Mercurial > repos > shellac > guppy_basecaller

annotate env/lib/python3.7/site-packages/setuptools/config.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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0
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1 from __future__ import absolute_import, unicode_literals
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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 from collections import defaultdict
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9 from functools import partial
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10 from functools import wraps
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11 from importlib import import_module
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12
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13 from distutils.errors import DistutilsOptionError, DistutilsFileError
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14 from setuptools.extern.packaging.version import LegacyVersion, parse
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15 from setuptools.extern.six import string_types, PY3
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16
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17
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18 __metaclass__ = type
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19
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20
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21 def read_configuration(
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22 filepath, find_others=False, ignore_option_errors=False):
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23 """Read given configuration file and returns options from it as a dict.
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24
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25 :param str|unicode filepath: Path to configuration file
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26 to get options from.
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27
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28 :param bool find_others: Whether to search for other configuration files
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29 which could be on in various places.
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30
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31 :param bool ignore_option_errors: Whether to silently ignore
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32 options, values of which could not be resolved (e.g. due to exceptions
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33 in directives such as file:, attr:, etc.).
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34 If False exceptions are propagated as expected.
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35
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36 :rtype: dict
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37 """
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38 from setuptools.dist import Distribution, _Distribution
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39
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40 filepath = os.path.abspath(filepath)
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41
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42 if not os.path.isfile(filepath):
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43 raise DistutilsFileError(
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44 'Configuration file %s does not exist.' % filepath)
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45
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46 current_directory = os.getcwd()
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47 os.chdir(os.path.dirname(filepath))
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48
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49 try:
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50 dist = Distribution()
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51
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52 filenames = dist.find_config_files() if find_others else []
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53 if filepath not in filenames:
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54 filenames.append(filepath)
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55
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56 _Distribution.parse_config_files(dist, filenames=filenames)
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57
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58 handlers = parse_configuration(
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59 dist, dist.command_options,
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60 ignore_option_errors=ignore_option_errors)
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61
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62 finally:
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63 os.chdir(current_directory)
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64
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65 return configuration_to_dict(handlers)
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66
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67
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68 def _get_option(target_obj, key):
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69 """
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70 Given a target object and option key, get that option from
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71 the target object, either through a get_{key} method or
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72 from an attribute directly.
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73 """
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74 getter_name = 'get_{key}'.format(**locals())
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75 by_attribute = functools.partial(getattr, target_obj, key)
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76 getter = getattr(target_obj, getter_name, by_attribute)
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77 return getter()
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78
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79
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80 def configuration_to_dict(handlers):
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81 """Returns configuration data gathered by given handlers as a dict.
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82
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83 :param list[ConfigHandler] handlers: Handlers list,
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84 usually from parse_configuration()
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85
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86 :rtype: dict
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87 """
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88 config_dict = defaultdict(dict)
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89
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90 for handler in handlers:
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91 for option in handler.set_options:
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92 value = _get_option(handler.target_obj, option)
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93 config_dict[handler.section_prefix][option] = value
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94
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95 return config_dict
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96
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97
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98 def parse_configuration(
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99 distribution, command_options, ignore_option_errors=False):
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100 """Performs additional parsing of configuration options
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101 for a distribution.
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102
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103 Returns a list of used option handlers.
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104
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105 :param Distribution distribution:
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106 :param dict command_options:
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107 :param bool ignore_option_errors: Whether to silently ignore
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108 options, values of which could not be resolved (e.g. due to exceptions
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109 in directives such as file:, attr:, etc.).
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110 If False exceptions are propagated as expected.
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111 :rtype: list
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112 """
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113 options = ConfigOptionsHandler(
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114 distribution, command_options, ignore_option_errors)
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115 options.parse()
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116
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117 meta = ConfigMetadataHandler(
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118 distribution.metadata, command_options, ignore_option_errors,
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119 distribution.package_dir)
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120 meta.parse()
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121
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122 return meta, options
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123
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124
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125 class ConfigHandler:
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126 """Handles metadata supplied in configuration files."""
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127
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128 section_prefix = None
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129 """Prefix for config sections handled by this handler.
