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'
RUBOCOP_HOME = 
File.realpath(File.join(File.dirname(__FILE__), '..', '..'))
DEFAULT_FILE = 
File.join(RUBOCOP_HOME, 'config', 'default.yml')
AUTO_GENERATED_FILE = 
'rubocop-todo.yml'

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 19

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 19

def debug
  @debug
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 20

def root_level=(value)
  @root_level = value
end

Class Method Details

.add_excludes_from_higher_level(config, highest_config) ⇒ Object 



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# File 'lib/rubocop/config_loader.rb', line 103

def add_excludes_from_higher_level(config, highest_config)
  if highest_config['AllCops'] && highest_config['AllCops']['Excludes']
    config['AllCops'] ||= {}
    excludes = config['AllCops']['Excludes'] ||= []
    highest_config['AllCops']['Excludes'].each do |path|
      unless path.is_a?(Regexp) || path.start_with?('/')
        path = File.join(File.dirname(highest_config.loaded_path), path)
      end
      excludes << path unless excludes.include?(path)
    end
  end
end

.base_configs(path, inherit_from) ⇒ Object 



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# File 'lib/rubocop/config_loader.rb', line 69

def base_configs(path, inherit_from)
  Array(inherit_from).map do |f|
    f = File.join(File.dirname(path), f) unless f.start_with?('/')
    if auto_gen_config? && f.include?(AUTO_GENERATED_FILE)
      fail "Remove #{AUTO_GENERATED_FILE} from the current " +
        'configuration before generating it again.'
    end
    print 'Inheriting ' if debug?
    load_file(f)
  end
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 86

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 90

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/Excludes ' if debug?
    add_excludes_from_higher_level(config, load_file(found_files.last))
  end
  make_excludes_absolute(config)
  merge_with_default(config, config_file)
end

.default_configuration ⇒ Object 



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# File 'lib/rubocop/config_loader.rb', line 116

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

.load_file(path) ⇒ Object 



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# File 'lib/rubocop/config_loader.rb', line 25

def load_file(path)
  path = File.absolute_path(path)
  hash = YAML.load_file(path) || {}
  puts "configuration from #{path}" if debug?

  resolve_inheritance(path, hash)

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

.make_excludes_absolute(config) ⇒ Object 



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# File 'lib/rubocop/config_loader.rb', line 38

def make_excludes_absolute(config)
  if config['AllCops'] && config['AllCops']['Excludes']
    config['AllCops']['Excludes'].map! do |exclude_elem|
      if exclude_elem.is_a?(String) && !exclude_elem.start_with?('/')
        File.join(File.dirname(config.loaded_path), exclude_elem)
      else
        exclude_elem
      end
    end
  end
end

.merge(base_hash, derived_hash) ⇒ Object

Return an extended 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 (i.e., cop names), will also be merged.



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# File 'lib/rubocop/config_loader.rb', line 58

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|
    if base_hash[key].is_a?(Hash)
      result[key] = base_hash[key].merge(derived_hash[key])
    end
  end
  result
end

.merge_with_default(config, config_file) ⇒ Object 



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# File 'lib/rubocop/config_loader.rb', line 123

def merge_with_default(config, config_file)
  Config.new(merge(default_configuration, config), config_file)
end

.relative_path(path, base) ⇒ Object 



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# File 'lib/rubocop/config_loader.rb', line 50

def relative_path(path, base)
  path_name = Pathname.new(File.expand_path(path))
  path_name.relative_path_from(Pathname.new(base)).to_s
end