Class: RuboCop::TargetFinder

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

Overview

This class finds target files to inspect by scanning the directory tree and picking ruby files.

Instance Method Summary collapse

Constructor Details

#initialize(config_store, options = {}) ⇒ TargetFinder 



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# File 'lib/rubocop/target_finder.rb', line 9

def initialize(config_store, options = {})
  @config_store = config_store
  @options = options
end

Instance Method Details

#debug? ⇒ Boolean 



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# File 'lib/rubocop/target_finder.rb', line 18

def debug?
  @options[:debug]
end

#fail_fast? ⇒ Boolean 



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# File 'lib/rubocop/target_finder.rb', line 22

def fail_fast?
  @options[:fail_fast]
end

#find(args) ⇒ Array

Generate a list of target files by expanding globbing patterns (if any). If args is empty, recursively find all Ruby source files under the current directory



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# File 'lib/rubocop/target_finder.rb', line 30

def find(args)
  return target_files_in_dir if args.empty?

  files = []

  args.uniq.each do |arg|
    files += if File.directory?(arg)
               target_files_in_dir(arg.chomp(File::SEPARATOR))
             else
               process_explicit_path(arg)
             end
  end

  files.map { |f| File.expand_path(f) }.uniq
end

#find_files(base_dir, flags) ⇒ Object 



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# File 'lib/rubocop/target_finder.rb', line 83

def find_files(base_dir, flags)
  Dir.glob("#{base_dir}/**/*", flags).select { |path| FileTest.file?(path) }
end

#force_exclusion? ⇒ Boolean 



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# File 'lib/rubocop/target_finder.rb', line 14

def force_exclusion?
  @options[:force_exclusion]
end

#process_explicit_path(path) ⇒ Object 



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# File 'lib/rubocop/target_finder.rb', line 96

def process_explicit_path(path)
  files = if path.include?('*')
            Dir[path]
          else
            [path]
          end

  return files unless force_exclusion?

  files.reject do |file|
    config = @config_store.for(file)
    config.file_to_exclude?(file)
  end
end

#ruby_executable?(file) ⇒ Boolean 



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# File 'lib/rubocop/target_finder.rb', line 87

def ruby_executable?(file)
  return false unless File.extname(file).empty?
  first_line = File.open(file) { |f| f.readline }
  first_line =~ /#!.*ruby/
rescue EOFError, ArgumentError => e
  warn "Unprocessable file #{file}: #{e.class}, #{e.message}" if debug?
  false
end

#target_files_in_dir(base_dir = Dir.pwd) ⇒ Array

Finds all Ruby source files under the current or other supplied directory. A Ruby source file is defined as a file with the .rb extension or a file with no extension that has a ruby shebang line as its first line. It is possible to specify includes and excludes using the config file, so you can include other Ruby files like Rakefiles and gemspecs.



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# File 'lib/rubocop/target_finder.rb', line 55

def target_files_in_dir(base_dir = Dir.pwd)
  # Support Windows: Backslashes from command-line -> forward slashes
  if File::ALT_SEPARATOR
    base_dir.gsub!(File::ALT_SEPARATOR, File::SEPARATOR)
  end
  all_files = find_files(base_dir, File::FNM_DOTMATCH)
  hidden_files = Set.new(all_files - find_files(base_dir, 0))
  base_dir_config = @config_store.for(base_dir)

  target_files = all_files.select do |file|
    to_inspect?(file, hidden_files, base_dir_config)
  end

  # Most recently modified file first.
  target_files.sort_by! { |path| -File.mtime(path).to_i } if fail_fast?

  target_files
end

#to_inspect?(file, hidden_files, base_dir_config) ⇒ Boolean 



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# File 'lib/rubocop/target_finder.rb', line 74

def to_inspect?(file, hidden_files, base_dir_config)
  return false if base_dir_config.file_to_exclude?(file)
  unless hidden_files.include?(file)
    return true if File.extname(file) == '.rb'
    return true if ruby_executable?(file)
  end
  base_dir_config.file_to_include?(file)
end