambda *_: None
-else:
-    from ctypes import byref, Structure, c_char, POINTER
-
-    COORD = wintypes._COORD
-
-    class CONSOLE_SCREEN_BUFFER_INFO(Structure):
-        """struct in wincon.h."""
-        _fields_ = [
-            ("dwSize", COORD),
-            ("dwCursorPosition", COORD),
-            ("wAttributes", wintypes.WORD),
-            ("srWindow", wintypes.SMALL_RECT),
-            ("dwMaximumWindowSize", COORD),
-        ]
-        def __str__(self):
-            return '(%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d)' % (
-                self.dwSize.Y, self.dwSize.X
-                , self.dwCursorPosition.Y, self.dwCursorPosition.X
-                , self.wAttributes
-                , self.srWindow.Top, self.srWindow.Left, self.srWindow.Bottom, self.srWindow.Right
-                , self.dwMaximumWindowSize.Y, self.dwMaximumWindowSize.X
-            )
-
-    _GetStdHandle = windll.kernel32.GetStdHandle
-    _GetStdHandle.argtypes = [
-        wintypes.DWORD,
-    ]
-    _GetStdHandle.restype = wintypes.HANDLE
-
-    _GetConsoleScreenBufferInfo = windll.kernel32.GetConsoleScreenBufferInfo
-    _GetConsoleScreenBufferInfo.argtypes = [
-        wintypes.HANDLE,
-        POINTER(CONSOLE_SCREEN_BUFFER_INFO),
-    ]
-    _GetConsoleScreenBufferInfo.restype = wintypes.BOOL
-
-    _SetConsoleTextAttribute = windll.kernel32.SetConsoleTextAttribute
-    _SetConsoleTextAttribute.argtypes = [
-        wintypes.HANDLE,
-        wintypes.WORD,
-    ]
-    _SetConsoleTextAttribute.restype = wintypes.BOOL
-
-    _SetConsoleCursorPosition = windll.kernel32.SetConsoleCursorPosition
-    _SetConsoleCursorPosition.argtypes = [
-        wintypes.HANDLE,
-        COORD,
-    ]
-    _SetConsoleCursorPosition.restype = wintypes.BOOL
-
-    _FillConsoleOutputCharacterA = windll.kernel32.FillConsoleOutputCharacterA
-    _FillConsoleOutputCharacterA.argtypes = [
-        wintypes.HANDLE,
-        c_char,
-        wintypes.DWORD,
-        COORD,
-        POINTER(wintypes.DWORD),
-    ]
-    _FillConsoleOutputCharacterA.restype = wintypes.BOOL
-
-    _FillConsoleOutputAttribute = windll.kernel32.FillConsoleOutputAttribute
-    _FillConsoleOutputAttribute.argtypes = [
-        wintypes.HANDLE,
-        wintypes.WORD,
-        wintypes.DWORD,
-        COORD,
-        POINTER(wintypes.DWORD),
-    ]
-    _FillConsoleOutputAttribute.restype = wintypes.BOOL
-
-    _SetConsoleTitleW = windll.kernel32.SetConsoleTitleA
-    _SetConsoleTitleW.argtypes = [
-        wintypes.LPCSTR
-    ]
-    _SetConsoleTitleW.restype = wintypes.BOOL
-
-    handles = {
-        STDOUT: _GetStdHandle(STDOUT),
-        STDERR: _GetStdHandle(STDERR),
-    }
-
-    def GetConsoleScreenBufferInfo(stream_id=STDOUT):
-        handle = handles[stream_id]
-        csbi = CONSOLE_SCREEN_BUFFER_INFO()
-        success = _GetConsoleScreenBufferInfo(
-            handle, byref(csbi))
-        return csbi
-
-    def SetConsoleTextAttribute(stream_id, attrs):
-        handle = handles[stream_id]
-        return _SetConsoleTextAttribute(handle, attrs)
-
-    def SetConsoleCursorPosition(stream_id, position, adjust=True):
-        position = COORD(*position)
-        # If the position is out of range, do nothing.
-        if position.Y <= 0 or position.X <= 0:
-            return
-        # Adjust for Windows' SetConsoleCursorPosition:
-        #    1. being 0-based, while ANSI is 1-based.
-        #    2. expecting (x,y), while ANSI uses (y,x).
-        adjusted_position = COORD(position.Y - 1, position.X - 1)
-        if adjust:
-            # Adjust for viewport's scroll position
-            sr = GetConsoleScreenBufferInfo(STDOUT).srWindow
-            adjusted_position.Y += sr.Top
-            adjusted_position.X += sr.Left
-        # Resume normal processing
-        handle = handles[stream_id]
-        return _SetConsoleCursorPosition(handle, adjusted_position)
-
-    def FillConsoleOutputCharacter(stream_id, char, length, start):
-        handle = handles[stream_id]
-        char = c_char(char.encode())
-        length = wintypes.DWORD(length)
-        num_written = wintypes.DWORD(0)
-        # Note that this is hard-coded for ANSI (vs wide) bytes.
-        success = _FillConsoleOutputCharacterA(
-            handle, char, length, start, byref(num_written))
-        return num_written.value
-
-    def FillConsoleOutputAttribute(stream_id, attr, length, start):
-        ''' FillConsoleOutputAttribute( hConsole, csbi.wAttributes, dwConSize, coordScreen, &cCharsWritten )'''
-        handle = handles[stream_id]
-        attribute = wintypes.WORD(attr)
-        length = wintypes.DWORD(length)
-        num_written = wintypes.DWORD(0)
-        # Note that this is hard-coded for ANSI (vs wide) bytes.
-        return _FillConsoleOutputAttribute(
-            handle, attribute, length, start, byref(num_written))
-
-    def SetConsoleTitle(title):
-        return _SetConsoleTitleW(title)

