Madlibs Generator, Objectified

madlib.rb

@counter = 0

files = Dir.glob("*.madlib")

if files.size > 1
  puts "CHOOSE YOUR FILE:"
  x = 0
  files.each do |file|
    x += 1
    puts "#{x}. #{file}"
  end
  filename = files[gets.chomp.to_i - 1]
elsif files.size == 1
  filename = files[0]
else
  puts "No files found."
  exit
end

madlib_text = IO.read(filename)

parts_of_speech = %w(NOUN ADJECTIVE VERB)

parts_of_speech.each do |pos|

  word_matches = madlib_text.scan(/(#{pos}(\d+)?)/).map { |v| v[0] }

  unique_numbered_words = (word_matches - [pos]).uniq
  word_size = 0
  
  word_size += unique_numbered_words.size

  word_size += word_matches.select { |v| v == pos }.size

  unless word_size == 0
    puts "We're gonna need #{word_size} #{pos.downcase}s."
    @words = []

    word_size.times { @words << gets.chomp }

    unique_numbered_words.each do |word_text|
      madlib_text = madlib_text.gsub(word_text, @words.shift)
    end

    madlib_text = madlib_text.gsub(pos) do |v|
      @words.shift
    end
  end
end

puts madlib_text

mermaid

Look at this NOUN
Isn't it neat?
Wouldn't you think my NOUN's complete?
Wouldn't you think I'm the NOUN1
The NOUN1 who has ev'rything?
Look at this trove
NOUNs untold
How many NOUNs can one NOUN hold?
Lookin' around here you'd think
(Sure) she's got everything

I've got NOUNs and NOUNs aplenty
I've got NOUNs and NOUNs galore
(You want NOUNs?
I got twenty)
But who cares?
No ADJECTIVE deal
I want more

I wanna be where the NOUNs are
I wanna see
Wanna see 'em dancin'
Walkin' around on those
(Whad'ya call 'em?) oh - feet
Flippin' your fins you don't get too far
Legs are required for jumpin', dancin'
Strollin' along down a
(What's that word again?) street

Up where they walk
Up where they run
Up where they stay all day in the sun
Wanderin' free
Wish I could be
Part of that world

What would I give
If I could live
Outta these waters?
What would I pay
To spend a day
ADJECTIVE on the sand?
Betcha on land
They understand
Bet they don't VERB their daughters
ADJECTIVE ADJECTIVE women
Sick o' swimmin'
Ready to stand

And ready to VERB what the people know
VERB 'em my NOUNs
And get some answers
What's a NOUN and why does it
(What's the word?) burn?

When's it my turn?
Wouldn't I love
Love to explore that NOUN above?
Out of the sea
Wish I could be
Part of that world

Sup with that @counter on line 1? Looks unused.

@jqr whoops, I think that's a holdover from an early version of the code that was replaced by x later.