mirror of
https://github.com/pypa/pip
synced 2023-12-13 21:30:23 +01:00
86 lines
2.7 KiB
Python
86 lines
2.7 KiB
Python
from __future__ import absolute_import
|
|
|
|
import logging
|
|
import sys
|
|
from email.parser import FeedParser
|
|
|
|
from pip._vendor import pkg_resources
|
|
from pip._vendor.packaging import specifiers, version
|
|
|
|
from pip._internal import exceptions
|
|
from pip._internal.utils.misc import display_path
|
|
from pip._internal.utils.typing import MYPY_CHECK_RUNNING
|
|
|
|
if MYPY_CHECK_RUNNING:
|
|
from typing import Optional
|
|
from email.message import Message
|
|
from pip._vendor.pkg_resources import Distribution
|
|
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
def check_requires_python(requires_python):
|
|
# type: (Optional[str]) -> bool
|
|
"""
|
|
Check if the python version in use match the `requires_python` specifier.
|
|
|
|
Returns `True` if the version of python in use matches the requirement.
|
|
Returns `False` if the version of python in use does not matches the
|
|
requirement.
|
|
|
|
Raises an InvalidSpecifier if `requires_python` have an invalid format.
|
|
"""
|
|
if requires_python is None:
|
|
# The package provides no information
|
|
return True
|
|
requires_python_specifier = specifiers.SpecifierSet(requires_python)
|
|
|
|
# We only use major.minor.micro
|
|
python_version = version.parse('.'.join(map(str, sys.version_info[:3])))
|
|
return python_version in requires_python_specifier
|
|
|
|
|
|
def get_metadata(dist):
|
|
# type: (Distribution) -> Message
|
|
if (isinstance(dist, pkg_resources.DistInfoDistribution) and
|
|
dist.has_metadata('METADATA')):
|
|
metadata = dist.get_metadata('METADATA')
|
|
elif dist.has_metadata('PKG-INFO'):
|
|
metadata = dist.get_metadata('PKG-INFO')
|
|
else:
|
|
logger.warning("No metadata found in %s", display_path(dist.location))
|
|
metadata = ''
|
|
|
|
feed_parser = FeedParser()
|
|
feed_parser.feed(metadata)
|
|
return feed_parser.close()
|
|
|
|
|
|
def check_dist_requires_python(dist):
|
|
pkg_info_dict = get_metadata(dist)
|
|
requires_python = pkg_info_dict.get('Requires-Python')
|
|
try:
|
|
if not check_requires_python(requires_python):
|
|
raise exceptions.UnsupportedPythonVersion(
|
|
"%s requires Python '%s' but the running Python is %s" % (
|
|
dist.project_name,
|
|
requires_python,
|
|
'.'.join(map(str, sys.version_info[:3])),)
|
|
)
|
|
except specifiers.InvalidSpecifier as e:
|
|
logger.warning(
|
|
"Package %s has an invalid Requires-Python entry %s - %s",
|
|
dist.project_name, requires_python, e,
|
|
)
|
|
return
|
|
|
|
|
|
def get_installer(dist):
|
|
# type: (Distribution) -> str
|
|
if dist.has_metadata('INSTALLER'):
|
|
for line in dist.get_metadata_lines('INSTALLER'):
|
|
if line.strip():
|
|
return line.strip()
|
|
return ''
|