<?php

/**
 * @file
 * Install, update, and uninstall functions for the transliteration module.
 */

/**
 * Implements hook_install().
 */
function transliteration_install() {
  module_load_include('inc', 'transliteration', 'transliteration.admin');

  if (!$query = transliteration_file_query()) {
    // Database not supported.
    return;
  }
  if (!$query->countQuery()->execute()->fetchColumn()) {
    // Don't bother if no files need to be fixed.
    return;
  }
  $t = get_t();
  drupal_set_message($t('Transliteration has been installed. <a href="@transliteration-url">Fix existing file names</a>.', array('@transliteration-url' => url('admin/config/media/file-system/transliteration'))));
}

/**
 * Implements hook_uninstall().
 */
function transliteration_uninstall() {
  variable_del('transliteration_file_uploads');
  variable_del('transliteration_file_lowercase');
  variable_del('transliteration_search');
}

/**
 * Remove unnecessary Drupal 6 variables.
 */
function transliteration_update_7300() {
  // Delete all the transliteration_filter_no_known_transliteration_* variables
  // and then clear the variable cache.
  db_query("DELETE FROM {variable} WHERE name LIKE 'transliteration_filter_no_known_transliteration_%'");
  cache_clear_all('variables', 'cache');
}
