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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. | |
| """ | |
| 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[Any]) -> 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) | |