vendor/pip-pop/pip/_vendor/colorama/winterm.py

-# Copyright Jonathan Hartley 2013. BSD 3-Clause license, see LICENSE file.
-from . import win32
-
-
-# from wincon.h
-class WinColor(object):
-    BLACK   = 0
-    BLUE    = 1
-    GREEN   = 2
-    CYAN    = 3
-    RED     = 4
-    MAGENTA = 5
-    YELLOW  = 6
-    GREY    = 7
-
-# from wincon.h
-class WinStyle(object):
-    NORMAL              = 0x00 # dim text, dim background
-    BRIGHT              = 0x08 # bright text, dim background
-    BRIGHT_BACKGROUND   = 0x80 # dim text, bright background
-
-class WinTerm(object):
-
-    def __init__(self):
-        self._default = win32.GetConsoleScreenBufferInfo(win32.STDOUT).wAttributes
-        self.set_attrs(self._default)
-        self._default_fore = self._fore
-        self._default_back = self._back
-        self._default_style = self._style
-
-    def get_attrs(self):
-        return self._fore + self._back * 16 + self._style
-
-    def set_attrs(self, value):
-        self._fore = value & 7
-        self._back = (value >> 4) & 7
-        self._style = value & (WinStyle.BRIGHT | WinStyle.BRIGHT_BACKGROUND)
-
-    def reset_all(self, on_stderr=None):
-        self.set_attrs(self._default)
-        self.set_console(attrs=self._default)
-
-    def fore(self, fore=None, light=False, on_stderr=False):
-        if fore is None:
-            fore = self._default_fore
-        self._fore = fore
-        if light:
-            self._style |= WinStyle.BRIGHT
-        self.set_console(on_stderr=on_stderr)
-
-    def back(self, back=None, light=False, on_stderr=False):
-        if back is None:
-            back = self._default_back
-        self._back = back
-        if light:
-            self._style |= WinStyle.BRIGHT_BACKGROUND
-        self.set_console(on_stderr=on_stderr)
-
-    def style(self, style=None, on_stderr=False):
-        if style is None:
-            style = self._default_style
-        self._style = style
-        self.set_console(on_stderr=on_stderr)
-
-    def set_console(self, attrs=None, on_stderr=False):
-        if attrs is None:
-            attrs = self.get_attrs()
-        handle = win32.STDOUT
-        if on_stderr:
-            handle = win32.STDERR
-        win32.SetConsoleTextAttribute(handle, attrs)
-
-    def get_position(self, handle):
-        position = win32.GetConsoleScreenBufferInfo(handle).dwCursorPosition
-        # Because Windows coordinates are 0-based,
-        # and win32.SetConsoleCursorPosition expects 1-based.
-        position.X += 1
-        position.Y += 1
-        return position
-
-    def set_cursor_position(self, position=None, on_stderr=False):
-        if position is None:
-            #I'm not currently tracking the position, so there is no default.
-            #position = self.get_position()
-            return
-        handle = win32.STDOUT
-        if on_stderr:
-            handle = win32.STDERR
-        win32.SetConsoleCursorPosition(handle, position)
-
