Displays 7-segment digits

display.rb

#!/usr/bin/env ruby

# Example usage:
# $ cat <<EOS | this_script
# 16:47
# 23:59
# 00:08
# end
# EOS
#
# https://open.kattis.com/problems/display

digits = {
  1 => <<-EOS,
    +
    |
    |
    +
    |
    |
    +
  EOS
  2 => <<-EOS,
+---+
    |
    |
+---+
|    
|    
+---+
  EOS
  3 => <<-EOS,
+---+
    |
    |
+---+
    |
    |
+---+
  EOS
  4 => <<-EOS,
+   +
|   |
|   |
+---+
    |
    |
    +
  EOS
  5 => <<-EOS,
+---+
|    
|    
+---+
    |
    |
+---+
  EOS
  6 => <<-EOS,
+---+
|    
|    
+---+
|   |
|   |
+---+
  EOS
  7 => <<-EOS,
+---+
    |
    |
    +
    |
    |
    +
  EOS
  8 => <<-EOS,
+---+
|   |
|   |
+---+
|   |
|   |
+---+
  EOS
  9 => <<-EOS,
+---+
|   |
|   |
+---+
    |
    |
+---+
  EOS
  0 => <<-EOS,
+---+
|   |
|   |
+   +
|   |
|   |
+---+
  EOS
  -1 => <<-EOS,
 
 
o
 
o
 
 
  EOS
}

times = STDIN.readlines.map(&:chomp).select do |l|
  l != 'end'
end

times.each do |t|
  chars = t.split('')
  chars[chars.index(':')] = '-1'
  chars.map!(&:to_i)

  first, *rest = chars
  rest = rest.map { |key| digits[key].split("\n") }
  digits[first].split("\n").zip(*rest) do |digs|
    puts digs.join('  ')
  end

  puts
  puts
end

puts 'end'