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130 Must be provided by class heirs.
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131
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132 """
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133
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134 aliases = {}
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135 """Options aliases.
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136 For compatibility with various packages. E.g.: d2to1 and pbr.
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137 Note: `-` in keys is replaced with `_` by config parser.
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138
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139 """
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140
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141 def __init__(self, target_obj, options, ignore_option_errors=False):
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142 sections = {}
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143
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144 section_prefix = self.section_prefix
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145 for section_name, section_options in options.items():
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146 if not section_name.startswith(section_prefix):
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147 continue
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148
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149 section_name = section_name.replace(section_prefix, '').strip('.')
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150 sections[section_name] = section_options
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151
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152 self.ignore_option_errors = ignore_option_errors
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153 self.target_obj = target_obj
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154 self.sections = sections
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155 self.set_options = []
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156
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157 @property
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158 def parsers(self):
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159 """Metadata item name to parser function mapping."""
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160 raise NotImplementedError(
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161 '%s must provide .parsers property' % self.__class__.__name__)
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162
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163 def __setitem__(self, option_name, value):
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164 unknown = tuple()
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165 target_obj = self.target_obj
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166
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167 # Translate alias into real name.
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168 option_name = self.aliases.get(option_name, option_name)
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169
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170 current_value = getattr(target_obj, option_name, unknown)
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171
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172 if current_value is unknown:
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173 raise KeyError(option_name)
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174
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175 if current_value:
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176 # Already inhabited. Skipping.
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177 return
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178
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179 skip_option = False
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180 parser = self.parsers.get(option_name)
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181 if parser:
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182 try:
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183 value = parser(value)
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184
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185 except Exception:
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186 skip_option = True
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187 if not self.ignore_option_errors:
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188 raise
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189
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190 if skip_option:
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191 return
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192
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193 setter = getattr(target_obj, 'set_%s' % option_name, None)
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194 if setter is None:
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195 setattr(target_obj, option_name, value)
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196 else:
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197 setter(value)
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198
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199 self.set_options.append(option_name)
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200
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201 @classmethod
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202 def _parse_list(cls, value, separator=','):
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203 """Represents value as a list.
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204
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205 Value is split either by separator (defaults to comma) or by lines.
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206
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207 :param value:
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208 :param separator: List items separator character.
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209 :rtype: list
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210 """
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211 if isinstance(value, list): # _get_parser_compound case
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212 return value
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213
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214 if '\n' in value:
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215 value = value.splitlines()
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216 else:
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217 value = value.split(separator)
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218
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219 return [chunk.strip() for chunk in value if chunk.strip()]
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220
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221 @classmethod
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222 def _parse_dict(cls, value):
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223 """Represents value as a dict.
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224
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225 :param value:
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226 :rtype: dict
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227 """
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228 separator = '='
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229 result = {}
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230 for line in cls._parse_list(value):
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231 key, sep, val = line.partition(separator)
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232 if sep != separator:
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233 raise DistutilsOptionError(
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234 'Unable to parse option value to dict: %s' % value)
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235 result[key.strip()] = val.strip()
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236
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237 return result
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238
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239 @classmethod
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240 def _parse_bool(cls, value):
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241 """Represents value as boolean.
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242
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243 :param value:
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244 :rtype: bool
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245 """
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246 value = value.lower()
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247 return value in ('1', 'true', 'yes')
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248
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249 @classmethod
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250 def _exclude_files_parser(cls, key):
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251 """Returns a parser function to make sure field inputs
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252 are not files.
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253
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254 Parses a value after getting the key so error messages are
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255 more informative.
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256
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257 :param key:
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258 :rtype: callable
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259 """
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260 def parser(value):
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261 exclude_directive = 'file:'
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262 if value.startswith(exclude_directive):
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263 raise ValueError(
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264 'Only strings are accepted for the {0} field, '
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265 'files are not accepted'.format(key))
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266 return value
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267 return parser
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268
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269 @classmethod
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270 def _parse_file(cls, value):
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271 """Represents value as a string, allowing including text
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272 from nearest files using `file:` directive.
