diff options
Diffstat (limited to 'third_party/python/pip/pip/_internal/commands/show.py')
| -rw-r--r-- | third_party/python/pip/pip/_internal/commands/show.py | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/third_party/python/pip/pip/_internal/commands/show.py b/third_party/python/pip/pip/_internal/commands/show.py new file mode 100644 index 0000000000..3f10701f6b --- /dev/null +++ b/third_party/python/pip/pip/_internal/commands/show.py @@ -0,0 +1,189 @@ +import logging +from optparse import Values +from typing import Generator, Iterable, Iterator, List, NamedTuple, Optional + +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.metadata import BaseDistribution, get_default_environment +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) -> 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: Values, args: 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 + + +class _PackageInfo(NamedTuple): + name: str + version: str + location: str + editable_project_location: Optional[str] + requires: List[str] + required_by: List[str] + installer: str + metadata_version: str + classifiers: List[str] + summary: str + homepage: str + project_urls: List[str] + author: str + author_email: str + license: str + entry_points: List[str] + files: Optional[List[str]] + + +def search_packages_info(query: List[str]) -> Generator[_PackageInfo, None, None]: + """ + 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. + """ + env = get_default_environment() + + installed = {dist.canonical_name: dist for dist in env.iter_all_distributions()} + 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(current_dist: BaseDistribution) -> Iterator[str]: + return ( + dist.metadata["Name"] or "UNKNOWN" + for dist in installed.values() + if current_dist.canonical_name + in {canonicalize_name(d.name) for d in dist.iter_dependencies()} + ) + + for query_name in query_names: + try: + dist = installed[query_name] + except KeyError: + continue + + requires = sorted((req.name for req in dist.iter_dependencies()), key=str.lower) + required_by = sorted(_get_requiring_packages(dist), key=str.lower) + + try: + entry_points_text = dist.read_text("entry_points.txt") + entry_points = entry_points_text.splitlines(keepends=False) + except FileNotFoundError: + entry_points = [] + + files_iter = dist.iter_declared_entries() + if files_iter is None: + files: Optional[List[str]] = None + else: + files = sorted(files_iter) + + metadata = dist.metadata + + yield _PackageInfo( + name=dist.raw_name, + version=str(dist.version), + location=dist.location or "", + editable_project_location=dist.editable_project_location, + requires=requires, + required_by=required_by, + installer=dist.installer, + metadata_version=dist.metadata_version or "", + classifiers=metadata.get_all("Classifier", []), + summary=metadata.get("Summary", ""), + homepage=metadata.get("Home-page", ""), + project_urls=metadata.get_all("Project-URL", []), + author=metadata.get("Author", ""), + author_email=metadata.get("Author-email", ""), + license=metadata.get("License", ""), + entry_points=entry_points, + files=files, + ) + + +def print_results( + distributions: Iterable[_PackageInfo], + list_files: bool, + verbose: 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.name) + write_output("Version: %s", dist.version) + write_output("Summary: %s", dist.summary) + write_output("Home-page: %s", dist.homepage) + write_output("Author: %s", dist.author) + write_output("Author-email: %s", dist.author_email) + write_output("License: %s", dist.license) + write_output("Location: %s", dist.location) + if dist.editable_project_location is not None: + write_output( + "Editable project location: %s", dist.editable_project_location + ) + write_output("Requires: %s", ", ".join(dist.requires)) + write_output("Required-by: %s", ", ".join(dist.required_by)) + + if verbose: + write_output("Metadata-Version: %s", dist.metadata_version) + write_output("Installer: %s", dist.installer) + write_output("Classifiers:") + for classifier in dist.classifiers: + write_output(" %s", classifier) + write_output("Entry-points:") + for entry in dist.entry_points: + write_output(" %s", entry.strip()) + write_output("Project-URLs:") + for project_url in dist.project_urls: + write_output(" %s", project_url) + if list_files: + write_output("Files:") + if dist.files is None: + write_output("Cannot locate RECORD or installed-files.txt") + else: + for line in dist.files: + write_output(" %s", line.strip()) + return results_printed |