--- a/env/lib/python3.7/site-packages/click/_winconsole.py	Thu May 14 16:47:39 2020 -0400
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,370 +0,0 @@
-# -*- coding: utf-8 -*-
-# This module is based on the excellent work by Adam Bartoš who
-# provided a lot of what went into the implementation here in
-# the discussion to issue1602 in the Python bug tracker.
-#
-# There are some general differences in regards to how this works
-# compared to the original patches as we do not need to patch
-# the entire interpreter but just work in our little world of
-# echo and prmopt.
-import ctypes
-import io
-import os
-import sys
-import time
-import zlib
-from ctypes import byref
-from ctypes import c_char
-from ctypes import c_char_p
-from ctypes import c_int
-from ctypes import c_ssize_t
-from ctypes import c_ulong
-from ctypes import c_void_p
-from ctypes import POINTER
-from ctypes import py_object
-from ctypes import windll
-from ctypes import WinError
-from ctypes import WINFUNCTYPE
-from ctypes.wintypes import DWORD
-from ctypes.wintypes import HANDLE
-from ctypes.wintypes import LPCWSTR
-from ctypes.wintypes import LPWSTR
-
-import msvcrt
-
-from ._compat import _NonClosingTextIOWrapper
-from ._compat import PY2
-from ._compat import text_type
-
-try:
-    from ctypes import pythonapi
-
-    PyObject_GetBuffer = pythonapi.PyObject_GetBuffer
-    PyBuffer_Release = pythonapi.PyBuffer_Release
-except ImportError:
-    pythonapi = None
-
-
-c_ssize_p = POINTER(c_ssize_t)
-
-kernel32 = windll.kernel32
-GetStdHandle = kernel32.GetStdHandle
-ReadConsoleW = kernel32.ReadConsoleW
-WriteConsoleW = kernel32.WriteConsoleW
-GetConsoleMode = kernel32.GetConsoleMode
-GetLastError = kernel32.GetLastError
-GetCommandLineW = WINFUNCTYPE(LPWSTR)(("GetCommandLineW", windll.kernel32))
-CommandLineToArgvW = WINFUNCTYPE(POINTER(LPWSTR), LPCWSTR, POINTER(c_int))(
-    ("CommandLineToArgvW", windll.shell32)
-)
-LocalFree = WINFUNCTYPE(ctypes.c_void_p, ctypes.c_void_p)(
-    ("LocalFree", windll.kernel32)
-)
-
-
-STDIN_HANDLE = GetStdHandle(-10)
-STDOUT_HANDLE = GetStdHandle(-11)
-STDERR_HANDLE = GetStdHandle(-12)
-
-
-PyBUF_SIMPLE = 0
-PyBUF_WRITABLE = 1
-
-ERROR_SUCCESS = 0
-ERROR_NOT_ENOUGH_MEMORY = 8
-ERROR_OPERATION_ABORTED = 995
-
-STDIN_FILENO = 0
-STDOUT_FILENO = 1
-STDERR_FILENO = 2
-
-EOF = b"\x1a"
-MAX_BYTES_WRITTEN = 32767
-
-
-class Py_buffer(ctypes.Structure):
-    _fields_ = [
-        ("buf", c_void_p),
-        ("obj", py_object),
-        ("len", c_ssize_t),
-        ("itemsize", c_ssize_t),
-        ("readonly", c_int),
-        ("ndim", c_int),
-        ("format", c_char_p),
-        ("shape", c_ssize_p),
-        ("strides", c_ssize_p),
-        ("suboffsets", c_ssize_p),
-        ("internal", c_void_p),
-    ]
-
-    if PY2:
-        _fields_.insert(-1, ("smalltable", c_ssize_t * 2))
-
-
-# On PyPy we cannot get buffers so our ability to operate here is
-# serverly limited.
