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import errno import getpass import hashlib import logging import os import posixpath import shutil import stat import sys import sysconfig import urllib.parse from dataclasses import dataclass from functools import partial from io import StringIO from itertools import filterfalse, tee, zip_longest from pathlib import Path from types import FunctionType, TracebackType from typing import ( Any, BinaryIO, Callable, Dict, Generator, Iterable, Iterator, List, Optional, TextIO, Tuple, Type, TypeVar, Union, cast, ) from pip._vendor.packaging.requirements import Requirement from pip._vendor.pyproject_hooks import BuildBackendHookCaller from pip import __version__ from pip._internal.exceptions import CommandError, ExternallyManagedEnvironment from pip._internal.locations import get_major_minor_version from pip._internal.utils.compat import WINDOWS from pip._internal.utils.retry import retry from pip._internal.utils.virtualenv import running_under_virtualenv __all__ = [ "rmtree", "display_path", "backup_dir", "ask", "splitext", "format_size", "is_installable_dir", "normalize_path", "renames", "get_prog", "ensure_dir", "remove_auth_from_url", "check_externally_managed", "ConfiguredBuildBackendHookCaller", ] logger = logging.getLogger(__name__) T = TypeVar("T") ExcInfo = Tuple[Type[BaseException], BaseException, TracebackType] VersionInfo = Tuple[int, int, int] NetlocTuple = Tuple[str, Tuple[Optional[str], Optional[str]]] OnExc = Callable[[FunctionType, Path, BaseException], Any] OnErr = Callable[[FunctionType, Path, ExcInfo], Any] FILE_CHUNK_SIZE = 1024 * 1024 def get_pip_version() -> str: pip_pkg_dir = os.path.join(os.path.dirname(__file__), "..", "..") pip_pkg_dir = os.path.abspath(pip_pkg_dir) return f"pip {__version__} from {pip_pkg_dir} (python {get_major_minor_version()})" def normalize_version_info(py_version_info: Tuple[int, ...]) -> Tuple[int, int, int]: """ Convert a tuple of ints representing a Python version to one of length three. :param py_version_info: a tuple of ints representing a Python version, or None to specify no version. The tuple can have any length. :return: a tuple of length three if `py_version_info` is non-None. Otherwise, return `py_version_info` unchanged (i.e. None). """ if len(py_version_info) < 3: py_version_info += (3 - len(py_version_info)) * (0,) elif len(py_version_info) > 3: py_version_info = py_version_info[:3] return cast("VersionInfo", py_version_info) def ensure_dir(path: str) -> None: """os.path.makedirs without EEXIST.""" try: os.makedirs(path) except OSError as e: # Windows can raise spurious ENOTEMPTY errors. See #6426. if e.errno != errno.EEXIST and e.errno != errno.ENOTEMPTY: raise def get_prog() -> str: try: prog = os.path.basename(sys.argv[0]) if prog in ("__main__.py", "-c"): return f"{sys.executable} -m pip" else: return prog except (AttributeError, TypeError, IndexError): pass return "pip" # Retry every half second for up to 3 seconds @retry(stop_after_delay=3, wait=0.5) def rmtree( dir: str, ignore_errors: bool = False, onexc: Optional[OnExc] = None ) -> None: if ignore_errors: onexc = _onerror_ignore if onexc is None: onexc = _onerror_reraise handler: OnErr = partial(rmtree_errorhandler, onexc=onexc) if sys.version_info >= (3, 12): # See https://docs.python.org/3.12/whatsnew/3.12.html#shutil. shutil.rmtree(dir, onexc=handler) # type: ignore else: shutil.rmtree(dir, onerror=handler) # type: ignore def _onerror_ignore(*_args: Any) -> None: pass def _onerror_reraise(*_args: Any) -> None: raise # noqa: PLE0704 - Bare exception used to reraise existing exception def rmtree_errorhandler( func: FunctionType, path: Path, exc_info: Union[ExcInfo, BaseException], *, onexc: OnExc = _onerror_reraise, ) -> None: """ `rmtree` error handler to 'force' a file remove (i.e. like `rm -f`). * If a file is readonly then it's write flag is set and operation is retried. * `onerror` is the original callback from `rmtree(... onerror=onerror)` that is chained at the end if the "rm -f" still fails. """ try: st_mode = os.stat(path).st_mode except OSError: # it's equivalent to os.path.exists return if not st_mode & stat.S_IWRITE: # convert to read/write try: os.chmod(path, st_mode | stat.S_IWRITE) except OSError: pass else: # use the original function to repeat the operation try: func(path) return except OSError: pass if not isinstance(exc_info, BaseException): _, exc_info, _ = exc_info onexc(func, path, exc_info) def display_path(path: str) -> str: """Gives the display value for a given path, making it relative to cwd if possible.""" path = os.path.normcase(os.path.abspath(path)) if path.startswith(os.getcwd() + os.path.sep): path = "." + path[len(os.getcwd()) :] return path def backup_dir(dir: str, ext: str = ".bak") -> str: """Figure out the name of a directory to back up the given dir to (adding .bak, .bak2, etc)""" n = 1 extension = ext while os.path.exists(dir + extension): n += 1 extension = ext + str(n) return dir + extension def ask_path_exists(message: str, options: Iterable[str]) -> str: for action in os.environ.get("PIP_EXISTS_ACTION", "").split(): if action