class RuboCop::Formatter::ClangStyleFormatter

def report_file(file, offenses)
  offenses.each { |offense| report_offense(file, offense) }
end

def report_highlighted_area(highlighted_area)
  space_area  = highlighted_area.source_buffer.slice(0...highlighted_area.begin_pos)
  source_area = highlighted_area.source
  output.puts("#{' ' * Unicode::DisplayWidth.of(space_area)}" \
              "#{'^' * Unicode::DisplayWidth.of(source_area)}")
end

def report_line(location)
  source_line = location.source_line
  if location.single_line?
    output.puts(source_line)
  else
    output.puts("#{source_line} #{yellow(ELLIPSES)}")
  end
end

def report_offense(file, offense)
  output.printf(
    "%<path>s:%<line>d:%<column>d: %<severity>s: %<message>s\n",
    path: cyan(smart_path(file)),
    line: offense.line,
    column: offense.real_column,
    severity: colored_severity_code(offense),
    message: message(offense)
  )
  begin
    return unless valid_line?(offense)
    report_line(offense.location)
    report_highlighted_area(offense.highlighted_area)
  rescue IndexError
    # range is not on a valid line; perhaps the source file is empty
  end
end

def valid_line?(offense)
  !offense.location.source_line.blank?
end