764 lines
23 KiB
Python
764 lines
23 KiB
Python
# The following comment should be removed at some point in the future.
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# mypy: strict-optional=False
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import contextlib
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import errno
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import getpass
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import hashlib
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import io
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import logging
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import os
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import posixpath
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import shutil
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import stat
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import sys
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import sysconfig
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import urllib.parse
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from io import StringIO
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from itertools import filterfalse, tee, zip_longest
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from types import TracebackType
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from typing import (
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Any,
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BinaryIO,
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Callable,
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ContextManager,
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Dict,
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Generator,
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Iterable,
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Iterator,
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List,
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Optional,
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TextIO,
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Tuple,
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Type,
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TypeVar,
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cast,
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)
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from pip._vendor.pyproject_hooks import BuildBackendHookCaller
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from pip._vendor.tenacity import retry, stop_after_delay, wait_fixed
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from pip import __version__
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from pip._internal.exceptions import CommandError, ExternallyManagedEnvironment
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from pip._internal.locations import get_major_minor_version
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from pip._internal.utils.compat import WINDOWS
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from pip._internal.utils.virtualenv import running_under_virtualenv
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__all__ = [
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"rmtree",
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"display_path",
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"backup_dir",
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"ask",
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"splitext",
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"format_size",
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"is_installable_dir",
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"normalize_path",
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"renames",
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"get_prog",
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"captured_stdout",
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"ensure_dir",
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"remove_auth_from_url",
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"check_externally_managed",
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"ConfiguredBuildBackendHookCaller",
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]
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logger = logging.getLogger(__name__)
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T = TypeVar("T")
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ExcInfo = Tuple[Type[BaseException], BaseException, TracebackType]
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VersionInfo = Tuple[int, int, int]
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NetlocTuple = Tuple[str, Tuple[Optional[str], Optional[str]]]
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def get_pip_version() -> str:
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pip_pkg_dir = os.path.join(os.path.dirname(__file__), "..", "..")
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pip_pkg_dir = os.path.abspath(pip_pkg_dir)
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return "pip {} from {} (python {})".format(
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__version__,
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pip_pkg_dir,
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get_major_minor_version(),
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)
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def normalize_version_info(py_version_info: Tuple[int, ...]) -> Tuple[int, int, int]:
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"""
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Convert a tuple of ints representing a Python version to one of length
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three.
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:param py_version_info: a tuple of ints representing a Python version,
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or None to specify no version. The tuple can have any length.
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:return: a tuple of length three if `py_version_info` is non-None.
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Otherwise, return `py_version_info` unchanged (i.e. None).
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"""
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if len(py_version_info) < 3:
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py_version_info += (3 - len(py_version_info)) * (0,)
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elif len(py_version_info) > 3:
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py_version_info = py_version_info[:3]
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return cast("VersionInfo", py_version_info)
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def ensure_dir(path: str) -> None:
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"""os.path.makedirs without EEXIST."""
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try:
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os.makedirs(path)
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except OSError as e:
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# Windows can raise spurious ENOTEMPTY errors. See #6426.
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if e.errno != errno.EEXIST and e.errno != errno.ENOTEMPTY:
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raise
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def get_prog() -> str:
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try:
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prog = os.path.basename(sys.argv[0])
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if prog in ("__main__.py", "-c"):
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return f"{sys.executable} -m pip"
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else:
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return prog
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except (AttributeError, TypeError, IndexError):
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pass
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return "pip"
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# Retry every half second for up to 3 seconds
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# Tenacity raises RetryError by default, explicitly raise the original exception
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@retry(reraise=True, stop=stop_after_delay(3), wait=wait_fixed(0.5))
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def rmtree(dir: str, ignore_errors: bool = False) -> None:
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shutil.rmtree(dir, ignore_errors=ignore_errors, onerror=rmtree_errorhandler)
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def rmtree_errorhandler(func: Callable[..., Any], path: str, exc_info: ExcInfo) -> None:
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"""On Windows, the files in .svn are read-only, so when rmtree() tries to
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remove them, an exception is thrown. We catch that here, remove the
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read-only attribute, and hopefully continue without problems."""
