the term,
          // so that the depth attribute remains correct.
          $term = clone $term;
        }
        $term->depth = $depth;
        unset($term->parent);
        $term->parents = $parents[$vid][$term->tid];
        $tree[] = $term;
        if (!empty($children[$vid][$term->tid])) {
          $has_children = TRUE;

          // We have to continue with this parent later.
          $process_parents[] = $parent;
          // Use the current term as parent for the next iteration.
          $process_parents[] = $term->tid;

          // Reset pointers for child lists because we step in there more often
          // with multi parents.
          reset($children[$vid][$term->tid]);
          // Move pointer so that we get the correct term the next time.
          next($children[$vid][$parent]);
          break;
        }
      } while ($child = next($children[$vid][$parent]));

      if (!$has_children) {
        // We processed all terms in this hierarchy-level, reset pointer
        // so that this function works the next time it gets called.
        reset($children[$vid][$parent]);
      }
    }
  }

  return $tree;
}

/**
 * Try to map a string to an existing term, as for glossary use.
 *
 * Provides a case-insensitive and trimmed mapping, to maximize the
 * likelihood of a successful match.
 *
 * @param name
 *   Name of the term to search for.
 *
 * @return
 *   An array of matching term objects.
 */
function taxonomy_get_term_by_name($name) {
  return taxonomy_term_load_multiple(array(), array('name' => trim($name)));
}

/**
 * Controller class for taxonomy terms.
 *
 * This extends the DrupalDefaultEntityController class. Only alteration is
 * that we match the condition on term name case-independently.
 */
class TaxonomyTermController extends DrupalDefaultEntityController {

  protected function buildQuery($ids, $conditions = array(), $revision_id = FALSE) {
    $query = parent::buildQuery($ids, $conditions, $revision_id);
    $query->addTag('translatable');
    $query->addTag('term_access');
    // When name is passed as a condition use LIKE.
    if (isset($conditions['name'])) {
      $query_conditions = &$query->conditions();
      foreach ($query_conditions as $key => $condition) {
        if ($condition['field'] == 'base.name') {
          $query_conditions[$key]['operator'] = 'LIKE';
          $query_conditions[$key]['value'] = db_like($query_conditions[$key]['value']);
        }
      }
    }
    // Add the machine name field from the {taxonomy_vocabulary} table.
    $query->innerJoin('taxonomy_vocabulary', 'v', 'base.vid = v.vid');
    $query->addField('v', 'machine_name', 'vocabulary_machine_name');
    return $query;
  }

  protected function cacheGet($ids, $conditions = array()) {
    $terms = parent::cacheGet($ids, $conditions);
    // Name matching is case insensitive, note that with some collations
    // LOWER() and drupal_strtolower() may return different results.
    foreach ($terms as $term) {
      $term_values = (array) $term;
      if (isset($conditions['name']) && drupal_strtolower($conditions['name'] != drupal_strtolower($term_values['name']))) {
        unset($terms[$term->tid]);
      }
    }
    return $terms;
  }
}

/**
 * Controller class for taxonomy vocabularies.
 *
 * This extends the DrupalDefaultEntityController class, adding required
 * special handling for taxonomy vocabulary objects.
 */
class TaxonomyVocabularyController extends DrupalDefaultEntityController {

  protected function buildQuery($ids, $conditions = array(), $revision_id = FALSE) {
    $query = parent::buildQuery($ids, $conditions, $revision_id);
    $query->addTag('translatable');
    $query->orderBy('base.weight');
    $query->orderBy('base.name');
    return $query;
  }
}

/**
 * Load multiple taxonomy terms based on certain conditions.
 *
 * This function should be used whenever you need to load more than one term
 * from the database. Terms are loaded into memory and will not require
 * database access if loaded again during the same page request.
 *
 * @see entity_load()
 * @see EntityFieldQuery
 *
 * @param $tids
 *   An array of taxonomy term IDs.
 * @param $conditions
 *   (deprecated) An associative array of conditions on the {taxonomy_term}
 *   table, where the keys are the database fields and the values are the
 *   values those fields must have. Instead, it is preferable to use
 *   EntityFieldQuery to retrieve a list of entity IDs loadable by
 *   this function.
 *
 * @return
 *   An array of term objects, indexed by tid. When no results are found, an
 *   empty array is returned.
 *
 * @todo Remove $conditions in Drupal 8.
 */
function taxonomy_term_load_multiple($tids = array(), $conditions = array()) {
  return entity_load('taxonomy_term', $tids, $conditions);
}

/**
 * Load multiple taxonomy vocabularies based on certain conditions.
 *
 * This function should be used whenever you need to load more than one
 * vocabulary from the database. Terms are loaded into memory and will not
 * require database access if loaded again during the same page request.
 *
 * @see entity_load()
 *
 * @param $vids
 *  An array of taxonomy vocabulary IDs, or FALSE to load all vocabularies.
 * @param $conditions
 *  An array of conditions to add to the query.
 *
 * @return
 *  An array of vocabulary objects, indexed by vid.
 */
function taxonomy_vocabulary_load_multiple($vids = array(), $conditions = array()) {
  return entity_load('taxonomy_vocabulary', $vids, $conditions);
}

/**
 * Return the vocabulary object matching a vocabulary ID.
 *
 * @param $vid
 *   The vocabulary's ID.
 *
 * @return
 *   The vocabulary object with all of its metadata, if exists, FALSE otherwise.
 *   Results are statically cached.
 */
function taxonomy_vocabulary_load($vid) {
  $vocabularies = taxonomy_vocabulary_load_multiple(array($vid));
  return reset($vocabularies);
}

/**
 * Return the vocabulary object matching a vocabulary machine name.
 *
 * @param $name
 *   The vocabulary's machine name.
 *
 * @return
 *   The vocabulary object with all of its metadata, if exists, FALSE otherwise.
 *   Results are statically cached.
 */
function taxonomy_vocabulary_machine_name_load($name) {
  $vocabularies = taxonomy_vocabulary_load_multiple(NULL, array('machine_name' => $name));
  return reset($vocabularies);
}

/**
 * Return the term object matching a term ID.
 *
 * @param $tid
 *   A term's ID
 *
 * @return
 *   A term object. Results are statically cached.
 */
function taxonomy_term_load($tid) {
  if (!is_numeric($tid)) {
    return FALSE;
  }
  $term = taxonomy_term_load_multiple(array($tid), array());
  return $term ? $term[$tid] : FALSE;
}

/**
 * Helper function for array_map purposes.
 */
function _taxonomy_get_tid_from_term($term) {
  return $term->tid;
}

/**
 * Implodes a list of tags of a certain vocabulary into a string.
 *
 * @see drupal_explode_tags()
 */
function taxonomy_implode_tags($tags, $vid = NULL) {
  $typed_tags = array();
  foreach ($tags as $tag) {
    // Extract terms belonging to the vocabulary in question.
    if (!isset($vid) || $tag->vid == $vid) {
      // Make sure we have a completed loaded taxonomy term.
      if (isset($tag->name)) {
        // Commas and quotes in tag names are special cases, so encode 'em.
        if (strpos($tag->name, ',') !== FALSE || strpos($tag->name, '"') !== FALSE) {
          $typed_tags[] = '"' . str_replace('"', '""', $tag->name) . '"';
        }
        else {
          $typed_tags[] = $tag->name;
        }
      }
    }
  }
  return implode(', ', $typed_tags);
}

/**
 * Implements hook_field_info().
 *
 * Field settings:
 * - allowed_values: a list array of one or more vocabulary trees:
 *   - vocabulary: a vocabulary machine name.
 *   - parent: a term ID of a term whose children are allowed. This should be
 *     '0' if all terms in a vocabulary are allowed. The allowed values do not
 *     include the parent term.
 *
 */
function taxonomy_field_info() {
  return array(
    'taxonomy_term_reference' => array(
      'label' => t('Term reference'),
      'description' => t('This field stores a reference to a taxonomy term.'),
      'default_widget' => 'options_select',
      'default_formatter' => 'taxonomy_term_reference_link',
      'settings' => array(
        'allowed_values' => array(
          array(
            'vocabulary' => '',
            'parent' => '0',
          ),
        ),
      ),
    ),
  );
}

/**
 * Implements hook_field_widget_info().
 */
function taxonomy_field_widget_info() {
  return array(
    'taxonomy_autocomplete' => array(
      'label' => t('Autocomplete term widget (tagging)'),
      'field types' => array('taxonomy_term_reference'),
      'settings' => array(
        'size' => 60,
        'autocomplete_path' => 'taxonomy/autocomplete',
      ),
      'behaviors' => array(
        'multiple values' => FIELD_BEHAVIOR_CUSTOM,
      ),
    ),
  );
}

/**
 * Implements hook_field_widget_info_alter().
 */
function taxonomy_field_widget_info_alter(&$info) {
  $info['options_select']['field types'][] = 'taxonomy_term_reference';
  $info['options_buttons']['field types'][] = 'taxonomy_term_reference';
}

/**
 * Implements hook_options_list().
 */
function taxonomy_options_list($field) {
  $function = !empty($field['settings']['options_list_callback']) ? $field['settings']['options_list_callback'] : 'taxonomy_allowed_values';
  return $function($field);
}

/**
 * Implements hook_field_validate().
 *
 * Taxonomy field settings allow for either a single vocabulary ID, multiple
 * vocabulary IDs, or sub-trees of a vocabulary to be specified as allowed
 * values, although only the first of these is supported via the field UI.
 * Confirm that terms entered as values meet at least one of these conditions.
 *
 * Possible error codes:
 * - 'taxonomy_term_illegal_value': The value is not part of the list of allowed values.
 */
function taxonomy_field_validate($entity_type, $entity, $field, $instance, $langcode, $items, &$errors) {
  // Build an array of existing term IDs so they can be loaded with
  // taxonomy_term_load_multiple();
  foreach ($items as $delta => $item) {
    if (!empty($item['tid']) && $item['tid'] != 'autocreate') {
      $tids[] = $item['tid'];
    }
  }
  if (!empty($tids)) {
    $terms = taxonomy_term_load_multiple($tids);

    // Check each existing item to ensure it can be found in the
    // allowed values for this field.
    foreach ($items as $delta => $item) {
      $validate = TRUE;
      if (!empty($item['tid']) && $item['tid'] != 'autocreate') {
        $validate = FALSE;
        foreach ($field['settings']['allowed_values'] as $settings) {
          // If no parent is specified, check if the term is in the vocabulary.
          if (isset($settings['vocabulary']) && empty($settings['parent'])) {
            if ($settings['vocabulary'] == $terms[$item['tid']]->vocabulary_machine_name) {
              $validate = TRUE;
              break;
            }
          }
          // If a parent is specified, then to validate it must appear in the
          // array returned by taxonomy_get_parents_all().
          elseif (!empty($settings['parent'])) {
            $ancestors = taxonomy_get_parents_all($item['tid']);
            foreach ($ancestors as $ancestor) {
              if ($ancestor->tid == $settings['parent']) {
                $validate = TRUE;
                break 2;
              }
            }
          }
        }
      }
      if (!$validate) {
        $errors[$field['field_name']][$langcode][$delta][] = array(
          'error' => 'taxonomy_term_reference_illegal_value',
          'message' => t('%name: illegal value.', array('%name' => $instance['label'])),
        );
      }
    }
  }
}

/**
 * Implements hook_field_is_empty().
 */
function taxonomy_field_is_empty($item, $field) {
  if (!is_array($item) || (empty($item['tid']) && (string) $item['tid'] !== '0')) {
    return TRUE;
  }
  return FALSE;
}

/**
 * Implements hook_field_formatter_info().
 */
function taxonomy_field_formatter_info() {
  return array(
    'taxonomy_term_reference_link' => array(
      'label' => t('Link'),
      'field types' => array('taxonomy_term_reference'),
    ),
    'taxonomy_term_reference_plain' => array(
      'label' => t('Plain text'),
      'field types' => array('taxonomy_term_reference'),
    ),
  );
}

/**
 * Implements hook_field_formatter_view().
 */
function taxonomy_field_formatter_view($entity_type, $entity, $field, $instance, $langcode, $items, $display) {
  $element = array();

  // Terms whose tid is 'autocreate' do not exist
  // yet and $item['taxonomy_term'] is not set. Theme such terms as
  // just their name.

  switch ($display['type']) {
    case 'taxonomy_term_reference_link':
      foreach ($items as $delta => $item) {
        if ($item['tid'] == 'autocreate') {
          $element[$delta] = array(
            '#markup' => check_plain($item['name']),
          );
        }
        else {
          $term = $item['taxonomy_term'];
          $uri = entity_uri('taxonomy_term', $term);
          $element[$delta] = array(
            '#type' => 'link',
            '#title' => $term->name,
            '#href' => $uri['path'],
            '#options' => $uri['options'],
          );
        }
      }
      break;

    case 'taxonomy_term_reference_plain':
      foreach ($items as $delta => $item) {
        $name = ($item['tid'] != 'autocreate' ? $item['taxonomy_term']->name : $item['name']);
        $element[$delta] = array(
          '#markup' => check_plain($name),
        );
      }
      break;
  }

  return $element;
}

/**
 * Returns the set of valid terms for a taxonomy field.
 *
 * @param $field
 *   The field definition.
 * @return
 *   The array of valid terms for this field, keyed by term id.
 */
function taxonomy_allowed_values($field) {
  $options = array();
  foreach ($field['settings']['allowed_values'] as $tree) {
    if ($vocabulary = taxonomy_vocabulary_machine_name_load($tree['vocabulary'])) {
      if ($terms = taxonomy_get_tree($vocabulary->vid, $tree['parent'])) {
        foreach ($terms as $term) {
          $options[$term->tid] = str_repeat('-', $term->depth) . $term->name;
        }
      }
    }
  }
  return $options;
}

/**
 * Implements hook_field_formatter_prepare_view().
 *
 * This preloads all taxonomy terms for multiple loaded objects at once and
 * unsets values for invalid terms that do not exist.
 */
function taxonomy_field_formatter_prepare_view($entity_type, $entities, $field, $instances, $langcode, &$items, $displays) {
  $tids = array();

  // Collect every possible term attached to any of the fieldable entities.
  foreach ($entities as $id => $entity) {
    foreach ($items[$id] as $delta => $item) {
      // Force the array key to prevent duplicates.
      if ($item['tid'] != 'autocreate') {
        $tids[$item['tid']] = $item['tid'];
      }
    }
  }
  if ($tids) {
    $terms = taxonomy_term_load_multiple($tids);

