Mercurial > repos > shellac > sam_consensus_v3

annotate env/lib/python3.9/site-packages/virtualenv/config/ini.py @ 0:4f3585e2f14b draft default tip

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"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author shellac
date Mon, 22 Mar 2021 18:12:50 +0000
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1 from __future__ import absolute_import, unicode_literals
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2
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3 import logging
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4 import os
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5
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6 from appdirs import user_config_dir
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7
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8 from virtualenv.info import PY3
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9 from virtualenv.util import ConfigParser
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10 from virtualenv.util.path import Path
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11 from virtualenv.util.six import ensure_str
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12
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13 from .convert import convert
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14
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15
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16 class IniConfig(object):
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17 VIRTUALENV_CONFIG_FILE_ENV_VAR = ensure_str("VIRTUALENV_CONFIG_FILE")
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18 STATE = {None: "failed to parse", True: "active", False: "missing"}
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19
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20 section = "virtualenv"
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21
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22 def __init__(self, env=None):
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23 env = os.environ if env is None else env
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24 config_file = env.get(self.VIRTUALENV_CONFIG_FILE_ENV_VAR, None)
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25 self.is_env_var = config_file is not None
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26 config_file = (
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27 Path(config_file)
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28 if config_file is not None
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29 else Path(user_config_dir(appname="virtualenv", appauthor="pypa")) / "virtualenv.ini"
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30 )
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31 self.config_file = config_file
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32 self._cache = {}
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33
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34 exception = None
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35 self.has_config_file = None
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36 try:
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37 self.has_config_file = self.config_file.exists()
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38 except OSError as exc:
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39 exception = exc
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40 else:
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41 if self.has_config_file:
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42 self.config_file = self.config_file.resolve()
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43 self.config_parser = ConfigParser.ConfigParser()
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44 try:
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45 self._load()
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46 self.has_virtualenv_section = self.config_parser.has_section(self.section)
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47 except Exception as exc:
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48 exception = exc
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49 if exception is not None:
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50 logging.error("failed to read config file %s because %r", config_file, exception)
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51
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52 def _load(self):
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53 with self.config_file.open("rt") as file_handler:
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54 reader = getattr(self.config_parser, "read_file" if PY3 else "readfp")
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55 reader(file_handler)
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56
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57 def get(self, key, as_type):
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58 cache_key = key, as_type
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59 if cache_key in self._cache:
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60 return self._cache[cache_key]
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61 # noinspection PyBroadException
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62 try:
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63 source = "file"
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64 raw_value = self.config_parser.get(self.section, key.lower())
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65 value = convert(raw_value, as_type, source)
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66 result = value, source
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67 except Exception:
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68 result = None
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69 self._cache[cache_key] = result
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70 return result
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71
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72 def __bool__(self):
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73 return bool(self.has_config_file) and bool(self.has_virtualenv_section)
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74
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75 @property
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76 def epilog(self):
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77 msg = "{}config file {} {} (change{} via env var {})"
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78 return msg.format(
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79 "\n",
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80 self.config_file,
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81 self.STATE[self.has_config_file],
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82 "d" if self.is_env_var else "",
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83 self.VIRTUALENV_CONFIG_FILE_ENV_VAR,
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84 )