Increment build number for Cordova project

010_increment_build_number.js

#!/usr/bin/env node

"use strict";

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

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

// Process
var cliCommand = process.env.CORDOVA_CMDLINE;
var isRelease = (cliCommand.indexOf('--release') > -1);

// Exit
if (!isRelease) {
    return;
}

// Run increment build number
run();

function run() {
    patchConfigXml();
    patchPackageJson();
}

// Patch config.xml
function patchConfigXml() {
    fs.readFile('config.xml', 'utf8', function (err, data) {
        console.log('-----------------------------------------');
        console.log('Increment config.xml reversion number');
        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.warn(err);
            }

            // Get JS Obj
            var obj = result;

            // Patch version
            if (typeof obj.widget.$.version === 'undefined') {
                obj.widget.$.version = '0.0.1';
            } else {
                var currentVersion = obj.widget.$.version;
                var curVer = String(obj.widget.$.version).split('.');
                var versionObj = {
                    major: Number(curVer[0]),
                    minor: Number(curVer[1]),
                    reversion: Number(curVer[2])
                };
                console.log('Current Version: ', versionObj);
                // Increment reversion numbers
                versionObj.reversion += 1;
                console.log('Target Version: ', versionObj);
                var targetVersion = versionObj.major + '.' + versionObj.minor + '.' + versionObj.reversion;
                obj.widget.$.version = targetVersion;
                console.log(currentVersion + ' -> ' + targetVersion);
            }

            // Patch ios-CFBundleVersion
            if (typeof obj.widget.$['ios-CFBundleVersion'] === 'undefined') {
                obj.widget.$['ios-CFBundleVersion'] = '0.0.1.1';
            } else {
                var currentIosVersion = obj.widget.$['ios-CFBundleVersion'];
                var curIosVer = String(obj.widget.$['ios-CFBundleVersion']).split('.');
                var versionIosObj = {
                    major: Number(curIosVer[0]),
                    minor: Number(curIosVer[1]),
                    reversion: Number(curIosVer[2]),
                    build: Number(curIosVer[3])
                };
                console.log('Current ios-CFBundleVersion: ', versionIosObj);
                // Increment reversion numbers
                versionIosObj.reversion += 1;
                console.log('Target ios-CFBundleVersion: ', versionIosObj);
                var targetIosVersion = versionIosObj.major + '.' + versionIosObj.minor + '.' + versionIosObj.reversion + '.' + versionIosObj.build;
                obj.widget.$['ios-CFBundleVersion'] = targetIosVersion;
                console.log(currentIosVersion + ' -> ' + targetIosVersion);
            }

            // 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.warn(err); }
                console.log('config.xml reversion number successfully incremented');
            });

        });
    });    
}

// Patch package.json
function patchPackageJson() {
    fs.readFile('package.json', 'utf8', function (err, data) {
        console.log('-----------------------------------------');
        console.log('Increment package.json reversion number');
        if (err) {
            return console.warn(err);
        }

        // Get JSON
        var json = JSON.parse(data);
  
        if (typeof json.version === 'undefined') {
            json.version = '0.0.1';
        } else {
            var currentVersion = json.version;
            var curVer = String(json.version).split('.');
            var versionObj = {
                major: Number(curVer[0]),
                minor: Number(curVer[1]),
                reversion: Number(curVer[2])
            };
            console.log('Current Version: ', versionObj);
            // Increment reversion numbers
            versionObj.reversion += 1;
            console.log('Target Version: ', versionObj);
            var targetVersion = versionObj.major + '.' + versionObj.minor + '.' + versionObj.reversion;
            json.version = targetVersion;
            console.log(currentVersion + ' -> ' + targetVersion);
        }
  
        // Write package.json
        fs.writeFile('package.json', JSON.stringify(json, null, 4), function (err) {
            if (err) { return console.warn(err); }
            console.log('package.json reversion number successfully incremented');
        });
    });
}

Patch version to config.xml and package.json. In config.xml, also increase ios-CFBundleVersion.