Mercurial > repos > shellac > sam_consensus_v3

annotate env/lib/python3.9/site-packages/setuptools/config.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 import ast
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2 import io
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3 import os
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4 import sys
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5
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6 import warnings
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7 import functools
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8 import importlib
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9 from collections import defaultdict
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10 from functools import partial
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11 from functools import wraps
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12 import contextlib
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13
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14 from distutils.errors import DistutilsOptionError, DistutilsFileError
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15 from setuptools.extern.packaging.version import LegacyVersion, parse
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16 from setuptools.extern.packaging.specifiers import SpecifierSet
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17
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18
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19 class StaticModule:
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20 """
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21 Attempt to load the module by the name
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22 """
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23 def __init__(self, name):
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24 spec = importlib.util.find_spec(name)
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25 with open(spec.origin) as strm:
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26 src = strm.read()
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27 module = ast.parse(src)
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28 vars(self).update(locals())
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29 del self.self
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30
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31 def __getattr__(self, attr):
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32 try:
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33 return next(
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34 ast.literal_eval(statement.value)
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35 for statement in self.module.body
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36 if isinstance(statement, ast.Assign)
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37 for target in statement.targets
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38 if isinstance(target, ast.Name) and target.id == attr
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39 )
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40 except Exception as e:
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41 raise AttributeError(
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42 "{self.name} has no attribute {attr}".format(**locals())
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43 ) from e
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44
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45
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46 @contextlib.contextmanager
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47 def patch_path(path):
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48 """
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49 Add path to front of sys.path for the duration of the context.
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50 """
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51 try:
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52 sys.path.insert(0, path)
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53 yield
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54 finally:
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55 sys.path.remove(path)
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56
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57
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58 def read_configuration(
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59 filepath, find_others=False, ignore_option_errors=False):
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60 """Read given configuration file and returns options from it as a dict.
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61
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62 :param str|unicode filepath: Path to configuration file
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63 to get options from.
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64
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65 :param bool find_others: Whether to search for other configuration files
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66 which could be on in various places.
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67
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68 :param bool ignore_option_errors: Whether to silently ignore
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69 options, values of which could not be resolved (e.g. due to exceptions
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70 in directives such as file:, attr:, etc.).
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71 If False exceptions are propagated as expected.
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72
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73 :rtype: dict
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74 """
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75 from setuptools.dist import Distribution, _Distribution
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76
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77 filepath = os.path.abspath(filepath)
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78
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79 if not os.path.isfile(filepath):
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80 raise DistutilsFileError(
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81 'Configuration file %s does not exist.' % filepath)
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82
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83 current_directory = os.getcwd()
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84 os.chdir(os.path.dirname(filepath))
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85
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86 try:
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87 dist = Distribution()
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88
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89 filenames = dist.find_config_files() if find_others else []
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90 if filepath not in filenames:
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91 filenames.append(filepath)
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92
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93 _Distribution.parse_config_files(dist, filenames=filenames)
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94
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95 handlers = parse_configuration(
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96 dist, dist.command_options,
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97 ignore_option_errors=ignore_option_errors)
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98
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99 finally:
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100 os.chdir(current_directory)
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101
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102 return configuration_to_dict(handlers)
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103
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104
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105 def _get_option(target_obj, key):
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106 """
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107 Given a target object and option key, get that option from
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108 the target object, either through a get_{key} method or
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109 from an attribute directly.
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110 """
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111 getter_name = 'get_{key}'.format(**locals())
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112 by_attribute = functools.partial(getattr, target_obj, key)
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113 getter = getattr(target_obj, getter_name, by_attribute)
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114 return getter()
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115
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116
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117 def configuration_to_dict(handlers):
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118 """Returns configuration data gathered by given handlers as a dict.
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119
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120 :param list[ConfigHandler] handlers: Handlers list,
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121 usually from parse_configuration()
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122
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123 :rtype: dict
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124 """
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125 config_dict = defaultdict(dict)
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126
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127 for handler in handlers:
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128 for option in handler.set_options:
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129 value = _get_option(handler.target_obj, option)
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130 config_dict[handler.section_prefix][option] = value
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131
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132 return config_dict
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133
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134
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135 def parse_configuration(
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136 distribution, command_options, ignore_option_errors=False):
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137 """Performs additional parsing of configuration options
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138 for a distribution.
