mirror of https://github.com/sgoudham/Enso-Bot.git
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.
272 lines
8.0 KiB
Python
272 lines
8.0 KiB
Python
from __future__ import absolute_import
|
|
|
|
import errno
|
|
import itertools
|
|
import logging
|
|
import os.path
|
|
import tempfile
|
|
from contextlib import contextmanager
|
|
|
|
from pip._vendor.contextlib2 import ExitStack
|
|
|
|
from pip._internal.utils.misc import enum, rmtree
|
|
from pip._internal.utils.typing import MYPY_CHECK_RUNNING
|
|
|
|
if MYPY_CHECK_RUNNING:
|
|
from typing import Any, Dict, Iterator, Optional, TypeVar, Union
|
|
|
|
_T = TypeVar('_T', bound='TempDirectory')
|
|
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
# Kinds of temporary directories. Only needed for ones that are
|
|
# globally-managed.
|
|
tempdir_kinds = enum(
|
|
BUILD_ENV="build-env",
|
|
EPHEM_WHEEL_CACHE="ephem-wheel-cache",
|
|
REQ_BUILD="req-build",
|
|
)
|
|
|
|
|
|
_tempdir_manager = None # type: Optional[ExitStack]
|
|
|
|
|
|
@contextmanager
|
|
def global_tempdir_manager():
|
|
# type: () -> Iterator[None]
|
|
global _tempdir_manager
|
|
with ExitStack() as stack:
|
|
old_tempdir_manager, _tempdir_manager = _tempdir_manager, stack
|
|
try:
|
|
yield
|
|
finally:
|
|
_tempdir_manager = old_tempdir_manager
|
|
|
|
|
|
class TempDirectoryTypeRegistry(object):
|
|
"""Manages temp directory behavior
|
|
"""
|
|
|
|
def __init__(self):
|
|
# type: () -> None
|
|
self._should_delete = {} # type: Dict[str, bool]
|
|
|
|
def set_delete(self, kind, value):
|
|
# type: (str, bool) -> None
|
|
"""Indicate whether a TempDirectory of the given kind should be
|
|
auto-deleted.
|
|
"""
|
|
self._should_delete[kind] = value
|
|
|
|
def get_delete(self, kind):
|
|
# type: (str) -> bool
|
|
"""Get configured auto-delete flag for a given TempDirectory type,
|
|
default True.
|
|
"""
|
|
return self._should_delete.get(kind, True)
|
|
|
|
|
|
_tempdir_registry = None # type: Optional[TempDirectoryTypeRegistry]
|
|
|
|
|
|
@contextmanager
|
|
def tempdir_registry():
|
|
# type: () -> Iterator[TempDirectoryTypeRegistry]
|
|
"""Provides a scoped global tempdir registry that can be used to dictate
|
|
whether directories should be deleted.
|
|
"""
|
|
global _tempdir_registry
|
|
old_tempdir_registry = _tempdir_registry
|
|
_tempdir_registry = TempDirectoryTypeRegistry()
|
|
try:
|
|
yield _tempdir_registry
|
|
finally:
|
|
_tempdir_registry = old_tempdir_registry
|
|
|
|
|
|
class _Default(object):
|
|
pass
|
|
|
|
|
|
_default = _Default()
|
|
|
|
|
|
class TempDirectory(object):
|
|
"""Helper class that owns and cleans up a temporary directory.
|
|
|
|
This class can be used as a context manager or as an OO representation of a
|
|
temporary directory.
|
|
|
|
Attributes:
|
|
path
|
|
Location to the created temporary directory
|
|
delete
|
|
Whether the directory should be deleted when exiting
|
|
(when used as a contextmanager)
|
|
|
|
Methods:
|
|
cleanup()
|
|
Deletes the temporary directory
|
|
|
|
When used as a context manager, if the delete attribute is True, on
|
|
exiting the context the temporary directory is deleted.
|
|
"""
|
|
|
|
def __init__(
|
|
self,
|
|
path=None, # type: Optional[str]
|
|
delete=_default, # type: Union[bool, None, _Default]
|
|
kind="temp", # type: str
|
|
globally_managed=False, # type: bool
|
|
):
|
|
super(TempDirectory, self).__init__()
|
|
|
|
if delete is _default:
|
|
if path is not None:
|
|
# If we were given an explicit directory, resolve delete option
|
|
# now.
|
|
delete = False
|
|
else:
