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import logging | |
from optparse import Values | |
from typing import Any, Iterable, List, Optional, Union | |
from pip._vendor.packaging.version import LegacyVersion, Version | |
from pip._internal.cli import cmdoptions | |
from pip._internal.cli.req_command import IndexGroupCommand | |
from pip._internal.cli.status_codes import ERROR, SUCCESS | |
from pip._internal.commands.search import print_dist_installation_info | |
from pip._internal.exceptions import CommandError, DistributionNotFound, PipError | |
from pip._internal.index.collector import LinkCollector | |
from pip._internal.index.package_finder import PackageFinder | |
from pip._internal.models.selection_prefs import SelectionPreferences | |
from pip._internal.models.target_python import TargetPython | |
from pip._internal.network.session import PipSession | |
from pip._internal.utils.misc import write_output | |
logger = logging.getLogger(__name__) | |
class IndexCommand(IndexGroupCommand): | |
""" | |
Inspect information available from package indexes. | |
""" | |
ignore_require_venv = True | |
usage = """ | |
%prog versions <package> | |
""" | |
def add_options(self) -> None: | |
cmdoptions.add_target_python_options(self.cmd_opts) | |
self.cmd_opts.add_option(cmdoptions.ignore_requires_python()) | |
self.cmd_opts.add_option(cmdoptions.pre()) | |
self.cmd_opts.add_option(cmdoptions.no_binary()) | |
self.cmd_opts.add_option(cmdoptions.only_binary()) | |
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 run(self, options: Values, args: List[str]) -> int: | |
handlers = { | |
"versions": self.get_available_package_versions, | |
} | |
logger.warning( | |
"pip index is currently an experimental command. " | |
"It may be removed/changed in a future release " | |
"without prior warning." | |
) | |
# Determine action | |
if not args or args[0] not in handlers: | |
logger.error( | |
"Need an action (%s) to perform.", | |
", ".join(sorted(handlers)), | |
) | |
return ERROR | |
action = args[0] | |
# Error handling happens here, not in the action-handlers. | |
try: | |
handlers[action](options, args[1:]) | |
except PipError as e: | |
logger.error(e.args[0]) | |
return ERROR | |
return SUCCESS | |
def _build_package_finder( | |
self, | |
options: Values, | |
session: PipSession, | |
target_python: Optional[TargetPython] = None, | |
ignore_requires_python: Optional[bool] = None, | |
) -> PackageFinder: | |
""" | |
Create a package finder appropriate to the index 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, | |
ignore_requires_python=ignore_requires_python, | |
) | |
return PackageFinder.create( | |
link_collector=link_collector, | |
selection_prefs=selection_prefs, | |
target_python=target_python, | |
) | |
def get_available_package_versions(self, options: Values, args: List[Any]) -> None: | |
if len(args) != 1: | |
raise CommandError("You need to specify exactly one argument") | |
target_python = cmdoptions.make_target_python(options) | |
query = args[0] | |
with self._build_session(options) as session: | |
finder = self._build_package_finder( | |
options=options, | |
session=session, | |
target_python=target_python, | |
ignore_requires_python=options.ignore_requires_python, | |
) | |
versions: Iterable[Union[LegacyVersion, Version]] = ( | |
candidate.version for candidate in finder.find_all_candidates(query) | |
) | |
if not options.pre: | |
# Remove prereleases | |
versions = ( | |
version for version in versions if not version.is_prerelease | |
) | |
versions = set(versions) | |
if not versions: | |
raise DistributionNotFound( | |
"No matching distribution found for {}".format(query) | |
) | |
formatted_versions = [str(ver) for ver in sorted(versions, reverse=True)] | |
latest = formatted_versions[0] | |
write_output("{} ({})".format(query, latest)) | |
write_output("Available versions: {}".format(", ".join(formatted_versions))) | |
print_dist_installation_info(query, latest) | |