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273
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274 Directive is sandboxed and won't reach anything outside
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275 directory with setup.py.
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276
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277 Examples:
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278 file: README.rst, CHANGELOG.md, src/file.txt
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279
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280 :param str value:
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281 :rtype: str
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282 """
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283 include_directive = 'file:'
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284
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285 if not isinstance(value, string_types):
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286 return value
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287
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288 if not value.startswith(include_directive):
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289 return value
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290
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291 spec = value[len(include_directive):]
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292 filepaths = (os.path.abspath(path.strip()) for path in spec.split(','))
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293 return '\n'.join(
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294 cls._read_file(path)
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295 for path in filepaths
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296 if (cls._assert_local(path) or True)
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297 and os.path.isfile(path)
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298 )
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299
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300 @staticmethod
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301 def _assert_local(filepath):
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302 if not filepath.startswith(os.getcwd()):
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303 raise DistutilsOptionError(
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304 '`file:` directive can not access %s' % filepath)
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305
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306 @staticmethod
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307 def _read_file(filepath):
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308 with io.open(filepath, encoding='utf-8') as f:
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309 return f.read()
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310
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311 @classmethod
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312 def _parse_attr(cls, value, package_dir=None):
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313 """Represents value as a module attribute.
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314
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315 Examples:
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316 attr: package.attr
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317 attr: package.module.attr
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318
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319 :param str value:
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320 :rtype: str
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321 """
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322 attr_directive = 'attr:'
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323 if not value.startswith(attr_directive):
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324 return value
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325
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326 attrs_path = value.replace(attr_directive, '').strip().split('.')
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327 attr_name = attrs_path.pop()
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328
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329 module_name = '.'.join(attrs_path)
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330 module_name = module_name or '__init__'
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331
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332 parent_path = os.getcwd()
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333 if package_dir:
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334 if attrs_path[0] in package_dir:
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335 # A custom path was specified for the module we want to import
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336 custom_path = package_dir[attrs_path[0]]
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337 parts = custom_path.rsplit('/', 1)
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338 if len(parts) > 1:
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339 parent_path = os.path.join(os.getcwd(), parts[0])
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340 module_name = parts[1]
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341 else:
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342 module_name = custom_path
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343 elif '' in package_dir:
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344 # A custom parent directory was specified for all root modules
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345 parent_path = os.path.join(os.getcwd(), package_dir[''])
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346 sys.path.insert(0, parent_path)
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347 try:
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348 module = import_module(module_name)
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349 value = getattr(module, attr_name)
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350
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351 finally:
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352 sys.path = sys.path[1:]
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353
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354 return value
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355
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356 @classmethod
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357 def _get_parser_compound(cls, *parse_methods):
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358 """Returns parser function to represents value as a list.
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359
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360 Parses a value applying given methods one after another.
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361
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362 :param parse_methods:
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363 :rtype: callable
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364 """
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365 def parse(value):
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366 parsed = value
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367
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368 for method in parse_methods:
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369 parsed = method(parsed)
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370
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371 return parsed
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372
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373 return parse
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374
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375 @classmethod
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376 def _parse_section_to_dict(cls, section_options, values_parser=None):
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377 """Parses section options into a dictionary.
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378
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379 Optionally applies a given parser to values.
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380
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381 :param dict section_options:
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382 :param callable values_parser:
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383 :rtype: dict
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384 """
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385 value = {}
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386 values_parser = values_parser or (lambda val: val)
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387 for key, (_, val) in section_options.items():
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388 value[key] = values_parser(val)
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389 return value
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390
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391 def parse_section(self, section_options):
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392 """Parses configuration file section.
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393
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394 :param dict section_options:
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395 """
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396 for (name, (_, value)) in section_options.items():
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397 try:
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diff changeset
398 self[name] = value
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399
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400 except KeyError:
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401 pass # Keep silent for a new option may appear anytime.
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402
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403 def parse(self):
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404 """Parses configuration file items from one
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405 or more related sections.
