Mercurial > repos > shellac > guppy_basecaller

annotate env/lib/python3.7/site-packages/virtualenv/config/cli/parser.py @ 4:79f47841a781 draft

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"planemo upload commit 2a0fe2cc28b09e101d37293e53e82f61762262ec"
author shellac
date Thu, 14 May 2020 16:47:39 -0400
parents 26e78fe6e8c4
children
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1 from __future__ import absolute_import, unicode_literals
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2
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3 from argparse import SUPPRESS, ArgumentDefaultsHelpFormatter, ArgumentParser
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4 from collections import OrderedDict
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5
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6 from virtualenv.config.convert import get_type
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7
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8 from ..env_var import get_env_var
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9 from ..ini import IniConfig
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10
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11
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12 class VirtualEnvConfigParser(ArgumentParser):
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13 """
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14 Custom option parser which updates its defaults by checking the configuration files and environmental variables
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15 """
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16
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17 def __init__(self, options=None, *args, **kwargs):
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18 self.file_config = IniConfig()
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19 self.epilog_list = []
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20 kwargs["epilog"] = self.file_config.epilog
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21 kwargs["add_help"] = False
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22 kwargs["formatter_class"] = HelpFormatter
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23 kwargs["prog"] = "virtualenv"
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24 super(VirtualEnvConfigParser, self).__init__(*args, **kwargs)
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25 self._fixed = set()
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26 self._elements = None
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27 self._verbosity = None
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28 self._options = options
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29 self._interpreter = None
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30 self._app_data = None
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31
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32 def _fix_defaults(self):
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33 for action in self._actions:
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34 action_id = id(action)
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35 if action_id not in self._fixed:
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36 self._fix_default(action)
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37 self._fixed.add(action_id)
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38
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39 def _fix_default(self, action):
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40 if hasattr(action, "default") and hasattr(action, "dest") and action.default != SUPPRESS:
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41 as_type = get_type(action)
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42 names = OrderedDict((i.lstrip("-").replace("-", "_"), None) for i in action.option_strings)
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43 outcome = None
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44 for name in names:
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45 outcome = get_env_var(name, as_type)
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46 if outcome is not None:
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47 break
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48 if outcome is None and self.file_config:
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49 for name in names:
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50 outcome = self.file_config.get(name, as_type)
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51 if outcome is not None:
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52 break
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53 if outcome is not None:
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54 action.default, action.default_source = outcome
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55
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56 def enable_help(self):
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57 self._fix_defaults()
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58 self.add_argument("-h", "--help", action="help", default=SUPPRESS, help="show this help message and exit")
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59
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60 def parse_known_args(self, args=None, namespace=None):
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61 self._fix_defaults()
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62 return super(VirtualEnvConfigParser, self).parse_known_args(args, namespace=namespace)
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63
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64 def parse_args(self, args=None, namespace=None):
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65 self._fix_defaults()
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66 return super(VirtualEnvConfigParser, self).parse_args(args, namespace=namespace)
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67
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68
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69 class HelpFormatter(ArgumentDefaultsHelpFormatter):
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70 def __init__(self, prog):
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71 super(HelpFormatter, self).__init__(prog, max_help_position=32, width=240)
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72
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73 def _get_help_string(self, action):
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74 # noinspection PyProtectedMember
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75 text = super(HelpFormatter, self)._get_help_string(action)
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76 if hasattr(action, "default_source"):
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77 default = " (default: %(default)s)"
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78 if text.endswith(default):
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79 text = "{} (default: %(default)s -> from %(default_source)s)".format(text[: -len(default)])
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80 return text