    // Iterate through the fieldable entities again to attach the loaded term data.
    foreach ($entities as $id => $entity) {
      $rekey = FALSE;

      foreach ($items[$id] as $delta => $item) {
        // Check whether the taxonomy term field instance value could be loaded.
        if (isset($terms[$item['tid']])) {
          // Replace the instance value with the term data.
          $items[$id][$delta]['taxonomy_term'] = $terms[$item['tid']];
        }
        // Terms to be created are not in $terms, but are still legitimate.
        else if ($item['tid'] == 'autocreate') {
          // Leave the item in place.
        }
        // Otherwise, unset the instance value, since the term does not exist.
        else {
          unset($items[$id][$delta]);
          $rekey = TRUE;
        }
      }

      if ($rekey) {
        // Rekey the items array.
        $items[$id] = array_values($items[$id]);
      }
    }
  }
}

/**
 * Title callback for term pages.
 *
 * @param $term
 *   A term object.
 *
 * @return
 *   The term name to be used as the page title.
 */
function taxonomy_term_title($term) {
  return $term->name;
}

/**
 * Implements hook_field_widget_form().
 */
function taxonomy_field_widget_form(&$form, &$form_state, $field, $instance, $langcode, $items, $delta, $element) {
  $tags = array();
  foreach ($items as $item) {
    $tags[$item['tid']] = isset($item['taxonomy_term']) ? $item['taxonomy_term'] : taxonomy_term_load($item['tid']);
  }

  $element += array(
    '#type' => 'textfield',
    '#default_value' => taxonomy_implode_tags($tags),
    '#autocomplete_path' => $instance['widget']['settings']['autocomplete_path'] . '/' . $field['field_name'],
    '#size' => $instance['widget']['settings']['size'],
    '#maxlength' => 1024,
    '#element_validate' => array('taxonomy_autocomplete_validate'),
  );

  return $element;
}

/**
 * Form element validate handler for taxonomy term autocomplete element.
 */
function taxonomy_autocomplete_validate($element, &$form_state) {
  // Autocomplete widgets do not send their tids in the form, so we must detect
  // them here and process them independently.
  $value = array();
  if ($tags = $element['#value']) {
    // Collect candidate vocabularies.
    $field = field_widget_field($element, $form_state);
    $vocabularies = array();
    foreach ($field['settings']['allowed_values'] as $tree) {
      if ($vocabulary = taxonomy_vocabulary_machine_name_load($tree['vocabulary'])) {
        $vocabularies[$vocabulary->vid] = $vocabulary;
      }
    }

    // Translate term names into actual terms.
    $typed_terms = drupal_explode_tags($tags);
    foreach ($typed_terms as $typed_term) {
      // See if the term exists in the chosen vocabulary and return the tid;
      // otherwise, create a new 'autocreate' term for insert/update.
      if ($possibilities = taxonomy_term_load_multiple(array(), array('name' => trim($typed_term), 'vid' => array_keys($vocabularies)))) {
        $term = array_pop($possibilities);
      }
      else {
        $vocabulary = reset($vocabularies);
        $term = array(
          'tid' => 'autocreate',
          'vid' => $vocabulary->vid,
          'name' => $typed_term,
          'vocabulary_machine_name' => $vocabulary->machine_name,
        );
      }
      $value[] = (array)$term;
    }
  }

  form_set_value($element, $value, $form_state);
}

/**
 * Implements hook_field_widget_error().
 */
function taxonomy_field_widget_error($element, $error, $form, &$form_state) {
  form_error($element, $error['message']);
}
/**
 * Implements hook_field_settings_form().
 */
function taxonomy_field_settings_form($field, $instance, $has_data) {
  // Get proper values for 'allowed_values_function', which is a core setting.
  $vocabularies = taxonomy_get_vocabularies();
  $options = array();
  foreach ($vocabularies as $vocabulary) {
    $options[$vocabulary->machine_name] = $vocabulary->name;
  }
  $form['allowed_values'] = array(
    '#tree' => TRUE,
  );

  foreach ($field['settings']['allowed_values'] as $delta => $tree) {
    $form['allowed_values'][$delta]['vocabulary'] = array(
      '#type' => 'select',
      '#title' => t('Vocabulary'),
      '#default_value' => $tree['vocabulary'],
      '#options' => $options,
      '#required' => TRUE,
      '#description' => t('The vocabulary which supplies the options for this field.'),
      '#disabled' => $has_data,
    );
    $form['allowed_values'][$delta]['parent'] = array(
      '#type' => 'value',
      '#value' => $tree['parent'],
    );
  }

  return $form;
}

/**
 * Implements hook_rdf_mapping().
 *
 * @return array
 *   The rdf mapping for vocabularies and terms.
 */
function taxonomy_rdf_mapping() {
  return array(
    array(
      'type' => 'taxonomy_term',
      'bundle' => RDF_DEFAULT_BUNDLE,
      'mapping' => array(
        'rdftype' => array('skos:Concept'),
        'name'   => array(
          'predicates' => array('rdfs:label', 'skos:prefLabel'),
        ),
        'description'   => array(
          'predicates' => array('skos:definition'),
        ),
        'vid'   => array(
          'predicates' => array('skos:inScheme'),
          'type' => 'rel',
        ),
        'parent'   => array(
          'predicates' => array('skos:broader'),
          'type' => 'rel',
        ),
      ),
    ),
    array(
      'type' => 'taxonomy_vocabulary',
      'bundle' => RDF_DEFAULT_BUNDLE,
      'mapping' => array(
        'rdftype' => array('skos:ConceptScheme'),
        'name'   => array(
          'predicates' => array('dc:title'),
        ),
        'description'   => array(
          'predicates' => array('rdfs:comment'),
        ),
      ),
    ),
  );
}

/**
 * @defgroup taxonomy_index Taxonomy indexing
 * @{
 * Functions to maintain taxonomy indexing.
 *
 * Taxonomy uses default field storage to store canonical relationships
 * between terms and fieldable entities. However h_update('taxonomy_term', $term);
    if (isset($term->parent)) {
      db_delete('taxonomy_term_hierarchy')
        ->condition('tid', $term->tid)
        ->execute();
    }
  }

  if (isset($term->parent)) {
    if (!is_array($term->parent)) {
      $term->parent = array($term->parent);
    }
    $query = db_insert('taxonomy_term_hierarchy')
      ->fields(array('tid', 'parent'));
    foreach ($term->parent as $parent) {
      if (is_array($parent)) {
        foreach ($parent as $tid) {
          $query->values(array(
            'tid' => $term->tid,
            'parent' => $tid
          ));
        }
      }
      else {
        $query->values(array(
          'tid' => $term->tid,
          'parent' => $parent
        ));
      }
    }
    $query->execute();
  }

  // Reset the taxonomy term static variables.
  taxonomy_terms_static_reset();

  // Invoke the taxonomy hooks.
  module_invoke_all("taxonomy_term_$op", $term);
  module_invoke_all("entity_$op", $term, 'taxonomy_term');
  unset($term->original);

  return $status;
}

/**
 * Delete a term.
 *
 * @param $tid
 *   The term ID.
 * @return
 *   Status constant indicating deletion.
 */
function taxonomy_term_delete($tid) {
  $transaction = db_transaction();
  try {
    $tids = array($tid);
    while ($tids) {
      $children_tids = $orphans = array();
      foreach ($tids as $tid) {
        // See if any of the term's children are about to be become orphans:
        if ($children = taxonomy_get_children($tid)) {
          foreach ($children as $child) {
            // If the term has multiple parents, we don't delete it.
            $parents = taxonomy_get_parents($child->tid);
            if (count($parents) == 1) {
              $orphans[] = $child->tid;
            }
          }
        }

        if ($term = taxonomy_term_load($tid)) {
          db_delete('taxonomy_term_data')
            ->condition('tid', $tid)
            ->execute();
          db_delete('taxonomy_term_hierarchy')
            ->condition('tid', $tid)
            ->execute();

          field_attach_delete('taxonomy_term', $term);
          module_invoke_all('taxonomy_term_delete', $term);
          module_invoke_all('entity_delete', $term, 'taxonomy_term');
          taxonomy_terms_static_reset();
        }
      }

      $tids = $orphans;
    }
    return SAVED_DELETED;
  }
  catch (Exception $e) {
    $transaction->rollback();
    watchdog_exception('taxonomy', $e);
    throw $e;
  }
}

/**
 * Generate an array for rendering the given term.
 *
 * @param $term
 *   A term object.
 * @param $view_mode
 *   View mode, e.g. 'full', 'teaser'...
 * @param $langcode
 *   (optional) A language code to use for rendering. Defaults to the global
 *   content language of the current request.
 *
 * @return
 *   An array as expected by drupal_render().
 */
function taxonomy_term_view($term, $view_mode = 'full', $langcode = NULL) {
  if (!isset($langcode)) {
    $langcode = $GLOBALS['language_content']->language;
  }

  field_attach_prepare_view('taxonomy_term', array($term->tid => $term), $view_mode, $langcode);
  entity_prepare_view('taxonomy_term', array($term->tid => $term), $langcode);

  $build = array(
    '#theme' => 'taxonomy_term',
    '#term' => $term,
    '#view_mode' => $view_mode,
    '#language' => $langcode,
  );

  $build += field_attach_view('taxonomy_term', $term, $view_mode, $langcode);

  // Add term description if the term has one.
  if (!empty($term->description)) {
    $build['description'] = array(
      '#markup' => check_markup($term->description, $term->format, '', TRUE),
      '#weight' => 0,
      '#prefix' => '<div class="taxonomy-term-description">',
      '#suffix' => '</div>',
    );
  }

  $build['#attached']['css'][] = drupal_get_path('module', 'taxonomy') . '/taxonomy.css';

  // Allow modules to modify the structured term.
  $type = 'taxonomy_term';
  drupal_alter(array('taxonomy_term_view', 'entity_view'), $build, $type);

  return $build;
}

/**
 * Process variables for taxonomy-term.tpl.php.
 */
function template_preprocess_taxonomy_term(&$variables) {
  $variaboken/flush-cache')),
    ),
  );
}

function token_type_load($token_type) {
  $info = token_get_info();
  return isset($info['types'][$token_type]) ? $info['types'][$token_type] : FALSE;
}

/**
 * Implements hook_theme().
 */
function token_theme() {
  return array(
    'tree_table' => array(
      'variables' => array('header' => array(), 'rows' => array(), 'attributes' => array(), 'empty' => '', 'caption' => ''),
      'file' => 'token.pages.inc',
    ),
    'token_tree' => array(
      'variables' => array('token_types' => array(), 'global_types' => TRUE, 'click_insert' => TRUE, 'show_restricted' => FALSE, 'recursion_limit' => 4),
      'file' => 'token.pages.inc',
    ),
  );
}

/**
 * Implements hook_library().
 */
function token_library() {
  // jQuery treeTable plugin.
  $libraries['treeTable'] = array(
    'title' => 'jQuery treeTable',
    'website' => 'http://plugins.jquery.com/project/treetable',
    'version' => '2.3.0',
    'js' => array(
      drupal_get_path('module', 'token') . '/jquery.treeTable.js' => array(),
    ),
    'css' => array(
      drupal_get_path('module', 'token') . '/jquery.treeTable.css' => array(),
    ),
  );

  return $libraries;
}

/**
 * Implements hook_form_alter().
 *
 * Adds a submit handler to forms which could affect the tokens available on
 * the site.
 */
function token_form_alter(&$form, $form_state, $form_id) {
  switch ($form_id) {
    // Profile field forms.
    case 'profile_field_form':
    case 'profile_field_delete':
    // User picture form.
    case 'user_admin_settings':
    // System date type form.
    // @todo Remove when http://drupal.org/node/1173706 is fixed.
    case 'system_add_date_format_type_form':
    case 'system_delete_date_format_type_form':
      $form += array('#submit' => array());
      array_unshift($form['#submit'], 'token_clear_cache');
      break;
  }
}

/**
 * Implements hook_field_info_alter().
 */
function token_field_info_alter(&$info) {
  $defaults = array(
    'taxonomy_term_reference' => 'taxonomy_term_reference_plain',
    'number_integer' => 'number_unformatted',
    'number_decimal' => 'number_unformatted',
    'number_float' => 'number_unformatted',
    'file' => 'file_url_plain',
    'image' => 'file_url_plain',
  );
  foreach ($defaults as $field_type => $default_token_formatter) {
    if (isset($info[$field_type])) {
      $info[$field_type] += array('default_token_formatter' => $default_token_formatter);
    }
  }
}

/**
 * Implements hook_field_display_alter().
 */
function token_field_display_alter(&$display, $context) {
  if ($context['view_mode'] == 'token') {
    $view_mode_settings = field_view_mode_settings($context['instance']['entity_type'], $context['instance']['bundle']);
    // If the token view mode fell back to the 'default' view mode, then
    // use the default token formatter.
    if (empty($view_mode_settings[$context['view_mode']]['custom_settings'])) {
      $field_type_info = field_info_field_types($context['field']['type']);
      if (!empty($field_type_info['default_token_formatter'])) {
        $display['type'] = $field_type_info['default_token_formatter'];

        $formatter_info = field_info_formatter_types($display['type']);
        $display['settings'] = isset($formatter_info['settings']) ? $formatter_info['settings'] : array();
        $display['settings']['label'] = 'hidden';
        $display['module'] = $formatter_info['module'];
      }
    }
  }
}

/**
 * Implements hook_field_create_instance().
 */
function token_field_create_instance($instance) {
  token_clear_cache();
}

/**
 * Implements hook_field_update_instance().
 */
function token_field_update_instance($instance) {
  token_clear_cache();
}

/**
 * Implements hook_field_delete_instance().
 */
function token_field_delete_instance($instance) {
  token_clear_cache();
}

