morseCodeLogic.js

/*
royalflush:science sent1nel$ node index.js http://www.facebook.com
1395511696652 Device(s) /dev/cu.usbmodem1411
1395511701611 Connected /dev/cu.usbmodem1411
1395511701611 Repl Initialized
>> Getting http://www.facebook.com...got it!
Attempting to encode 'Update Your Browser | Facebook'
Encoded title:
..- .--. -.. .- - . ....... -.-- --- ..- .-. ....... -... .-. --- .-- ... . .-. ....... ? ....... ..-. .- -.-. . -... --- --- -.-
..- .--. -.. .- - . ....... -.-- --- ..- .-. ....... -... .-. --- .-- ... . .-. .......   ....... ..-. .- -.-. . -... --- --- -.-
*/

var sendString = function(string) {
  // for each character in the string..
  var characters = string.split(' ');
  for (var k = 0; k < characters.length; k++) {
    queueCharacter(characters[k], characters[k + 1], !k);
  }
}

var queueCharacter = function(character, nextCharacter, first) {

  // unknown character. i've had errors with -s and |s in titles. eat them, ungracefully.
  if (character === '?') return process.stdout.write(' ');

  // queue up a space; it's simply a 7-unit off
  if (character === '.......') return queueSpace();

  // for each element in the character, queue up the appropriate action
  for (var k = 0; k < character.length; k++) {
    switch (character[k]) {
      case '.':
        queueDit();
      break;
      case '-':
        queueDah();
      break;
    }
    // if not the last element, queue up an inter-element gap
    if (k != character.length - 1) {
      queueElementGap();
    }
  }

  // queue a character gap if the next character isn't a space and isn't undefined
  if (nextCharacter !== '.......' && typeof nextCharacter !== 'undefined') {
    queueCharacterGap();
  }
  return false;
}