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139
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140 Returns a list of used option handlers.
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141
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142 :param Distribution distribution:
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143 :param dict command_options:
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144 :param bool ignore_option_errors: Whether to silently ignore
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145 options, values of which could not be resolved (e.g. due to exceptions
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146 in directives such as file:, attr:, etc.).
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147 If False exceptions are propagated as expected.
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148 :rtype: list
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149 """
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150 options = ConfigOptionsHandler(
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151 distribution, command_options, ignore_option_errors)
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152 options.parse()
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153
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154 meta = ConfigMetadataHandler(
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155 distribution.metadata, command_options, ignore_option_errors,
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156 distribution.package_dir)
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157 meta.parse()
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158
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159 return meta, options
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160
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161
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162 class ConfigHandler:
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163 """Handles metadata supplied in configuration files."""
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164
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165 section_prefix = None
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166 """Prefix for config sections handled by this handler.
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167 Must be provided by class heirs.
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168
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169 """
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170
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171 aliases = {}
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172 """Options aliases.
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173 For compatibility with various packages. E.g.: d2to1 and pbr.
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174 Note: `-` in keys is replaced with `_` by config parser.
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175
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176 """
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177
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178 def __init__(self, target_obj, options, ignore_option_errors=False):
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179 sections = {}
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180
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181 section_prefix = self.section_prefix
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182 for section_name, section_options in options.items():
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183 if not section_name.startswith(section_prefix):
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184 continue
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185
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186 section_name = section_name.replace(section_prefix, '').strip('.')
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187 sections[section_name] = section_options
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188
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189 self.ignore_option_errors = ignore_option_errors
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190 self.target_obj = target_obj
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191 self.sections = sections
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192 self.set_options = []
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193
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194 @property
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195 def parsers(self):
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196 """Metadata item name to parser function mapping."""
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197 raise NotImplementedError(
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198 '%s must provide .parsers property' % self.__class__.__name__)
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199
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200 def __setitem__(self, option_name, value):
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201 unknown = tuple()
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202 target_obj = self.target_obj
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203
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204 # Translate alias into real name.
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205 option_name = self.aliases.get(option_name, option_name)
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206
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207 current_value = getattr(target_obj, option_name, unknown)
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208
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209 if current_value is unknown:
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210 raise KeyError(option_name)
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211
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212 if current_value:
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213 # Already inhabited. Skipping.
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214 return
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215
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216 skip_option = False
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217 parser = self.parsers.get(option_name)
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218 if parser:
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219 try:
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220 value = parser(value)
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221
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222 except Exception:
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223 skip_option = True
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224 if not self.ignore_option_errors:
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225 raise
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226
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227 if skip_option:
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228 return
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229
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230 setter = getattr(target_obj, 'set_%s' % option_name, None)
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231 if setter is None:
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232 setattr(target_obj, option_name, value)
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233 else:
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234 setter(value)
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235
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236 self.set_options.append(option_name)
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237
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238 @classmethod
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239 def _parse_list(cls, value, separator=','):
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240 """Represents value as a list.
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241
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242 Value is split either by separator (defaults to comma) or by lines.
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243
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244 :param value:
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245 :param separator: List items separator character.
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246 :rtype: list
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247 """
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248 if isinstance(value, list): # _get_parser_compound case
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249 return value
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250
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251 if '\n' in value:
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252 value = value.splitlines()
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253 else:
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254 value = value.split(separator)
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255
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256 return [chunk.strip() for chunk in value if chunk.strip()]
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257
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258 @classmethod
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259 def _parse_dict(cls, value):
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260 """Represents value as a dict.
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261
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262 :param value:
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263 :rtype: dict
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264 """
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265 separator = '='
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266 result = {}
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267 for line in cls._parse_list(value):
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268 key, sep, val = line.partition(separator)
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269 if sep != separator:
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270 raise DistutilsOptionError(
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271 'Unable to parse option value to dict: %s' % value)
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272 result[key.strip()] = val.strip()
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273
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274 return result
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275
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276 @classmethod
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277 def _parse_bool(cls, value):
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278 """Represents value as boolean.
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279
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280 :param value:
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281 :rtype: bool
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282 """
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283 value = value.lower()
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284 return value in ('1', 'true', 'yes')
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285
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286 @classmethod
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287 def _exclude_files_parser(cls, key):
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288 """Returns a parser function to make sure field inputs
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289 are not files.