-    def cursor_adjust(self, x, y, on_stderr=False):
-        handle = win32.STDOUT
-        if on_stderr:
-            handle = win32.STDERR
-        position = self.get_position(handle)
-        adjusted_position = (position.Y + y, position.X + x)
-        win32.SetConsoleCursorPosition(handle, adjusted_position, adjust=False)
-
-    def erase_screen(self, mode=0, on_stderr=False):
-        # 0 should clear from the cursor to the end of the screen.
-        # 1 should clear from the cursor to the beginning of the screen.
-        # 2 should clear the entire screen, and move cursor to (1,1)
-        handle = win32.STDOUT
-        if on_stderr:
-            handle = win32.STDERR
-        csbi = win32.GetConsoleScreenBufferInfo(handle)
-        # get the number of character cells in the current buffer
-        cells_in_screen = csbi.dwSize.X * csbi.dwSize.Y
-        # get number of character cells before current cursor position
-        cells_before_cursor = csbi.dwSize.X * csbi.dwCursorPosition.Y + csbi.dwCursorPosition.X
-        if mode == 0:
-            from_coord = csbi.dwCursorPosition
-            cells_to_erase = cells_in_screen - cells_before_cursor
-        if mode == 1:
-            from_coord = win32.COORD(0, 0)
-            cells_to_erase = cells_before_cursor
-        elif mode == 2:
-            from_coord = win32.COORD(0, 0)
-            cells_to_erase = cells_in_screen
-        # fill the entire screen with blanks
-        win32.FillConsoleOutputCharacter(handle, ' ', cells_to_erase, from_coord)
-        # now set the buffer's attributes accordingly
-        win32.FillConsoleOutputAttribute(handle, self.get_attrs(), cells_to_erase, from_coord)
-        if mode == 2:
-            # put the cursor where needed
-            win32.SetConsoleCursorPosition(handle, (1, 1))
-
-    def erase_line(self, mode=0, on_stderr=False):
-        # 0 should clear from the cursor to the end of the line.
-        # 1 should clear from the cursor to the beginning of the line.
-        # 2 should clear the entire line.
-        handle = win32.STDOUT
-        if on_stderr:
-            handle = win32.STDERR
-        csbi = win32.GetConsoleScreenBufferInfo(handle)
-        if mode == 0:
-            from_coord = csbi.dwCursorPosition
-            cells_to_erase = csbi.dwSize.X - csbi.dwCursorPosition.X
-        if mode == 1:
-            from_coord = win32.COORD(0, csbi.dwCursorPosition.Y)
-            cells_to_erase = csbi.dwCursorPosition.X
-        elif mode == 2:
-            from_coord = win32.COORD(0, csbi.dwCursorPosition.Y)
-            cells_to_erase = csbi.dwSize.X
-        # fill the entire screen with blanks
-        win32.FillConsoleOutputCharacter(handle, ' ', cells_to_erase, from_coord)
-        # now set the buffer's attributes accordingly
-        win32.FillConsoleOutputAttribute(handle, self.get_attrs(), cells_to_erase, from_coord)
-
-    def set_title(self, title):
-        win32.SetConsoleTitle(title)