/**
 * Clear token caches and static variables.
 */
function token_clear_cache() {
  cache_clear_all('*', 'cache_token', TRUE);
  drupal_static_reset('token_get_info');
  drupal_static_reset('token_get_global_token_types');
  drupal_static_reset('token_get_entity_mapping'); *   A taxonomy term ID.
 * @param $vid
 *   An optional vocabulary ID to restrict the child search.
 *
 * @return
 *   An array of term objects that are the children of the term $tid, or an
 *   empty array when no children exist.
 */
function taxonomy_get_children($tid, $vid = 0) {
  $children = &drupal_static(__FUNCTION__, array());

  if ($tid && !isset($children[$tid])) {
    $query = db_select('taxonomy_term_data', 't');
    $query->join('taxonomy_term_hierarchy', 'h', 'h.tid = t.tid');
    $query->addField('t', 'tid');
    $query->condition('h.parent', $tid);
    if ($vid) {
      $query->condition('t.vid', $vid);
    }
    $query->addTag('term_access');
    $query->orderBy('t.weight');
    $query->orderBy('t.name');
    $tids = $query->execute()->fetchCol();
    $children[$tid] = taxonomy_term_load_multiple($tids);
  }

  return isset($children[$tid]) ? $children[$tid] : array();
}

/**
 * Create a hierarchical representation of a vocabulary.
 *
 * @param $vid
 *   Which vocabulary to generate the tree for.
 * @param $parent
 *   The term ID under which to generate the tree. If 0, generate the tree
 *   for the entire vocabulary.
 * @param $max_depth
 *   The number of levels of the tree to return. Leave NULL to return all levels.
 * @param $load_entities
 *   If TRUE, a full entity load will occur on the term objects. Otherwise they
 *   are partial objects queried directly from the {taxonomy_term_data} table to
 *   save execution time and memory consumption when listing large numbers of
 *   terms. Defaults to FALSE.
 *
 * @return
 *   An array of all term objects in the tree. Each term object is extended
 *   to have "depth" and "parents" attributes in addition to its normal ones.
 *   Results are statically cached. Term objects will be partial or complete
 *   depending on the $load_entities parameter.
 */
function taxonomy_get_tree($vid, $parent = 0, $max_depth = NULL, $load_entities = FALSE) {
  $children = &drupal_static(__FUNCTION__, array());
  $parents = &drupal_static(__FUNCTION__ . ':parents', array());
  $terms = &drupal_static(__FUNCTION__ . ':terms', array());

  // We cache trees, so it's not CPU-intensive to call get_tree() on a term
  // and its children, too.
  if (!isset($children[$vid])) {
    $children[$vid] = array();
    $parents[$vid] = array();
    $terms[$vid] = array();

    $query = db_select('taxonomy_term_data', 't');
    $query->join('taxonomy_term_hierarchy', 'h', 'h.tid = t.tid');
    $result = $query
      ->addTag('translatable')
      ->addTag('term_access')
      ->fields('t')
      ->fields('h', array('parent'))
      ->condition('t.vid', $vid)
      ->orderBy('t.weight')
      ->orderBy('t.name')
      ->execute();

    foreach ($result as $term) {
      $children[$vid][$term->parent][] = $term->tid;
      $parents[$vid][$term->tid][] = $term->parent;
      $terms[$vid][$term->tid] = $term;
    }
  }

  // Load full entities, if necessary. The entity controller statically
  // caches the results.
  if ($load_entities) {
    $term_entities = taxonomy_term_load_multiple(array_keys($terms[$vid]));
  }

  $max_depth = (!isset($max_depth)) ? count($children[$vid]) : $max_depth;
  $tree = array();

  // Keeps track of the parents we have to process, the last entry is used
  // for the next processing step.
  $process_parents = array();
  $process_parents[] = $parent;

  // Loops over the parent terms and adds its children to the tree array.
  // Uses a loop instead of a recursion, because it's more efficient.
  while (count($process_parents)) {
    $parent = array_pop($process_parents);
    // The number of parents determines the current depth.
    $depth = count($process_parents);
    if ($max_depth > $depth && !empty($children[$vid][$parent])) {
      $has_children = FALSE;
      $child = current($children[$vid][$parent]);
      do {
        if (empty($child)) {
          break;
        }
        $term = $load_entities ? $term_entities[$child] : $terms[$vid][$child];
        if (count($parents[$vid][$term->tid]) > 1) {
          // We have a term with multi parents here. Clone the term,
          // so that the depth attribute remains correct.
          $term = clone $term;
        }
        $term->depth = $depth;
        unset($term->parent);
        $term->parents = $parents[$vid][$term->tid];
        $tree[] = $term;
        if (!empty($children[$vid][$term->tid])) {
          $has_children = TRUE;

          // We have to continue with this parent later.
          $process_parents[] = $parent;
          // Use the current term as parent for the next iteration.
          $process_parents[] = $term->tid;

          // Reset pointers for child lists because we step in there more often
          // with multi parents.
          reset($children[$vid][$term->tid]);
          // Move pointer so that we get the correct term the next time.
          next($children[$vid][$parent]);
          break;
        }
      } while ($child = next($children[$vid][$parent]));

      if (!$has_children) {
        // We processed all terms in this hierarchy-level, reset pointer
        // so that this function works the next time it gets called.
        reset($children[$vid][$parent]);
      }
    }
  }

  return $tree;
}

/**
 * Try to map a string to an existing term, as for glossary use.
 *
 * Provides a case-insensitive and trimmed mapping, to maximize the
 * likelihood of a successful match.
 *
 * @param name
 *   Name of the term to search for.
 *
 * @return
 *   An array of matching term objects.
 */
function taxonomy_get_term_by_name($name) {
  return taxonomy_term_load_multiple(array(), array('name' => trim($name)));
}

/**
 * Controller class for taxonomy terms.
 *
 * This extends the DrupalDefaultEntityController class. Only alteration is
 * that we match the condition on term name case-independently.
 */
class TaxonomyTermController extends DrupalDefaultEntityController {

  protected function buildQuery($ids, $conditions = array(), $revision_id = FALSE) {
    $query = parent::buildQuery($ids, $conditions, $revision_id);
    $query->addTag('translatable');
    $query->addTag('term_access');
    // When name is passed as a condition use LIKE.
    if (isset($conditions['name'])) {
      $query_conditions = &$query->conditions();
      foreach ($query_conditions as $key => $condition) {
        if ($condition['field'] == 'base.name') {
          $query_conditions[$key]['operator'] = 'LIKE';
          $query_conditions[$key]['value'] = db_like($query_conditions[$key]['value']);
        }
      }
    }
    // Add the machine name field from the {taxonomy_vocabulary} table.
    $query->innerJoin('taxonomy_vocabulary', 'v', 'base.vid = v.vid');
    $query->addField('v', 'machine_name', 'vocabulary_machine_name');
    return $query;
  }

  protected function cacheGet($ids, $conditions = array()) {
    $terms = parent::cacheGet($ids, $conditions);
    // Name matching is case insensitive, note that with some collations
    // LOWER() and drupal_strtolower() may return different results.
    foreach ($terms as $term) {
      $term_values = (array) $term;
      if (isset($conditions['name']) && drupal_strtolower($conditions['name'] != drupal_strtolower($term_values['name']))) {
        unset($terms[$term->tid]);
      }
    }
    return $terms;
  }
}

/**
 * Controller class for taxonomy vocabularies.
 *
 * This extends the DrupalDefaultEntityController class, adding required
 * special handling for taxonomy vocabulary objects.
 */
class TaxonomyVocabularyController extends DrupalDefaultEntityController {

  protected function buildQuery($ids, $conditions = array(), $revision_id = FALSE) {
    $query = parent::buildQuery($ids, $conditions, $revision_id);
    $query->addTag('translatable');
    $query->orderBy('base.weight');
    $query->orderBy('base.name');
    return $query;
  }
}

/**
 * Load multiple taxonomy terms based on certain conditions.
 *
 * This function should be used whenever you need to load more than one term
 * from the database. Terms are loaded into memory and will not require
 * database access if loaded again during the same page request.
 *
 * @see entity_load()
 * @see EntityFieldQuery
 *
 * @param $tids
 *   An array of taxonomy term IDs.
 * @param $conditions
 *   (deprecated) An associative array of conditions on the {taxonomy_term}
 *   table, where the keys are the database fields and the values are the
 *   values those fields must have. Instead, it is preferable to use
 *   EntityFieldQuery to retrieve a list of entity IDs loadable by
 *   this function.
 *
 * @return
 *   An array of term objects, indexed by tid. When no results are found, an
 *   empty array is returned.
 *
 * @todo Remove $conditions in Drupal 8.
 */
function taxonomy_term_load_multiple($tids = array(), $conditions = array()) {
  return entity_load('taxonomy_term', $tids, $conditions);
}

/**
 * Load multiple taxonomy vocabularies based on certain conditions.
 *
 * This function should be used whenever you need to load more than one
 * vocabulary from the database. Terms are loaded into memory and will not
 * require database access if loaded again during the same page request.
 *
 * @see entity_load()
 *
 * @param $vids
 *  An array of taxonomy vocabulary IDs, or FALSE to load all vocabularies.
 * @param $conditions
 *  An array of conditions to add to the query.
 *
 * @return
 *  An array of vocabulary objects, indexed by vid.
 */
function taxonomy_vocabulary_load_multiple($vids = array(), $conditions = array()) {
  return entity_load('taxonomy_vocabulary', $vids, $conditions);
}

/**
 * Return the vocabulary object matching a vocabulary ID.
 *
 * @param $vid
 *   The vocabulary's ID.
 *
 * @return
 *   The vocabulary object with all of its metadata, if exists, FALSE otherwise.
 *   Results are statically cached.
 */
function taxonomy_vocabulary_load($vid) {
  $vocabularies = taxonomy_vocabulary_load_multiple(array($vid));
  return reset($vocabularies);
}

/**
 * Return the vocabulary object matching a vocabulary machine name.
 *
 * @param $name
 *   The vocabulary's machine name.
 *
 * @return
 *   The vocabulary object with all of its metadata, if exists, FALSE otherwise.
 *   Results are statically cached.
 */
function taxonomy_vocabulary_machine_name_load($name) {
  $vocabularies = taxonomy_vocabulary_load_multiple(NULL, array('machine_name' => $name));
  return reset($vocabularies);
}

/**
 * Return the term object matching a term ID.
 *
 * @param $tid
 *   A term's ID
 *
 * @return
 *   A term object. Results are statically cached.
 */
function taxonomy_term_load($tid) {
  if (!is_numeric($tid)) {
    return FALSE;
  }
  $term = taxonomy_term_load_multiple(array($tid), array());
  return $term ? $term[$tid] : FALSE;
}

/**
 * Helper function for array_map purposes.
 */
function _taxonomy_get_tid_from_term($term) {
  return $term->tid;
}

/**
 * Implodes a list of tags of a certain vocabulary into a string.
 *
 * @see drupal_explode_tags()
 */
function taxonomy_implode_tags($tags, $vid = NULL) {
  $typed_tags = array();
  foreach ($tags as $tag) {
    // Extract terms belonging to the vocabulary in question.
    if (!isset($vid) || $tag->vid == $vid) {
      // Make sure we have a completed loaded taxonomy term.
      if (isset($tag->name)) {
        // Commas and quotes in tag names are special cases, so encode 'em.
        if (strpos($tag->name, ',') !== FALSE || strpos($tag->name, '"') !== FALSE) {
          $typed_tags[] = '"' . str_replace('"', '""', $tag->name) . '"';
        }
        else {
          $typed_tags[] = $tag->name;
        }
      }
    }
  }
  return implode(', ', $typed_tags);
}

/**
 * Implements hook_field_info().
 *
 * Field settings:
 * - allowed_values: a list array of one or more vocabulary trees:
 *   - vocabulary: a vocabulary machine name.
 *   - parent: a term ID of a term whose children are allowed. This should be
 *     '0' if all terms in a vocabulary are allowed. The allowed values do not
 *     include the parent term.
 *
 */
function taxonomy_field_info() {
  return array(
    'taxonomy_term_reference' => array(
      'label' => t('Term reference'),
      'description' => t('This field stores a reference to a taxonomy term.'),
      'default_widget' => 'options_select',
      'default_formatter' => 'taxonomy_term_reference_link',
      'settings' => array(
        'allowed_values' => array(
          array(
            'vocabulary' => '',
            'parent' => '0',
          ),
        ),
      ),
    ),
  );
}

/**
 * Implements hook_field_widget_info().
 */
function taxonomy_field_widget_info() {
  return array(
    'taxonomy_autocomplete' => array(
      'label' => t('Autocomplete term widget (tagging)'),
      'field types' => array('taxonomy_term_reference'),
      'settings' => array(
        'size' => 60,
        'autocomplete_path' => 'taxonomy/autocomplete',
      ),
      'behaviors' => array(
        'multiple values' => FIELD_BEHAVIOR_CUSTOM,
      ),
    ),
  );
}

/**
 * Implements hook_field_widget_info_alter().
 */
function taxonomy_field_widget_info_alter(&$info) {
  $info['options_select']['field types'][] = 'taxonomy_term_reference';
  $info['options_buttons']['field types'][] = 'taxonomy_term_reference';
}

/**
 * Implements hook_options_list().
 */
function taxonomy_options_list($field) {
  $function = !empty($field['settings']['options_list_callback']) ? $field['settings']['options_list_callback'] : 'taxonomy_allowed_values';
  return $function($field);
}

/**
 * Implements hook_field_validate().
 *
 * Taxonomy field settings allow for either a single vocabulary ID, multiple
 * vocabulary IDs, or sub-trees of a vocabulary to be specified as allowed
 * values, although only the first of these is supported via the field UI.
 * Confirm that terms entered as values meet at least one of these conditions.
 *
 * Possible error codes:
 * - 'taxonomy_term_illegal_value': The value is not part of the list of allowed values.
 */
function taxonomy_field_validate($entity_type, $entity, $field, $instance, $langcode, $items, &$errors) {
  // Build an array of existing term IDs so they can be loaded with
  // taxonomy_term_load_multiple();
  foreach ($items as $delta => $item) {
    if (!empty($item['tid']) && $item['tid'] != 'autocreate') {
      $tids[] = $item['tid'];
    }
  }
  if (!empty($tids)) {
    $terms = taxonomy_term_load_multiple($tids);

    // Check each existing item to ensure it can be found in the
    // allowed values for this field.
    foreach ($items as $delta => $item) {
      $validate = TRUE;
      if (!empty($item['tid']) && $item['tid'] != 'autocreate') {
        $validate = FALSE;
        foreach ($field['settings']['allowed_values'] as $settings) {
          // If no parent is specified, check if the term is in the vocabulary.
          if (isset($settings['vocabulary']) && empty($settings['parent'])) {
            if ($settings['vocabulary'] == $terms[$item['tid']]->vocabulary_machine_name) {
              $validate = TRUE;
              break;
            }
          }
          // If a parent is specified, then to validate it must appear in the
          // array returned by taxonomy_get_parents_all().
          elseif (!empty($settings['parent'])) {
            $ancestors = taxonomy_get_parents_all($item['tid']);
            foreach ($ancestors as $ancestor) {
              if ($ancestor->tid == $settings['parent']) {
                $validate = TRUE;
                break 2;
              }
            }
          }
        }
      }
      if (!$validate) {
        $errors[$field['field_name']][$langcode][$delta][] = array(
          'error' => 'taxonomy_term_reference_illegal_value',
          'message' => t('%name: illegal value.', array('%name' => $instance['label'])),
        );
      }
    }
  }
}