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try:
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has_attr_readonly = not (os.stat(path).st_mode & stat.S_IWRITE)
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except OSError:
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# it's equivalent to os.path.exists
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return
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if has_attr_readonly:
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# convert to read/write
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os.chmod(path, stat.S_IWRITE)
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# use the original function to repeat the operation
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func(path)
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return
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else:
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raise
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def display_path(path: str) -> str:
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"""Gives the display value for a given path, making it relative to cwd
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if possible."""
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path = os.path.normcase(os.path.abspath(path))
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if path.startswith(os.getcwd() + os.path.sep):
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path = "." + path[len(os.getcwd()) :]
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return path
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def backup_dir(dir: str, ext: str = ".bak") -> str:
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"""Figure out the name of a directory to back up the given dir to
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(adding .bak, .bak2, etc)"""
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n = 1
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extension = ext
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while os.path.exists(dir + extension):
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n += 1
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extension = ext + str(n)
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return dir + extension
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def ask_path_exists(message: str, options: Iterable[str]) -> str:
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for action in os.environ.get("PIP_EXISTS_ACTION", "").split():
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if action in options:
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return action
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return ask(message, options)
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def _check_no_input(message: str) -> None:
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"""Raise an error if no input is allowed."""
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if os.environ.get("PIP_NO_INPUT"):
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raise Exception(
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f"No input was expected ($PIP_NO_INPUT set); question: {message}"
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)
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def ask(message: str, options: Iterable[str]) -> str:
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"""Ask the message interactively, with the given possible responses"""
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while 1:
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_check_no_input(message)
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response = input(message)
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response = response.strip().lower()
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if response not in options:
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print(
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"Your response ({!r}) was not one of the expected responses: "
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"{}".format(response, ", ".join(options))
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)
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else:
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return response
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def ask_input(message: str) -> str:
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"""Ask for input interactively."""
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_check_no_input(message)
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return input(message)
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def ask_password(message: str) -> str:
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"""Ask for a password interactively."""
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_check_no_input(message)
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return getpass.getpass(message)
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def strtobool(val: str) -> int:
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"""Convert a string representation of truth to true (1) or false (0).
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True values are 'y', 'yes', 't', 'true', 'on', and '1'; false values
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are 'n', 'no', 'f', 'false', 'off', and '0'. Raises ValueError if
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'val' is anything else.
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"""
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val = val.lower()
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if val in ("y", "yes", "t", "true", "on", "1"):
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return 1
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elif val in ("n", "no", "f", "false", "off", "0"):
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return 0
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else:
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raise ValueError(f"invalid truth value {val!r}")
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def format_size(bytes: float) -> str:
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if bytes > 1000 * 1000:
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return "{:.1f} MB".format(bytes / 1000.0 / 1000)
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elif bytes > 10 * 1000:
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return "{} kB".format(int(bytes / 1000))
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elif bytes > 1000:
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return "{:.1f} kB".format(bytes / 1000.0)
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else:
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return "{} bytes".format(int(bytes))
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def tabulate(rows: Iterable[Iterable[Any]]) -> Tuple[List[str], List[int]]:
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"""Return a list of formatted rows and a list of column sizes.
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For example::
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>>> tabulate([['foobar', 2000], [0xdeadbeef]])
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(['foobar 2000', '3735928559'], [10, 4])
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"""
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rows = [tuple(map(str, row)) for row in rows]
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sizes = [max(map(len, col)) for col in zip_longest(*rows, fillvalue="")]
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table = [" ".join(map(str.ljust, row, sizes)).rstrip() for row in rows]
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return table, sizes
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def is_installable_dir(path: str) -> bool:
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"""Is path is a directory containing pyproject.toml or setup.py?
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If pyproject.toml exists, this is a PEP 517 project. Otherwise we look for
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a legacy setuptools layout by identifying setup.py. We don't check for the
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setup.cfg because using it without setup.py is only available for PEP 517
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projects, which are already covered by the pyproject.toml check.
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"""
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if not os.path.isdir(path):
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return False
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if os.path.isfile(os.path.join(path, "pyproject.toml")):
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return True
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if os.path.isfile(os.path.join(path, "setup.py")):
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return True
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return False
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def read_chunks(
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file: BinaryIO, size: int = io.DEFAULT_BUFFER_SIZE
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) -> Generator[bytes, None, None]:
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"""Yield pieces of data from a file-like object until EOF."""
