Mercurial > repos > shellac > guppy_basecaller

annotate env/lib/python3.7/site-packages/virtualenv/run/app_data.py @ 0:26e78fe6e8c4 draft

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"planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
author shellac
date Sat, 02 May 2020 07:14:21 -0400
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1 import logging
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2 import os
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3 from argparse import Action, ArgumentError
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4 from tempfile import mkdtemp
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5
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6 from appdirs import user_data_dir
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7
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8 from virtualenv.util.lock import ReentrantFileLock
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9 from virtualenv.util.path import safe_delete
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11
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12 class AppData(object):
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13 def __init__(self, folder):
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14 self.folder = ReentrantFileLock(folder)
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15 self.transient = False
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16
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17 def __repr__(self):
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18 return "{}".format(self.folder.path)
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19
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20 def clean(self):
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21 logging.debug("clean app data folder %s", self.folder.path)
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22 safe_delete(self.folder.path)
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23
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24 def close(self):
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25 """"""
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27
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28 class TempAppData(AppData):
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29 def __init__(self):
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30 super(TempAppData, self).__init__(folder=mkdtemp())
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31 self.transient = True
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32 logging.debug("created temporary app data folder %s", self.folder.path)
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33
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34 def close(self):
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35 logging.debug("remove temporary app data folder %s", self.folder.path)
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36 safe_delete(self.folder.path)
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37
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38
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39 class AppDataAction(Action):
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40 def __call__(self, parser, namespace, values, option_string=None):
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41 folder = self._check_folder(values)
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42 if folder is None:
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43 raise ArgumentError("app data path {} is not valid".format(values))
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44 setattr(namespace, self.dest, AppData(folder))
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45
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46 @staticmethod
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47 def _check_folder(folder):
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48 folder = os.path.abspath(folder)
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49 if not os.path.exists(folder):
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50 try:
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51 os.makedirs(folder)
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52 logging.debug("created app data folder %s", folder)
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53 except OSError as exception:
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54 logging.info("could not create app data folder %s due to %r", folder, exception)
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55 return None
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56 write_enabled = os.access(folder, os.W_OK)
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57 if write_enabled:
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58 return folder
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59 logging.debug("app data folder %s has no write access", folder)
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60 return None
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61
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62 @staticmethod
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63 def default():
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64 for folder in AppDataAction._app_data_candidates():
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65 folder = AppDataAction._check_folder(folder)
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66 if folder is not None:
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67 return AppData(folder)
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68 return None
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69
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70 @staticmethod
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71 def _app_data_candidates():
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72 key = str("VIRTUALENV_OVERRIDE_APP_DATA")
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73 if key in os.environ:
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74 yield os.environ[key]
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75 else:
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76 yield user_data_dir(appname="virtualenv", appauthor="pypa")
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77
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78
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79 __all__ = (
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80 "AppData",
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81 "TempAppData",
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82 "AppDataAction",
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83 )