Mercurial > repos > guerler > springsuite

annotate planemo/lib/python3.7/site-packages/virtualenv/config/cli/parser.py @ 1:56ad4e20f292 draft

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"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author guerler
date Fri, 31 Jul 2020 00:32:28 -0400
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1
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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, Namespace
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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 VirtualEnvOptions(Namespace):
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13 def __init__(self, **kwargs):
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14 super(VirtualEnvOptions, self).__init__(**kwargs)
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15 self._src = None
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16 self._sources = {}
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17
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18 def set_src(self, key, value, src):
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19 setattr(self, key, value)
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20 if src.startswith("env var"):
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21 src = "env var"
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22 self._sources[key] = src
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23
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24 def __setattr__(self, key, value):
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25 if getattr(self, "_src", None) is not None:
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26 self._sources[key] = self._src
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27 super(VirtualEnvOptions, self).__setattr__(key, value)
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28
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29 def get_source(self, key):
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30 return self._sources.get(key)
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31
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32 @property
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33 def verbosity(self):
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34 if not hasattr(self, "verbose") and not hasattr(self, "quiet"):
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35 return None
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36 return max(self.verbose - self.quiet, 0)
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37
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38 def __repr__(self):
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39 return "{}({})".format(
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40 type(self).__name__,
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41 ", ".join("{}={}".format(k, v) for k, v in vars(self).items() if not k.startswith("_")),
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42 )
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43
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44
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45 class VirtualEnvConfigParser(ArgumentParser):
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46 """
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47 Custom option parser which updates its defaults by checking the configuration files and environmental variables
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48 """
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49
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50 def __init__(self, options=None, *args, **kwargs):
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51 self.file_config = IniConfig()
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52 self.epilog_list = []
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53 kwargs["epilog"] = self.file_config.epilog
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54 kwargs["add_help"] = False
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55 kwargs["formatter_class"] = HelpFormatter
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56 kwargs["prog"] = "virtualenv"
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57 super(VirtualEnvConfigParser, self).__init__(*args, **kwargs)
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58 self._fixed = set()
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59 if options is not None and not isinstance(options, VirtualEnvOptions):
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60 raise TypeError("options must be of type VirtualEnvOptions")
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61 self.options = VirtualEnvOptions() if options is None else options
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62 self._interpreter = None
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63 self._app_data = None
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64
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65 def _fix_defaults(self):
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66 for action in self._actions:
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67 action_id = id(action)
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68 if action_id not in self._fixed:
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69 self._fix_default(action)
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70 self._fixed.add(action_id)
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71
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72 def _fix_default(self, action):
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73 if hasattr(action, "default") and hasattr(action, "dest") and action.default != SUPPRESS:
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74 as_type = get_type(action)
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75 names = OrderedDict((i.lstrip("-").replace("-", "_"), None) for i in action.option_strings)
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76 outcome = None
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77 for name in names:
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78 outcome = get_env_var(name, as_type)
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79 if outcome is not None:
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80 break
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81 if outcome is None and self.file_config:
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82 for name in names:
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83 outcome = self.file_config.get(name, as_type)
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84 if outcome is not None:
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85 break
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86 if outcome is not None:
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87 action.default, action.default_source = outcome
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88 else:
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89 outcome = action.default, "default"
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90 self.options.set_src(action.dest, *outcome)
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91
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92 def enable_help(self):
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93 self._fix_defaults()
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94 self.add_argument("-h", "--help", action="help", default=SUPPRESS, help="show this help message and exit")
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95
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96 def parse_known_args(self, args=None, namespace=None):
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97 if namespace is None:
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98 namespace = self.options
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99 elif namespace is not self.options:
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100 raise ValueError("can only pass in parser.options")
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101 self._fix_defaults()
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102 self.options._src = "cli"
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103 try:
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104 return super(VirtualEnvConfigParser, self).parse_known_args(args, namespace=namespace)
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105 finally:
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106 self.options._src = None
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107
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108
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109 class HelpFormatter(ArgumentDefaultsHelpFormatter):
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110 def __init__(self, prog):
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111 super(HelpFormatter, self).__init__(prog, max_help_position=32, width=240)
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112
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113 def _get_help_string(self, action):
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114 # noinspection PyProtectedMember
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115 text = super(HelpFormatter, self)._get_help_string(action)
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116 if hasattr(action, "default_source"):
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117 default = " (default: %(default)s)"
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118 if text.endswith(default):
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119 text = "{} (default: %(default)s -> from %(default_source)s)".format(text[: -len(default)])
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120 return text