class Rubycritic::SourceLocator

def deduplicate_symlinks(path_list)
  # sort the symlinks to the end so files are preferred
  path_list.sort_by! { |path| File.symlink?(path.cleanpath) ? "z" : "a" }
  if defined?(JRUBY_VERSION)
    require "java"
    path_list.uniq! do |path|
      java.io.File.new(path.realpath.to_s).canonical_path
    end
  else
    path_list.uniq!(&:realpath)
  end
end

def expand_paths
  path_list = @initial_paths.flat_map do |path|
    if File.directory?(path)
      Pathname.glob(File.join(path, RUBY_FILES))
    elsif File.exist?(path) && File.extname(path) == RUBY_EXTENSION
      Pathname.new(path)
    end
  end.compact
  deduplicate_symlinks(path_list) if Config.deduplicate_symlinks
  path_list.map(&:cleanpath)
end

def initialize(paths)
  @initial_paths = Array(paths)
end

def pathnames
  @pathnames ||= expand_paths
end

def paths
  @paths ||= pathnames.map(&:to_s)
end