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File Name : list.py

import json
import logging
from optparse import Values
from typing import TYPE_CHECKING, Iterator, List, Optional, Sequence, Tuple, cast

from pip._vendor.packaging.utils import canonicalize_name

from pip._internal.cli import cmdoptions
from pip._internal.cli.req_command import IndexGroupCommand
from pip._internal.cli.status_codes import SUCCESS
from pip._internal.exceptions import CommandError
from pip._internal.index.collector import LinkCollector
from pip._internal.index.package_finder import PackageFinder
from pip._internal.metadata import BaseDistribution, get_environment
from pip._internal.models.selection_prefs import SelectionPreferences
from pip._internal.network.session import PipSession
from pip._internal.utils.compat import stdlib_pkgs
from pip._internal.utils.misc import tabulate, write_output
from pip._internal.utils.parallel import map_multithread

if TYPE_CHECKING:
    from pip._internal.metadata.base import DistributionVersion

class _DistWithLatestInfo(BaseDistribution):
        """Give the distribution object a couple of extra fields.

These will be populated during ``get_outdated()``. This is dirty but
        makes the rest of the code much cleaner.
        """

latest_version: DistributionVersion
        latest_filetype: str

_ProcessedDists = Sequence[_DistWithLatestInfo]

logger = logging.getLogger(__name__)

class ListCommand(IndexGroupCommand):
    """
    List installed packages, including editables.

Packages are listed in a case-insensitive sorted order.
    """

ignore_require_venv = True
    usage = """
      %prog [options]"""

def add_options(self) -> None:
        self.cmd_opts.add_option(
            "-o",
            "--outdated",
            action="store_true",
            default=False,
            help="List outdated packages",
        )
        self.cmd_opts.add_option(
            "-u",
            "--uptodate",
            action="store_true",
            default=False,
            help="List uptodate packages",
        )
        self.cmd_opts.add_option(
            "-e",
            "--editable",
            action="store_true",
            default=False,
            help="List editable projects.",
        )
        self.cmd_opts.add_option(
            "-l",
            "--local",
            action="store_true",
            default=False,
            help=(
                "If in a virtualenv that has global access, do not list "
                "globally-installed packages."
            ),
        )
        self.cmd_opts.add_option(
            "--user",
            dest="user",
            action="store_true",
            default=False,
            help="Only output packages installed in user-site.",
        )
        self.cmd_opts.add_option(cmdoptions.list_path())
        self.cmd_opts.add_option(
            "--pre",
            action="store_true",
            default=False,
            help=(
                "Include pre-release and development versions. By default, "
                "pip only finds stable versions."
            ),
        )

self.cmd_opts.add_option(
            "--format",
            action="store",
            dest="list_format",
            default="columns",
            choices=("columns", "freeze", "json"),
            help="Select the output format among: columns (default), freeze, or json",
        )

self.cmd_opts.add_option(
            "--not-required",
            action="store_true",
            dest="not_required",
            help="List packages that are not dependencies of installed packages.",
        )

self.cmd_opts.add_option(
            "--exclude-editable",
            action="store_false",
            dest="include_editable",
            help="Exclude editable package from output.",
        )
        self.cmd_opts.add_option(
            "--include-editable",
            action="store_true",
            dest="include_editable",
            help="Include editable package from output.",
            default=True,
        )
        self.cmd_opts.add_option(cmdoptions.list_exclude())
        index_opts = cmdoptions.make_option_group(cmdoptions.index_group, self.parser)

self.parser.insert_option_group(0, index_opts)
        self.parser.insert_option_group(0, self.cmd_opts)

def _build_package_finder(
        self, options: Values, session: PipSession
    ) -> PackageFinder:
        """
        Create a package finder appropriate to this list command.
        """
        link_collector = LinkCollector.create(session, options=options)

# Pass allow_yanked=False to ignore yanked versions.
        selection_prefs = SelectionPreferences(
            allow_yanked=False,
            allow_all_prereleases=options.pre,
        )

return PackageFinder.create(
            link_collector=link_collector,
            selection_prefs=selection_prefs,
        )

def run(self, options: Values, args: List[str]) -> int:
        if options.outdated and options.uptodate:
            raise CommandError("Options --outdated and --uptodate cannot be combined.")

cmdoptions.check_list_path_option(options)

skip = set(stdlib_pkgs)
        if options.excludes:
            skip.update(canonicalize_name(n) for n in options.excludes)

packages: "_ProcessedDists" = [
            cast("_DistWithLatestInfo", d)
            for d in get_environment(options.path).iter_installed_distributions(
                local_only=options.local,
                user_only=options.user,
                editables_only=options.editable,
                include_editables=options.include_editable,
                skip=skip,
            )
        ]