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290
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291 Parses a value after getting the key so error messages are
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292 more informative.
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293
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294 :param key:
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295 :rtype: callable
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296 """
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297 def parser(value):
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298 exclude_directive = 'file:'
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299 if value.startswith(exclude_directive):
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300 raise ValueError(
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301 'Only strings are accepted for the {0} field, '
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302 'files are not accepted'.format(key))
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303 return value
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304 return parser
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305
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306 @classmethod
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307 def _parse_file(cls, value):
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308 """Represents value as a string, allowing including text
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309 from nearest files using `file:` directive.
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310
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311 Directive is sandboxed and won't reach anything outside
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312 directory with setup.py.
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313
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314 Examples:
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315 file: README.rst, CHANGELOG.md, src/file.txt
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316
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317 :param str value:
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318 :rtype: str
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319 """
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320 include_directive = 'file:'
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321
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322 if not isinstance(value, str):
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323 return value
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324
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325 if not value.startswith(include_directive):
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326 return value
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327
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328 spec = value[len(include_directive):]
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329 filepaths = (os.path.abspath(path.strip()) for path in spec.split(','))
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330 return '\n'.join(
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331 cls._read_file(path)
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332 for path in filepaths
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333 if (cls._assert_local(path) or True)
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334 and os.path.isfile(path)
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335 )
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336
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337 @staticmethod
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338 def _assert_local(filepath):
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339 if not filepath.startswith(os.getcwd()):
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340 raise DistutilsOptionError(
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341 '`file:` directive can not access %s' % filepath)
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342
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343 @staticmethod
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344 def _read_file(filepath):
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345 with io.open(filepath, encoding='utf-8') as f:
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346 return f.read()
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347
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348 @classmethod
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349 def _parse_attr(cls, value, package_dir=None):
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350 """Represents value as a module attribute.
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351
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352 Examples:
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353 attr: package.attr
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354 attr: package.module.attr
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355
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356 :param str value:
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357 :rtype: str
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358 """
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359 attr_directive = 'attr:'
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360 if not value.startswith(attr_directive):
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361 return value
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362
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363 attrs_path = value.replace(attr_directive, '').strip().split('.')
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364 attr_name = attrs_path.pop()
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365
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366 module_name = '.'.join(attrs_path)
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367 module_name = module_name or '__init__'
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368
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369 parent_path = os.getcwd()
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370 if package_dir:
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371 if attrs_path[0] in package_dir:
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372 # A custom path was specified for the module we want to import
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373 custom_path = package_dir[attrs_path[0]]
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374 parts = custom_path.rsplit('/', 1)
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375 if len(parts) > 1:
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376 parent_path = os.path.join(os.getcwd(), parts[0])
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377 module_name = parts[1]
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378 else:
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379 module_name = custom_path
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380 elif '' in package_dir:
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381 # A custom parent directory was specified for all root modules
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382 parent_path = os.path.join(os.getcwd(), package_dir[''])
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383
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384 with patch_path(parent_path):
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385 try:
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386 # attempt to load value statically
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387 return getattr(StaticModule(module_name), attr_name)
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388 except Exception:
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389 # fallback to simple import
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390 module = importlib.import_module(module_name)
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391
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392 return getattr(module, attr_name)
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393
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394 @classmethod
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395 def _get_parser_compound(cls, *parse_methods):
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396 """Returns parser function to represents value as a list.
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397
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398 Parses a value applying given methods one after another.
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399
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400 :param parse_methods:
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401 :rtype: callable
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402 """
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403 def parse(value):
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404 parsed = value
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405
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406 for method in parse_methods:
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407 parsed = method(parsed)
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408
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409 return parsed
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410
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411 return parse
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412
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413 @classmethod
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414 def _parse_section_to_dict(cls, section_options, values_parser=None):
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415 """Parses section options into a dictionary.
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416
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417 Optionally applies a given parser to values.
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418
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419 :param dict section_options:
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420 :param callable values_parser:
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421 :rtype: dict
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422 """
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423 value = {}
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424 values_parser = values_parser or (lambda val: val)
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425 for key, (_, val) in section_options.items():
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426 value[key] = values_parser(val)
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427 return value
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428
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429 def parse_section(self, section_options):
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430 """Parses configuration file section.
