minifyjs.module in Minify JS 7

File

minifyjs.module

<?php

define('MINIFYJS_CACHE_CID', 'minifyjs:all_files');

/**
 * Implements hook_permission()
 */
function minifyjs_permission() {
  return array(
    'administer minifyjs' => array(
      'title' => t('Administer Minify JS Module'),
      'description' => t('Perform administration tasks for Minify JS module.'),
    ),
  );
}

/**
 * Implements hook_menu()
 */
function minifyjs_menu() {
  $items['admin/config/development/performance/default'] = array(
    'title' => 'Performance',
    'type' => MENU_DEFAULT_LOCAL_TASK,
    'weight' => 1,
  );
  $items['admin/config/development/performance/js'] = array(
    'access arguments' => array(
      'administer minifyjs',
    ),
    'file' => 'minifyjs.admin.inc',
    'page arguments' => array(
      'minifyjs_manage_javascript_files_form',
    ),
    'page callback' => 'drupal_get_form',
    'title' => 'Manage JavaScript Files',
    'type' => MENU_LOCAL_TASK,
    'weight' => 2,
  );
  $items['admin/config/development/performance/js/scan'] = array(
    'access arguments' => array(
      'administer minifyjs',
    ),
    'file' => 'minifyjs.admin.inc',
    'page callback' => 'minifyjs_scan_for_javascript_files',
    'title' => 'Scan for Javascript Files',
    'type' => MENU_LOCAL_ACTION,
  );
  $items['admin/config/development/performance/js/%/restore'] = array(
    'access arguments' => array(
      'administer minifyjs',
    ),
    'file' => 'minifyjs.admin.inc',
    'page arguments' => array(
      5,
    ),
    'page callback' => 'minifyjs_restore_original_file',
    'title' => 'Restore Original File',
    'type' => MENU_CALLBACK,
  );
  $items['admin/config/development/performance/js/%/minify'] = array(
    'access arguments' => array(
      'administer minifyjs',
    ),
    'file' => 'minifyjs.admin.inc',
    'page arguments' => array(
      5,
    ),
    'page callback' => 'minifyjs_create_minified_file',
    'title' => 'Minify File',
    'type' => MENU_CALLBACK,
  );
  $items['admin/config/development/minifyjs'] = array(
    'access arguments' => array(
      'administer minifyjs',
    ),
    'file' => 'minifyjs.admin.inc',
    'page callback' => 'drupal_get_form',
    'page arguments' => array(
      'minifyjs_settings_form',
    ),
    'title' => 'Minify javascript settings',
  );
  return $items;
}

/**
 * Implements hook_FORM_ID_alter().
 *
 * @param type $form
 * @param type $form_state
 */
function minifyjs_form_system_performance_settings_alter(&$form, &$form_state, $form_id) {
  if (user_access('administer minifyjs')) {

    // Determine the number of files minified.
    $files = minifyjs_load_all_files();
    $files_minified = 0;
    foreach ($files as $file) {
      if (!empty($file->minified_uri)) {
        $files_minified++;
      }
    }
    $form['bandwidth_optimization']['minifyjs_use_minified_javascript'] = array(
      '#type' => 'checkbox',
      '#title' => t('Use Minified JavaScript files.'),
      '#disabled' => $files_minified ? FALSE : TRUE,
      '#description' => t('Toggle minified javascript files on or off. There are %minified minified files out of %total total files available. !click.', array(
        '%minified' => $files_minified,
        '%total' => count($files),
        '!click' => l(t('Click here to manage your javascript files.'), 'admin/config/development/performance/js'),
      )),
      '#default_value' => variable_get('minifyjs_use_minified_javascript', 0),
    );
  }
}

/**
 * Implements hook_js_alter().
 */
function minifyjs_js_alter(&$scripts) {

  // Determine if the replacement needs to be performed.
  $do_replace = FALSE;
  if (variable_get('minifyjs_use_minified_javascript', 0)) {
    if (variable_get('minifyjs_disable_admin', 0)) {
      if (!path_is_admin(current_path())) {
        $do_replace = TRUE;
      }
    }
    else {
      $do_replace = TRUE;
    }
  }
  if ($do_replace) {

    // Files array is keyed by file id. To make this operation as fast as
    // possible, the array should be keyed by file uri. Also, shorten the
    // array by removing files that are not minified.
    $files = minifyjs_load_all_files();
    $minified_files = array();
    foreach ($files as $file) {
      if (!empty($file->minified_uri)) {
        $minified_files[$file->uri] = $file;
      }
    }

    // Update the scripts array with new file info.
    foreach ($scripts as $path => $file) {
      if (isset($minified_files[$path])) {
        $scripts[$path]['data'] = $minified_files[$path]->minified_uri;
        minifyjs_update_scripts($scripts, $path, $minified_files[$path]->minified_uri);
      }
    }
  }
}

/*
 * Helper function to change array key, without changing its order
 */
function minifyjs_update_scripts(&$scripts, $existing, $new) {
  $keys = array_keys($scripts);
  $index = array_search($existing, $keys, TRUE);
  if ($index !== FALSE) {
    $keys[$index] = $new;
    $scripts = array_combine($keys, $scripts);
  }
}

/**
 * Helper function - load all of the minifyjs_file records from cache or
 * directly from the database.
 */
function minifyjs_load_all_files() {

  // load files from cache
  if ($cached = cache_get(MINIFYJS_CACHE_CID)) {
    return $cached->data;
  }

  // re-build cache
  $result = db_select('minifyjs_file', 'f')
    ->fields('f')
    ->orderBy('uri')
    ->execute();
  $exclusions = variable_get('minifyjs_exclusion_list');
  $files = array();
  while ($file = $result
    ->fetchObject()) {

    // ignore exclusions
    if (!drupal_match_path($file->uri, $exclusions)) {
      $files[$file->fid] = $file;
    }
  }

  // cache for 1 day
  cache_set(MINIFYJS_CACHE_CID, $files, 'cache', strtotime('+1 day', REQUEST_TIME));
  return $files;
}

Functions

Name	Description
minifyjs_form_system_performance_settings_alter	Implements hook_FORM_ID_alter().
minifyjs_js_alter	Implements hook_js_alter().
minifyjs_load_all_files	Helper function - load all of the minifyjs_file records from cache or directly from the database.
minifyjs_menu	Implements hook_menu()
minifyjs_permission	Implements hook_permission()
minifyjs_update_scripts

Constants

Name	Description
MINIFYJS_CACHE_CID