Build number hook

build_number.js

#!/usr/bin/env node

// Based on the 'replace text' hook found here: http://devgirl.org/2013/11/12/three-hooks-your-cordovaphonegap-project-needs/
// This hook should be placed in the 'after_prepare' hook folder.

// The hook relies on a JSON file located at '<project_root>/resources/build_number.json' to track the build number.
// build.json content:
// { "major": 1, "minor": 2, "build": 3 }
// this example would generate build number "1.2.4" (because the build is incremented before, so build_number.json reflects the most recent build.)

// Add 'BUILD_NUMBER' to the version number in the '<project_root>/config.xml' file.

// this plugin replaces arbitrary text in arbitrary files
//
// Look for the string CONFIGURE HERE for areas that need configuration
//
console.log("Starting build number update");

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

var rootDir = process.argv[2];

function replace_string_in_file(filename, to_replace, replace_with) {
    console.log('Replacing entries in file ' + filename);
    var data = fs.readFileSync(filename, 'utf8');

    var result = data.replace(new RegExp(to_replace, "g"), replace_with);
    fs.writeFileSync(filename, result, 'utf8');
}

function escapeSpecialChars(jsonString){
    return jsonString.replace(/\n/g, '\\n').replace(/\r/g, '\\r').replace(/\t/g, '\\t').replace(/\f/g, '\\f');
}

if (rootDir) {

    var buildFile = path.join(rootDir, "resources", "build_number.json");
    
    console.log('Parsing build_number.json');
    var buildObj = JSON.parse(escapeSpecialChars(fs.readFileSync(buildFile, 'utf8')));

    // CONFIGURE HERE
    // with the names of the files that contain tokens you want replaced.  Replace files that have been copied via the prepare step.

    var buildsToReplace = [
        //ios
        "platforms/ios/appName/config.xml",
        "platforms/ios/appName/appName-info.plist",

        //android
        //"platforms/android/AndroidManifest.xml",
        //"platforms/android/ant-build/AndroidManifest.cordova.xml",
        //"platforms/android/res/xml/config.xml"
    ];

    buildObj.build++;
    var buildNumberString = buildObj.major.toString() + '.' + buildObj.minor.toString() + '.' + buildObj.build.toString();

    buildsToReplace.forEach(function(val, index, array) {
        "use strict";
        var fullFilename = path.join(rootDir, val);

        if (fs.existsSync(fullFilename)) {
            replace_string_in_file(fullFilename, "BUILD_NUMBER", buildNumberString);
            // ... any other configuration
        } else {
            //console.log("missing: "+fullfilename);
        }
    });
    console.log('Build number updated to ' + buildNumberString);

    fs.writeFileSync(buildFile, JSON.stringify(buildObj), ["utf8"]);
}