-if pythonapi is None:
-    get_buffer = None
-else:
-
-    def get_buffer(obj, writable=False):
-        buf = Py_buffer()
-        flags = PyBUF_WRITABLE if writable else PyBUF_SIMPLE
-        PyObject_GetBuffer(py_object(obj), byref(buf), flags)
-        try:
-            buffer_type = c_char * buf.len
-            return buffer_type.from_address(buf.buf)
-        finally:
-            PyBuffer_Release(byref(buf))
-
-
-class _WindowsConsoleRawIOBase(io.RawIOBase):
-    def __init__(self, handle):
-        self.handle = handle
-
-    def isatty(self):
-        io.RawIOBase.isatty(self)
-        return True
-
-
-class _WindowsConsoleReader(_WindowsConsoleRawIOBase):
-    def readable(self):
-        return True
-
-    def readinto(self, b):
-        bytes_to_be_read = len(b)
-        if not bytes_to_be_read:
-            return 0
-        elif bytes_to_be_read % 2:
-            raise ValueError(
-                "cannot read odd number of bytes from UTF-16-LE encoded console"
-            )
-
-        buffer = get_buffer(b, writable=True)
-        code_units_to_be_read = bytes_to_be_read // 2
-        code_units_read = c_ulong()
-
-        rv = ReadConsoleW(
-            HANDLE(self.handle),
-            buffer,
-            code_units_to_be_read,
-            byref(code_units_read),
-            None,
-        )
-        if GetLastError() == ERROR_OPERATION_ABORTED:
-            # wait for KeyboardInterrupt
-            time.sleep(0.1)
-        if not rv:
-            raise OSError("Windows error: {}".format(GetLastError()))
-
-        if buffer[0] == EOF:
-            return 0
-        return 2 * code_units_read.value
-
-
-class _WindowsConsoleWriter(_WindowsConsoleRawIOBase):
-    def writable(self):
-        return True
-
-    @staticmethod
-    def _get_error_message(errno):
-        if errno == ERROR_SUCCESS:
-            return "ERROR_SUCCESS"
-        elif errno == ERROR_NOT_ENOUGH_MEMORY:
-            return "ERROR_NOT_ENOUGH_MEMORY"
-        return "Windows error {}".format(errno)
-
-    def write(self, b):
-        bytes_to_be_written = len(b)
-        buf = get_buffer(b)
-        code_units_to_be_written = min(bytes_to_be_written, MAX_BYTES_WRITTEN) // 2
-        code_units_written = c_ulong()
-
-        WriteConsoleW(
-            HANDLE(self.handle),
-            buf,
-            code_units_to_be_written,
-            byref(code_units_written),
-            None,
-        )
-        bytes_written = 2 * code_units_written.value
-
-        if bytes_written == 0 and bytes_to_be_written > 0:
-            raise OSError(self._get_error_message(GetLastError()))
-        return bytes_written
-
-
-class ConsoleStream(object):
-    def __init__(self, text_stream, byte_stream):
-        self._text_stream = text_stream
-        self.buffer = byte_stream
-
-    @property
-    def name(self):
-        return self.buffer.name
-
-    def write(self, x):
-        if isinstance(x, text_type):
-            return self._text_stream.write(x)
-        try:
-            self.flush()
-        except Exception:
-            pass
-        return self.buffer.write(x)
-
-    def writelines(self, lines):
-        for line in lines:
-            self.write(line)
-
-    def __getattr__(self, name):
-        return getattr(self._text_stream, name)
-
-    def isatty(self):
-        return self.buffer.isatty()
-
-    def __repr__(self):
-        return "<ConsoleStream name={!r} encoding={!r}>".format(
-            self.name, self.encoding
-        )
-
-
-class WindowsChunkedWriter(object):
-    """
-    Wraps a stream (such as stdout), acting as a transparent proxy for all
-    attribute access apart from method 'write()' which we wrap to write in
-    limited chunks due to a Windows limitation on binary console streams.
-    """
-
-    def __init__(self, wrapped):
-        # double-underscore everything to prevent clashes with names of
-        # attributes on the wrapped stream object.