|
|
# Otherwise, we wait until cleanup and see what
|
|
# tempdir_registry says.
|
|
delete = None
|
|
|
|
if path is None:
|
|
path = self._create(kind)
|
|
|
|
self._path = path
|
|
self._deleted = False
|
|
self.delete = delete
|
|
self.kind = kind
|
|
|
|
if globally_managed:
|
|
assert _tempdir_manager is not None
|
|
_tempdir_manager.enter_context(self)
|
|
|
|
@property
|
|
def path(self):
|
|
# type: () -> str
|
|
assert not self._deleted, (
|
|
"Attempted to access deleted path: {}".format(self._path)
|
|
)
|
|
return self._path
|
|
|
|
def __repr__(self):
|
|
# type: () -> str
|
|
return "<{} {!r}>".format(self.__class__.__name__, self.path)
|
|
|
|
def __enter__(self):
|
|
# type: (_T) -> _T
|
|
return self
|
|
|
|
def __exit__(self, exc, value, tb):
|
|
# type: (Any, Any, Any) -> None
|
|
if self.delete is not None:
|
|
delete = self.delete
|
|
elif _tempdir_registry:
|
|
delete = _tempdir_registry.get_delete(self.kind)
|
|
else:
|
|
delete = True
|
|
|
|
if delete:
|
|
self.cleanup()
|
|
|
|
def _create(self, kind):
|
|
# type: (str) -> str
|
|
"""Create a temporary directory and store its path in self.path
|
|
"""
|
|
# We realpath here because some systems have their default tmpdir
|
|
# symlinked to another directory. This tends to confuse build
|
|
# scripts, so we canonicalize the path by traversing potential
|
|
# symlinks here.
|
|
path = os.path.realpath(
|
|
tempfile.mkdtemp(prefix="pip-{}-".format(kind))
|
|
)
|
|
logger.debug("Created temporary directory: {}".format(path))
|
|
return path
|
|
|
|
def cleanup(self):
|
|
# type: () -> None
|
|
"""Remove the temporary directory created and reset state
|
|
"""
|
|
self._deleted = True
|
|
if os.path.exists(self._path):
|
|
rmtree(self._path)
|
|
|
|
|
|
class AdjacentTempDirectory(TempDirectory):
|
|
"""Helper class that creates a temporary directory adjacent to a real one.
|
|
|
|
Attributes:
|
|
original
|
|
The original directory to create a temp directory for.
|
|
path
|
|
After calling create() or entering, contains the full
|
|
path to the temporary directory.
|
|
delete
|
|
Whether the directory should be deleted when exiting
|
|
(when used as a contextmanager)
|
|
|
|
"""
|
|
# The characters that may be used to name the temp directory
|
|
# We always prepend a ~ and then rotate through these until
|
|
# a usable name is found.
|
|
# pkg_resources raises a different error for .dist-info folder
|
|
# with leading '-' and invalid metadata
|
|
LEADING_CHARS = "-~.=%0123456789"
|
|
|
|
def __init__(self, original, delete=None):
|
|
# type: (str, Optional[bool]) -> None
|
|
self.original = original.rstrip('/\\')
|
|
super(AdjacentTempDirectory, self).__init__(delete=delete)
|
|
|
|
@classmethod
|
|
def _generate_names(cls, name):
|
|
# type: (str) -> Iterator[str]
|
|
"""Generates a series of temporary names.
|
|
|
|
The algorithm replaces the leading characters in the name
|
|
with ones that are valid filesystem characters, but are not
|
|
valid package names (for both Python and pip definitions of
|
|
package).
|
|
"""
|
|
for i in range(1, len(name)):
|
|
for candidate in itertools.combinations_with_replacement(
|
|
cls.LEADING_CHARS, i - 1):
|
|
new_name = '~' + ''.join(candidate) + name[i:]
|
|
if new_name != name:
|
|
yield new_name
|
|
|
|
# If we make it this far, we will have to make a longer name
|
|
for i in range(len(cls.LEADING_CHARS)):
|
|
for candidate in itertools.combinations_with_replacement(
|
|
cls.LEADING_CHARS, i):
|
|
new_name = '~' + ''.join(candidate) + name
|
|
if new_name != name:
|
|
yield new_name
|
|
|
|
def _create(self, kind):
|
|
# type: (str) -> str
|
|
root, name = os.path.split(self.original)
|
|
for candidate in self._generate_names(name):
|
|
path = os.path.join(root, candidate)
|
|
try:
|
|
os.mkdir(path)
|
|
except OSError as ex:
|
|
# Continue if the name exists already
|
|
if ex.errno != errno.EEXIST:
|
|
raise
|
|
else:
|
|
path = os.path.realpath(path)
|
|
break
|
|
else:
|
|
# Final fallback on the default behavior.
|
|
path = os.path.realpath(
|
|
tempfile.mkdtemp(prefix="pip-{}-".format(kind))
|
|
)
|
|
|
|
logger.debug("Created temporary directory: {}".format(path))
|
|
return path
|