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63 lines
1.8 KiB
Python
63 lines
1.8 KiB
Python
"""
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Application data stored by virtualenv.
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"""
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from __future__ import absolute_import, unicode_literals
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import logging
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import os
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from argparse import Action, ArgumentError
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from appdirs import user_data_dir
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from .na import AppDataDisabled
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from .via_disk_folder import AppDataDiskFolder
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from .via_tempdir import TempAppData
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class AppDataAction(Action):
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def __call__(self, parser, namespace, values, option_string=None):
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folder = self._check_folder(values)
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if folder is None:
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raise ArgumentError("app data path {} is not valid".format(values))
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setattr(namespace, self.dest, AppDataDiskFolder(folder))
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@staticmethod
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def _check_folder(folder):
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folder = os.path.abspath(folder)
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if not os.path.exists(folder):
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try:
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os.makedirs(folder)
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logging.debug("created app data folder %s", folder)
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except OSError as exception:
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logging.info("could not create app data folder %s due to %r", folder, exception)
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return None
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write_enabled = os.access(folder, os.W_OK)
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if write_enabled:
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return folder
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logging.debug("app data folder %s has no write access", folder)
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return None
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@staticmethod
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def default():
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for folder in AppDataAction._app_data_candidates():
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folder = AppDataAction._check_folder(folder)
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if folder is not None:
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return AppDataDiskFolder(folder)
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return AppDataDisabled()
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@staticmethod
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def _app_data_candidates():
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key = str("VIRTUALENV_OVERRIDE_APP_DATA")
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if key in os.environ:
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yield os.environ[key]
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else:
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yield user_data_dir(appname="virtualenv", appauthor="pypa")
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__all__ = (
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"AppDataDiskFolder",
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"TempAppData",
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"AppDataAction",
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"AppDataDisabled",
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)
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