Prototype of Mardown template engine

index.js

/* jshint evil:true */

var fs = require('fs');

var _ = require('lodash');

var marked = require('marked');
var renderer = new marked.Renderer();

var model = fs.readFileSync('model.md').toString();

var Entities = require('html-entities').AllHtmlEntities;
var entities = new Entities();

var result = '';

var test = null;

//console.log('model', model;

var data = {
  props: {
    cssPreprocessor: {
      extension: 'css'
    },
    jsPreprocessor: {
      extension: 'js'
    }
  }
};

renderer.paragraph = function(text) {
  if(/^if/.test(text)) {
    var source = 'with(data) { ' + entities.decode(text.substring(2)) + '; }';
    test = eval(source);
  } else if(/^else/.test(text)) {
    test = !test;
  } else {
    test = null;
  }
};

renderer.code = function(code, lang, callback) {
  if(test === null || test) {
    result = result + code + '\n';
  }
};

marked(model, {
  renderer: renderer
}, function(content) {
  console.log('result', _.template(result, data));
});

model.md

'use strict';

var gulp = require('gulp');

gulp.task('watch', ['wiredep', 'injector:css', 'injector:js'] ,function () {
  gulp.watch('src/{app,components}/**/*.<%= props.cssPreprocessor.extension %>', ['injector:css']);

if props.jsPreprocessor.extension === 'js'

  gulp.watch('src/{app,components}/**/*.js', ['injector:js']);

else

  gulp.watch('src/{app,components}/**/*.{js,<%= props.jsPreprocessor.extension %>}', ['injector:js']);

endif

  gulp.watch('src/assets/images/**/*', ['images']);
  gulp.watch('bower.json', ['wiredep']);
});