text: /*******************************
            Build Task
  *******************************/
  
  var
    // dependencies
    gulp         = require('gulp-help')(require('gulp')),
    runSequence  = require('run-sequence'),
  
    // config
    config       = require('./config/user'),
    install      = require('./config/project/install'),
  
    // task sequence
    tasks        = []
  ;
  
  
  // sub-tasks
  if(config.rtl) {
    require('./collections/rtl')(gulp);
  }
  require('./collections/build')(gulp);
  
  
  module.exports = function(callback) {
  
    console.info('Building Semantic');
  
    if( !install.isSetup() ) {
      console.error('Cannot find semantic.json. Run "gulp install" to set-up Semantic');
      return;
    }
  
    // check for right-to-left (RTL) language
    if(config.rtl === true || config.rtl === 'Yes') {
      gulp.start('build-rtl');
      return;
    }
  
    if(config.rtl == 'both') {
      tasks.push('build-rtl');
    }
  
    tasks.push('build-javascript');
    tasks.push('build-css');
    tasks.push('build-assets');
  
    runSequence(tasks, callback);
  };
  