030_junkcleanup.js

#!/usr/bin/env node
# Put this on hooks/after_prepare
# to clean up js junk

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

var rootDir = process.argv[2];
var platformPath = path.join(rootDir, 'platforms');
var platform = process.env.CORDOVA_PLATFORMS;
var cliCommand = process.env.CORDOVA_CMDLINE;

// hook configuration
//var isRelease = true; // by default this hook is always enabled, see the line below on how to execute it only for release
var isRelease = (cliCommand.indexOf('--release') > -1);
var foldersToProcess = [ // add other www folders in here if needed (ex. js/controllers)
    'lib',
    'work',
    'resources'
];
var junkPatterns = [ // add filename regex patterns to identify junk files
    /^(?!.*www\/lib\/.*\.(js|css|map|ttf|jpg|png|svg)$)/, // All library files except .js and .css, fonts and images
    /\/www\/lib\/.*\/src\/.*/, // All library original source files
    /\/www\/lib\/.*\/examples\/.*/, // All library examples
    /\/www\/lib\/.*\/tutorials\/.*/, // All library tutorials
    /\/www\/work\//,
    /\/www\/resources\//
];

if (!isRelease) {
    return;
}

switch (platform) {
    case 'android':
        platformPath = path.join(platformPath, platform, 'assets', 'www');
        break;
    case 'ios':
        platformPath = path.join(platformPath, platform, 'www');
        break;
    default:
        console.log('this hook only supports android and ios currently');
        return;
}

foldersToProcess.forEach(function(folder) {
    var fullPath = path.join(platformPath, folder);
    processFiles(fullPath, function onFile(fileEntry) {
        if (_isJunk(fileEntry)) {
            _deleteFile(fileEntry);
        }
    });
});

function _isJunk(file) {
    var isJunk = false;
    var i;
    var len = junkPatterns.length;
    for (i = 0; i < len; i++) {
        if (junkPatterns[i].test(file)) {
            isJunk = true;
            break;
        }
    }

    return isJunk;
}


/**
	 * Go recursively into a dir and, for each file, call a function
	 * @param dir Initial directory
	 * @param fileCallback The function to call for each file
	 */
	function processFiles(dir, fileCallback) {
		fs.readdir(dir, function (err, list) {
			if (err) {
				console.log('_findLiteFiles err: ' + err);
				return;
			}
			list.forEach(function(entry) {
				entry = path.join(dir, entry);
				fs.stat(entry, function(err, stat) {
					if (stat) {
						if (stat.isDirectory()) {
							processFiles(entry, fileCallback);
						} else {
							fileCallback(entry);
						}
					}
				});
			});
		});
	}



function _deleteFile(file) {
    console.log('Deleting file ' + file + '...');
    fs.unlinkSync(file);
}