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from __future__ import annotations import os import re from collections.abc import Iterable, Iterator from pathlib import Path from typing import TYPE_CHECKING from urllib.parse import urljoin, urlsplit from pip._vendor.packaging.pylock import ( Package, PackageArchive, PackageDirectory, PackageSdist, PackageVcs, PackageWheel, Pylock, is_valid_pylock_path, ) from pip._vendor.packaging.version import Version from pip._internal.exceptions import InstallationError from pip._internal.models.link import Link from pip._internal.utils.compat import tomllib from pip._internal.utils.urls import path_to_url, url_to_path if TYPE_CHECKING: from pip._internal.network.session import PipSession from pip._internal.req.req_install import InstallRequirement def _pylock_package_from_install_requirement( ireq: InstallRequirement, base_dir: Path ) -> Package: base_dir = base_dir.resolve() dist = ireq.get_dist() download_info = ireq.download_info assert download_info package_version = None package_vcs = None package_directory = None package_archive = None package_sdist = None package_wheels = None if ireq.is_direct: if download_info.vcs_info: package_vcs = PackageVcs( type=download_info.vcs_info.vcs, url=download_info.url, path=None, requested_revision=download_info.vcs_info.requested_revision, commit_id=download_info.vcs_info.commit_id, subdirectory=download_info.subdirectory, ) elif download_info.dir_info: package_directory = PackageDirectory( path=( Path(url_to_path(download_info.url)) .resolve() .relative_to(base_dir) .as_posix() ), editable=( download_info.dir_info.editable if download_info.dir_info.editable else None ), subdirectory=download_info.subdirectory, ) elif download_info.archive_info: if not download_info.archive_info.hashes: raise NotImplementedError() package_archive = PackageArchive( url=download_info.url, path=None, hashes=download_info.archive_info.hashes, subdirectory=download_info.subdirectory, ) else: # should never happen raise NotImplementedError() else: package_version = dist.version if download_info.archive_info: if not download_info.archive_info.hashes: raise NotImplementedError() link = Link(download_info.url) if link.is_wheel: package_wheels = [ PackageWheel( name=link.filename, url=download_info.url, hashes=download_info.archive_info.hashes, ) ] else: package_sdist = PackageSdist( name=link.filename, url=download_info.url, hashes=download_info.archive_info.hashes, ) else: # should never happen raise NotImplementedError() return Package( name=dist.canonical_name, version=package_version, vcs=package_vcs, directory=package_directory, archive=package_archive, sdist=package_sdist, wheels=package_wheels, ) def pylock_from_install_requirements( install_requirements: Iterable[InstallRequirement], base_dir: Path ) -> Pylock: return Pylock( lock_version=Version("1.0"), created_by="pip", packages=sorted( ( _pylock_package_from_install_requirement(ireq, base_dir) for ireq in install_requirements ), key=lambda p: p.name, ), ) _SCHEME_RE = re.compile("^(http\|https\|file)://", re.IGNORECASE) def _is_url(s: str) -> bool: return bool(_SCHEME_RE.match(s)) def is_valid_pylock_filename(filename: str) -> bool: if _is_url(filename): path = Path(urlsplit(filename).path.rpartition("/")[-1]) else: path = Path(filename) return is_valid_pylock_path(path) def _package_dist_url( pylock_path_or_url: str, path: str \| None, url: str \| None ) -> str: """Compute an url from a Pylock package path and url. Give priority to path over url. If path is relative, compute an url using the pylock file location as base. """ if path is not None: if not os.path.isabs(path): # relative path, join to pylock location if _is_url(pylock_path_or_url): return urljoin(pylock_path_or_url, path) else: return path_to_url( os.path.join(os.path.dirname(pylock_path_or_url), path) ) else: # absolute path, reject if pylock comes from a URL if _is_url(pylock_path_or_url): raise InstallationError( f"Absolute paths are not supported in pylock files obtained " f"from a URL: {path!r} in {pylock_path_or_url!r}" ) return path_to_url(path) else: assert url is not None # guaranteed by packaging.pylock validation return url def package_vcs_requirement_url( pylock_path_or_url: str, package_vcs: PackageVcs ) -> str: dist_url = _package_dist_url(pylock_path_or_url, package_vcs.path, package_vcs.url) url = f"{package_vcs.type}+{dist_url}@{package_vcs.commit_id}" if package_vcs.subdirectory: if "#" in url: raise InstallationError( f"Package URL {url!r} cannot contain fragments in combination " f"with subdirectory field (in {pylock_path_or_url!r})" ) url += "#subdirectory=" + package_vcs.subdirectory return url def package_archive_requirement_url( pylock_path_or_url: str, package_archive: PackageArchive ) -> str: url = _package_dist_url( pylock_path_or_url, package_archive.path, package_archive.url ) if package_archive.subdirectory: if "#" in url: raise InstallationError( f"Package URL {url!r} cannot contain fragments in combination " f"with subdirectory field (in {pylock_path_or_url!r})" ) url += "#subdirectory=" + package_archive.subdirectory return url def package_directory_requirement_url( pylock_path_or_url: str, package_directory: PackageDirectory ) -> str: if _is_url(pylock_path_or_url) and not pylock_path_or_url.startswith("file://"): raise InstallationError( f"Directory entries are not supported in remote pylock.toml " f"{pylock_path_or_url!r}" ) url = _package_dist_url(pylock_path_or_url, package_directory.path, None) assert url.startswith("file://") if not url.endswith("/"): url += "/" if package_directory.subdirectory: url += package_directory.subdirectory if not url.endswith("/"): url += "/" return url def package_sdist_requirement_url( pylock_path_or_url: str, package_sdist: PackageSdist ) -> str: return _package_dist_url(pylock_path_or_url, package_sdist.path, package_sdist.url) def package_wheel_requirement_url( pylock_path_or_url: str, package_wheel: PackageWheel ) -> str: return _package_dist_url(pylock_path_or_url, package_wheel.path, package_wheel.url) def _get_pylock_path_or_url_content(path_or_url: str, session: PipSession) -> str: # TODO: refactor - this is similar to req_file.get_file_content scheme = urlsplit(path_or_url).scheme # Pip has special support for file:// URLs (LocalFSAdapter). if scheme in ["http", "https", "file"]: # Delay importing heavy network modules until absolutely necessary. from pip._internal.network.utils import raise_for_status resp = session.get(path_or_url) raise_for_status(resp) return resp.text # Assume this is a bare path. return Path(path_or_url).read_text(encoding="utf-8") def select_from_pylock_path_or_url( pylock_path_or_url: str, session: PipSession, ) -> Iterator[ tuple[ Package, PackageVcs \| PackageDirectory \| PackageArchive \| PackageWheel \| PackageSdist, ] ]: try: pylock_content = _get_pylock_path_or_url_content(pylock_path_or_url, session) except Exception as exc: raise InstallationError( f"Error reading pylock file {pylock_path_or_url!r}: {exc}" ) from exc try: lock = Pylock.from_dict(tomllib.loads(pylock_content)) except Exception as exc: raise InstallationError( f"Invalid pylock file {pylock_path_or_url!r}: {exc}" ) from exc try: yield from lock.select() except Exception as exc: raise InstallationError( f"Cannot select requirements from pylock file {pylock_path_or_url!r}: {exc}" ) from exc

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