class RuboCop::TargetFinder

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

Public Class Methods

new(config_store, options = {}) click to toggle source
# File lib/rubocop/target_finder.rb, line 9
def initialize(config_store, options = {})
  @config_store = config_store
  @options = options
end

Public Instance Methods

debug?() click to toggle source
# File lib/rubocop/target_finder.rb, line 18
def debug?
  @options[:debug]
end
excluded_dirs(base_dir) click to toggle source
# File lib/rubocop/target_finder.rb, line 111
def excluded_dirs(base_dir)
  all_cops_config = @config_store.for(base_dir).for_all_cops
  dir_tree_excludes = all_cops_config['Exclude'].select do |pattern|
    pattern.is_a?(String) && pattern.end_with?('/**/*')
  end
  dir_tree_excludes.map { |pattern| pattern.sub(%r{/\*\*/\*$}, '') }
end
fail_fast?() click to toggle source
# File lib/rubocop/target_finder.rb, line 22
def fail_fast?
  @options[:fail_fast]
end
find(args) click to toggle source

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 @return [Array] array of file paths

# 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) click to toggle source

Search for files recursively starting at the given base directory using the given flags that determine how the match is made. Excluded files will be removed later by the caller, but as an optimization #find_files removes the top level directories that are excluded in configuration in the normal way (dir /*).

# File lib/rubocop/target_finder.rb, line 88
def find_files(base_dir, flags)
  wanted_toplevel_dirs = toplevel_dirs(base_dir, flags) -
                         excluded_dirs(base_dir)
  wanted_toplevel_dirs.map! { |dir| dir << '/**/*' }

  pattern = if wanted_toplevel_dirs.empty?
              # We need this special case to avoid creating the pattern
              # /**/* which searches the entire file system.
              ["#{base_dir}/**/*"]
            else
              # Search the non-excluded top directories, but also add files
              # on the top level, which would otherwise not be found.
              wanted_toplevel_dirs.unshift("#{base_dir}/*")
            end
  Dir.glob(pattern, flags).select { |path| FileTest.file?(path) }
end
force_exclusion?() click to toggle source
# File lib/rubocop/target_finder.rb, line 14
def force_exclusion?
  @options[:force_exclusion]
end
process_explicit_path(path) click to toggle source
# File lib/rubocop/target_finder.rb, line 128
def process_explicit_path(path)
  files = path.include?('*') ? Dir[path] : [path]

  return files unless force_exclusion?

  files.reject do |file|
    config = @config_store.for(file)
    config.file_to_exclude?(file)
  end
end
ruby_executable?(file) click to toggle source
# File lib/rubocop/target_finder.rb, line 119
def ruby_executable?(file)
  return false unless File.extname(file).empty?
  first_line = File.open(file, &: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) click to toggle source

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. @param base_dir Root directory under which to search for

ruby source files

@return [Array] Array of filenames

# 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) click to toggle source
# 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
toplevel_dirs(base_dir, flags) click to toggle source
# File lib/rubocop/target_finder.rb, line 105
def toplevel_dirs(base_dir, flags)
  Dir.glob(File.join(base_dir, '*'), flags).select do |dir|
    File.directory?(dir) && !dir.end_with?('/.', '/..')
  end
end