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| import logging | |
| import os | |
| from email.parser import FeedParser | |
| from optparse import Values | |
| from typing import Dict, Iterator, List | |
| from pip._vendor import pkg_resources | |
| from pip._vendor.packaging.utils import canonicalize_name | |
| from pip._internal.cli.base_command import Command | |
| from pip._internal.cli.status_codes import ERROR, SUCCESS | |
| from pip._internal.utils.misc import write_output | |
| logger = logging.getLogger(__name__) | |
| class ShowCommand(Command): | |
| """ | |
| Show information about one or more installed packages. | |
| The output is in RFC-compliant mail header format. | |
| """ | |
| usage = """ | |
| %prog [options] <package> ...""" | |
| ignore_require_venv = True | |
| def add_options(self): | |
| # type: () -> None | |
| self.cmd_opts.add_option( | |
| '-f', '--files', | |
| dest='files', | |
| action='store_true', | |
| default=False, | |
| help='Show the full list of installed files for each package.') | |
| self.parser.insert_option_group(0, self.cmd_opts) | |
| def run(self, options, args): | |
| # type: (Values, List[str]) -> int | |
| if not args: | |
| logger.warning('ERROR: Please provide a package name or names.') | |
| return ERROR | |
| query = args | |
| results = search_packages_info(query) | |
| if not print_results( | |
| results, list_files=options.files, verbose=options.verbose): | |
| return ERROR | |
| return SUCCESS | |
| def search_packages_info(query): | |
| # type: (List[str]) -> Iterator[Dict[str, str]] | |
| """ | |
| Gather details from installed distributions. Print distribution name, | |
| version, location, and installed files. Installed files requires a | |
| pip generated 'installed-files.txt' in the distributions '.egg-info' | |
| directory. | |
| """ | |
| installed = {} | |
| for p in pkg_resources.working_set: | |
| installed[canonicalize_name(p.project_name)] = p | |
| query_names = [canonicalize_name(name) for name in query] | |
| missing = sorted( | |
| [name for name, pkg in zip(query, query_names) if pkg not in installed] | |
| ) | |
| if missing: | |
| logger.warning('Package(s) not found: %s', ', '.join(missing)) | |
| def get_requiring_packages(package_name): | |
| # type: (str) -> List[str] | |
| canonical_name = canonicalize_name(package_name) | |
| return [ | |
| pkg.project_name for pkg in pkg_resources.working_set | |
| if canonical_name in | |
| [canonicalize_name(required.name) for required in | |
| pkg.requires()] | |
| ] | |
| for dist in [installed[pkg] for pkg in query_names if pkg in installed]: | |
| package = { | |
| 'name': dist.project_name, | |
| 'version': dist.version, | |
| 'location': dist.location, | |
| 'requires': [dep.project_name for dep in dist.requires()], | |
| 'required_by': get_requiring_packages(dist.project_name) | |
| } | |
| file_list = None | |
| metadata = '' | |
| if isinstance(dist, pkg_resources.DistInfoDistribution): | |
| # RECORDs should be part of .dist-info metadatas | |
| if dist.has_metadata('RECORD'): | |
| lines = dist.get_metadata_lines('RECORD') | |
| paths = [line.split(',')[0] for line in lines] | |
| paths = [os.path.join(dist.location, p) for p in paths] | |
| file_list = [os.path.relpath(p, dist.location) for p in paths] | |
| if dist.has_metadata('METADATA'): | |
| metadata = dist.get_metadata('METADATA') | |
| else: | |
| # Otherwise use pip's log for .egg-info's | |
| if dist.has_metadata('installed-files.txt'): | |
| paths = dist.get_metadata_lines('installed-files.txt') | |
| paths = [os.path.join(dist.egg_info, p) for p in paths] | |
| file_list = [os.path.relpath(p, dist.location) for p in paths] | |
| if dist.has_metadata('PKG-INFO'): | |
| metadata = dist.get_metadata('PKG-INFO') | |
| if dist.has_metadata('entry_points.txt'): | |
| entry_points = dist.get_metadata_lines('entry_points.txt') | |
| package['entry_points'] = entry_points | |
| if dist.has_metadata('INSTALLER'): | |
| for line in dist.get_metadata_lines('INSTALLER'): | |
| if line.strip(): | |
| package['installer'] = line.strip() | |
| break | |
| # @todo: Should pkg_resources.Distribution have a | |
| # `get_pkg_info` method? | |
| feed_parser = FeedParser() | |
| feed_parser.feed(metadata) | |
| pkg_info_dict = feed_parser.close() | |
| for key in ('metadata-version', 'summary', | |
| 'home-page', 'author', 'author-email', 'license'): | |
| package[key] = pkg_info_dict.get(key) | |
| # It looks like FeedParser cannot deal with repeated headers | |
| classifiers = [] | |
| for line in metadata.splitlines(): | |
| if line.startswith('Classifier: '): | |
| classifiers.append(line[len('Classifier: '):]) | |
| package['classifiers'] = classifiers | |
| if file_list: | |
| package['files'] = sorted(file_list) | |
| yield package | |
| def print_results(distributions, list_files=False, verbose=False): | |
| # type: (Iterator[Dict[str, str]], bool, bool) -> bool | |
| """ | |
| Print the information from installed distributions found. | |
| """ | |
| results_printed = False | |
| for i, dist in enumerate(distributions): | |
| results_printed = True | |
| if i > 0: | |
| write_output("---") | |
| write_output("Name: %s", dist.get('name', '')) | |
| write_output("Version: %s", dist.get('version', '')) | |
| write_output("Summary: %s", dist.get('summary', '')) | |
| write_output("Home-page: %s", dist.get('home-page', '')) | |
| write_output("Author: %s", dist.get('author', '')) | |
| write_output("Author-email: %s", dist.get('author-email', '')) | |
| write_output("License: %s", dist.get('license', '')) | |
| write_output("Location: %s", dist.get('location', '')) | |
| write_output("Requires: %s", ', '.join(dist.get('requires', []))) | |
| write_output("Required-by: %s", ', '.join(dist.get('required_by', []))) | |
| if verbose: | |
| write_output("Metadata-Version: %s", | |
| dist.get('metadata-version', '')) | |
| write_output("Installer: %s", dist.get('installer', '')) | |
| write_output("Classifiers:") | |
| for classifier in dist.get('classifiers', []): | |
| write_output(" %s", classifier) | |
| write_output("Entry-points:") | |
| for entry in dist.get('entry_points', []): | |
| write_output(" %s", entry.strip()) | |
| if list_files: | |
| write_output("Files:") | |
| for line in dist.get('files', []): | |
| write_output(" %s", line.strip()) | |
| if "files" not in dist: | |
| write_output("Cannot locate installed-files.txt") | |
| return results_printed | |