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while True:
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chunk = file.read(size)
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if not chunk:
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break
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yield chunk
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def normalize_path(path: str, resolve_symlinks: bool = True) -> str:
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"""
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Convert a path to its canonical, case-normalized, absolute version.
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"""
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path = os.path.expanduser(path)
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if resolve_symlinks:
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path = os.path.realpath(path)
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else:
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path = os.path.abspath(path)
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return os.path.normcase(path)
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def splitext(path: str) -> Tuple[str, str]:
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"""Like os.path.splitext, but take off .tar too"""
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base, ext = posixpath.splitext(path)
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if base.lower().endswith(".tar"):
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ext = base[-4:] + ext
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base = base[:-4]
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return base, ext
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def renames(old: str, new: str) -> None:
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"""Like os.renames(), but handles renaming across devices."""
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# Implementation borrowed from os.renames().
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head, tail = os.path.split(new)
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if head and tail and not os.path.exists(head):
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os.makedirs(head)
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shutil.move(old, new)
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head, tail = os.path.split(old)
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if head and tail:
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try:
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os.removedirs(head)
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except OSError:
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pass
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def is_local(path: str) -> bool:
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"""
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Return True if this is a path pip is allowed to modify.
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If we're in a virtualenv, sys.prefix points to the virtualenv's
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prefix; only sys.prefix is considered local.
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If we're not in a virtualenv, in general we can modify anything.
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However, if the OS vendor has configured distutils to install
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somewhere other than sys.prefix (which could be a subdirectory of
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sys.prefix, e.g. /usr/local), we consider sys.prefix itself nonlocal
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and the domain of the OS vendor. (In other words, everything _other
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than_ sys.prefix is considered local.)
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Caution: this function assumes the head of path has been normalized
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with normalize_path.
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"""
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path = normalize_path(path)
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# Hard-coded becouse PyPy uses a different sys.prefix on Debian
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prefix = '/usr'
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if running_under_virtualenv():
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return path.startswith(normalize_path(sys.prefix))
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else:
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from pip._internal.locations import get_scheme
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from pip._internal.models.scheme import SCHEME_KEYS
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if path.startswith(prefix):
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scheme = get_scheme("")
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for key in SCHEME_KEYS:
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local_path = getattr(scheme, key)
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if path.startswith(normalize_path(local_path)):
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return True
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return False
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else:
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return True
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def write_output(msg: Any, *args: Any) -> None:
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logger.info(msg, *args)
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class StreamWrapper(StringIO):
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orig_stream: TextIO = None
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@classmethod
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def from_stream(cls, orig_stream: TextIO) -> "StreamWrapper":
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cls.orig_stream = orig_stream
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return cls()
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# compileall.compile_dir() needs stdout.encoding to print to stdout
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# https://github.com/python/mypy/issues/4125
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@property
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def encoding(self): # type: ignore
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return self.orig_stream.encoding
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@contextlib.contextmanager
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def captured_output(stream_name: str) -> Generator[StreamWrapper, None, None]:
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"""Return a context manager used by captured_stdout/stdin/stderr
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that temporarily replaces the sys stream *stream_name* with a StringIO.
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Taken from Lib/support/__init__.py in the CPython repo.
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"""
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orig_stdout = getattr(sys, stream_name)
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setattr(sys, stream_name, StreamWrapper.from_stream(orig_stdout))
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try:
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yield getattr(sys, stream_name)
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finally:
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setattr(sys, stream_name, orig_stdout)
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def captured_stdout() -> ContextManager[StreamWrapper]:
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"""Capture the output of sys.stdout:
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with captured_stdout() as stdout:
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print('hello')
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self.assertEqual(stdout.getvalue(), 'hello\n')
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Taken from Lib/support/__init__.py in the CPython repo.
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"""
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return captured_output("stdout")
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def captured_stderr() -> ContextManager[StreamWrapper]:
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"""
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See captured_stdout().
