pronounce.js

CmdUtils.CreateCommand({
  name: "pronounce",
  author: { name: "Walter Chang", email: "weihsiu@gmail.com" },
  license: "Creative Commons 3.0 (by nc)",
  description: "Pronounce a selected or typed English word",
  takes: {"word": noun_arb_text},
  preview: function(pblock, text) {
    var msg = 'Pronounces "${word}"';
    var subs = { word: this._pickWord(text.text) };
    pblock.innerHTML = CmdUtils.renderTemplate(msg, subs);
  },
  execute: function(text) {
    var word = this._pickWord(text.text);
    if (word != "") {
      displayMessage('Pronouncing "' + word + '"');
      this._pronounce(word);
    }
  },
  _pickWord: function(text) { return (text || CmdUtils.getSelection()).split(/\b/)[0]; },
  _pronounce: function(word) {
    function playSound(url) {
      var ioService = Components.classes["@mozilla.org/network/io-service;1"].getService(Components.interfaces.nsIIOService);
      var sound = Components.classes["@mozilla.org/sound;1"].createInstance(Components.interfaces.nsISound);
      sound.play(ioService.newURI(url, "", null));
    }
    function trim(s) {
      return s.replace(/^\s+|\s+$/g, "");  
    }
    jQuery.get("http://www.merriam-webster.com/dictionary/" + trim(word.toLowerCase()), null, function(content) {
      var matches = /'\/cgi-bin\/audio\.pl\?(.+?)=.+?'/g.exec(content);
      if (matches != null) {
        var soundFile = matches[1];
        playSound("http://cougar.eb.com/soundc11/" + soundFile[0] + "/" + soundFile);
      }
    });
  }
});