Ruby: Tweet Shortener

tweet_shortener

replacements = {
  "to" => '2',
  "two" => '2',
  "too" => '2',
  "for" => '4',
  "four" => '4',
  'be' => 'b',
  'you' => 'u',
  "at" => "@",
  "and" => "&"
}

tweets = [
  "Hey guys, can anyone teach me how to be cool? I really want to be the best at everything, you know what I mean? Tweeting is super fun you guys!!!!",
  "OMG you guys, you won't believe how sweet my kitten is. My kitten is like super cuddly and too cute to be believed right?",
  "I'm running out of example tweets for you guys, which is weird, because I'm a writer and this is just writing and I tweet all day. For real, you guys. For real.",
  "GUISEEEEE this is so fun! I'm tweeting for you guys and this tweet is SOOOO long it's gonna be way more than you would think twitter can handle, so shorten it up you know what I mean? I just can never tell how long to keep typing!"
]

def shorten_tweet(tweet, replacements)
  if tweet.length <= 140
    return tweet
  end

  new_tweet = []
  tweet.split().each do |word|
    # has_key? is the ruby way - stop thinking in perl
    new_tweet << (replacements[word.downcase] ? replacements[word.downcase] : word)
  end

  new_tweet.join(' ')[0, 140]
end

# Still doesn't work as far as uppercase letters but just stop for now
def shorten_tweet2(tweet, replacements)
  if tweet.length <= 140
    return tweet
  end

  replacements.keys.each do |key|
    mod_key = key.downcase.center(key.length + 2)
    tweet.gsub! mod_key, ' ' + replacements[key] + ' '
  end
  tweet[0, 140]
end

tweets.each do |tweet|
  puts shorten_tweet(tweet, replacements)
  puts shorten_tweet2(tweet, replacements)
end