eliace/ergo-js

var gulp = require('gulp');
var del = require('del');
var concat = require("gulp-concat");
var less = require('gulp-less');
var through2 = require("through2");
var File = require('vinyl');
var path = require('path');
var fs = require('fs');


var dependencies = function() {

    var sources = [];

    var MATCH_REGEXP = /^\/\/= require (.*)$/mg;


    var processDependencies = function(file, callback) {

        var s = String(file.contents);

        var deps = [];


        while(match = MATCH_REGEXP.exec(s)) {
            deps.push(match[1]);
        }


        s = s.replace(MATCH_REGEXP, '');

        file.contents = new Buffer(s);


        var dir = path.dirname(file.path);

        deps.forEach(function(dep) {
            var filepath = path.normalize( path.join(dir, dep+'.js') );
            if( fs.existsSync(filepath) ) {

            var f = new File({
                path: filepath,
                contents: fs.readFileSync(filepath)
            });

                processDependencies(f, callback);

                callback(f);
        }

        });

//        callback(file, callback);

    };


    var processFile = function(chunk, enc, callback) {
      var stream = this;

      if( chunk.isBuffer() ) {

          processDependencies(chunk, function(file){

//              console.log(file.path)

              if(sources.indexOf(file.path) == -1) {
                  stream.push(file);
              }

              sources.push(file.path);
          });

          this.push(chunk);

      }

      callback();
    }


    return through2.obj(processFile);
};





gulp.task('scripts', function() {

    gulp.src(["js/core/core.js", "js/data/data.js", "js/layouts/layouts.js", "js/includes/includes.js", "js/html/html.js"])
      .pipe(dependencies())
    .pipe(concat("ergojs-core.js"))
    .pipe(gulp.dest("dist"));

    gulp.src(["js/widgets/widgets.js"])
      .pipe(dependencies())
    .pipe(concat("ergojs-widgets-all.js"))
    .pipe(gulp.dest("dist"));

});


gulp.task('styles', function() {

    gulp.src(["css/ergojs-layouts.less"])
      .pipe(less())
    .pipe(concat("ergojs.css"))
    .pipe(gulp.dest("dist"));

});


gulp.task('watch', function() {
    gulp.watch('js/**', ['scripts']);
    gulp.watch('css/**', ['styles']);
});




gulp.task('clear', function() {

    del(['dist/*']);

});



gulp.task('default', ['clear', 'scripts', 'styles']);