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255 lines
9.5 KiB
255 lines
9.5 KiB
3 years ago
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import collections
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import logging
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import os
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from typing import Container, Dict, Iterable, Iterator, List, NamedTuple, Optional, Set
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from pip._vendor.packaging.utils import canonicalize_name
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from pip._vendor.packaging.version import Version
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from pip._internal.exceptions import BadCommand, InstallationError
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from pip._internal.metadata import BaseDistribution, get_environment
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from pip._internal.req.constructors import (
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install_req_from_editable,
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install_req_from_line,
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)
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from pip._internal.req.req_file import COMMENT_RE
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from pip._internal.utils.direct_url_helpers import direct_url_as_pep440_direct_reference
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logger = logging.getLogger(__name__)
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class _EditableInfo(NamedTuple):
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requirement: str
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comments: List[str]
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def freeze(
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requirement: Optional[List[str]] = None,
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local_only: bool = False,
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user_only: bool = False,
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paths: Optional[List[str]] = None,
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isolated: bool = False,
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exclude_editable: bool = False,
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skip: Container[str] = (),
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) -> Iterator[str]:
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installations: Dict[str, FrozenRequirement] = {}
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dists = get_environment(paths).iter_installed_distributions(
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local_only=local_only,
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skip=(),
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user_only=user_only,
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)
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for dist in dists:
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req = FrozenRequirement.from_dist(dist)
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if exclude_editable and req.editable:
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continue
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installations[req.canonical_name] = req
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if requirement:
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# the options that don't get turned into an InstallRequirement
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# should only be emitted once, even if the same option is in multiple
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# requirements files, so we need to keep track of what has been emitted
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# so that we don't emit it again if it's seen again
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emitted_options: Set[str] = set()
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# keep track of which files a requirement is in so that we can
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# give an accurate warning if a requirement appears multiple times.
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req_files: Dict[str, List[str]] = collections.defaultdict(list)
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for req_file_path in requirement:
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with open(req_file_path) as req_file:
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for line in req_file:
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if (
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not line.strip()
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or line.strip().startswith("#")
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or line.startswith(
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(
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"-r",
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"--requirement",
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"-f",
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"--find-links",
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"-i",
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"--index-url",
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"--pre",
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"--trusted-host",
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"--process-dependency-links",
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"--extra-index-url",
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"--use-feature",
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)
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)
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):
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line = line.rstrip()
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if line not in emitted_options:
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emitted_options.add(line)
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yield line
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continue
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if line.startswith("-e") or line.startswith("--editable"):
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if line.startswith("-e"):
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line = line[2:].strip()
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else:
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line = line[len("--editable") :].strip().lstrip("=")
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line_req = install_req_from_editable(
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line,
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isolated=isolated,
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)
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else:
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line_req = install_req_from_line(
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COMMENT_RE.sub("", line).strip(),
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isolated=isolated,
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)
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if not line_req.name:
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logger.info(
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"Skipping line in requirement file [%s] because "
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"it's not clear what it would install: %s",
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req_file_path,
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line.strip(),
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)
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logger.info(
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" (add #egg=PackageName to the URL to avoid"
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" this warning)"
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)
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else:
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line_req_canonical_name = canonicalize_name(line_req.name)
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if line_req_canonical_name not in installations:
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# either it's not installed, or it is installed
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# but has been processed already
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if not req_files[line_req.name]:
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logger.warning(
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"Requirement file [%s] contains %s, but "
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"package %r is not installed",
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req_file_path,
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COMMENT_RE.sub("", line).strip(),
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line_req.name,
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)
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else:
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req_files[line_req.name].append(req_file_path)
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else:
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yield str(installations[line_req_canonical_name]).rstrip()
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del installations[line_req_canonical_name]
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req_files[line_req.name].append(req_file_path)
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# Warn about requirements that were included multiple times (in a
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# single requirements file or in different requirements files).
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for name, files in req_files.items():
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if len(files) > 1:
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logger.warning(
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"Requirement %s included multiple times [%s]",
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name,
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", ".join(sorted(set(files))),
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)
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yield ("## The following requirements were added by pip freeze:")
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for installation in sorted(installations.values(), key=lambda x: x.name.lower()):
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if installation.canonical_name not in skip:
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yield str(installation).rstrip()
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def _format_as_name_version(dist: BaseDistribution) -> str:
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if isinstance(dist.version, Version):
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return f"{dist.raw_name}=={dist.version}"
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return f"{dist.raw_name}==={dist.version}"
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def _get_editable_info(dist: BaseDistribution) -> _EditableInfo:
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"""
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Compute and return values (req, comments) for use in
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FrozenRequirement.from_dist().
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"""
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editable_project_location = dist.editable_project_location
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assert editable_project_location
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location = os.path.normcase(os.path.abspath(editable_project_location))
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from pip._internal.vcs import RemoteNotFoundError, RemoteNotValidError, vcs
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vcs_backend = vcs.get_backend_for_dir(location)
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if vcs_backend is None:
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display = _format_as_name_version(dist)
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logger.debug(
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'No VCS found for editable requirement "%s" in: %r',
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display,
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location,
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)
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return _EditableInfo(
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requirement=location,
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comments=[f"# Editable install with no version control ({display})"],
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)
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vcs_name = type(vcs_backend).__name__
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try:
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req = vcs_backend.get_src_requirement(location, dist.raw_name)
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except RemoteNotFoundError:
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display = _format_as_name_version(dist)
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return _EditableInfo(
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requirement=location,
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comments=[f"# Editable {vcs_name} install with no remote ({display})"],
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)
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except RemoteNotValidError as ex:
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display = _format_as_name_version(dist)
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return _EditableInfo(
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requirement=location,
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comments=[
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f"# Editable {vcs_name} install ({display}) with either a deleted "
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f"local remote or invalid URI:",
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f"# '{ex.url}'",
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],
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)
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except BadCommand:
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logger.warning(
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"cannot determine version of editable source in %s "
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"(%s command not found in path)",
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location,
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vcs_backend.name,
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)
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return _EditableInfo(requirement=location, comments=[])
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except InstallationError as exc:
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logger.warning("Error when trying to get requirement for VCS system %s", exc)
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else:
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return _EditableInfo(requirement=req, comments=[])
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logger.warning("Could not determine repository location of %s", location)
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return _EditableInfo(
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requirement=location,
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comments=["## !! Could not determine repository location"],
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)
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class FrozenRequirement:
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def __init__(
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self,
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name: str,
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req: str,
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editable: bool,
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comments: Iterable[str] = (),
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) -> None:
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self.name = name
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self.canonical_name = canonicalize_name(name)
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self.req = req
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self.editable = editable
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self.comments = comments
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@classmethod
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def from_dist(cls, dist: BaseDistribution) -> "FrozenRequirement":
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editable = dist.editable
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if editable:
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req, comments = _get_editable_info(dist)
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else:
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comments = []
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direct_url = dist.direct_url
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if direct_url:
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# if PEP 610 metadata is present, use it
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req = direct_url_as_pep440_direct_reference(direct_url, dist.raw_name)
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else:
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# name==version requirement
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req = _format_as_name_version(dist)
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return cls(dist.raw_name, req, editable, comments=comments)
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def __str__(self) -> str:
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req = self.req
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if self.editable:
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req = f"-e {req}"
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return "\n".join(list(self.comments) + [str(req)]) + "\n"
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