Cordova hook for incrementing build numbers. Increases only the platform you build

010_increment_build_numbers.js

#!/usr/bin/env node

// Fork of:
// https://gist.github.com/ohh2ahh/f35ff6e0d9f8b4268cdb

// Save hook under `project-root/hooks/before_build/`
//
// Don't forget to install xml2js using npm
// `$ npm install xml2js`

var fs = require('fs');
var xml2js = require('xml2js');

function getPlatform() {
  if (process.argv[2]) {
    // go through each of the platform directories that have been prepared
    var platforms = (process.env.CORDOVA_PLATFORMS ? process.env.CORDOVA_PLATFORMS.split(',') : []);

    for(var x=0; x<platforms.length; x++) {
      // open up the index.html file at the www root
      try {
        var platform = platforms[x].trim().toLowerCase();
        return platform;
      } catch(e) {
        process.stdout.write(e);
      }
    }
  }
}

function incrementAndroidBuildNumber(obj) {
  // android-versionCode doen't exist in config.xml
  if(typeof obj['widget']['$']['android-versionCode'] === 'undefined') {
    obj['widget']['$']['android-versionCode'] = 0;
  }
  // Increment build number
  obj['widget']['$']['android-versionCode']++;
  return obj;
}

function incrementiOSBuildNumber(obj) {
  // ios-CFBundleVersion doen't exist in config.xml
  if(typeof obj['widget']['$']['ios-CFBundleVersion'] === 'undefined') {
    obj['widget']['$']['ios-CFBundleVersion'] = 0;
  }
  // Increment build number
  obj['widget']['$']['ios-CFBundleVersion']++;
  return obj;
}

// Read config.xml
fs.readFile('config.xml', 'utf8', function(err, data) {
  if(err) {
    return console.log(err);
  }
  
  // Get XML
  var xml = data;
  
  // Parse XML to JS Obj
  xml2js.parseString(xml, function (err, result) {
    if(err) {
      return console.log(err);
    }
    
    // Get JS Obj
    var obj = result;
    var platform = getPlatform();
    var buildNumber;

    if (platform == 'android') {
      obj = incrementAndroidBuildNumber(obj);
      buildNumber = obj['widget']['$']['android-versionCode'];
    } else if (platform == 'ios') {
      obj = incrementiOSBuildNumber(obj);
      buildNumber = obj['widget']['$']['ios-CFBundleVersion'];
    }

    // Build XML from JS Obj
    var builder = new xml2js.Builder();
    var xml = builder.buildObject(obj);
    
    // Write config.xml
    fs.writeFile('config.xml', xml, function(err) {
      if(err) {
        return console.log(err);
      }
      
      console.log('Build number for ' + platform + ' successfully incremented to build ' + buildNumber);
    });
    
  });
});