build.js

var fs     = require('fs'),
    uglify = require('uglify-js'),
    jshint = require('jshint'),
    gzip   = require('gzip'),
    jade = require('jade'),
    clean = require('clean-css'),
    moment = require('./moment');


/*********************************************
    Constants
*********************************************/


var JSHINT_CONFIG = {
    "node" : true,
    "es5" : true,
    "browser" : true,
    "boss" : false,
    "curly": true,
    "debug": false,
    "devel": false,
    "eqeqeq": true,
    "eqnull": true,
    "evil": false,
    "forin": false,
    "immed": false,
    "laxbreak": false,
    "newcap": true,
    "noarg": true,
    "noempty": false,
    "nonew": false,
    "nomen": false,
    "onevar": true,
    "plusplus": false,
    "regexp": false,
    "undef": true,
    "sub": true,
    "strict": false,
    "white": true
};
var LANG_MINIFY = "de en-gb es eu fr it kr nb nl pl pt ru sv".split(" ");
var LANG_TEST = "de en en-gb es eu fr it kr nb nl pl pt ru sv".split(" ");
var LANG_PREFIX = "(function() { var moment; if (typeof window === 'undefined') { moment = require('../../moment'); module = QUnit.module; } else { moment = window.moment; }";
var LANG_SUFFIX = "})();";
var VERSION = '1.2.0';
var MINIFY_COMMENT = '/* Moment.js | version : ' + VERSION + ' | author : Tim Wood | license : MIT */\n';
var MINSIZE = 0;
var SRCSIZE = 0;
var BUILD_DATE = moment().format('YYMMDD_HHmmss');


/*********************************************
    Helpers
*********************************************/

/*
 * function to minify a string and write to a file
 *
 * @param {String} source The source JS
 * @param {String} dest The file destination
 */
function makeFile(filename, contents, callback) {
    fs.writeFile(filename, contents, 'utf8', function(err) {
        console.log('saved : ' + filename);
        gzip(contents, function(err, data) {
            console.log('size : ' + filename + ' ' + contents.length + ' b (' + data.length + ' b)');
        });
        if (callback) {
            callback();
        }
    });
}

/*********************************************
    Uglify
*********************************************/

/*
 * function to minify a string and write to a file
 *
 * @param {String} source The source JS
 * @param {String} dest The file destination
 */
function minifyToFile(source, dest, prefix, callback) {
    var ast, 
        ugly;
    ast  = uglify.parser.parse(source);
    ast  = uglify.uglify.ast_mangle(ast);
    ast  = uglify.uglify.ast_squeeze(ast);
    ugly = uglify.uglify.gen_code(ast);

    makeFile('./' + dest + '.min.js', (prefix || '') + ugly);

    if (callback) {
        callback((prefix || '') + ugly);
    }
}


/*********************************************
    JSHint
*********************************************/


function logError(error) {
    console.log('==== ' + error.id + ' ' + error.line + ':' + error.character);
    console.log('     ' + error.reason);
    console.log('     ' + error.evidence);
}

function hint(source, name) {
    var passed = jshint.JSHINT(source, JSHINT_CONFIG);

    if (passed) {
        console.log('jshinted : ' + name);
        return true;
    } else {
        console.log('============================================');
        console.log(name + ' failed jshint ');
        jshint.JSHINT.errors.forEach(logError);
        console.log('============================================');
        return false;
    }
}


/*********************************************
    Lang Minify
*********************************************/


(function(){
    var allSource = '',
        i,
        failures = 0,
        source;
    for (i = 0; i < LANG_MINIFY.length; i++) {
        source = fs.readFileSync('./lang/' + LANG_MINIFY[i] + '.js', 'utf8');
        if (hint(source, 'lang/min/' + LANG_MINIFY[i])) {
            minifyToFile(source, 'lang/min/' + LANG_MINIFY[i]);
            allSource += source;
        } else {
            failures ++;
        }
    }
    if (failures === 0) {
        minifyToFile(allSource, 'lang/min/all');
        minifyToFile(allSource, 'site/js/lang-all');
    }
})();


/*********************************************
    Lang Tests
*********************************************/


(function(){
    var source = LANG_PREFIX;
    for (i = 0; i < LANG_TEST.length; i++) {
        source += fs.readFileSync('./lang/test/' + LANG_TEST[i] + '.js', 'utf8');
    }
    source += LANG_SUFFIX;
    makeFile('./sitesrc/js/lang-tests.js', source, function(){
        makeUnitTests();
    });
})();


/*********************************************
    Main
*********************************************/


(function(){
    var source = fs.readFileSync('./moment.js', 'utf8');
    if (hint(source, 'moment')) {
        minifyToFile(source, 'moment', MINIFY_COMMENT, function(src){
            gzip(src, function(err, data) {
                MINSIZE = data.length;
                makeDocs();
            });
        });
        minifyToFile(source, 'site/js/moment', MINIFY_COMMENT);
    }
    gzip(source, function(err, data) {
        SRCSIZE = source.length;
        makeDocs();
        console.log('size : ./moment.js ' + source.length + ' b (' + data.length + ' b)');
    });
})();


/*********************************************
    JS
*********************************************/


(function(){
    var snippet = fs.readFileSync('./sitesrc/js/snippet.js', 'utf8');
    var docs = fs.readFileSync('./sitesrc/js/docs.js', 'utf8');
    minifyToFile(snippet + docs, 'site/js/docs');
})();

(function(){
    var moment = fs.readFileSync('./moment.js', 'utf8');
    var fr = fs.readFileSync('./lang/fr.js', 'utf8');
    var snippet = fs.readFileSync('./sitesrc/js/snippet.js', 'utf8');
    var home = fs.readFileSync('./sitesrc/js/home.js', 'utf8');
    minifyToFile(moment + fr + snippet + home, 'site/js/home');
})();

function makeUnitTests(){
    var q = fs.readFileSync('./sitesrc/js/qunit.js', 'utf8');
    var u = fs.readFileSync('./sitesrc/js/unit-tests.js', 'utf8');
    var l = fs.readFileSync('./sitesrc/js/lang-tests.js', 'utf8');
    makeFile('site/js/test.min.js', q + u + l);
}


/*********************************************
    Jade
*********************************************/


function toKb(input){
    var num = Math.round(input / 100) / 10;
    return num + 'kb';
}

function jadeToHtml(jadePath, htmlPath) {
    var args = {
        version : VERSION,
        minsize : toKb(MINSIZE),
        srcsize : toKb(SRCSIZE),
        builddate : BUILD_DATE
    };
    var snippet = fs.readFile(jadePath, 'utf8', function(err, data){
        var compile = jade.compile(data, {
            filename : 'sitesrc/html.jade'
        });
        makeFile(htmlPath, compile(args));
    });
}

function makeDocs() {
    if (SRCSIZE === 0 || MINSIZE === 0) {
        return;
    }
    jadeToHtml('./sitesrc/home.jade', './site/index.html');
    jadeToHtml('./sitesrc/docs.jade', './site/docs/index.html');
    jadeToHtml('./sitesrc/test.jade', './site/test/index.html');
}


/*********************************************
    CSS
*********************************************/


(function(){
    fs.readFile('./sitesrc/css/style.css', 'utf8', function(err, data){
        makeFile('./site/css/style.css', clean.process(data));
    });
})();