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406
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407 """
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408 for section_name, section_options in self.sections.items():
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409
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410 method_postfix = ''
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411 if section_name: # [section.option] variant
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412 method_postfix = '_%s' % section_name
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413
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414 section_parser_method = getattr(
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415 self,
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416 # Dots in section names are translated into dunderscores.
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417 ('parse_section%s' % method_postfix).replace('.', '__'),
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418 None)
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419
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420 if section_parser_method is None:
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421 raise DistutilsOptionError(
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422 'Unsupported distribution option section: [%s.%s]' % (
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423 self.section_prefix, section_name))
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424
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425 section_parser_method(section_options)
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426
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427 def _deprecated_config_handler(self, func, msg, warning_class):
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428 """ this function will wrap around parameters that are deprecated
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429
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430 :param msg: deprecation message
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431 :param warning_class: class of warning exception to be raised
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432 :param func: function to be wrapped around
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433 """
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434 @wraps(func)
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435 def config_handler(*args, **kwargs):
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436 warnings.warn(msg, warning_class)
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437 return func(*args, **kwargs)
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438
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439 return config_handler
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440
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441
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442 class ConfigMetadataHandler(ConfigHandler):
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443
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444 section_prefix = 'metadata'
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445
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446 aliases = {
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447 'home_page': 'url',
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448 'summary': 'description',
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449 'classifier': 'classifiers',
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450 'platform': 'platforms',
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451 }
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452
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453 strict_mode = False
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454 """We need to keep it loose, to be partially compatible with
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455 `pbr` and `d2to1` packages which also uses `metadata` section.
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456
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457 """
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458
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459 def __init__(self, target_obj, options, ignore_option_errors=False,
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460 package_dir=None):
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461 super(ConfigMetadataHandler, self).__init__(target_obj, options,
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462 ignore_option_errors)
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463 self.package_dir = package_dir
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464
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465 @property
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466 def parsers(self):
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467 """Metadata item name to parser function mapping."""
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468 parse_list = self._parse_list
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469 parse_file = self._parse_file
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470 parse_dict = self._parse_dict
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471 exclude_files_parser = self._exclude_files_parser
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472
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473 return {
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474 'platforms': parse_list,
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475 'keywords': parse_list,
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476 'provides': parse_list,
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477 'requires': self._deprecated_config_handler(
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478 parse_list,
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diff changeset
479 "The requires parameter is deprecated, please use "
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480 "install_requires for runtime dependencies.",
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481 DeprecationWarning),
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482 'obsoletes': parse_list,
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483 'classifiers': self._get_parser_compound(parse_file, parse_list),
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484 'license': exclude_files_parser('license'),
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485 'description': parse_file,
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486 'long_description': parse_file,
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487 'version': self._parse_version,
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488 'project_urls': parse_dict,
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489 }
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490
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491 def _parse_version(self, value):
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diff changeset
492 """Parses `version` option value.
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493
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494 :param value:
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495 :rtype: str
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496
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497 """
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498 version = self._parse_file(value)
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499
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500 if version != value:
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501 version = version.strip()
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502 # Be strict about versions loaded from file because it's easy to
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503 # accidentally include newlines and other unintended content
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504 if isinstance(parse(version), LegacyVersion):
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505 tmpl = (
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506 'Version loaded from {value} does not '
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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507 'comply with PEP 440: {version}'
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508 )
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509 raise DistutilsOptionError(tmpl.format(**locals()))
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510
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511 return version
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512
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513 version = self._parse_attr(value, self.package_dir)
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514
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515 if callable(version):
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516 version = version()
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517
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518 if not isinstance(version, string_types):
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519 if hasattr(version, '__iter__'):
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520 version = '.'.join(map(str, version))
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521 else:
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522 version = '%s' % version
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523
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524 return version
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525
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526
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527 class ConfigOptionsHandler(ConfigHandler):
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528
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529 section_prefix = 'options'
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530
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531 @property
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532 def parsers(self):
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533 """Metadata item name to parser function mapping."""
