iso639.js

#!/usr/bin/env node
var jsdom      = require('jsdom');

var wikipedia = 'http://en.wikipedia.org/wiki/List_of_ISO_639-1_codes';
var jquery    = 'http://code.jquery.com/jquery.js';

jsdom.env(wikipedia, [jquery], function (errors, window) {
    var $ = window.$;
    var tds = $('table[class="wikitable sortable"] > tr > td');
    if (tds.size() % 10 != 0) {
      throw new Error('Ehhh something went terribly wrong');
    }

    var languages = {};

    for (var i = 0, s = tds.size(); i < s; i += 10) {

      var family      = $(tds[i+1]).text();
      var name        = $(tds[i+2]).text();
      var nativeName  = $(tds[i+3]).text();
      var alpha1      = $(tds[i+4]).text();
      var alpha2t     = $(tds[i+5]).text();
      var alpha2b     = $(tds[i+6]).text();
      var alpha3      = $(tds[i+7]).text().split(/\s+/)[0];;
      var alpha6      = $(tds[i+8]).text();

      languages[alpha1] = {
        family     : family,
        name       : name,
        nativeName : nativeName,
      };
    }

    console.log('/* ISO 639-1 Codes');
    console.log(' * https://gist.github.com/4075450');
    console.log(' *', wikipedia);
    console.log(' */');
    console.log(JSON.stringify(languages, null, 2));
  }
);