class CLOC
  class CSVError < StandardError; end

  def initialize(cloc_csv)
    fail "Not a CSV: #{cloc_csv}" unless cloc_csv.is_a? CSV::Table
    @cloc_csv = cloc_csv
  end

  def language_counts
    @cloc_csv.map { |row|
      next if row.empty?
      language    = row["language"]
      sloc        = Integer(row["code"])
      file_count  = Integer(row["files"])
      LanguageCount.new(language, sloc, file_count)
    }.compact
  end

  LanguageCount = Struct.new(:language, :sloc, :file_count)
end