Class: RuboCop::ConfigLoader

Inherits:
Object
  • Object
show all
Defined in:
lib/rubocop/config_loader.rb

Overview

This class represents the configuration of the RuboCop application and all its cops. A Config is associated with a YAML configuration file from which it was read. Several different Configs can be used during a run of the rubocop program, if files in several directories are inspected.

Constant Summary collapse

DOTFILE = 
'.rubocop.yml'.freeze
RUBOCOP_HOME = 
File.realpath(File.join(File.dirname(__FILE__), '..', '..'))
DEFAULT_FILE = 
File.join(RUBOCOP_HOME, 'config', 'default.yml')
AUTO_GENERATED_FILE = 
'.rubocop_todo.yml'.freeze

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.auto_gen_config ⇒ Object Also known as: auto_gen_config?

Returns the value of attribute auto_gen_config.



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# File 'lib/rubocop/config_loader.rb', line 20

def auto_gen_config
  @auto_gen_config
end

.debug ⇒ Object Also known as: debug?

Returns the value of attribute debug.



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# File 'lib/rubocop/config_loader.rb', line 20

def debug
  @debug
end

.default_configuration ⇒ Object 



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# File 'lib/rubocop/config_loader.rb', line 107

def default_configuration
  @default_configuration ||= begin
                               print 'Default ' if debug?
                               load_file(DEFAULT_FILE)
                             end
end

.root_level=(value) ⇒ Object (writeonly)

The upwards search is stopped at this level.



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# File 'lib/rubocop/config_loader.rb', line 21

def root_level=(value)
  @root_level = value
end

Class Method Details

.base_configs(path, inherit_from) ⇒ Object 



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# File 'lib/rubocop/config_loader.rb', line 66

def base_configs(path, inherit_from)
  configs = Array(inherit_from).compact.map do |f|
    if f =~ /\A#{URI.regexp(%w(http https))}\z/
      f = RemoteConfig.new(f).file
    else
      f = File.expand_path(f, File.dirname(path))

      if auto_gen_config?
        next if f.include?(AUTO_GENERATED_FILE)
        old_auto_config_file_warning if f.include?('rubocop-todo.yml')
      end

      print 'Inheriting ' if debug?
    end
    load_file(f)
  end

  configs.compact
end

.clear_options ⇒ Object 



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# File 'lib/rubocop/config_loader.rb', line 27

def clear_options
  @debug = @auto_gen_config = @root_level = nil
end

.configuration_file_for(target_dir) ⇒ Object

Returns the path of .rubocop.yml searching upwards in the directory structure starting at the given directory where the inspected file is. If no .rubocop.yml is found there, the user’s home directory is checked. If there’s no .rubocop.yml there either, the path to the default file is returned.



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# File 'lib/rubocop/config_loader.rb', line 91

def configuration_file_for(target_dir)
  config_files_in_path(target_dir).first || DEFAULT_FILE
end

.configuration_from_file(config_file) ⇒ Object 



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# File 'lib/rubocop/config_loader.rb', line 95

def configuration_from_file(config_file)
  config = load_file(config_file)
  return config if config_file == DEFAULT_FILE

  found_files = config_files_in_path(config_file)
  if found_files.any? && found_files.last != config_file
    print 'AllCops/Exclude ' if debug?
    config.add_excludes_from_higher_level(load_file(found_files.last))
  end
  merge_with_default(config, config_file)
end

.load_file(path) ⇒ Object 



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# File 'lib/rubocop/config_loader.rb', line 31

def load_file(path)
  path = File.absolute_path(path)
  hash = load_yaml_configuration(path)

  resolve_inheritance_from_gems(hash, hash.delete('inherit_gem'))
  resolve_inheritance(path, hash)

  Array(hash.delete('require')).each { |r| require(r) }

  hash.delete('inherit_from')
  config = Config.new(hash, path)

  config.deprecation_check do |deprecation_message|
    warn("#{path} - #{deprecation_message}")
  end

  config.add_missing_namespaces
  config.validate
  config.make_excludes_absolute
  config
end

.merge(base_hash, derived_hash) ⇒ Object

Return a recursive merge of two hashes. That is, a normal hash merge, with the addition that any value that is a hash, and occurs in both arguments, will also be merged. And so on.



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# File 'lib/rubocop/config_loader.rb', line 56

def merge(base_hash, derived_hash)
  result = base_hash.merge(derived_hash)
  keys_appearing_in_both = base_hash.keys & derived_hash.keys
  keys_appearing_in_both.each do |key|
    next unless base_hash[key].is_a?(Hash)
    result[key] = merge(base_hash[key], derived_hash[key])
  end
  result
end

.merge_with_default(config, config_file) ⇒ Object

Merges the given configuration with the default one. If AllCops:DisabledByDefault is true, it changes the Enabled params so that only cops from user configuration are enabled.



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# File 'lib/rubocop/config_loader.rb', line 117

def merge_with_default(config, config_file)
  configs =
    if config.key?('AllCops') && config['AllCops']['DisabledByDefault']
      disabled_default = transform(default_configuration) do |params|
        params.merge('Enabled' => false) # Overwrite with false.
      end
      enabled_user_config = transform(config) do |params|
        { 'Enabled' => true }.merge(params) # Set true if not set.
      end
      [disabled_default, enabled_user_config]
    else
      [default_configuration, config]
    end
  Config.new(merge(configs.first, configs.last), config_file)
end