class Airbrake::CodeHunk

def get_lines(file, start_line, end_line)
  return unless (cached_file = get_from_cache(file))
  lines = {}
  cached_file.with_index(1) do |l, i|
    next if i < start_line
    break if i > end_line
    lines[i] = l[0...MAX_LINE_LEN].rstrip
  end
  lines
end