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431
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432 :param dict section_options:
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433 """
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434 for (name, (_, value)) in section_options.items():
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435 try:
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436 self[name] = value
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437
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438 except KeyError:
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439 pass # Keep silent for a new option may appear anytime.
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440
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441 def parse(self):
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442 """Parses configuration file items from one
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443 or more related sections.
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444
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445 """
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446 for section_name, section_options in self.sections.items():
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447
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448 method_postfix = ''
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449 if section_name: # [section.option] variant
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450 method_postfix = '_%s' % section_name
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451
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452 section_parser_method = getattr(
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453 self,
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454 # Dots in section names are translated into dunderscores.
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455 ('parse_section%s' % method_postfix).replace('.', '__'),
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456 None)
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457
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458 if section_parser_method is None:
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459 raise DistutilsOptionError(
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460 'Unsupported distribution option section: [%s.%s]' % (
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461 self.section_prefix, section_name))
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462
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463 section_parser_method(section_options)
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464
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465 def _deprecated_config_handler(self, func, msg, warning_class):
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466 """ this function will wrap around parameters that are deprecated
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467
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468 :param msg: deprecation message
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469 :param warning_class: class of warning exception to be raised
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470 :param func: function to be wrapped around
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471 """
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472 @wraps(func)
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473 def config_handler(*args, **kwargs):
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474 warnings.warn(msg, warning_class)
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475 return func(*args, **kwargs)
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476
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477 return config_handler
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478
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479
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480 class ConfigMetadataHandler(ConfigHandler):
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481
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482 section_prefix = 'metadata'
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483
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484 aliases = {
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485 'home_page': 'url',
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486 'summary': 'description',
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487 'classifier': 'classifiers',
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488 'platform': 'platforms',
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489 }
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490
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491 strict_mode = False
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492 """We need to keep it loose, to be partially compatible with
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493 `pbr` and `d2to1` packages which also uses `metadata` section.
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494
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495 """
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496
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497 def __init__(self, target_obj, options, ignore_option_errors=False,
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498 package_dir=None):
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499 super(ConfigMetadataHandler, self).__init__(target_obj, options,
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500 ignore_option_errors)
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501 self.package_dir = package_dir
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502
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503 @property
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504 def parsers(self):
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505 """Metadata item name to parser function mapping."""
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506 parse_list = self._parse_list
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507 parse_file = self._parse_file
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508 parse_dict = self._parse_dict
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509 exclude_files_parser = self._exclude_files_parser
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510
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511 return {
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512 'platforms': parse_list,
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513 'keywords': parse_list,
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514 'provides': parse_list,
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515 'requires': self._deprecated_config_handler(
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516 parse_list,
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517 "The requires parameter is deprecated, please use "
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518 "install_requires for runtime dependencies.",
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519 DeprecationWarning),
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520 'obsoletes': parse_list,
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521 'classifiers': self._get_parser_compound(parse_file, parse_list),
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522 'license': exclude_files_parser('license'),
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523 'license_files': parse_list,
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524 'description': parse_file,
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525 'long_description': parse_file,
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526 'version': self._parse_version,
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527 'project_urls': parse_dict,
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528 }
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529
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530 def _parse_version(self, value):
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531 """Parses `version` option value.
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532
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533 :param value:
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534 :rtype: str
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535
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536 """
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537 version = self._parse_file(value)
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538
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539 if version != value:
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540 version = version.strip()
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541 # Be strict about versions loaded from file because it's easy to
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542 # accidentally include newlines and other unintended content
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543 if isinstance(parse(version), LegacyVersion):
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544 tmpl = (
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545 'Version loaded from {value} does not '
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546 'comply with PEP 440: {version}'
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547 )
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548 raise DistutilsOptionError(tmpl.format(**locals()))
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549
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550 return version
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551
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552 version = self._parse_attr(value, self.package_dir)
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553
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554 if callable(version):
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555 version = version()
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556
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557 if not isinstance(version, str):
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558 if hasattr(version, '__iter__'):
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559 version = '.'.join(map(str, version))
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560 else:
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561 version = '%s' % version
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562
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563 return version
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564
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565
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566 class ConfigOptionsHandler(ConfigHandler):
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567
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568 section_prefix = 'options'
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569
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570 @property
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571 def parsers(self):
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572 """Metadata item name to parser function mapping."""
