#!/usr/bin/evn ruby

def parse_line remainder_of_line

  puts "Processing: #{remainder_of_line}"

  # Save a copy of the initial input for later comparison
  initial_snapshot = remainder_of_line.dup

  # Look for known pattern matches, removing them if found
  if remainder_of_line.gsub!(/^(d+) 0 -1 1 (d+) d+s*/, '')
    puts " - Matched format 1 - found: #{$1} - #{$2}nn"
  elsif remainder_of_line.gsub!(/^d+ 0 -1 2 (d+) d+s*/, '')
    puts " - Matched format 2 - found: #{$1}nn"

  ### More patterns here.
  end

  # If noting changed, then no matches were found.
  if initial_snapshot.eql? remainder_of_line
    puts " - Line still has data but no matches found. (Left with: #{remainder_of_line}nn"
  # Keep going if there is anything left.
  elsif !remainder_of_line.empty?
    parse_line remainder_of_line
  end

end


line = "11 0 -1 2 13560 2 11 0 -1 2 13564 2 11 0 -1 1 36880 106 91 0 -1 1 36881 106 36881 106 91 1 13556 2 36880 106 36880 106 11 1 734 11 0 -1 1 36884 106 91 0 -1 1 36885 106 36885 106 91 1 13556 2 36884 106 36884 106 11 1 735 13556 2 31 18 799 13556 2 31 25 799 "

parse_line line