You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

256 lines
9.6 KiB
Python

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