vendor/pip-pop/pip/_vendor/distlib/__init__.py

-# -*- coding: utf-8 -*-
-#
-# Copyright (C) 2012-2014 Vinay Sajip.
-# Licensed to the Python Software Foundation under a contributor agreement.
-# See LICENSE.txt and CONTRIBUTORS.txt.
-#
-import logging
-
-__version__ = '0.2.1'
-
-class DistlibException(Exception):
-    pass
-
-try:
-    from logging import NullHandler
-except ImportError: # pragma: no cover
-    class NullHandler(logging.Handler):
-        def handle(self, record): pass
-        def emit(self, record): pass
-        def createLock(self): self.lock = None
-
-logger = logging.getLogger(__name__)
-logger.addHandler(NullHandler())

vendor/pip-pop/pip/_vendor/distlib/_backport/__init__.py

-"""Modules copied from Python 3 standard libraries, for internal use only.
-
-Individual classes and functions are found in d2._backport.misc.  Intended
-usage is to always import things missing from 3.1 from that module: the
-built-in/stdlib objects will be used if found.
-"""

vendor/pip-pop/pip/_vendor/distlib/_backport/misc.py

-# -*- coding: utf-8 -*-
-#
-# Copyright (C) 2012 The Python Software Foundation.
-# See LICENSE.txt and CONTRIBUTORS.txt.
-#
-"""Backports for individual classes and functions."""
-
-import os
-import sys
-
-__all__ = ['cache_from_source', 'callable', 'fsencode']
-
-
-try:
-    from imp import cache_from_source
-except ImportError:
-    def cache_from_source(py_file, debug=__debug__):
-        ext = debug and 'c' or 'o'
-        return py_file + ext
-
-
-try:
-    callable = callable
-except NameError:
-    from collections import Callable
-
-    def callable(obj):
-        return isinstance(obj, Callable)
-
-
-try:
-    fsencode = os.fsencode
-except AttributeError:
-    def fsencode(filename):
-        if isinstance(filename, bytes):
-            return filename
-        elif isinstance(filename, str):
-            return filename.encode(sys.getfilesystemencoding())
-        else:
-            raise TypeError("expect bytes or str, not %s" %
-                            type(filename).__name__)

vendor/pip-pop/pip/_vendor/distlib/_backport/sysconfig.cfg

-[posix_prefix]
-# Configuration directories.  Some of these come straight out of the
-# configure script.  They are for implementing the other variables, not to
-# be used directly in [resource_locations].
-confdir = /etc
-datadir = /usr/share
-libdir = /usr/lib
-statedir = /var
-# User resource directory
-local = ~/.local/{distribution.name}
-
-stdlib = {base}/lib/python{py_version_short}
-platstdlib = {platbase}/lib/python{py_version_short}
-purelib = {base}/lib/python{py_version_short}/site-packages
-platlib = {platbase}/lib/python{py_version_short}/site-packages
-include = {base}/include/python{py_version_short}{abiflags}
-platinclude = {platbase}/include/python{py_version_short}{abiflags}
-data = {base}
-
-[posix_home]
-stdlib = {base}/lib/python
-platstdlib = {base}/lib/python
-purelib = {base}/lib/python
-platlib = {base}/lib/python
-include = {base}/include/python
-platinclude = {base}/include/python
-scripts = {base}/bin
-data = {base}
-
-[nt]
-stdlib = {base}/Lib
-platstdlib = {base}/Lib
-purelib = {base}/Lib/site-packages
-platlib = {base}/Lib/site-packages
-include = {base}/Include
-platinclude = {base}/Include
-scripts = {base}/Scripts
-data = {base}
-
-[os2]
-stdlib = {base}/Lib
-platstdlib = {base}/Lib
-purelib = {base}/Lib/site-packages
-platlib = {base}/Lib/site-packages
-include = {base}/Include
-platinclude = {base}/Include
-scripts = {base}/Scripts
-data = {base}
-
-[os2_home]
-stdlib = {userbase}/lib/python{py_version_short}
-platstdlib = {userbase}/lib/python{py_version_short}
-purelib = {userbase}/lib/python{py_version_short}/site-packages
-platlib = {userbase}/lib/python{py_version_short}/site-packages
-include = {userbase}/include/python{py_version_short}
-scripts = {userbase}/bin
-data = {userbase}
-
-[nt_user]
-stdlib = {userbase}/Python{py_version_nodot}
-platstdlib = {userbase}/Python{py_version_nodot}
-purelib = {userbase}/Python{py_version_nodot}/site-packages
-platlib = {userbase}/Python{py_version_nodot}/site-packages
-include = {userbase}/Python{py_version_nodot}/Include
-scripts = {userbase}/Scripts
-data = {userbase}
-
-[posix_user]
-stdlib = {userbase}/lib/python{py_version_short}
-platstdlib = {userbase}/lib/python{py_version_short}
-purelib = {userbase}/lib/python{py_version_short}/site-packages
-platlib = {userbase}/lib/python{py_version_short}/site-packages
-include = {userbase}/include/python{py_version_short}
-scripts = {userbase}/bin
-data = {userbase}
-
-[osx_framework_user]
-stdlib = {userbase}/lib/python
-platstdlib = {userbase}/lib/python
-purelib = {userbase}/lib/python/site-packages
-platlib = {userbase}/lib/python/site-packages
-include = {userbase}/include
-scripts = {userbase}/bin
-data = {userbase}