in options: return action return ask(message, options) def _check_no_input(message: str) -> None: """Raise an error if no input is allowed.""" if os.environ.get("PIP_NO_INPUT"): raise Exception( f"No input was expected ($PIP_NO_INPUT set); question: {message}" ) def ask(message: str, options: Iterable[str]) -> str: """Ask the message interactively, with the given possible responses""" while 1: _check_no_input(message) response = input(message) response = response.strip().lower() if response not in options: print( "Your response ({!r}) was not one of the expected responses: " "{}".format(response, ", ".join(options)) ) else: return response def ask_input(message: str) -> str: """Ask for input interactively.""" _check_no_input(message) return input(message) def ask_password(message: str) -> str: """Ask for a password interactively.""" _check_no_input(message) return getpass.getpass(message) def strtobool(val: str) -> int: """Convert a string representation of truth to true (1) or false (0). True values are 'y', 'yes', 't', 'true', 'on', and '1'; false values are 'n', 'no', 'f', 'false', 'off', and '0'. Raises ValueError if 'val' is anything else. """ val = val.lower() if val in ("y", "yes", "t", "true", "on", "1"): return 1 elif val in ("n", "no", "f", "false", "off", "0"): return 0 else: raise ValueError(f"invalid truth value {val!r}") def format_size(bytes: float) -> str: if bytes > 1000 * 1000: return f"{bytes / 1000.0 / 1000:.1f} MB" elif bytes > 10 * 1000: return f"{int(bytes / 1000)} kB" elif bytes > 1000: return f"{bytes / 1000.0:.1f} kB" else: return f"{int(bytes)} bytes" def tabulate(rows: Iterable[Iterable[Any]]) -> Tuple[List[str], List[int]]: """Return a list of formatted rows and a list of column sizes. For example:: >>> tabulate([['foobar', 2000], [0xdeadbeef]]) (['foobar 2000', '3735928559'], [10, 4]) """ rows = [tuple(map(str, row)) for row in rows] sizes = [max(map(len, col)) for col in zip_longest(*rows, fillvalue="")] table = [" ".join(map(str.ljust, row, sizes)).rstrip() for row in rows] return table, sizes def is_installable_dir(path: str) -> bool: """Is path is a directory containing pyproject.toml or setup.py? If pyproject.toml exists, this is a PEP 517 project. Otherwise we look for a legacy setuptools layout by identifying setup.py. We don't check for the setup.cfg because using it without setup.py is only available for PEP 517 projects, which are already covered by the pyproject.toml check. """ if not os.path.isdir(path): return False if os.path.isfile(os.path.join(path, "pyproject.toml")): return True if os.path.isfile(os.path.join(path, "setup.py")): return True return False def read_chunks( file: BinaryIO, size: int = FILE_CHUNK_SIZE ) -> Generator[bytes, None, None]: """Yield pieces of data from a file-like object until EOF.""" while True: chunk = file.read(size) if not chunk: break yield chunk def normalize_path(path: str, resolve_symlinks: bool = True) -> str: """ Convert a path to its canonical, case-normalized, absolute version. """ path = os.path.expanduser(path) if resolve_symlinks: path = os.path.realpath(path) else: path = os.path.abspath(path) return os.path.normcase(path) def splitext(path: str) -> Tuple[str, str]: """Like os.path.splitext, but take off .tar too""" base, ext = posixpath.splitext(path) if base.lower().endswith(".tar"): ext = base[-4:] + ext base = base[:-4] return base, ext def renames(old: str, new: str) -> None: """Like os.renames(), but handles renaming across devices.""" # Implementation borrowed from os.renames(). head, tail = os.path.split(new) if head and tail and not os.path.exists(head): os.makedirs(head) shutil.move(old, new) head, tail = os.path.split(old) if head and tail: try: os.removedirs(head) except OSError: pass def is_local(path: str) -> bool: """ Return True if path is within sys.prefix, if we're running in a virtualenv. If we're not in a virtualenv, all paths are considered "local." Caution: this function assumes the head of path has been normalized with normalize_path. """ if not running_under_virtualenv(): return True return path.startswith(normalize_path(sys.prefix)) def write_output(msg: Any, *args: Any) -> None: logger.info(msg, *args) class StreamWrapper(StringIO): orig_stream: TextIO @classmethod def from_stream(cls, orig_stream: TextIO) -> "StreamWrapper": ret = cls() ret.orig_stream = orig_stream return ret # compileall.compile_dir() needs stdout.encoding to print to stdout # type ignore is because TextIOBase.encoding is writeable @property def encoding(self) -> str: # type: ignore return self.orig_stream.encoding # Simulates an enum def enum(*sequential: Any, **named: Any) -> Type[Any]: enums = dict(zip(sequential, range(len(sequential))), **named) reverse = {value: key for key, value in enums.items()} enums["reverse_mapping"] = reverse return type("Enum", (), enums) def build_netloc(host: str, port: Optional[int]) -> str: """ Build a netloc from a host-port pair """ if port is None: return host if ":" in host: # Only wrap host with square brackets when it is IPv6 host = f"[{host}]" return f"{host}:{port}" def build_url_from_netloc(netloc: str, scheme: str = "https") -> str: """ Build a full URL from a netloc. """ if netloc.count(":") >= 2 and "@" not in netloc and "[" not in netloc: # It must be a bare IPv6 address, so wrap it with brackets. netloc = f"[{netloc}]" return f"{scheme}://{netloc}" def parse_netloc(netloc: str) -> Tuple[Optional[str], Optional[int]]: """ Return the host-port pair from a netloc. """ url = build_url_from_netloc(netloc) parsed = urllib.parse.urlparse(url) return parsed.hostname, parsed.port def split_auth_from_netloc(netloc: str) -> NetlocTuple: """ Parse out and remove the auth information from a netloc. Returns: (netloc, (username, password)). """ if "@" not in netloc: return netloc, (None, None) # Split from the right because that's how urllib.parse.urlsplit() # behaves if more than one @ is present (which can be checked using # the password attribute of urlsplit()'s return value). auth, netloc = netloc.rsplit("@", 1) pw: Optional[str] = None if ":" in auth: # Split from the left because that's how urllib.parse.urlsplit() # behaves if more than one : is present (which again can be checked # using the password attribute of the return value) user, pw = auth.split(":", 1) else: user, pw = auth, None user = urllib.parse.unquote(user) if pw is not None: pw = urllib.parse.unquote(pw) return netloc, (user, pw) def redact_netloc(netloc: str) -> str: """ Replace the sensitive data in a netloc with "****", if it exists. For example: - "user:pass@example.com" returns "user:****@example.com" - "accesstoken@example.com" returns "****@example.com" """ netloc, (user, password) = split_auth_from_netloc(netloc) if user is None: return netloc if password is None: user = "****" password = "" else: user = urllib.parse.quote(user) password = ":****" return f"{user}{password}@{netloc}" def _transform_url( url: str, transform_netloc: Callable[[str], Tuple[Any, ...]] ) -> Tuple[str, NetlocTuple]: """Transform and replace netloc in a url. transform_netloc is a function taking the netloc and returning a tuple. The first element of this tuple is the new netloc. The entire tuple is returned. Returns a tuple containing the transformed url as item 0 and the original tuple returned by transform_netloc as item 1. """ purl = urllib.parse.urlsplit(url) netloc_tuple = transform_netloc(purl.netloc) # stripped url url_pieces = (purl.scheme, netloc_tuple[0], purl.path, purl.query, purl.fragment) surl = urllib.parse.urlunsplit(url_pieces) return surl, cast("NetlocTuple", netloc_tuple) def _get_netloc(netloc: str) -> NetlocTuple: return split_auth_from_netloc(netloc) def _redact_netloc(netloc: str) -> Tuple[str]: return (redact_netloc(netloc),) def split_auth_netloc_from_url( url: str, ) -> Tuple[str, str, Tuple[Optional[str], Optional[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] def redact_auth_from_requirement(req: Requirement) -> str: """Replace the password in a given requirement url with ****.""" if not req.url: return str(req) return str(req).replace(req.url, redact_auth_from_url(req.url)) @dataclass(frozen=True) class HiddenText: secret: str redacted: str def __repr__(self) -> str: return f"<HiddenText {str(self)!r}>" def __str__(self) -> str: return self.redacted # This is useful for testing. def __eq__(self, other: Any) -> bool: if type(self) is not 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 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, Union[str, List[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, Union[str, List[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, Union[str, List[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, Union[str, List[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, Union[str, List[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, Union[str, List[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, Union[str, List[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, Union[str, List[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, ) def warn_if_run_as_root() -> None: """Output a warning for sudo users on Unix. In a virtual environment, sudo pip still writes to virtualenv. On Windows, users may run pip as Administrator without issues. This warning only applies to Unix root users outside of virtualenv. """ if running_under_virtualenv(): return if not hasattr(os, "getuid"): return # On Windows, there are no "system managed" Python packages. Installing as # Administrator via pip is the correct way of updating system environments. # # We choose sys.platform over utils.compat.WINDOWS here to enable Mypy platform # checks: https://mypy.readthedocs.io/en/stable/common_issues.html if sys.platform == "win32" or sys.platform == "cygwin": return if os.getuid() != 0: return logger.warning( "Running pip as the 'root' user can result in broken permissions and " "conflicting behaviour with the system package manager, possibly " "rendering your system unusable." "It is recommended to use a virtual environment instead: " "https://pip.pypa.io/warnings/venv. " "Use the --root-user-action option if you know what you are doing and " "want to suppress this warning." )
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