boost.install

<?php

/**
 * @file
 * Handles Boost module installation and upgrade tasks.
 */

//////////////////////////////////////////////////////////////////////////////
// Core API hooks

/**
 * Implements hook_enable().
 */
function boost_enable() {
  boost_htaccess_cache_dir_put();
}

/**
 * Implements hook_disable().
 */
function boost_disable() {
  // Make sure that the static page cache is wiped when the module is disabled:
  boost_flush_caches();
  drupal_set_message(t('Static page cache cleared.'));
}

/**
 * Implements hook_install().
 */
function boost_install() {
}

/**
 * Implements hook_uninstall().
 */
function boost_uninstall() {
  // Clear variables
  $name = 'boost_';
  db_delete('variable')
    ->condition('name', db_like($name) . '%', 'LIKE')
    ->execute();
  cache_clear_all('variables', 'cache_bootstrap');
}

/**
 * Implements hook_requirements().
 */
function boost_requirements($phase) {
  $requirements = array();
  $t = get_t();
  // Check the server's ability to use boost
  if ($phase == 'runtime') {
    // Check if core cache is enabled
    $core_cache = variable_get('cache', 0);
    if ($core_cache) {
      $requirements['boost_core_cache'] = array(
        'title' => $t('Boost'),
        'value' => $t('Core cache is enabled'),
        'severity' => REQUIREMENT_WARNING,
        'description' => $t('Boost will not function properly while Drupal core cache is enabled. Disable Boost or <a href="@settings">the core cache</a>.', array('@settings' => url('admin/config/development/performance'))),
      );
    }

    // Check cache directories
    $cache_directories = array(
      boost_get_normal_cache_dir(),
    );
    foreach ($cache_directories as $cache_directory) {
      if (boost_mkdir($cache_directory)) {
//         $root_file = file_put_contents($cache_directory . '/' . variable_get('boost_root_file', '.boost'), $cache_directory);
      }
      if (!is_dir($cache_directory)) {
        $requirements['boost_default'] = array(
          'title'       => $t('Boost'),
          'description' => $t('!cache_dir: does not exist.', array('!cache_dir' => $cache_directory)),
          'severity'    => REQUIREMENT_ERROR,
          'value'       => $t('Cache path'),
        );
      }
      if (is_dir($cache_directory) && (!is_writable($cache_directory))) {
        $requirements['boost_permissions'] = array(
          'title'       => $t('Boost'),
          'description' => $t('Directory %dir credentials - Permissions: %fp. Owner %fo. Group %fg.<br /> Your credentials - Group ID: %gid. User ID: %uid. Current script owner: %user.', array('%dir' => getcwd() . '/' . $cache_directory, '%gid' => getmygid(), '%uid' => getmyuid(), '%user' => get_current_user(), '%fp' => substr(sprintf('%o', fileperms($cache_directory)), -4), '%fo' => fileowner($cache_directory), '%fg' => filegroup($cache_directory) )),
          'severity'    => REQUIREMENT_ERROR,
          'value'       => $t('Can not write to file-system'),
        );
      }
    }
    if (empty($requirements)) {
      $requirements['boost'] = array(
        'title'       => $t('Boost'),
        'severity'    => REQUIREMENT_OK,
        'value'       => $t('Boost installed correctly, should be working if properly <a href="@settings">configured</a>.', array('@settings' => url('admin/config/system/boost'))),
      );
    }
  }
  return $requirements;
}