/**
 * Implements hook_field_is_empty().
 */
function taxonomy_field_is_empty($item, $field) {
  if (!is_array($item) || (empty($item['tid']) && (string) $item['tid'] !== '0')) {
    return TRUE;
  }
  return FALSE;
}

/**
 * Implements hook_field_formatter_info().
 */
function taxonomy_field_formatter_info() {
  return array(
    'taxonomy_term_reference_link' => array(
      'label' => t('Link'),
      'field types' => array('taxonomy_term_reference'),
    ),
    'taxonomy_term_reference_plain' => array(
      'label' => t('Plain text'),
      'field types' => array('taxonomy_term_reference'),
    ),
  );
}

/**
 * Implements hook_field_formatter_view().
 */
function taxonomy_field_formatter_view($entity_type, $entity, $field, $instance, $langcode, $items, $display) {
  $element = array();

  // Terms whose tid is 'autocreate' do not exist
  // yet and $item['taxonomy_term'] is not set. Theme such terms as
  // just their name.

  switch ($display['type']) {
    case 'taxonomy_term_reference_link':
      foreach ($items as $delta => $item) {
        if ($item['tid'] == 'autocreate') {
          $element[$delta] = array(
            '#markup' => check_plain($item['name']),
          );
        }
        else {
          $term = $item['taxonomy_term'];
          $uri = entity_uri('taxonomy_term', $term);
          $element[$delta] = array(
            '#type' => 'link',
            '#title' => $term->name,
            '#href' => $uri['path'],
            '#options' => $uri['options'],
          );
        }
      }
      break;

    case 'taxonomy_term_reference_plain':
      foreach ($items as $delta => $item) {
        $name = ($item['tid'] != 'autocreate' ? $item['taxonomy_term']->name : $item['name']);
        $element[$delta] = array(
          '#markup' => check_plain($name),
        );
      }
      break;
  }

  return $element;
}

/**
 * Returns the set of valid terms for a taxonomy field.
 *
 * @param $field
 *   The field definition.
 * @return
 *   The array of valid terms for this field, keyed by term id.
 */
function taxonomy_allowed_values($field) {
  $options = array();
  foreach ($field['settings']['allowed_values'] as $tree) {
    if ($vocabulary = taxonomy_vocabulary_machine_name_load($tree['vocabulary'])) {
      if ($terms = taxonomy_get_tree($vocabulary->vid, $tree['parent'])) {
        foreach ($terms as $term) {
          $options[$term->tid] = str_repeat('-', $term->depth) . $term->name;
        }
      }
    }
  }
  return $options;
}

/**
 * Implements hook_field_formatter_prepare_view().
 *
 * This preloads all taxonomy terms for multiple loaded objects at once and
 * unsets values for invalid terms that do not exist.
 */
function taxonomy_field_formatter_prepare_view($entity_type, $entities, $field, $instances, $langcode, &$items, $displays) {
  $tids = array();

  // Collect every possible term attached to any of the fieldable entities.
  foreach ($entities as $id => $entity) {
    foreach ($items[$id] as $delta => $item) {
      // Force the array key to prevent duplicates.
      if ($item['tid'] != 'autocreate') {
        $tids[$item['tid']] = $item['tid'];
      }
    }
  }
  if ($tids) {
    $terms = taxonomy_term_load_multiple($tids);

    // Iterate through the fieldable entities again to attach the loaded term data.
    foreach ($entities as $id => $entity) {
      $rekey = FALSE;

      foreach ($items[$id] as $delta => $item) {
        // Check whether the taxonomy term field instance value could be loaded.
        if (isset($terms[$item['tid']])) {
          // Replace the instance value with the term data.
          $items[$id][$delta]['taxonomy_term'] = $terms[$item['tid']];
        }
        // Terms to be created are not in $terms, but are still legitimate.
        else if ($item['tid'] == 'autocreate') {
          // Leave the item in place.
        }
        // Otherwise, unset the instance value, since the term does not exist.
        else {
          unset($items[$id][$delta]);
          $rekey = TRUE;
        }
      }

      if ($rekey) {
        // Rekey the items array.
        $items[$id] = array_values($items[$id]);
      }
    }
  }
}

/**
 * Title callback for term pages.
 *
 * @param $term
 *   A term object.
 *
 * @return
 *   The term name to be used as the page title.
 */
function taxonomy_term_title($term) {
  return $term->name;
}

/**
 * Implements hook_field_widget_form().
 */
function taxonomy_field_widget_form(&$form, &$form_state, $field, $instance, $langcode, $items, $delta, $element) {
  $tags = array();
  foreach ($items as $item) {
    $tags[$item['tid']] = isset($item['taxonomy_term']) ? $item['taxonomy_term'] : taxonomy_term_load($item['tid']);
  }

  $element += array(
    '#type' => 'textfield',
    '#default_value' => taxonomy_implode_tags($tags),
    '#autocomplete_path' => $instance['widget']['settings']['autocomplete_path'] . '/' . $field['field_name'],
    '#size' => $instance['widget']['settings']['size'],
    '#maxlength' => 1024,
    '#element_validate' => array('taxonomy_autocomplete_validate'),
  );

  return $element;
}

/**
 * Form element validate handler for taxonomy term autocomplete element.
 */
function taxonomy_autocomplete_validate($element, &$form_state) {
  // Autocomplete widgets do not send their tids in the form, so we must detect
  // them here and process them independently.
  $value = array();
  if ($tags = $element['#value']) {
    // Collect candidate vocabularies.
    $field = field_widget_field($element, $form_state);
    $vocabularies = array();
    foreach ($field['settings']['allowed_values'] as $tree) {
      if ($vocabulary = taxonomy_vocabulary_machine_name_load($tree['vocabulary'])) {
        $vocabularies[$vocabulary->vid] = $vocabulary;
      }
    }

    // Translate term names into actual terms.
    $typed_terms = drupal_explode_tags($tags);
    foreach ($typed_terms as $typed_term) {
      // See if the term exists in the chosen vocabulary and return the tid;
      // otherwise, create a new 'autocreate' term for insert/update.
      if ($possibilities = taxonomy_term_load_multiple(array(), array('name' => trim($typed_term), 'vid' => array_keys($vocabularies)))) {
        $term = array_pop($possibilities);
      }
      else {
        $vocabulary = reset($vocabularies);
        $term = array(
          'tid' => 'autocreate',
          'vid' => $vocabulary->vid,
          'name' => $typed_term,
          'vocabulary_machine_name' => $vocabulary->machine_name,
        );
      }
      $value[] = (array)$term;
    }
  }

  form_set_value($element, $value, $form_state);
}

/**
 * Implements hook_field_widget_error().
 */
function taxonomy_field_widget_error($element, $error, $form, &$form_state) {
  form_error($element, $error['message']);
}
/**
 * Implements hook_field_settings_form().
 */
function taxonomy_field_settings_form($field, $instance, $has_data) {
  // Get proper values for 'allowed_values_function', which is a core setting.
  $vocabularies = taxonomy_get_vocabularies();
  $options = array();
  foreach ($vocabularies as $vocabulary) {
    $options[$vocabulary->machine_name] = $vocabulary->name;
  }
  $form['allowed_values'] = array(
    '#tree' => TRUE,
  );

  foreach ($field['settings']['allowed_values'] as $delta => $tree) {
    $form['allowed_values'][$delta]['vocabulary'] = array(
      '#type' => 'select',
      '#title' => t('Vocabulary'),
      '#default_value' => $tree['vocabulary'],
      '#options' => $options,
      '#required' => TRUE,
      '#description' => t('The vocabulary which supplies the options for this field.'),
      '#disabled' => $has_data,
    );
    $form['allowed_values'][$delta]['parent'] = array(
      '#type' => 'value',
      '#value' => $tree['parent'],
    );
  }

  return $form;
}

/**
 * Implements hook_rdf_mapping().
 *
 * @return array
 *   The rdf mapping for vocabularies and terms.
 */
function taxonomy_rdf_mapping() {
  return array(
    array(
      'type' => 'taxonomy_term',
      'bundle' => RDF_DEFAULT_BUNDLE,
      'mapping' => array(
        'rdftype' => array('skos:Concept'),
        'name'   => array(
          'predicates' => array('rdfs:label', 'skos:prefLabel'),
        ),
        'description'   => array(
          'predicates' => array('skos:definition'),
        ),
        'vid'   => array(
          'predicates' => array('skos:inScheme'),
          'type' => 'rel',
        ),
        'parent'   => array(
          'predicates' => array('skos:broader'),
          'type' => 'rel',
        ),
      ),
    ),
    array(
      'type' => 'taxonomy_vocabulary',
      'bundle' => RDF_DEFAULT_BUNDLE,
      'mapping' => array(
        'rdftype' => array('skos:ConceptScheme'),
        'name'   => array(
          'predicates' => array('dc:title'),
        ),
        'description'   => array(
          'predicates' => array('rdfs:comment'),
        ),
      ),
    ),
  );
}

/**
 * @defgroup taxonomy_index Taxonomy indexing
 * @{
 * Functions to maintain taxonomy indexing.
 *
 * Taxonomy uses default field storage to store canonical relationships
 * between terms and fieldable entities. However its most common use case
 * requires listing all content associated with a term or group of terms
 * sorted by creation date. To avoid slow queries due to joining across
 * multiple node and field tables with various conditions and order by criteria,
 * we maintain a denormalized table with all relationships between terms,
 * published nodes and common sort criteria such as sticky and created.
 * This is used as a lookup table by taxonomy_select_nodes(). When using other
 * field storage engines or alternative methods of denormalizing this data
 * you should set the variable 'taxonomy_maintain_index_table' to FALSE
 * to avoid unnecessary writes in SQL.
 */

/**
 * Implements hook_field_presave().
 *
 * Create any new terms defined in a freetagging vocabulary.
 */
function taxonomy_field_presave($entity_type, $entity, $field, $instance, $langcode, &$items) {
  foreach ($items as $delta => $item) {
    if ($item['tid'] == 'autocreate') {
      $term = (object) $item;
      unset($term->tid);
      taxonomy_term_save($term);
      $items[$delta]['tid'] = $term->tid;
    }
  }
}

/**
 * Implements hook_field_insert().
 */
function taxonomy_field_insert($entity_type, $entity, $field, $instance, $langcode, &$items) {
  // We maintain a denor malicious attempt to alter protected user fields.', array(), WATCHDOG_WARNING);
        return;
      }
    }
  }

  return $operations;
}

/**
 * Callback function for admin mass unblocking users.
 */
function user_user_operations_unblock($accounts) {
  $accounts = user_load_multiple($accounts);
  foreach ($accounts as $account) {
    // Skip unblocking user if they are already unblocked.
    if ($account !== FALSE && $account->status == 0) {
      user_save($account, array('status' => 1));
    }
  }
}

/**
 * Callback function for admin mass blocking users.
 */
function user_user_operations_block($accounts) {
  $accounts = user_load_multiple($accounts);
  foreach ($accounts as $account) {
    // Skip blocking user if they are already blocked.
    if ($account !== FALSE && $account->status == 1) {
      // For efficiency manually save the original account before applying any
      // changes.
      $account->original = clone $account;
      user_save($account, array('status' => 0));
    }
  }
}

/**
 * Callback function for admin mass adding/deleting a user role.
 */
function user_multiple_role_edit($accounts, $operation, $rid) {
  // The role name is not necessary as user_save() will reload the user
  // object, but some modules' hook_user() may look at this first.
  $role_name = db_query('SELECT name FROM {role} WHERE rid = :rid', array(':rid' => $rid))->fetchField();

  switch ($operation) {
    case 'add_role':
      $accounts = user_load_multiple($accounts);
      foreach ($accounts as $account) {
        // Skip adding the role to the user if they already have it.
        if ($account !== FALSE && !isset($account->roles[$rid])) {
          $roles = $account->roles + array($rid => $role_name);
          // For efficiency manually save the original account before applying
          // any changes.
          $account->original = clone $account;
          user_save($account, array('roles' => $roles));
        }
      }
      break;
    case 'remove_role':
      $accounts = user_load_multiple($accounts);
      foreach ($accounts as $account) {
        // Skip removing the role from the user if they already don't have it.
        if ($account !== FALSE && isset($account->roles[$rid])) {
          $roles = array_diff($account->roles, array($rid => $role_name));
          // For efficiency manually save the original account before applying
          // any changes.
          $account->original = clone $account;
          user_save($account, array('roles' => $roles));
        }
      }
      break;
  }
}

function user_multiple_cancel_confirm($form, &$form_state) {
  $edit = $form_state['input'];

  $form['accounts'] = array('#prefix' => '<ul>', '#suffix' => '</ul>', '#tree' => TRUE);
  $accounts = user_load_multiple(array_keys(array_filter($edit['accounts'])));
  foreach ($accounts as $uid => $account) {
    // Prevent user 1 from being canceled.
    if ($uid <= 1) {
      continue;
    }
    $form['accounts'][$uid] = array(
      '#type' => 'hidden',
      '#value' => $uid,
      '#prefix' => '<li>',
      '#suffix' => check_plain($account->name) . "</li>\n",
    );
  }

  // Output a notice that user 1 cannot be canceled.
  if (isset($accounts[1])) {
    $redirect = (count($accounts) == 1);
    $message = t('The user account %name cannot be cancelled.', array('%name' => $accounts[1]->name));
    drupal_set_message($message, $redirect ? 'error' : 'warning');
    // If only user 1 was selected, redirect to the overview.
    if ($redirect) {
      drupal_goto('admin/people');
    }
  }

  $form['operation'] = array('#type' => 'hidden', '#value' => 'cancel');

  module_load_include('inc', 'user', 'user.pages');
  $form['user_cancel_method'] = array(
    '#type' => 'item',
    '#title' => t('When cancelling these accounts'),
  );
  $form['user_cancel_method'] += user_cancel_methods();
  // Remove method descriptions.
  foreach (element_children($form['user_cancel_method']) as $element) {
    unset($form['user_cancel_method'][$element]['#description']);
  }

