split text into words

split.js

var split_text;
split_text = function(text, max_line_size) {
  var current_line, current_line_length, lines, sum, w, word, words, _i, _len;
  if (max_line_size == null) {
    max_line_size = 30;
  }
  sum = function(arr) {
    var el, total, _i, _len;
    total = 0;
    for (_i = 0, _len = arr.length; _i < _len; _i++) {
      el = arr[_i];
      total += el;
    }
    return total;
  };
  words = text.split(' ');
  lines = [];
  current_line = [];
  for (_i = 0, _len = words.length; _i < _len; _i++) {
    word = words[_i];
    current_line_length = sum((function() {
      var _j, _len2, _results;
      _results = [];
      for (_j = 0, _len2 = current_line.length; _j < _len2; _j++) {
        w = current_line[_j];
        _results.push(w.length);
      }
      return _results;
    })());
    if (word.length + current_line_length > max_line_size) {
      lines.push(current_line);
      current_line = [word];
    } else {
      current_line.push(word);
    }
  }
  if (current_line.length != null) {
    lines.push(current_line);
  }
  return lines;
};