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"""
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return captured_output("stderr")
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# Simulates an enum
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def enum(*sequential: Any, **named: Any) -> Type[Any]:
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enums = dict(zip(sequential, range(len(sequential))), **named)
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reverse = {value: key for key, value in enums.items()}
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enums["reverse_mapping"] = reverse
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return type("Enum", (), enums)
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def build_netloc(host: str, port: Optional[int]) -> str:
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"""
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Build a netloc from a host-port pair
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"""
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if port is None:
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return host
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if ":" in host:
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# Only wrap host with square brackets when it is IPv6
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host = f"[{host}]"
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return f"{host}:{port}"
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def build_url_from_netloc(netloc: str, scheme: str = "https") -> str:
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"""
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Build a full URL from a netloc.
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"""
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if netloc.count(":") >= 2 and "@" not in netloc and "[" not in netloc:
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# It must be a bare IPv6 address, so wrap it with brackets.
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netloc = f"[{netloc}]"
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return f"{scheme}://{netloc}"
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def parse_netloc(netloc: str) -> Tuple[str, Optional[int]]:
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"""
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Return the host-port pair from a netloc.
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"""
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url = build_url_from_netloc(netloc)
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parsed = urllib.parse.urlparse(url)
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return parsed.hostname, parsed.port
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def split_auth_from_netloc(netloc: str) -> NetlocTuple:
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"""
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Parse out and remove the auth information from a netloc.
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Returns: (netloc, (username, password)).
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"""
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if "@" not in netloc:
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return netloc, (None, None)
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# Split from the right because that's how urllib.parse.urlsplit()
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# behaves if more than one @ is present (which can be checked using
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# the password attribute of urlsplit()'s return value).
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auth, netloc = netloc.rsplit("@", 1)
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pw: Optional[str] = None
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if ":" in auth:
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# Split from the left because that's how urllib.parse.urlsplit()
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# behaves if more than one : is present (which again can be checked
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# using the password attribute of the return value)
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user, pw = auth.split(":", 1)
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else:
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user, pw = auth, None
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user = urllib.parse.unquote(user)
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if pw is not None:
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pw = urllib.parse.unquote(pw)
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return netloc, (user, pw)
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def redact_netloc(netloc: str) -> str:
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"""
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Replace the sensitive data in a netloc with "****", if it exists.
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For example:
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- "user:pass@example.com" returns "user:****@example.com"
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- "accesstoken@example.com" returns "****@example.com"
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"""
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netloc, (user, password) = split_auth_from_netloc(netloc)
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if user is None:
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return netloc
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if password is None:
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user = "****"
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password = ""
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else:
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user = urllib.parse.quote(user)
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password = ":****"
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return "{user}{password}@{netloc}".format(
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user=user, password=password, netloc=netloc
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)
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def _transform_url(
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url: str, transform_netloc: Callable[[str], Tuple[Any, ...]]
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) -> Tuple[str, NetlocTuple]:
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"""Transform and replace netloc in a url.
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transform_netloc is a function taking the netloc and returning a
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tuple. The first element of this tuple is the new netloc. The
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entire tuple is returned.
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Returns a tuple containing the transformed url as item 0 and the
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original tuple returned by transform_netloc as item 1.
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"""
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purl = urllib.parse.urlsplit(url)
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netloc_tuple = transform_netloc(purl.netloc)
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# stripped url
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url_pieces = (purl.scheme, netloc_tuple[0], purl.path, purl.query, purl.fragment)
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surl = urllib.parse.urlunsplit(url_pieces)
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return surl, cast("NetlocTuple", netloc_tuple)
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def _get_netloc(netloc: str) -> NetlocTuple:
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return split_auth_from_netloc(netloc)
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def _redact_netloc(netloc: str) -> Tuple[str]:
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return (redact_netloc(netloc),)
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|
|
def split_auth_netloc_from_url(url: str) -> Tuple[str, str, Tuple[str, str]]:
|
|
"""
|
|
Parse a url into separate netloc, auth, and url with no auth.
|
|
|
|
Returns: (url_without_auth, netloc, (username, password))
|
|
"""
|
|
url_without_auth, (netloc, auth) = _transform_url(url, _get_netloc)
|
|
return url_without_auth, netloc, auth
|
|
|
|
|
|
def remove_auth_from_url(url: str) -> str:
|
|
"""Return a copy of url with 'username:password@' removed."""