  // Allow to send the account cancellation confirmation mail.
  $form['user_cancel_confirm'] = array(
    '#type' => 'checkbox',
    '#title' => t('Require e-mail confirmation to cancel account.'),
    '#default_value' => FALSE,
    '#description' => t('When enabled, the user must confirm the account cancellation via e-mail.'),
  );
  // Also allow to send account canceled notification mail, if enabled.
  $form['user_cancel_notify'] = array(
    '#type' => 'checkbox',
    '#title' => t('Notify user when account is canceled.'),
    '#default_value' => FALSE,
    '#access' => variable_get('user_mail_status_canceled_notify', FALSE),
    '#description' => t('When enabled, the user will receive an e-mail notification after the account has been cancelled.'),
  );

  return confirm_form($form,
                      t('Are you sure you want to cancel these user accounts?'),
                      'admin/people', t('This action cannot be undone.'),
                      t('Cancel accounts'), t('Cancel'));
}

/**
 * Submit handler for mass-account cancellation form.
 *
 * @see user_multiple_cancel_confirm()
 * @see user_cancel_confirm_form_submit()
 */
function user_multiple_cancel_confirm_submit($form, &$form_state) {
  global $user;

  if ($form_state['values']['confirm']) {
    foreach ($form_state['values']['accounts'] as $uid => $value) {
      // Prevent programmatic form submissions from cancelling user 1.
      if ($uid <= 1) {
        continue;
      }
      // Prevent user administrators from deleting themselves without confirmation.
      if ($uid == $user->uid) {
        $admin_form_state = $form_state;
        unset($admin_form_state['values']['user_cancel_confirm']);
        $admin_form_state['values']['_account'] = $user;
        user_cancel_confirm_form_submit(array(), $admin_form_state);
      }
      else {
        user_cancel($form_state['values'], $uid, $form_state['values']['user_cancel_method']);
      }
    }
  }
  $form_state['redirect'] = 'admin/people';
}

/**
 * Retrieve a list of all user setting/information categories and sort them by weight.
 */
function _user_categories() {
  $categories = module_invoke_all('user_categories');
  usort($categories, '_user_sort');

  return $categories;
}

function _user_sort($a, $b) {
  $a = (array) $a + array('weight' => 0, 'title' => '');
  $b = (array) $b + array('weight' => 0, 'title' => '');
  return $a['weight'] < $b['weight'] ? -1 : ($a['weight'] > $b['weight'] ? 1 : ($a['title'] < $b['title'] ? -1 : 1));
}

/**
 * List user administration filters that can be applied.
 */
function user_filters() {
  // Regular filters
  $filters = array();
  $roles = user_roles(TRUE);
  unset($roles[DRUPAL_AUTHENTICATED_RID]); // Don't list authorized role.
  if (count($roles)) {
    $filters['role'] = array(
      'title' => t('role'),
      'field' => 'ur.rid',
      'options' => array(
        '[any]' => t('any'),
      ) + $roles,
    );
  }

  $options = array();
  foreach (module_implements('permission') as $module) {
    $function = $module . '_permission';
    if ($permissions = $function('permission')) {
      asort($permissions);
      foreach ($permissions as $permission => $description) {
        $options[t('@module module', array('@module' => $module))][$permission] = t($permission);
      }
    }
  }
  ksort($options);
  $filters['permission'] = array(
    'title' => t('permission'),
    'options' => array(
      '[any]' => t('any'),
    ) + $options,
  );

  $filters['status'] = array(
    'title' => t('status'),
    'field' => 'u.status',
    'options' => array(
      '[any]' => t('any'),
      1 => t('active'),
      0 => t('blocked'),
    ),
  );
  return $filters;
}

/**
 * Extends a query object for user administration filters based on session.
 *
 * @param $query
 *   Query object that should be filtered.
 */
function user_build_filter_query(SelectQuery $query) {
  $filters = user_filters();
  // Extend Query with filter conditions.
  foreach (isset($_SESSION['user_overview_filter']) ? $_SESSION['user_overview_filter'] : array() as $filter) {
    list($key, $value) = $filter;
    // This checks to see if this permission fig the view.
 */
function views_ui_cache_load($name) {
  ctools_include('object-cache');
  views_include('view');
  $view = ctools_object_cache_get('view', $name);
  $original_view = views_get_view($name);

  if (empty($view)) {
    $view = $original_view;
    if (!empty($view)) {
      // Check to see if someone else is already editing this view.
      $view->locked = ctools_object_cache_test('view', $view->name);
      // Set a flag to indicate that this view is being edited.
      // This flag will be used e.g. to determine whether strings
      // should be localized.
      $view->editing = TRUE;
    }
  }
  else {
    // Keep disabled/enabled status real.
    if ($original_view) {
      $view->disabled = !empty($original_view->disabled);
    }
  }

  if (empty($view)) {
    return FALSE;
  }

  else {
    return $view;
  }
}

/**
 * Specialized cache function to add a flag to our view, include an appropriate
 * include, and cache more easily.
 */
function views_ui_cache_set(&$view) {
  if (!empty($view->locked)) {
    drupal_set_message(t('Changes cannot be made to a locked view.'), 'error');
    return;
  }
  ctools_include('object-cache');
  $view->changed = TRUE; // let any future object know that this view has changed.

  if (isset($view->current_display)) {
    // Add the knowledge of the changed display, too.
    $view->changed_display[$view->current_display] = TRUE;
    unset($view->current_display);
  }

  // Unset handlers; we don't want to write these into the cache
  unset($view->display_handler);
  unset($view->default_display);
  $view->query = NULL;
  foreach (array_keys($view->display) as $id) {
    unset($view->display[$id]->handler);
    unset($view->display[$id]->default_display);
  }
  ctools_object_cache_set('view', $view->name, $view);
}


/**
 * Specialized menu callback to load a view that is only a default
 * view.
 */
function views_ui_default_load($name) {
  $view = views_get_view($name);
  if ($view->type == t('Default')) {
    return $view;
  }

  return FALSE;
}

/**
 * Theme preprocess for views-view.tpl.php.
 */
function views_ui_preprocess_views_view(&$vars) {
  $view = $vars['view'];
  if (!empty($view->views_ui_context) && module_exists('contextual')) {
    $view->hide_admin_links = TRUE;
    foreach (array('title', 'header', 'exposed', 'rows', 'pager', 'more', 'footer', 'empty', 'attachment_after', 'attachment_before') as $section) {
      if (!empty($vars[$section])) {
        $vars[$section] = array(
          '#theme' => 'views_ui_view_preview_section',
          '#view' => $view,
          '#section' => $section,
          '#content' => $vars[$section],
          '#theme_wrappers' => array('views_container'),
          '#attributes' => array('class' => 'contextual-links-region'),
        );
        $vars[$section] = drupal_render($vars[$section]);
      }
    }
  }
}

/**
 * Theme preprocess for theme_views_ui_view_preview_section().
 *
 * @TODO
 *    Perhaps move this to includes/admin.inc or theme/theme.inc
 */
function template_preprocess_views_ui_view_preview_section(&$vars) {
  switch ($vars['section']) {
    case 'title':
      $vars['title'] = t('Title');
      $links = views_ui_view_preview_section_display_category_links($vars['view'], 'title', $vars['title']);
      break;
    case 'header':
      $vars['title'] = t('Header');
      $links = views_ui_view_preview_section_handler_links($vars['view'], $vars['section']);
      break;
    case 'empty':
      $vars['title'] = t('No results behavior');
      $links = views_ui_view_preview_section_handler_links($vars['view'], $vars['section']);
      break;
    case 'exposed':
      // @todo Sorts can be exposed too, so we may need a better title.
      $vars['title'] = t('Exposed Filters');
      $links = views_ui_view_preview_section_display_category_links($vars['view'], 'exposed_form_options', $vars['title']);
      break;
    case 'rows':
      // @todo The title needs to depend on what is being viewed.
      $vars['title'] = t('Content');
      $links = views_ui_view_preview_section_rows_links($vars['view']);
      break;p, $account, $language = NULL) {
  // By default, we always notify except for canceled and blocked.
  $default_notify = ($op != 'status_canceled' && $op != 'status_blocked');
  $notify = variable_get('user_mail_' . $op . '_notify', $default_notify);
  if ($notify) {
    $params['account'] = $account;
    $language = $language ? $language : user_preferred_language($account);
    $mail = drupal_mail('user', $op, $account->mail, $language, $params);
    if ($op == 'register_pending_approval') {
      // If a user registered requiring admin approval, notify the admin, too.
      // We use the site default language for this.
      drupal_mail('user', 'register_pending_approval_admin', variable_get('site_mail', ini_get('sendmail_from')), language_default(), $params);
    }
  }
  return empty($mail) ? NULL : $mail['result'];
}

/**
 * Form element process handler for client-side password validation.
 *
 * This #process handler is automatically invoked for 'password_confirm' form
 * elements to add the JavaScript and string translations for dynamic password
 * validation.
 *
 * @see system_element_info()
 */
function user_form_process_password_confirm($element) {
  global $user;

  $js_settings = array(
    'password' => array(
      'strengthTitle' => t('Password strength:'),
      'hasWeaknesses' => t('To make your password stronger:'),
      'tooShort' => t('Make it at least 6 characters'),
      'addLowerCase' => t('Add lowercase letters'),
      'addUpperCase' => t('Add uppercase letters'),
      'addNumbers' => t('Add numbers'),
      'addPunctuation' => t('Add punctuation'),
      'sameAsUsername' => t('Make it different from your username'),
      'confirmSuccess' => t('yes'),
      'confirmFailure' => t('no'),
      'weak' => t('Weak'),
      'fair' => t('Fair'),
      'good' => t('Good'),
      'strong' => t('Strong'),
      'confirmTitle' => t('Passwords match:'),
      'username' => (isset($user->name) ? $user->name : ''),
    ),
  );

  $element['#attached']['js'][] = drupal_get_path('module', 'user') . '/user.js';
  // Ensure settings are only added once per page.
  static $already_added = FALSE;
  if (!$already_added) {
    $already_added = TRUE;
    $element['#attached']['js'][] = array('data' => $js_settings, 'type' => 'setting');
  }

  return $element;
}

/**
 * Implements hook_node_load().
 */
function user_node_load($nodes, $types) {
  // Build an array of all uids for node authors, keyed by nid.
  $uids = array();
  foreach ($nodes as $nid => $node) {
    $uids[$nid] = $node->uid;
  }

  // Fetch name, picture, and data for these users.
  $user_fields = db_query("SELECT uid, name, picture, data FROM {users} WHERE uid IN (:uids)", array(':uids' => $uids))->fetchAllAssoc('uid');

  // Add these values back into the node objects.
  foreach ($uids as $nid => $uid) {
    $nodes[$nid]->name = $user_fields[$uid]->name;
    $nodes[$nid]->picture = $user_fields[$uid]->picture;
    $nodes[$nid]->data = $user_fields[$uid]->data;
  }
}

/**
 * Implements hook_image_style_delete().
 */
function user_image_style_delete($style) {
  // If a style is deleted, update the variables.
  // Administrators choose a replacement style when deleting.
  user_image_style_save($style);
}

/**
 * Implements hook_image_style_save().
 */
function user_image_style_save($style) {
  // If a style is renamed, update the variables that use it.
  if (isset($style['old_name']) && $style['old_name'] == variable_get('user_picture_style', '')) {
    variable_set('user_picture_style', $style['name']);
  }
}

/**
 * Implements hook_action_info().
 */
function user_action_info() {
  return array(
    'user_block_user_action' => array(
      'label' => t('Block current user'),
      'type' => 'user',
      'configurable' => FALSE,
      'triggers' => array('any'),
    ),
  );
}

/**
 * Blocks the current user.
 *
 * @ingroup actions
 */
function user_block_user_action(&$entity, $context = array()) {
  // First priority: If there is a $entity->uid, block that user.
  // This is most likely a user object or the author if a node or comment.
  if (isset($entity->uid)) {
    $uid = $entity->uid;
  }
  elseif (isset($context['uid'])) {
    $uid = $context['uid'];
  }
  // If neither of those are valid, then block the current user.
  else {
    $uid = $GLOBALS['user']->uid;
  }
  $account = user_load($uid);
  $account = user_save($account, array('status' => 0));
  watchdog('action', 'Blocked user %name.', array('%name' => $account->name));
}

/**
 * Implements hook_form_FORM_ID_alter().
 *
 * Add a checkbox for the 'user_register_form' instance settings on the 'Edit
 * field instance' form.
 */
function user_form_field_ui_field_edit_form_alter(&$form, &$form_state, $form_id) {
  $instance = $form['#instance'];

  if ($instance['entity_type'] == 'user') {
    $form['instance']['settings']['user_register_form'] = array(
      '#type' => 'checkbox',
      '#title' => t('Display on user registration form.'),
      '#description' => t("This is compulsory for 'required' fields."),
      // Field instances created in D7 beta releases before the setting was
      // introduced might be set as 'required' and 'not shown on user_register
      // form'. We make sure the checkbox comes as 'checked' for those.
      '#default_value' => $instance['settings']['user_register_form'] || $instance['required'],
      // Display just below the 'required' checkbox.
      '#weight' => $form['instance']['required']['#weight'] + .1,
      // Disabled when the 'required' checkbox is checked.
      '#states' => array(
        'enabled' => array('input[name="instance[required]"]' => array('checked' => FALSE)),
      ),
      // Checked when the 'required' checkbox is checked. This is done through
      // a custom behavior, since the #states system would also synchronize on
      // uncheck.
      '#attached' => array(
        'js' => array(drupal_get_path('module', 'user') . '/user.js'),
      ),
    );

    array_unshift($form['#submit'], 'user_form_field_ui_field_edit_form_submit');
  }
}

/**
 * Additional submit handler for the 'Edit field instance' form.
 *
 * Make sure the 'user_register_form' setting is set for required fields.
 */
function user_form_field_ui_field_edit_form_submit($form, &$form_state) {
  $instance = $form_state['values']['instance'];

  if (!empty($instance['required'])) {
    form_set_value($form['instance']['settings']['user_register_form'], 1, $form_state);
  }
}

/**
 * Form builder; the user registration form.
 *
 * @ingroup forms
 * @see user_account_form()
 * @see user_account_form_validate()
 * @see user_register_submit()
 */
function user_register_form($form, &$form_state) {
  global $user;

  $admin = user_access('administer users');

