Word wrap

# title: Word wrap
# source: https://rosettacode.org/wiki/Word_wrap
# category: Rosetta Code
# difficulty: Intro
# summary: Wrap a paragraph with the standard greedy algorithm at two different column widths.
# tags: popular, text-processing, formatting, greedy
# vibe: 0.2

def word_wrap(text, width)
  words = text.split
  lines = []
  current = ""
  index = 0

  while index < words.size
    word = words[index]
    if current == ""
      current = word
    elsif current.length + 1 + word.length <= width
      current = current + " " + word
    else
      lines = lines + [current]
      current = word
    end
    index = index + 1
  end

  if current != ""
    lines = lines + [current]
  end

  lines
end

def sample_text
  "In olden times when wishing still helped one, there lived a king whose " +
    "daughters were all beautiful, but the youngest was so beautiful that the " +
    "sun itself, which has seen so much, was astonished whenever it shone in her face."
end

def run
  text = sample_text
  {
    width_32: word_wrap(text, 32),
    width_48: word_wrap(text, 48)
  }
end