vendor/pip-pop/pip/_vendor/html5lib/__init__.py

-"""
-HTML parsing library based on the WHATWG "HTML5"
-specification. The parser is designed to be compatible with existing
-HTML found in the wild and implements well-defined error recovery that
-is largely compatible with modern desktop web browsers.
-
-Example usage:
-
-import html5lib
-f = open("my_document.html")
-tree = html5lib.parse(f)
-"""
-
-from __future__ import absolute_import, division, unicode_literals
-
-from .html5parser import HTMLParser, parse, parseFragment
-from .treebuilders import getTreeBuilder
-from .treewalkers import getTreeWalker
-from .serializer import serialize
-
-__all__ = ["HTMLParser", "parse", "parseFragment", "getTreeBuilder",
-           "getTreeWalker", "serialize"]
-__version__ = "1.0b5"

vendor/pip-pop/pip/_vendor/html5lib/filters/_base.py

-from __future__ import absolute_import, division, unicode_literals
-
-
-class Filter(object):
-    def __init__(self, source):
-        self.source = source
-
-    def __iter__(self):
-        return iter(self.source)
-
-    def __getattr__(self, name):
-        return getattr(self.source, name)

vendor/pip-pop/pip/_vendor/html5lib/filters/alphabeticalattributes.py

-from __future__ import absolute_import, division, unicode_literals
-
-from . import _base
-
-try:
-    from collections import OrderedDict
-except ImportError:
-    from ordereddict import OrderedDict
-
-
-class Filter(_base.Filter):
-    def __iter__(self):
-        for token in _base.Filter.__iter__(self):
-            if token["type"] in ("StartTag", "EmptyTag"):
-                attrs = OrderedDict()
-                for name, value in sorted(token["data"].items(),
-                                          key=lambda x: x[0]):
-                    attrs[name] = value
-                token["data"] = attrs
-            yield token

vendor/pip-pop/pip/_vendor/html5lib/filters/sanitizer.py

-from __future__ import absolute_import, division, unicode_literals
-
-from . import _base
-from ..sanitizer import HTMLSanitizerMixin
-
-
-class Filter(_base.Filter, HTMLSanitizerMixin):
-    def __iter__(self):
-        for token in _base.Filter.__iter__(self):
-            token = self.sanitize_token(token)
-            if token:
-                yield token

vendor/pip-pop/pip/_vendor/html5lib/serializer/__init__.py

-from __future__ import absolute_import, division, unicode_literals
-
-from .. import treewalkers
-
-from .htmlserializer import HTMLSerializer
-
-
-def serialize(input, tree="etree", format="html", encoding=None,
-              **serializer_opts):
-    # XXX: Should we cache this?
-    walker = treewalkers.getTreeWalker(tree)
-    if format == "html":
-        s = HTMLSerializer(**serializer_opts)
-    else:
-        raise ValueError("type must be html")
-    return s.render(walker(input), encoding)