  // If we aren't admin but already logged on, go to the user page instead.
  if (!$admin && $user->uid) {
    drupal_goto('user/' . $user->uid);
  }

  $form['#user'] = drupal_anonymous_user();
  $form['#user_category'] = 'register';

  $form['#attached']['library'][] = array('system', 'jquery.cookie');
  $form['#attributes']['class'][] = 'user-info-from-cookie';

  // Start with the default user account fields.
  user_account_form($form, $form_state);

  // Attach field widgets, and hide the ones where the 'user_register_form'
  // setting is not on.
  field_attach_form('user', $form['#user'], $form, $form_state);
  foreach (field_info_instances('user', 'user') as $field_name => $instance) {
    if (empty($instance['settings']['user_register_form'])) {
      $form[$field_name]['#access'] = FALSE;
    }
  }

  if ($admin) {
    // Redirect back to page which initiated the create request;
    // usually admin/people/create.
    $form_state['redirect'] = $_GET['q'];
  }

  $form['actions'] = array('#type' => 'actions');
  $form['actions']['submit'] = array(
    '#type' => 'submit',
    '#value' => t('Create new account'),
  );

  $form['#validate'][] = 'user_register_validate';
  // Add the final user registration form submit handler.
  $form['#submit'][] = 'user_register_submit';

  return $form;
}

/**
 * Validation function for the user registration form.
 */
function user_register_validate($form, &$form_state) {
  entity_form_field_validate('user', $form, $form_state);
}

/**
 * Submit handler for the user registration form.
 *
 * This function is shared by the installation form and the normal registration form,
 * which is why it can't be in the user.pages.inc file.
 *
 * @see user_register_form()
 */
function user_register_submit($form, &$form_state) {
  $admin = user_access('administer users');

  if (!variable_get('user_email_verification', TRUE) || $admin) {
    $pass = $form_state['values']['pass'];
  }
  else {
    $pass = user_password();
  }
  $notify = !empty($form_state['values']['notify']);

  // Remove unneeded values.
  form_state_values_clean($form_state);

  $form_state['values']['pass'] = $pass;
  $form_state['values']['init'] = $form_state['values']['mail'];

  $account = $form['#user'];

  entity_form_submit_build_entity('user', $account, $form, $form_state);

  // Populate $edit with the properties of $account, which have been edited on
  // this form by taking over all values, which appear in the form values too.
  $edit = array_intersect_key((array) $account, $form_state['values']);
  $account = user_save($account, $edit);

  // Terminate if an error occurred during user_save().
  if (!$account) {
    drupal_set_message(t("Error saving user account."), 'error');
    $form_state['redirect'] = '';
    return;
  }
  $form_state['user'] = $account;
  $form_state['values']['uid'] = $account->uid;

  watchdog('user', 'New user: %name (%email).', array('%name' => $form_state['values']['name'], '%email' => $form_state['values']['mail']), WATCHDOG_NOTICE, l(t('edit'), 'user/' . $account->uid . '/edit'));

  // Add plain text password into user account to generate mail tokens.
  $account->password = $pass;

  // New administrative account without notification.
  $uri = entity_uri('user', $account);
  if ($admin && !$notify) {
    drupal_set_message(t('Created a new user account for <a href="@url">%name</a>. No e-mail has been sent.', array('@url' => url($uri['path'], $uri['options']), '%name' => $account->name)));
  }
  // No e-mail verification required; log in user immediately.
  elseif (!$admin && !variable_get('user_email_verification', TRUE) && $account->status) {
    _user_mail_notify('register_no_approval_required', $account);
    $form_state['uid'] = $account->uid;
    user_login_submit(array(), $form_state);
    drupal_set_message(t('Registration successful. You are now logged in.'));
    $form_state['redirect'] = '';
  }
  // No administrator approval required.
  elseif ($account->status || $notify) {
    $op = $notify ? 'register_admin_created' : 'register_no_approval_required';
    _user_mail_notify($op, $account);
    if ($notify) {
      drupal_set_message(t('A welcome message with further instructions has been e-mailed to the new user <a href="@url">%name</a>.', array('@url' => url($uri['path'], $uri['options']), '%name' => $account->name)));
    }
    else {
      drupal_set_message(t('A welcome message with further instructions has been sent to your e-mail address.'));
      $form_state['redirect'] = '';
    }
  }
  // Administrator approval required.
  else {
    _user_mail_notify('register_pending_approval', $account);
    drupal_set_message(t('Thank you for applying for an account. Your account is currently pending approval by the site administrator.<br />In the meantime, a welcome message with further instructions has been sent to your e-mail address.'));
    $form_state['redirect'] = '';
  }
}

/**
 * Implements hook_modules_installed().
 */
function user_modules_installed($modules) {
  // Assign all available permissions to the administrator role.
  $rid = variable_get('user_admin_role', 0);
  if ($rid) {
    $permissions = array();
    foreach ($modules as $module) {
      if ($module_permissions = module_invoke($module, 'permission')) {
        $permissions = array_merge($permissions, array_keys($module_permissions));
      }
    }
    if (!empty($permissions)) {
      user_role_grant_permissions($rid, $permissions);
    }
  }
}

/**
 * Implements hook_modules_uninstalled().
 */
function user_modules_uninstalled($modules) {
   db_delete('role_permission')
     ->condition('module', $modules, 'IN')
     ->execute();
}

/**
 * Helper function to rewrite the destination to avoid redirecting to login page after login.
 *
 * Third-party authentication modules may use this function to determine the
 * proper destination after a user has been properly logged in.
 */
function user_login_destination() {
  $destination = drupal_get_destination();
  if ($destination['destination'] == 'user/login') {
    $destination['destination'] = 'user';
  }
  return $destination;
}

/**
 * Saves visitor information as a cookie so it can be reused.
 *
 * @param $values
 *   An array of key/value pairs to be saved into a cookie.
 */
function user_cookie_save(array $values) {
  foreach ($values as $field => $value) {
    // Set cookie for 365 days.
    setrawcookie('Drupal.visitor.' . $field, rawurlencode($value), REQUEST_TIME + 31536000, '/');
  }
}

/**
 * Delete a visitor information cookie.
 *
 * @param $cookie_name
 *   A cookie name such as 'homepage'.
 */
function user_cookie_delete($cookie_name) {
  setrawcookie('Drupal.visitor.' . $cookie_name, '', REQUEST_TIME - 3600, '/');
}

/**
 * Implements hook_rdf_mapping().
 */
function user_rdf_mapping() {
  return array(
    array(
      'type' => 'user',
      'bundle' => RDF_DEFAULT_BUNDLE,
      'mapping' => array(
        'rdftype' => array('sioc:UserAccount'),
        'name' => array(
          'predicates' => array('foaf:name'),
        ),
        'homepage' => array(
          'predicates' => array('foaf:page'),
          'type' => 'rel',
        ),
      ),
    ),
  );
}

/**
 * Implements hook_file_download_access().
 */
function user_file_download_access($field, $entity_type, $entity) {
  if ($entity_type == 'user') {
    return user_view_access($entity);
  }
}

/**
 * Implements hook_system_info_alter().
 *
 * Drupal 7 ships with two methods to add additional fields to users: Profile
 * module, a legacy module dating back from 2002, and Field API integration
 * with users. While Field API support for users currently provides less end
 * user features, the inefficient data storage mechanism of Profile module, as
 * well as its lack of consistency with the rest of the entity / field based
 * systems in Drupal 7, make this a sub-optimal solution to those who were not
 * using it in previous releases of Drupal.
 *
 * To prevent new Drupal 7 sites from installing Profile module, and
 * unwittingly ending up with two completely different and incompatible methods
 * of extending users, only make the Profile module available if the profile_*
 * tables are present.
 *
 * @todo: Remove in D8, pending upgrade path.
 */
function user_system_info_alter(&$info, $file, $type) {
  if orm['user_cancel_confirm'] = array(
    '#type' => 'checkbox',
    '#title' => t('Require e-mail confirmation to cancel account.'),
    '#default_value' => FALSE,
    '#description' => t('When enabled, the user must confirm the account cancellation via e-mail.'),
  );
  // Also allow to send account canceled notification mail, if enabled.
  $form['user_cancel_notify'] = array(
    '#type' => 'checkbox',
    '#title' => t('Notify user when account is canceled.'),
    '#default_value' => FALSE,
    '#access' => variable_get('user_mail_status_canceled_notify', FALSE),
    '#description' => t('When enabled, the user will receive an e-mail notification after the account has been cancelled.'),
  );

  return confirm_form($form,
                      t('Are you sure you want to cancel these user accounts?'),
                      'admin/people', t('This action cannot be undone.'),
                      t('Cancel accounts'), t('Cancel'));
}

/**
 * Submit handler for mass-account cancellation form.
 *
 * @see user_multiple_cancel_confirm()
 * @see user_cancel_confirm_form_submit()
 */
function user_multiple_cancel_confirm_submit($form, &$form_state) {
  global $user;

  if ($form_state['values']['confirm']) {
    foreach ($form_state['values']['accounts'] as $uid => $value) {
      // Prevent programmatic form submissions from cancelling user 1.
      if ($uid <= 1) {
        continue;
      }
      // Prevent user administrators from deleting themselves without confirmation.
      if ($uid == $user->uid) {
        $admin_form_state = $form_state;
        unset($admin_form_state['values']['user_cancel_confirm']);
        $admin_form_state['values']['_account'] = $user;
        user_cancel_confirm_form_submit(array(), $admin_form_state);
      }
      else {
        user_cancel($form_state['values'], $uid, $form_state['values']['user_cancel_method']);
      }
    }
  }
  $form_state['redirect'] = 'admin/people';
}

/**
 * Retrieve a list of all user setting/information categories and sort them by weight.
 */
function _user_categories() {
  $categories = module_invoke_all('user_categories');
  usort($categories, '_user_sort');

  return $categories;
}

function _user_sort($a, $b) {
  $a = (array) $a + array('weight' => 0, 'title' => '');
  $b = (array) $b + array('weight' => 0, 'title' => '');
  return $a['weight'] < $b['weight'] ? -1 : ($a['weight'] > $b['weight'] ? 1 : ($a['title'] < $b['title'] ? -1 : 1));
}

/**
 * List user administration filters that can be applied.
 */
function user_filters() {
  // Regular filters
  $filters = array();
  $roles = user_roles(TRUE);
  unset($roles[DRUPAL_AUTHENTICATED_RID]); // Don't list authorized role.
  if (count($roles)) {
    $filters['role'] = array(
      'title' => t('role'),
      'field' => 'ur.rid',
      'options' => array(
        '[any]' => t('any'),
      ) + $roles,
    );
  }

  $options = array();
  foreach (module_implements('permission') as $module) {
    $function = $module . '_permission';
    if ($permissions = $function('permission')) {
      asort($permissions);
      foreach ($permissions as $permission => $description) {
        $options[t('@module module', array('@module' => $module))][$permission] = t($permission);
      }
    }
  }
  ksort($options);
  $filters['permission'] = array(
    'title' => t('permission'),
    'options' => array(
      '[any]' => t('any'),
    ) + $options,
  );

  $filters['status'] = array(
    'title' => t('status'),
    'field' => 'u.status',
    'options' => array(
      '[any]' => t('any'),
      1 => t('active'),
      0 => t('blocked'),
    ),
  );
  return $filters;
}

/**
 * Extends a query object for user administration filters based on session.
 *
 * @param $query
 *   Query object that should be filtered.
 */
function user_build_filter_query(SelectQuery $query) {
  $filters = user_filters();
  // Extend Query with filter conditions.
  foreach (isset($_SESSION['user_overview_filter']) ? $_SESSION['user_overview_filter'] : array() as $filter) {
    list($key, $value) = $filter;
    // This checks to see if this permission fig the view.
 */
function views_ui_cache_load($name) {
  ctools_include('object-cache');
  views_include('view');
  $view = ctools_object_cache_get('view', $name);
  $original_view = views_get_view($name);

  if (empty($view)) {
    $view = $original_view;
    if (!empty($view)) {
      // Check to see if someone else is already editing this view.
      $view->locked = ctools_object_cache_test('view', $view->name);
      // Set a flag to indicate that this view is being edited.
      // This flag will be used e.g. to determine whether strings
      // should be localized.
      $view->editing = TRUE;
    }
  }
  else {
    // Keep disabled/enabled status real.
    if ($original_view) {
      $view->disabled = !empty($original_view->disabled);
    }
  }

  if (empty($view)) {
    return FALSE;
  }

  else {
    return $view;
  }
}

/**
 * Specialized cache function to add a flag to our view, include an appropriate
 * include, and cache more easily.
 */
function views_ui_cache_set(&$view) {
  if (!empty($view->locked)) {
    drupal_set_message(t('Changes cannot be made to a locked view.'), 'error');
    return;
  }
  ctools_include('object-cache');
  $view->changed = TRUE; // let any future object know that this view has changed.

  if (isset($view->current_display)) {
    // Add the knowledge of the changed display, too.
    $view->changed_display[$view->current_display] = TRUE;
    unset($view->current_display);
  }

  // Unset handlers; we don't want to write these into the cache
  unset($view->display_handler);
  unset($view->default_display);
  $view->query = NULL;
  foreach (array_keys($view->display) as $id) {
    unset($view->display[$id]->handler);
    unset($view->display[$id]->default_display);
  }
  ctools_object_cache_set('view', $view->name, $view);
}


/**
 * Specialized menu callback to load a view that is only a default
 * view.
 */
function views_ui_default_load($name) {
  $view = views_get_view($name);
  if ($view->type == t('Default')) {
    return $view;
  }

  return FALSE;
}

/**
 * Theme preprocess for views-view.tpl.php.
 */
function views_ui_preprocess_views_view(&$vars) {
  $view = $vars['view'];
  if (!empty($view->views_ui_context) && module_exists('contextual')) {
    $view->hide_admin_links = TRUE;
    foreach (array('title', 'header', 'exposed', 'rows', 'pager', 'more', 'footer', 'empty', 'attachment_after', 'attachment_before') as $section) {
      if (!empty($vars[$section])) {
        $vars[$section] = array(
          '#theme' => 'views_ui_view_preview_section',
          '#view' => $view,
          '#section' => $section,
          '#content' => $vars[$section],
          '#theme_wrappers' => array('views_container'),
          '#attributes' => array('class' => 'contextual-links-region'),
        );
        $vars[$section] = drupal_render($vars[$section]);
      }
    }
  }
}

