countries.js

//requirements:
//npm install cldr
//npm install csv
//npm install path

'use strict';

var cldr = require('cldr');
var csv = require('csv');
var path = require('path');

var output = [['Key']];
var index = {};

//we want use alpha-3 codes, so let's extract this mapping
function extractTerritoryCodes () {
  var territoryCodeMapping = {};
  var document = cldr.getDocument(
    path.resolve(cldr.cldrPath, 'common', 'supplemental', 'supplementalData.xml'));

  document.find('/supplementalData/codeMappings/territoryCodes')
    .forEach(function (territoryCodesNode) {
      var territoryCode = territoryCodesNode.attr('type').value();
      var alpha3 = territoryCodesNode.attr('alpha3');
      if (!alpha3) { return; }
      territoryCodeMapping[territoryCode] = alpha3.value();
    });
  return territoryCodeMapping;
}

function doit(locale) {
  var reqlen = output[0].length;
  output[0].push(locale === 'en' ? 'English' : locale);
  var countries = cldr.extractTerritoryDisplayNames(locale);
  var alpha3Mapping = extractTerritoryCodes();
  for (var i in countries) {
    if (i.match(/^\d*$/) || alpha3Mapping[i] === undefined) {
      delete countries[i]; //ignore continents
    } else {
      if (index[i] === undefined) {
        index[i] = output.length;
        output.push(['countries.'+alpha3Mapping[i]]);
      }
      if (output[index[i]].length !== reqlen) {
        delete output[index[i]];
        delete index[i];
        console.log('Ignoring: '+locale+' '+i+'\n');
      } else {
        output[index[i]].push(countries[i]);
      }
    }
  }
}

doit('en');
doit('de');
doit('es');
doit('fr');
doit('it');
doit('ja');
doit('ko');
doit('pl');
doit('pt');
doit('ru');
doit('tr');

csv().from(output).to('countries.csv');