-        self.__wrapped = wrapped
-
-    def __getattr__(self, name):
-        return getattr(self.__wrapped, name)
-
-    def write(self, text):
-        total_to_write = len(text)
-        written = 0
-
-        while written < total_to_write:
-            to_write = min(total_to_write - written, MAX_BYTES_WRITTEN)
-            self.__wrapped.write(text[written : written + to_write])
-            written += to_write
-
-
-_wrapped_std_streams = set()
-
-
-def _wrap_std_stream(name):
-    # Python 2 & Windows 7 and below
-    if (
-        PY2
-        and sys.getwindowsversion()[:2] <= (6, 1)
-        and name not in _wrapped_std_streams
-    ):
-        setattr(sys, name, WindowsChunkedWriter(getattr(sys, name)))
-        _wrapped_std_streams.add(name)
-
-
-def _get_text_stdin(buffer_stream):
-    text_stream = _NonClosingTextIOWrapper(
-        io.BufferedReader(_WindowsConsoleReader(STDIN_HANDLE)),
-        "utf-16-le",
-        "strict",
-        line_buffering=True,
-    )
-    return ConsoleStream(text_stream, buffer_stream)
-
-
-def _get_text_stdout(buffer_stream):
-    text_stream = _NonClosingTextIOWrapper(
-        io.BufferedWriter(_WindowsConsoleWriter(STDOUT_HANDLE)),
-        "utf-16-le",
-        "strict",
-        line_buffering=True,
-    )
-    return ConsoleStream(text_stream, buffer_stream)
-
-
-def _get_text_stderr(buffer_stream):
-    text_stream = _NonClosingTextIOWrapper(
-        io.BufferedWriter(_WindowsConsoleWriter(STDERR_HANDLE)),
-        "utf-16-le",
-        "strict",
-        line_buffering=True,
-    )
-    return ConsoleStream(text_stream, buffer_stream)
-
-
-if PY2:
-
-    def _hash_py_argv():
-        return zlib.crc32("\x00".join(sys.argv[1:]))
-
-    _initial_argv_hash = _hash_py_argv()
-
-    def _get_windows_argv():
-        argc = c_int(0)
-        argv_unicode = CommandLineToArgvW(GetCommandLineW(), byref(argc))
-        if not argv_unicode:
-            raise WinError()
-        try:
-            argv = [argv_unicode[i] for i in range(0, argc.value)]
-        finally:
-            LocalFree(argv_unicode)
-            del argv_unicode
-
-        if not hasattr(sys, "frozen"):
-            argv = argv[1:]
-            while len(argv) > 0:
-                arg = argv[0]
-                if not arg.startswith("-") or arg == "-":
-                    break
-                argv = argv[1:]
-                if arg.startswith(("-c", "-m")):
-                    break
-
-        return argv[1:]
-
-
-_stream_factories = {
-    0: _get_text_stdin,
-    1: _get_text_stdout,
-    2: _get_text_stderr,
-}
-
-
-def _is_console(f):
-    if not hasattr(f, "fileno"):
-        return False
-
-    try:
-        fileno = f.fileno()
-    except OSError:
-        return False
-
-    handle = msvcrt.get_osfhandle(fileno)
-    return bool(GetConsoleMode(handle, byref(DWORD())))
-
-
-def _get_windows_console_stream(f, encoding, errors):
-    if (
-        get_buffer is not None
-        and encoding in ("utf-16-le", None)
-        and errors in ("strict", None)
-        and _is_console(f)
-    ):
-        func = _stream_factories.get(f.fileno())
-        if func is not None:
-            if not PY2:
-                f = getattr(f, "buffer", None)
-                if f is None:
-                    return None
-            else:
-                # If we are on Python 2 we need to set the stream that we
-                # deal with to binary mode as otherwise the exercise if a
-                # bit moot.  The same problems apply as for
-                # get_binary_stdin and friends from _compat.
-                msvcrt.setmode(f.fileno(), os.O_BINARY)
-            return func(f)