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File Name : self_outdated_check.py

import datetime
import hashlib
import json
import logging
import optparse
import os.path
import sys
from typing import Any, Dict

from pip._vendor.packaging.version import parse as parse_version

from pip._internal.index.collector import LinkCollector
from pip._internal.index.package_finder import PackageFinder
from pip._internal.metadata import get_default_environment
from pip._internal.models.selection_prefs import SelectionPreferences
from pip._internal.network.session import PipSession
from pip._internal.utils.filesystem import adjacent_tmp_file, check_path_owner, replace
from pip._internal.utils.misc import ensure_dir

SELFCHECK_DATE_FMT = "%Y-%m-%dT%H:%M:%SZ"

logger = logging.getLogger(__name__)

def _get_statefile_name(key: str) -> str:
    key_bytes = key.encode()
    name = hashlib.sha224(key_bytes).hexdigest()
    return name

class SelfCheckState:
    def __init__(self, cache_dir: str) -> None:
        self.state: Dict[str, Any] = {}
        self.statefile_path = None

# Try to load the existing state
        if cache_dir:
            self.statefile_path = os.path.join(
                cache_dir, "selfcheck", _get_statefile_name(self.key)
            )
            try:
                with open(self.statefile_path, encoding="utf-8") as statefile:
                    self.state = json.load(statefile)
            except (OSError, ValueError, KeyError):
                # Explicitly suppressing exceptions, since we don't want to
                # error out if the cache file is invalid.
                pass

@property
    def key(self) -> str:
        return sys.prefix

def save(self, pypi_version: str, current_time: datetime.datetime) -> None:
        # If we do not have a path to cache in, don't bother saving.
        if not self.statefile_path:
            return

# Check to make sure that we own the directory
        if not check_path_owner(os.path.dirname(self.statefile_path)):
            return

# Now that we've ensured the directory is owned by this user, we'll go
        # ahead and make sure that all our directories are created.
        ensure_dir(os.path.dirname(self.statefile_path))

state = {
            # Include the key so it's easy to tell which pip wrote the
            # file.
            "key": self.key,
            "last_check": current_time.strftime(SELFCHECK_DATE_FMT),
            "pypi_version": pypi_version,
        }

text = json.dumps(state, sort_keys=True, separators=(",", ":"))

with adjacent_tmp_file(self.statefile_path) as f:
            f.write(text.encode())

try:
            # Since we have a prefix-specific state file, we can just
            # overwrite whatever is there, no need to check.
            replace(f.name, self.statefile_path)
        except OSError:
            # Best effort.
            pass

def was_installed_by_pip(pkg: str) -> bool:
    """Checks whether pkg was installed by pip

This is used not to display the upgrade message when pip is in fact
    installed by system package manager, such as dnf on Fedora.
    """
    dist = get_default_environment().get_distribution(pkg)
    return dist is not None and "pip" == dist.installer

def pip_self_version_check(session: PipSession, options: optparse.Values) -> None:
    """Check for an update for pip.

Limit the frequency of checks to once per week. State is stored either in
    the active virtualenv or in the user's USER_CACHE_DIR keyed off the prefix
    of the pip script path.
    """
    installed_dist = get_default_environment().get_distribution("pip")
    if not installed_dist:
        return

pip_version = installed_dist.version
    pypi_version = None

try:
        state = SelfCheckState(cache_dir=options.cache_dir)

current_time = datetime.datetime.utcnow()
        # Determine if we need to refresh the state
        if "last_check" in state.state and "pypi_version" in state.state:
            last_check = datetime.datetime.strptime(
                state.state["last_check"], SELFCHECK_DATE_FMT
            )
            if (current_time - last_check).total_seconds() < 7 * 24 * 60 * 60:
                pypi_version = state.state["pypi_version"]

# Refresh the version if we need to or just see if we need to warn
        if pypi_version is None:
            # Lets use PackageFinder to see what the latest pip version is
            link_collector = LinkCollector.create(
                session,
                options=options,
                suppress_no_index=True,
            )

# Pass allow_yanked=False so we don't suggest upgrading to a
            # yanked version.
            selection_prefs = SelectionPreferences(
                allow_yanked=False,
                allow_all_prereleases=False,  # Explicitly set to False
            )

finder = PackageFinder.create(
                link_collector=link_collector,
                selection_prefs=selection_prefs,
            )
            best_candidate = finder.find_best_candidate("pip").best_candidate
            if best_candidate is None:
                return
            pypi_version = str(best_candidate.version)

# save that we've performed a check
            state.save(pypi_version, current_time)

remote_version = parse_version(pypi_version)

local_version_is_older = (
            pip_version < remote_version
            and pip_version.base_version != remote_version.base_version
            and was_installed_by_pip("pip")
        )

# Determine if our pypi_version is older
        if not local_version_is_older:
            return

# We cannot tell how the current pip is available in the current
        # command context, so be pragmatic here and suggest the command
        # that's always available. This does not accommodate spaces in
        # `sys.executable`.
        pip_cmd = f"{sys.executable} -m pip"
        logger.warning(
            "You are using pip version %s; however, version %s is "
            "available.\nYou should consider upgrading via the "
            "'%s install --upgrade pip' command.",
            pip_version,
            pypi_version,
            pip_cmd,
        )
    except Exception:
        logger.debug(
            "There was an error checking the latest version of pip",
            exc_info=True,
        )

Name	Type	Size	Permission	Last Modified	Actions
.	dir	-	0755	2024-03-03 10:49:56
..	dir	-	0755	2024-03-03 10:49:57
__pycache__	dir	-	0755	2024-03-03 10:49:56
cli	dir	-	0755	2024-03-03 10:49:56
commands	dir	-	0755	2024-03-03 10:49:56
distributions	dir	-	0755	2024-03-03 10:49:56
index	dir	-	0755	2024-03-03 10:49:56
locations	dir	-	0755	2024-03-03 10:49:56
metadata	dir	-	0755	2024-03-03 10:49:56
models	dir	-	0755	2024-03-03 10:49:56
network	dir	-	0755	2024-03-03 10:49:56
operations	dir	-	0755	2024-03-03 10:49:56
req	dir	-	0755	2024-03-03 10:49:56
resolution	dir	-	0755	2024-03-03 10:49:56
utils	dir	-	0755	2024-03-03 10:49:56
vcs	dir	-	0755	2024-03-03 10:49:56
__init__.py	text/x-script.python	587 B	0644	2023-11-13 09:47:44
build_env.py	text/plain	9.72 KB	0644	2023-11-13 09:47:44
cache.py	text/plain	9.22 KB	0644	2023-11-13 09:47:44
configuration.py	text/plain	12.84 KB	0644	2023-11-13 09:47:44
exceptions.py	text/plain	12.46 KB	0644	2023-11-13 09:47:44
main.py	text/x-script.python	340 B	0644	2023-11-13 09:47:44
pyproject.py	text/x-script.python	7.05 KB	0644	2023-11-13 09:47:44
self_outdated_check.py	text/x-script.python	6.24 KB	0644	2023-11-13 09:47:44
wheel_builder.py	text/plain	11.96 KB	0644	2023-11-13 09:47:44