# get_not_required must be called firstly in order to find and
        # filter out all dependencies correctly. Otherwise a package
        # can't be identified as requirement because some parent packages
        # could be filtered out before.
        if options.not_required:
            packages = self.get_not_required(packages, options)

if options.outdated:
            packages = self.get_outdated(packages, options)
        elif options.uptodate:
            packages = self.get_uptodate(packages, options)

self.output_package_listing(packages, options)
        return SUCCESS

def get_outdated(
        self, packages: "_ProcessedDists", options: Values
    ) -> "_ProcessedDists":
        return [
            dist
            for dist in self.iter_packages_latest_infos(packages, options)
            if dist.latest_version > dist.version
        ]

def get_uptodate(
        self, packages: "_ProcessedDists", options: Values
    ) -> "_ProcessedDists":
        return [
            dist
            for dist in self.iter_packages_latest_infos(packages, options)
            if dist.latest_version == dist.version
        ]

def get_not_required(
        self, packages: "_ProcessedDists", options: Values
    ) -> "_ProcessedDists":
        dep_keys = {
            canonicalize_name(dep.name)
            for dist in packages
            for dep in (dist.iter_dependencies() or ())
        }

# Create a set to remove duplicate packages, and cast it to a list
        # to keep the return type consistent with get_outdated and
        # get_uptodate
        return list({pkg for pkg in packages if pkg.canonical_name not in dep_keys})

def iter_packages_latest_infos(
        self, packages: "_ProcessedDists", options: Values
    ) -> Iterator["_DistWithLatestInfo"]:
        with self._build_session(options) as session:
            finder = self._build_package_finder(options, session)

def latest_info(
                dist: "_DistWithLatestInfo",
            ) -> Optional["_DistWithLatestInfo"]:
                all_candidates = finder.find_all_candidates(dist.canonical_name)
                if not options.pre:
                    # Remove prereleases
                    all_candidates = [
                        candidate
                        for candidate in all_candidates
                        if not candidate.version.is_prerelease
                    ]

evaluator = finder.make_candidate_evaluator(
                    project_name=dist.canonical_name,
                )
                best_candidate = evaluator.sort_best_candidate(all_candidates)
                if best_candidate is None:
                    return None

remote_version = best_candidate.version
                if best_candidate.link.is_wheel:
                    typ = "wheel"
                else:
                    typ = "sdist"
                dist.latest_version = remote_version
                dist.latest_filetype = typ
                return dist

for dist in map_multithread(latest_info, packages):
                if dist is not None:
                    yield dist

def output_package_listing(
        self, packages: "_ProcessedDists", options: Values
    ) -> None:
        packages = sorted(
            packages,
            key=lambda dist: dist.canonical_name,
        )
        if options.list_format == "columns" and packages:
            data, header = format_for_columns(packages, options)
            self.output_package_listing_columns(data, header)
        elif options.list_format == "freeze":
            for dist in packages:
                if options.verbose >= 1:
                    write_output(
                        "%s==%s (%s)", dist.raw_name, dist.version, dist.location
                    )
                else:
                    write_output("%s==%s", dist.raw_name, dist.version)
        elif options.list_format == "json":
            write_output(format_for_json(packages, options))

def output_package_listing_columns(
        self, data: List[List[str]], header: List[str]
    ) -> None:
        # insert the header first: we need to know the size of column names
        if len(data) > 0:
            data.insert(0, header)

pkg_strings, sizes = tabulate(data)

# Create and add a separator.
        if len(data) > 0:
            pkg_strings.insert(1, " ".join(map(lambda x: "-" * x, sizes)))

for val in pkg_strings:
            write_output(val)

def format_for_columns(
    pkgs: "_ProcessedDists", options: Values
) -> Tuple[List[List[str]], List[str]]:
    """
    Convert the package data into something usable
    by output_package_listing_columns.
    """
    header = ["Package", "Version"]

running_outdated = options.outdated
    if running_outdated:
        header.extend(["Latest", "Type"])

has_editables = any(x.editable for x in pkgs)
    if has_editables:
        header.append("Editable project location")

if options.verbose >= 1:
        header.append("Location")
    if options.verbose >= 1:
        header.append("Installer")

data = []
    for proj in pkgs:
        # if we're working on the 'outdated' list, separate out the
        # latest_version and type
        row = [proj.raw_name, str(proj.version)]

if running_outdated:
            row.append(str(proj.latest_version))
            row.append(proj.latest_filetype)

if has_editables:
            row.append(proj.editable_project_location or "")

if options.verbose >= 1:
            row.append(proj.location or "")
        if options.verbose >= 1:
            row.append(proj.installer)

data.append(row)

return data, header

def format_for_json(packages: "_ProcessedDists", options: Values) -> str:
    data = []
    for dist in packages:
        info = {
            "name": dist.raw_name,
            "version": str(dist.version),
        }
        if options.verbose >= 1:
            info["location"] = dist.location or ""
            info["installer"] = dist.installer
        if options.outdated:
            info["latest_version"] = str(dist.latest_version)
            info["latest_filetype"] = dist.latest_filetype
        editable_project_location = dist.editable_project_location
        if editable_project_location:
            info["editable_project_location"] = editable_project_location
        data.append(info)
    return json.dumps(data)

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