|
|
# username/pass params are passed to subversion through flags
|
|
# and are not recognized in the url.
|
|
return _transform_url(url, _get_netloc)[0]
|
|
|
|
|
|
def redact_auth_from_url(url: str) -> str:
|
|
"""Replace the password in a given url with ****."""
|
|
return _transform_url(url, _redact_netloc)[0]
|
|
|
|
|
|
class HiddenText:
|
|
def __init__(self, secret: str, redacted: str) -> None:
|
|
self.secret = secret
|
|
self.redacted = redacted
|
|
|
|
def __repr__(self) -> str:
|
|
return "<HiddenText {!r}>".format(str(self))
|
|
|
|
def __str__(self) -> str:
|
|
return self.redacted
|
|
|
|
# This is useful for testing.
|
|
def __eq__(self, other: Any) -> bool:
|
|
if type(self) != type(other):
|
|
return False
|
|
|
|
# The string being used for redaction doesn't also have to match,
|
|
# just the raw, original string.
|
|
return self.secret == other.secret
|
|
|
|
|
|
def hide_value(value: str) -> HiddenText:
|
|
return HiddenText(value, redacted="****")
|
|
|
|
|
|
def hide_url(url: str) -> HiddenText:
|
|
redacted = redact_auth_from_url(url)
|
|
return HiddenText(url, redacted=redacted)
|
|
|
|
|
|
def protect_pip_from_modification_on_windows(modifying_pip: bool) -> None:
|
|
"""Protection of pip.exe from modification on Windows
|
|
|
|
On Windows, any operation modifying pip should be run as:
|
|
python -m pip ...
|
|
"""
|
|
pip_names = [
|
|
"pip",
|
|
f"pip{sys.version_info.major}",
|
|
f"pip{sys.version_info.major}.{sys.version_info.minor}",
|
|
]
|
|
|
|
# See https://github.com/pypa/pip/issues/1299 for more discussion
|
|
should_show_use_python_msg = (
|
|
modifying_pip and WINDOWS and os.path.basename(sys.argv[0]) in pip_names
|
|
)
|
|
|
|
if should_show_use_python_msg:
|
|
new_command = [sys.executable, "-m", "pip"] + sys.argv[1:]
|
|
raise CommandError(
|
|
"To modify pip, please run the following command:\n{}".format(
|
|
" ".join(new_command)
|
|
)
|
|
)
|
|
|
|
|
|
def check_externally_managed() -> None:
|
|
"""Check whether the current environment is externally managed.
|
|
|
|
If the ``EXTERNALLY-MANAGED`` config file is found, the current environment
|
|
is considered externally managed, and an ExternallyManagedEnvironment is
|
|
raised.
|
|
"""
|
|
if running_under_virtualenv():
|
|
return
|
|
marker = os.path.join(sysconfig.get_path("stdlib"), "EXTERNALLY-MANAGED")
|
|
if not os.path.isfile(marker):
|
|
return
|
|
raise ExternallyManagedEnvironment.from_config(marker)
|
|
|
|
|
|
def is_console_interactive() -> bool:
|
|
"""Is this console interactive?"""
|
|
return sys.stdin is not None and sys.stdin.isatty()
|
|
|
|
|
|
def hash_file(path: str, blocksize: int = 1 << 20) -> Tuple[Any, int]:
|
|
"""Return (hash, length) for path using hashlib.sha256()"""
|
|
|
|
h = hashlib.sha256()
|
|
length = 0
|
|
with open(path, "rb") as f:
|
|
for block in read_chunks(f, size=blocksize):
|
|
length += len(block)
|
|
h.update(block)
|
|
return h, length
|
|
|
|
|
|
def is_wheel_installed() -> bool:
|
|
"""
|
|
Return whether the wheel package is installed.
|
|
"""
|
|
try:
|
|
import wheel # noqa: F401
|
|
except ImportError:
|
|
return False
|
|
|
|
return True
|
|
|
|
|
|
def pairwise(iterable: Iterable[Any]) -> Iterator[Tuple[Any, Any]]:
|
|
"""
|
|
Return paired elements.
|
|
|
|
For example:
|
|
s -> (s0, s1), (s2, s3), (s4, s5), ...