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534 parse_list = self._parse_list
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535 parse_list_semicolon = partial(self._parse_list, separator=';')
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536 parse_bool = self._parse_bool
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537 parse_dict = self._parse_dict
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538
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539 return {
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540 'zip_safe': parse_bool,
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541 'use_2to3': parse_bool,
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542 'include_package_data': parse_bool,
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543 'package_dir': parse_dict,
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544 'use_2to3_fixers': parse_list,
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545 'use_2to3_exclude_fixers': parse_list,
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546 'convert_2to3_doctests': parse_list,
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547 'scripts': parse_list,
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548 'eager_resources': parse_list,
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549 'dependency_links': parse_list,
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550 'namespace_packages': parse_list,
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551 'install_requires': parse_list_semicolon,
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552 'setup_requires': parse_list_semicolon,
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553 'tests_require': parse_list_semicolon,
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554 'packages': self._parse_packages,
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555 'entry_points': self._parse_file,
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556 'py_modules': parse_list,
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557 }
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558
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559 def _parse_packages(self, value):
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560 """Parses `packages` option value.
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561
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562 :param value:
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563 :rtype: list
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564 """
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565 find_directives = ['find:', 'find_namespace:']
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566 trimmed_value = value.strip()
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567
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568 if trimmed_value not in find_directives:
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569 return self._parse_list(value)
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570
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571 findns = trimmed_value == find_directives[1]
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572 if findns and not PY3:
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573 raise DistutilsOptionError(
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574 'find_namespace: directive is unsupported on Python < 3.3')
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575
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576 # Read function arguments from a dedicated section.
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577 find_kwargs = self.parse_section_packages__find(
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578 self.sections.get('packages.find', {}))
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579
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580 if findns:
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581 from setuptools import find_namespace_packages as find_packages
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582 else:
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583 from setuptools import find_packages
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584
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585 return find_packages(**find_kwargs)
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586
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587 def parse_section_packages__find(self, section_options):
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588 """Parses `packages.find` configuration file section.
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589
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590 To be used in conjunction with _parse_packages().
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591
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592 :param dict section_options:
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593 """
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594 section_data = self._parse_section_to_dict(
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595 section_options, self._parse_list)
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596
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597 valid_keys = ['where', 'include', 'exclude']
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598
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599 find_kwargs = dict(
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600 [(k, v) for k, v in section_data.items() if k in valid_keys and v])
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601
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602 where = find_kwargs.get('where')
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603 if where is not None:
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604 find_kwargs['where'] = where[0] # cast list to single val
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605
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606 return find_kwargs
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607
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608 def parse_section_entry_points(self, section_options):
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609 """Parses `entry_points` configuration file section.
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610
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611 :param dict section_options:
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612 """
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613 parsed = self._parse_section_to_dict(section_options, self._parse_list)
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614 self['entry_points'] = parsed
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615
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616 def _parse_package_data(self, section_options):
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617 parsed = self._parse_section_to_dict(section_options, self._parse_list)
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618
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619 root = parsed.get('*')
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620 if root:
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621 parsed[''] = root
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622 del parsed['*']
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623
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624 return parsed
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625
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626 def parse_section_package_data(self, section_options):
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627 """Parses `package_data` configuration file section.
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628
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629 :param dict section_options:
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630 """
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631 self['package_data'] = self._parse_package_data(section_options)
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632
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633 def parse_section_exclude_package_data(self, section_options):
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634 """Parses `exclude_package_data` configuration file section.
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635
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636 :param dict section_options:
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637 """
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638 self['exclude_package_data'] = self._parse_package_data(
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639 section_options)
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640
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641 def parse_section_extras_require(self, section_options):
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642 """Parses `extras_require` configuration file section.
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643
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644 :param dict section_options:
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645 """
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646 parse_list = partial(self._parse_list, separator=';')
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647 self['extras_require'] = self._parse_section_to_dict(
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648 section_options, parse_list)
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649
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650 def parse_section_data_files(self, section_options):
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651 """Parses `data_files` configuration file section.
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652
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653 :param dict section_options:
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654 """
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655 parsed = self._parse_section_to_dict(section_options, self._parse_list)
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656 self['data_files'] = [(k, v) for k, v in parsed.items()]