<?php
/**
 * @file
 * A necessary file for letting Drupal know this is a module. All functionality
 * goes into rb_theme.rules.inc.
 */

/**
 * Implement hook_preprocess_html().
 */
function rb_theme_preprocess_html(&$vars) {
  // Check if the rule has set the static variable
  if(rb_theme_static('head_title')) {
    $vars['head_title'] = rb_theme_static('head_title');
  }
  if(rb_theme_static('classes_array')) {
    // Split the variable to an array on new lines
    $classes = explode( "\n", rb_theme_static('classes_array'));
    foreach($classes as $class) {
      // Add each class to the classes_array, sanitze the class using
      // drupal_html_class
      $vars['classes_array'][] = drupal_html_class($class);
    }   
  }
}

/**
 * Helper function to store a value in a static variable.
 *
 * @param $name
 *     The name of the value to store.
 * @param $value
 *     The value to store, if omitted stored value for $name is returned.
 * @return
 *     If $value is not passed, the value stored for $name is returned.
 */
function rb_theme_static($name, $value = null) {
  static $rb_theme_static;
  if (is_null($value) && isset($rb_theme_static[$name])) {
    return $rb_theme_static[$name];
  }
  elseif (is_null($value) && !isset($rb_theme_static[$name])) {
    return FALSE;
  }
  $rb_theme_static[$name] = $value;
}