/**
 * Theme preprocess for theme_views_ui_view_preview_section().
 *
 * @TODO
 *    Perhaps move this to includes/admin.inc or theme/theme.inc
 */
function template_preprocess_views_ui_view_preview_section(&$vars) {
  switch ($vars['section']) {
    case 'title':
      $vars['title'] = t('Title');
      $links = views_ui_view_preview_section_display_category_links($vars['view'], 'title', $vars['title']);
      break;
    case 'header':
      $vars['title'] = t('Header');
      $links = views_ui_view_preview_section_handler_links($vars['view'], $vars['section']);
      break;
    case 'empty':
      $vars['title'] = t('No results behavior');
      $links = views_ui_view_preview_section_handler_links($vars['view'], $vars['section']);
      break;
    case 'exposed':
      // @todo Sorts can be exposed too, so we may need a better title.
      $vars['title'] = t('Exposed Filters');
      $links = views_ui_view_preview_section_display_category_links($vars['view'], 'exposed_form_options', $vars['title']);
      break;
    case 'rows':
      // @todo The title needs to depend on what is being viewed.
      $vars['title'] = t('Content');
      $links = views_ui_view_preview_section_rows_links($vars['view']);
      break;p, $account, $language = NULL) {
  // By default, we always notify except for canceled and blocked.
  $default_notify = ($op != 'status_canceled' && $op != 'status_blocked');
  $notify = variable_get('user_mail_' . $op . '_notify', $default_notify);
  if ($notify) {
    $params['account'] = $account;
    $language = $language ? $language : user_preferred_language($account);
    $mail = drupal_mail('user', $op, $account->mail, $language, $params);
    if ($op == 'register_pending_approval') {
      // If a user registered requiring admin approval, notify the admin, too.
      // We use the site default language for this.
      drupal_mail('user', 'register_pending_approval_admin', variable_get('site_mail', ini_get('sendmail_from')), language_default(), $params);
    }
  }
  return empty($mail) ? NULL : $mail['result'];
}

/**
 * Form element process handler for client-side password validation.
 *
 * This #process handler is automatically invoked for 'password_confirm' form
 * elements to add the JavaScript and string translations for dynamic password
 * validation.
 *
 * @see system_element_info()
 */
function user_form_process_password_confirm($element) {
  global $user;

  $js_settings = array(
    'password' => array(
      'strengthTitle' => t('Password strength:'),
      'hasWeaknesses' => t('To make your password stronger:'),
      'tooShort' => t('Make it at least 6 characters'),
      'addLowerCase' => t('Add lowercase letters'),
      'addUpperCase' => t('Add uppercase letters'),
      'addNumbers' => t('Add numbers'),
      'addPunctuation' => t('Add punctuation'),
      'sameAsUsername' => t('Make it different from your username'),
      'confirmSuccess' => t('yes'),
      'confirmFailure' => t('no'),
      'weak' => t('Weak'),
      'fair' => t('Fair'),
      'good' => t('Good'),
      'strong' => t('Strong'),
      'confirmTitle' => t('Passwords match:'),
      'username' => (isset($user->name) ? $user->name : ''),
    ),
  );

  $element['#attached']['js'][] = drupal_get_path('module', 'user') . '/user.js';
  // Ensure settings are only added once per page.
  static $already_added = FALSE;
  if (!$already_added) {
    $already_added = TRUE;
    $element['#attached']['js'][] = array('data' => $js_settings, 'type' => 'setting');
  }

  return $element;
}

/**
 * Implements hook_node_load().
 */
function user_node_load($nodes, $types) {
  // Build an array of all uids for node authors, keyed by nid.
  $uids = array();
  foreach ($nodes as $nid => $node) {
    $uids[$nid] = $node->uid;
  }

  // Fetch name, picture, and data for these users.
  $user_fields = db_query("SELECT uid, name, picture, data FROM {users} WHERE uid IN (:uids)", array(':uids' => $uids))->fetchAllAssoc('uid');

  // Add these values back into the node objects.
  foreach ($uids as $nid => $uid) {
    $nodes[$nid]->name = $user_fields[$uid]->name;
    $nodes[$nid]->picture = $user_fields[$uid]->picture;
    $nodes[$nid]->data = $user_fields[$uid]->data;
  }
}

/**
 * Implements hook_image_style_delete().
 */
function user_image_style_delete($style) {
  // If a style is deleted, update the variables.
  // Administrators choose a replacement style when deleting.
  user_image_style_save($style);
}

/**
 * Implements hook_image_style_save().
 */
function user_image_style_save($style) {
  // If a style is renamed, update the variables that use it.
  if (isset($style['old_name']) && $style['old_name'] == variable_get('user_picture_style', '')) {
    variable_set('user_picture_style', $style['name']);
  }
}

/**
 * Implements hook_action_info().
 */
function user_action_info() {
  return array(
    'user_block_user_action' => array(
      'label' => t('Block current user'),
      'type' => 'user',
      'configurable' => FALSE,
      'triggers' => array('any'),
    ),
  );
}

/**
 * Blocks the current user.
 *
 * @ingroup actions
 */
function user_block_user_action(&$entity, $context = array()) {
  // First priority: If there is a $entity->uid, block that user.
  // This is most likely a user object or the author if a node or comment.
  if (isset($entity->uid)) {
    $uid = $entity->uid;
  }
  elseif (isset($context['uid'])) {
    $uid = $context['uid'];
  }
  // If neither of those are valid, then block the current user.
  else {
    $uid = $GLOBALS['user']->uid;
  }
  $account = user_load($uid);
  $account = user_save($account, array('status' => 0));
  watchdog('action', 'Blocked user %name.', array('%name' => $account->name));
}

/**
 * Implements hook_form_FORM_ID_alter().
 *
 * Add a checkbox for the 'user_register_form' instance settings on the 'Edit
 * field instance' form.
 */
function user_form_field_ui_field_edit_form_alter(&$form, &$form_state, $form_id) {
  $instance = $form['#instance'];

  if ($instance['entity_type'] == 'user') {
    $form['instance']['settings']['user_register_form'] = array(
      '#type' => 'checkbox',
      '#title' => t('Display on user registration form.'),
      '#description' => t("This is compulsory for 'required' fields."),
      // Field instances created in D7 beta releases before the setting was
      // introduced might be set as 'required' and 'not shown on user_register
      // form'. We make sure the checkbox comes as 'checked' for those.
      '#default_value' => $instance['settings']['user_register_form'] || $instance['required'],
      // Display just below the 'required' checkbox.
      '#weight' => $form['instance']['required']['#weight'] + .1,
      // Disabled when the 'required' checkbox is checked.
      '#states' => array(
        'enabled' => array('input[name="instance[required]"]' => array('checked' => FALSE)),
      ),
      // Checked when the 'required' checkbox is checked. This is done through
      // a custom behavior, since the #states system would also synchronize on
      // uncheck.
      '#attached' => array(
        'js' => array(drupal_get_path('module', 'user') . '/user.js'),
      ),
    );

    array_unshift($form['#submit'], 'user_form_field_ui_field_edit_form_submit');
  }
}

/**
 * Additional submit handler for the 'Edit field instance' form.
 *
 * Make sure the 'user_register_form' setting is set for required fields.
 */
function user_form_field_ui_field_edit_form_submit($form, &$form_state) {
  $instance = $form_state['values']['instance'];

  if (!empty($instance['required'])) {
    form_set_value($form['instance']['settings']['user_register_form'], 1, $form_state);
  }
}

/**
 * Form builder; the user registration form.
 *
 * @ingroup forms
 * @see user_account_form()
 * @see user_account_form_validate()
 * @see user_register_submit()
 */
function user_register_form($form, &$form_state) {
  global $user;

  $admin = user_access('administer users');

  // If we aren't admin but already logged on, go to the user page instead.
  if (!$admin && $user->uid) {
    drupal_goto('user/' . $user->uid);
  }

  $form['#user'] = drupal_anonymous_user();
  $form['#user_category'] = 'register';

  $form['#attached']['library'][] = array('system', 'jquery.cookie');
  $form['#attributes']['class'][] = 'user-info-from-cookie';

  // Start with the default user account fields.
  user_account_form($form, $form_state);

  // Attach field widgets, and hide the ones where the 'user_register_form'
  // setting is not on.
  field_attach_form('user', $form['#user'], $form, $form_state);
  foreach (field_info_instances('user', 'user') as $field_name => $instance) {
    if (empty($instance['settings']['user_register_form'])) {
      $form[$field_name]['#access'] = FALSE;
    }
  }

  if ($admin) {
    // Redirect back to page which initiated the create request;
    // usually admin/people/create.
    $form_state['redirect'] = $_GET['q'];
  }

  $form['actions'] = array('#type' => 'actions');
  $form['actions']['submit'] = array(
    '#type' => 'submit',
    '#value' => t('Create new account'),
  );

  $form['#validate'][] = 'user_register_validate';
  // Add the final user registration form submit handler.
  $form['#submit'][] = 'user_register_submit';

  return $form;
}

/**
 * Validation function for the user registration form.
 */
function user_register_validate($form, &$form_state) {
  entity_form_field_validate('user', $form, $form_state);
}

/**
 * Submit handler for the user registration form.
 *
 * This function is shared by the installation form and the normal registration form,
 * which is why it can't be in the user.pages.inc file.
 *
 * @see user_register_form()
 */
function user_register_submit($form, &$form_state) {
  $admin = user_access('administer users');

  if (!variable_get('user_email_verification', TRUE) || $admin) {
    $pass = $form_state['values']['pass'];
  }
  else {
    $pass = user_password();
  }
  $notify = !empty($form_state['values']['notify']);

  // Remove unneeded values.
  form_state_values_clean($form_state);

  $form_state['values']['pass'] = $pass;
  $form_state['values']['init'] = $form_state['values']['mail'];

  $account = $form['#user'];

  entity_form_submit_build_entity('user', $account, $form, $form_state);

  // Populate $edit with the properties of $account, which have been edited on
  // this form by taking over all values, which appear in the form values too.
  $edit = array_intersect_key((array) $account, $form_state['values']);
  $account = user_save($account, $edit);

  // Terminate if an error occurred during user_save().
  if (!$account) {
    drupal_set_message(t("Error saving user account."), 'error');
    $form_state['redirect'] = '';
    return;
  }
  $form_state['user'] = $account;
  $form_state['values']['uid'] = $account->uid;

  watchdog('user', 'New user: %name (%email).', array('%name' => $form_state['values']['name'], '%email' => $form_state['values']['mail']), WATCHDOG_NOTICE, l(t('edit'), 'user/' . $account->uid . '/edit'));

  // Add plain text password into user account to generate mail tokens.
  $account->password = $pass;

  // New administrative account without notification.
  $uri = entity_uri('user', $account);
  if ($admin && !$notify) {
    drupal_set_message(t('Created a new user account for <a href="@url">%name</a>. No e-mail has been sent.', array('@url' => url($uri['path'], $uri['options']), '%name' => $account->name)));
  }
  // No e-mail verification required; log in user immediately.
  elseif (!$admin && !variable_get('user_email_verification', TRUE) && $account->status) {
    _user_mail_notify('register_no_approval_required', $account);
    $form_state['uid'] = $account->uid;
    user_login_submit(array(), $form_state);
    drupal_set_message(t('Registration successful. You are now logged in.'));
    $form_state['redirect'] = '';
  }
  // No administrator approval required.
  elseif ($account->status || $notify) {
    $op = $notify ? 'register_admin_created' : 'register_no_approval_required';
    _user_mail_notify($op, $account);
    if ($notify) {
      drupal_set_message(t('A welcome message with further instructions has been e-mailed to the new user <a href="@url">%name</a>.', array('@url' => url($uri['path'], $uri['options']), '%name' => $account->name)));
    }
    else {
      drupal_set_message(t('A welcome message with further instructions has been sent to your e-mail address.'));
      $form_state['redirect'] = '';
    }
  }
  // Administrator approval required.
  else {
    _user_mail_notify('register_pending_approval', $account);
    drupal_set_message(t('Thank you for applying for an account. Your account is currently pending approval by the site administrator.<br />In the meantime, a welcome message with further instructions has been sent to your e-mail address.'));
    $form_state['redirect'] = '';
  }
}

/**
 * Implements hook_modules_installed().
 */
function user_modules_installed($modules) {
  // Assign all available permissions to the administrator role.
  $rid = variable_get('user_admin_role', 0);
  if ($rid) {
    $permissions = array();
    foreach ($modules as $module) {
      if ($module_permissions = module_invoke($module, 'permission')) {
        $permissions = array_merge($permissions, array_keys($module_permissions));
      }
    }
    if (!empty($permissions)) {
      user_role_grant_permissions($rid, $permissions);
    }
  }
}

/**
 * Implements hook_modules_uninstalled().
 */
function user_modules_uninstalled($modules) {
   db_delete('role_permission')
     ->condition('module', $modules, 'IN')
     ->execute();
}

/**
 * Helper function to rewrite the destination to avoid redirecting to login page after login.
 *
 * Third-party authentication modules may use this function to determine the
 * proper destination after a user has been properly logged in.
 */
function user_login_destination() {
  $destination = drupal_get_destination();
  if ($destination['destination'] == 'user/login') {
    $destination['destination'] = 'user';
  }
  return $destination;
}

/**
 * Saves visitor information as a cookie so it can be reused.
 *
 * @param $values
 *   An array of key/value pairs to be saved into a cookie.
 */
function user_cookie_save(array $values) {
  foreach ($values as $field => $value) {
    // Set cookie for 365 days.
    setrawcookie('Drupal.visitor.' . $field, rawurlencode($value), REQUEST_TIME + 31536000, '/');
  }
}

/**
 * Delete a visitor information cookie.
 *
 * @param $cookie_name
 *   A cookie name such as 'homepage'.
 */
function user_cookie_delete($cookie_name) {
  setrawcookie('Drupal.visitor.' . $cookie_name, '', REQUEST_TIME - 3600, '/');
}

/**
 * Implements hook_rdf_mapping().
 */
function user_rdf_mapping() {
  return array(
    array(
      'type' => 'user',
      'bundle' => RDF_DEFAULT_BUNDLE,
      'mapping' => array(
        'rdftype' => array('sioc:UserAccount'),
        'name' => array(
          'predicates' => array('foaf:name'),
        ),
        'homepage' => array(
          'predicates' => array('foaf:page'),
          'type' => 'rel',
        ),
      ),
    ),
  );
}

/**
 * Implements hook_file_download_access().
 */
function user_file_download_access($field, $entity_type, $entity) {
  if ($entity_type == 'user') {
    return user_view_access($entity);
  }
}