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573 parse_list = self._parse_list
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574 parse_list_semicolon = partial(self._parse_list, separator=';')
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575 parse_bool = self._parse_bool
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576 parse_dict = self._parse_dict
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577
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578 return {
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579 'zip_safe': parse_bool,
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580 'use_2to3': parse_bool,
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581 'include_package_data': parse_bool,
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582 'package_dir': parse_dict,
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583 'use_2to3_fixers': parse_list,
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584 'use_2to3_exclude_fixers': parse_list,
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585 'convert_2to3_doctests': parse_list,
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586 'scripts': parse_list,
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587 'eager_resources': parse_list,
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588 'dependency_links': parse_list,
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589 'namespace_packages': parse_list,
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590 'install_requires': parse_list_semicolon,
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591 'setup_requires': parse_list_semicolon,
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592 'tests_require': parse_list_semicolon,
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593 'packages': self._parse_packages,
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594 'entry_points': self._parse_file,
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595 'py_modules': parse_list,
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596 'python_requires': SpecifierSet,
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597 }
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598
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599 def _parse_packages(self, value):
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diff changeset
600 """Parses `packages` option value.
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601
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602 :param value:
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603 :rtype: list
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604 """
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605 find_directives = ['find:', 'find_namespace:']
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606 trimmed_value = value.strip()
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607
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608 if trimmed_value not in find_directives:
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609 return self._parse_list(value)
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610
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611 findns = trimmed_value == find_directives[1]
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612
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613 # Read function arguments from a dedicated section.
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614 find_kwargs = self.parse_section_packages__find(
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615 self.sections.get('packages.find', {}))
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616
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617 if findns:
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618 from setuptools import find_namespace_packages as find_packages
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619 else:
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620 from setuptools import find_packages
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621
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622 return find_packages(**find_kwargs)
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623
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624 def parse_section_packages__find(self, section_options):
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625 """Parses `packages.find` configuration file section.
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626
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627 To be used in conjunction with _parse_packages().
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628
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629 :param dict section_options:
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630 """
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631 section_data = self._parse_section_to_dict(
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632 section_options, self._parse_list)
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633
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634 valid_keys = ['where', 'include', 'exclude']
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635
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636 find_kwargs = dict(
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637 [(k, v) for k, v in section_data.items() if k in valid_keys and v])
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638
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639 where = find_kwargs.get('where')
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640 if where is not None:
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641 find_kwargs['where'] = where[0] # cast list to single val
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642
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643 return find_kwargs
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644
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645 def parse_section_entry_points(self, section_options):
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646 """Parses `entry_points` configuration file section.
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647
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648 :param dict section_options:
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649 """
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650 parsed = self._parse_section_to_dict(section_options, self._parse_list)
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651 self['entry_points'] = parsed
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652
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653 def _parse_package_data(self, section_options):
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654 parsed = self._parse_section_to_dict(section_options, self._parse_list)
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655
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656 root = parsed.get('*')
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657 if root:
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658 parsed[''] = root
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659 del parsed['*']
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660
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661 return parsed
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662
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663 def parse_section_package_data(self, section_options):
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664 """Parses `package_data` configuration file section.
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665
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666 :param dict section_options:
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667 """
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668 self['package_data'] = self._parse_package_data(section_options)
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669
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670 def parse_section_exclude_package_data(self, section_options):
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671 """Parses `exclude_package_data` configuration file section.
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672
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673 :param dict section_options:
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674 """
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675 self['exclude_package_data'] = self._parse_package_data(
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676 section_options)
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677
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678 def parse_section_extras_require(self, section_options):
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679 """Parses `extras_require` configuration file section.
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680
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681 :param dict section_options:
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682 """
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683 parse_list = partial(self._parse_list, separator=';')
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684 self['extras_require'] = self._parse_section_to_dict(
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685 section_options, parse_list)
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686
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687 def parse_section_data_files(self, section_options):
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688 """Parses `data_files` configuration file section.
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689
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690 :param dict section_options:
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691 """
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692 parsed = self._parse_section_to_dict(section_options, self._parse_list)
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693 self['data_files'] = [(k, v) for k, v in parsed.items()]