iOS to Android string converter in JS

gistfile1.js

/*
  based on https://gist.github.com/florianmski/3442664
  and https://github.com/tmurakam/cashflow/blob/0a01ac9e0350dfb04979986444244f8daf4cb5a8/android/convertStrings.rb
  support for existing directories
  output by default to res/values-lang/strings.xml

  usage: node gist.js inputDir(optional) outputDir(optional)
  ex 1: node gist.js
  ex 2: node gist.js Localizations res
*/

var fs = require('fs');

function makeDirectory (path) {
  if (fs.existsSync(path)) return;

  fs.mkdirSync(path, 0766, function(err){
   if (err) {
     console.log(err);
   }
  });
}

function extractData (string) {
  var data, regex, name, value;

  regex = /\"(.*)\"\s*=\s*\"(.*)\"/;
  data = regex.exec(string);

  if (!data) return null;

  name = data[1].replace(/[ .]/, "_");
  value = data[2].replace(/&/, "&");
  value = value.replace(/</, "&lt;");

  return {
    name: name,
    value: value
  };
}

function writeFile (input, output) {
  var file, strings, stream, data;
  file = fs.readFileSync(input);
  strings = file.toString().split("\n");

  stream = fs.createWriteStream(output + "/strings.xml");
  stream.once('open', function(fd) {
    stream.write("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
    stream.write("<resources>\n");

    for (var i = 0; i < strings.length; i++) {
      data = extractData(strings[i]);

      if (data) {
        stream.write("\t<string name=\"" + data.name + "\">" + data.value + "</string>\n");
      }
    }

    stream.write("</resources>\n");
    stream.end();
  });
}

function iOStoAndroid () {
  var inputs, outputs, languages;

  inputs = process.argv[2] || "./";
  outputs = process.argv[3] || "res";
  languages = fs.readdirSync(inputs);

  makeDirectory(outputs);

  languages.forEach(function(lang, index, array) {
    var input, output;

    input = inputs + "/" + lang + "/Localizable.strings";
    output = outputs + "/values-" + lang.replace(/(.*)\.[^.]+$/, "$1");

    if (!fs.existsSync(input)) return;

    makeDirectory(output);
    writeFile(input, output);
  });
}

iOStoAndroid();