|
|
"""
|
|
iterable = iter(iterable)
|
|
return zip_longest(iterable, iterable)
|
|
|
|
|
|
def partition(
|
|
pred: Callable[[T], bool],
|
|
iterable: Iterable[T],
|
|
) -> Tuple[Iterable[T], Iterable[T]]:
|
|
"""
|
|
Use a predicate to partition entries into false entries and true entries,
|
|
like
|
|
|
|
partition(is_odd, range(10)) --> 0 2 4 6 8 and 1 3 5 7 9
|
|
"""
|
|
t1, t2 = tee(iterable)
|
|
return filterfalse(pred, t1), filter(pred, t2)
|
|
|
|
|
|
class ConfiguredBuildBackendHookCaller(BuildBackendHookCaller):
|
|
def __init__(
|
|
self,
|
|
config_holder: Any,
|
|
source_dir: str,
|
|
build_backend: str,
|
|
backend_path: Optional[str] = None,
|
|
runner: Optional[Callable[..., None]] = None,
|
|
python_executable: Optional[str] = None,
|
|
):
|
|
super().__init__(
|
|
source_dir, build_backend, backend_path, runner, python_executable
|
|
)
|
|
self.config_holder = config_holder
|
|
|
|
def build_wheel(
|
|
self,
|
|
wheel_directory: str,
|
|
config_settings: Optional[Dict[str, str]] = None,
|
|
metadata_directory: Optional[str] = None,
|
|
) -> str:
|
|
cs = self.config_holder.config_settings
|
|
return super().build_wheel(
|
|
wheel_directory, config_settings=cs, metadata_directory=metadata_directory
|
|
)
|
|
|
|
def build_sdist(
|
|
self, sdist_directory: str, config_settings: Optional[Dict[str, str]] = None
|
|
) -> str:
|
|
cs = self.config_holder.config_settings
|
|
return super().build_sdist(sdist_directory, config_settings=cs)
|
|
|
|
def build_editable(
|
|
self,
|
|
wheel_directory: str,
|
|
config_settings: Optional[Dict[str, str]] = None,
|
|
metadata_directory: Optional[str] = None,
|
|
) -> str:
|
|
cs = self.config_holder.config_settings
|
|
return super().build_editable(
|
|
wheel_directory, config_settings=cs, metadata_directory=metadata_directory
|
|
)
|
|
|
|
def get_requires_for_build_wheel(
|
|
self, config_settings: Optional[Dict[str, str]] = None
|
|
) -> List[str]:
|
|
cs = self.config_holder.config_settings
|
|
return super().get_requires_for_build_wheel(config_settings=cs)
|
|
|
|
def get_requires_for_build_sdist(
|
|
self, config_settings: Optional[Dict[str, str]] = None
|
|
) -> List[str]:
|
|
cs = self.config_holder.config_settings
|
|
return super().get_requires_for_build_sdist(config_settings=cs)
|
|
|
|
def get_requires_for_build_editable(
|
|
self, config_settings: Optional[Dict[str, str]] = None
|
|
) -> List[str]:
|
|
cs = self.config_holder.config_settings
|
|
return super().get_requires_for_build_editable(config_settings=cs)
|
|
|
|
def prepare_metadata_for_build_wheel(
|
|
self,
|
|
metadata_directory: str,
|
|
config_settings: Optional[Dict[str, str]] = None,
|
|
_allow_fallback: bool = True,
|
|
) -> str:
|
|
cs = self.config_holder.config_settings
|
|
return super().prepare_metadata_for_build_wheel(
|
|
metadata_directory=metadata_directory,
|
|
config_settings=cs,
|
|
_allow_fallback=_allow_fallback,
|
|
)
|
|
|
|
def prepare_metadata_for_build_editable(
|
|
self,
|
|
metadata_directory: str,
|
|
config_settings: Optional[Dict[str, str]] = None,
|
|
_allow_fallback: bool = True,
|
|
) -> str:
|
|
cs = self.config_holder.config_settings
|
|
return super().prepare_metadata_for_build_editable(
|
|
metadata_directory=metadata_directory,
|
|
config_settings=cs,
|
|
_allow_fallback=_allow_fallback,
|
|
)
|