/**
 * Implements hook_system_info_alter().
 *
 * Drupal 7 ships with two methods to add additional fields to users: Profile
 * module, a legacy module dating back from 2002, and Field API integration
 * with users. While Field API support for users currently provides less end
 * user features, the inefficient data storage mechanism of Profile module, as
 * well as its lack of consistency with the rest of the entity / field based
 * systems in Drupal 7, make this a sub-optimal solution to those who were not
 * using it in previous releases of Drupal.
 *
 * To prevent new Drupal 7 sites from installing Profile module, and
 * unwittingly ending up with two completely different and incompatible methods
 * of extending users, only make the Profile module available if the profile_*
 * tables are present.
 *
 * @todo: Remove in D8, pending upgrade path.
 */
function user_system_info_alter(&$info, $file, $type) {
  if ($type == 'module' && $file->name == 'profile' && db_table_exists('profile_field')) {
    $info['hidden'] = FALSE;
  }
}
type' => MENU_DEFAULT_LOCAL_TASK,
    'load arguments' => array('%map', '%index'),
  );

  if (($categories = _user_categories()) && (count($categories) > 1)) {
    foreach ($categories as $key => $category) {
      // 'account' is already handled by the MENU_DEFAULT_LOCAL_TASK.
      if ($category['name'] != 'account') {
        $items['user/%user_category/edit/' . $category['name']] = array(
          'title callback' => 'check_plain',
          'title arguments' => array($category['title']),
          'page callback' => 'drupal_get_form',
          'page arguments' => array('user_profile_form', 1, 3),
          'access callback' => isset($category['access callback']) ? $category['access callback'] : 'user_edit_access',
          'access arguments' => isset($category['access arguments']) ? $category['access arguments'] : array(1),
          'type' => MENU_LOCAL_TASK,
          'weight' => $category['weight'],
          'load arguments' => array('%map', '%index'),
          'tab_parent' => 'user/%/edit',
          'file' => 'user.pages.inc',
        );
      }
    }
  }
  return $items;
}

/**
 * Implements hook_menu_site_status_alter().
 */
function user_menu_site_status_alter(&$menu_site_status, $path) {
  if ($menu_site_status == MENU_SITE_OFFLINE) {
    // If the site is offline, log out unprivileged users.
    if (user_is_logged_in() && !user_access('access site in maintenance mode')) {
      module_load_include('pages.inc', 'user', 'user');
      user_logout();
    }

    if (user_is_anonymous()) {
      switch ($path) {
        case 'user':
          // Forward anonymous user to login page.
          drupal_goto('user/login');
        case 'user/login':
        case 'user/password':
          // Disable offline mode.
          $menu_site_status = MENU_SITE_ONLINE;
          break;
        default:
          if (strpos($path, 'user/reset/') === 0) {
            // Disable offline mode.
            $menu_site_status = MENU_SITE_ONLINE;
          }
          break;
      }
    }
  }
  if (user_is_logged_in()) {
    if ($path == 'user/login') {
      // If user is logged in, redirect to 'user' instead of giving 403.
      drupal_goto('user');
    }
    if ($path == 'user/register') {
      // Authenticated user should be redirected to user edit page.
      drupal_goto('user/' . $GLOBALS['user']->uid . '/edit');
    }
  }
}

/**
 * Implements hook_menu_link_alter().
 */
function user_menu_link_alter(&$link) {
  // The path 'user' must be accessible for anonymous users, but only visible
  // for authenticated users. Authenticated users should see "My account", but
  // anonymous users should not see it at all. Therefore, invoke
  // user_translated_menu_link_alter() to conditionally hide the link.
  if ($link['link_path'] == 'user' && $link['module'] == 'system') {
    $link['options']['alter'] = TRUE;
  }

  // Force the Logout link to appear on the top-level of 'user-menu' menu by
  // default (i.e., unless it has been customized).
  if ($link['link_path'] == 'user/logout' && $link['module'] == 'system' && empty($link['customized'])) {
    $link['plid'] = 0;
  }
}

/**
 * Implements hook_translated_menu_link_alter().
 */
function user_translated_menu_link_alter(&$link) {
  // Hide the "User account" link for anonymous users.
  if ($link['link_path'] == 'user' && $link['module'] == 'system' && user_is_anonymous()) {
    $link['hidden'] = 1;
  }
}

/**
 * Implements hook_admin_paths().
 */
function user_admin_paths() {
  $paths = array(
    'user/*/cancel' => TRUE,
    'user/*/edit' => TRUE,
    'user/*/edit/*' => TRUE,
  );
  return $paths;
}

/**
 * Returns $arg or the user ID of the current user if $arg is '%' or empty.
 *
 * Deprecated. Use %user_uid_optional instead.
 *
 * @todo D8: Remove.
 */
function user_uid_only_optional_to_arg($arg) {
  return user_uid_optional_to_arg($arg);
}

/**
 * Load either a specified or the current user account.
 *
 * @param $uid
 *   An optional user ID of the user to load. If not provided, the current
 *   user's ID will be used.
 * @return
 *   A fully-loaded $user object upon sucorm',
    'pattern' => 'views_exposed_form__',
    'render element' => 'form',
  );

  $hooks['views_more'] = $base + array(
    'template' => 'views-more',
    'pattern' => 'views_more__',
    'variables' => array('more_url' => NULL, 'link_text' => 'more'),
  );

  // Add theme suggestions which are part of modules.
  foreach (views_get_module_apis() as $info) {
    if (isset($info['template path'])) {
      $hooks += _views_find_module_templates($hooks, $info['template path']);
    }
  }
  return $hooks;
}

/**
 * Scans a directory of a module for template files.
 *
 * @param $cache
 *   The existing cache of theme hooks to test against.
 * @param $path
 *   The path to search.
 *
 * @see drupal_find_theme_templates
 */
function _views_find_module_templates($cache, $path) {
  $regex = '/' . '\.tpl\.php' . '$' . '/';

  // Because drupal_system_listing works the way it does, we check for real
  // templates separately from checking for patterns.
  $files = drupal_system_listing($regex, $path, 'name', 0);
  foreach ($files as $template => $file) {
    // Chop off the remaining extensions if there are any. $template already
    // has the rightmost extension removed, but there might still be more,
    // such as with .tpl.php, which still has .tpl in $template at this point.
    if (($pos = strpos($template, '.')) !== FALSE) {
      $template = substr($template, 0, $pos);
    }
    // Transform - in filenames to _ to match function naming scheme
    // for the purposes of searching.
    $hook = strtr($template, '-', '_');
    if (isset($cache[$hook])) {
      $templates[$hook] = array(
        'template' => $template,
        'path' => dirname($file->filename),
        'includes' => isset($cache[$hook]['includes']) ? $cache[$hook]['includes'] : NULL,
      );
    }
    // Ensure that the pattern is maintained from base themes to its sub-themes.
    // Each sub-theme will have their templates scanned so the pattern must be
    // held for subsequent runs.
    if (isset($cache[$hook]['pattern'])) {
      $templates[$hook]['pattern'] = $cache[$hook]['pattern'];
    }
  }

  $patterns = array_keys($files);

  foreach ($cache as $hook => $info) {
    if (!empty($info['pattern'])) {
      // Transform _ in pattern to - to match file naming scheme
      // for the purposes of searching.
      $pattern = strtr($info['pattern'], '_', '-');

      $matches = preg_grep('/^'. $pattern .'/', $patterns);
      if ($matches) {
        foreach ($matches as $match) {
          $file = substr($match, 0, strpos($match, '.'));
          // Put the underscores back in for the hook name and register this pattern.
          $templates[strtr($file, '-', '_')] = array(
            'template' => $file,
            'path' => dirname($files[$match]->uri),
            'variables' => $info['variables'],
            'base hook' => $hook,
            'includes' => isset($info['includes']) ? $info['includes'] : NULL,
          );
        }
      }
    }
  }

  return $templates;
}

/**
 * A theme preprocess function to automatically allow view-based node
 * templates if called from a view.
 *
 * The 'modules/node.views.inc' file is a better place for this, but
 * we haven't got a chance to load that file before Drupal builds the
 * node portion of the theme registry.
 */
function views_preprocess_node(&$vars) {
  // The 'view' attribute of the node is added in views_preprocess_node()
  if (!empty($vars['node']->view) && !empty($vars['node']->view->name)) {
    $vars['view'] = $vars['node']->view;
    $vars['theme_hook_suggestions'][] = 'node__view__' . $vars['node']->view->name;
    if (!empty($vars['node']->view->current_display)) {
      $vars['theme_hook_suggestions'][] = 'node__view__' . $vars['node']->view->name . '__' . $vars['node']->view->current_display;

      // If a node is being rendered in a view, and the view does not have a path,
      // prevent drupal from accidentally setting the $page variable:
      if ($vars['page'] && $vars['view_mode'] == 'full' && !$vars['view']->display_handler->has_path()) {
        $vars['page'] = FALSE;
     to the user page instead.
  if ($user->uid) {
    drupal_goto('user/' . $user->uid);
  }

  // Display login form:
  $form['name'] = array('#type' => 'textfield',
    '#title' => t('Username'),
    '#size' => 60,
    '#maxlength' => USERNAME_MAX_LENGTH,
    '#required' => TRUE,
  );

  $form['name']['#description'] = t('Enter your @s username.', array('@s' => variable_get('site_name', 'Drupal')));
  $form['pass'] = array('#type' => 'password',
    '#title' => t('Password'),
    '#description' => t('Enter the password that accompanies your username.'),
    '#required' => TRUE,
  );
  $form['#validate'] = user_login_default_validators();
  $form['actions'] = array('#type' => 'actions');
  $form['actions']['submit'] = array('#type' => 'submit', '#value' => t('Log in'));

  return $form;
}

/**
 * Set up a series for validators which check for blocked users,
 * then authenticate against local database, then return an error if
 * authentication fails. Distributed authentication modules are welcome
 * to use hook_form_alter() to change this series in order to
 * authenticate against their user database instead of the local users
 * table. If a distributed authentication module is successful, it
 * should set $form_state['uid'] to a user ID.
 *
 * We use three validators instead of one since external authentication
 * modules usually only need to alter the second validator.
 *
 * @see user_login_name_validate()
 * @see user_login_authenticate_validate()
 * @see user_login_final_validate()
 * @return array
 *   A simple list of validate functions.
 */
function user_login_default_validators() {
  return array('user_login_name_validate', 'user_login_authenticate_validate', 'user_login_final_validate');
}

/**
 * A FAPI validate handler. Sets an error if supplied username has been blocked.
 */
function user_login_name_validate($form, &$form_state) {
  if (isset($form_state['values']['name']) && user_is_blocked($form_state['values']['name'])) {
    // Blocked in user administration.
    form_set_error('name', t('The username %name has not been activated or is blocked.', array('%name' => $form_state['values']['name'])));
  }
}

/**
 * A validate handler on the login form. Check supplied username/password
 * against local users table. If successful, $form_state['uid']
 * is set to the matching user ID.
 */
function user_login_authenticate_validate($form, &$form_state) {
  $password = trim($form_state['values']['pass']);
  if (!empty($form_state['values']['name']) && !empty($password)) {
    // Do not allow any login from the current user's IP if the limit has been
    // reached. Default is 50 failed attempts allowed in one hour. This is
    // independent of the per-user limit to catch attempts from one IP to log
    // in to many different user accounts.  We have a reasonably high limit
    // since there may be only one apparent IP for all users at an institution.
    if (!flood_is_allowed('failed_login_attempt_ip', variable_get('user_failed_login_ip_limit', 50), variable_get('user_failed_login_ip_window', 3600))) {
      $form_state['flood_control_triggered'] = 'ip';
      return;
    }
    $account = db_query("SELECT * FROM {users} WHERE name = :name AND status = 1", array(':name' => $form_state['values']['name']))->fetchObject();
    if ($account) {
      if (variable_get('user_failed_login_identifier_uid_only', FALSE)) {
        // Register flood events based on the uid only, so they apply for any
        // IP address. This is the most secure option.
        $identifier = $account->uid;
      }
      else {
        // The default identifier is a combination of uid and IP address. This
        // is less secure but more resistant to denial-of-service attacks that
        // could lock out all users with public user names.
        $identifier = $account->uid . '-' . ip_address();
      }
      $form_state['flood_control_user_identifier'] = $identifier;

      // Don't allow login if the limit for this user has been reached.
      // Default is to allow 5 failed attempts every 6 hours.
      if (!flood_is_allowed('failed_login_attempt_user', variable_get('user_failed_login_user_limit', 5), variable_get('user_failed_login_user_window', 21600), $identifier)) {
        $form_state['flood_control_triggered'] = 'user';
        return;
      }
    }
    // We are not limited by flood control, so try to authenticate.
    // Set $form_state['uid'] as a flag for user_login_final_validate().
    $form_state['uid'] = user_authenticate($form_state['values']['name'], $password);
  }
}

/**
 * The final validation handler on the login form.
 *
 * Sets a form error if user has not been authenticated, or if too many
 * logins have been attempted. This validation function should always
 * be the last one.
 */
function user_login_final_validate($form, &$form_state) {
  if (empty($form_state['uid'])) {
    // Always register an IP-based failed login event.
    flood_register_event('failed_login_attempt_ip', variable_get('user_failed_login_ip_window', 3600));
    // Register a per-user failed login event.
    if (isset($form_state['flood_control_user_identifier'])) {
      flood_register_event('failed_login_attempt_user', variable_get('user_failed_login_user_window', 21600), $form_state['flood_control_user_identifier']);
    }

    if (isset($form_state['flood_control_triggered'])) {
      if ($form_state['flood_control_triggered'] == 'user') {
        form_set_error('name', format_plural(variable_get('user_failed_login_user_limit', 5), 'Sorry, there has been more than one failed login attempt for this account. It is temporarily blocked. Try again later or <a href="@url">request a new password</a>.', 'Sorry, there have been more than @count failed login attempts for this account. It is temporarily blocked. Try again later or <a href="@url">request a new password</a>.', array('@url' => url('user/password'))));
      }
      else {
        // We did not find a uid, so the limit is IP-based.
        form_set_error('name', t('Sorry, too many failed login attempts from your IP address. This IP address is temporarily blocked. Try again later or <a href="@url">request a new password</a>.', array('@url' => url('user/password'))));
      }
    }
    else {
      form_set_error('name', t('Sorry, unrecognized username or password. <a href="@password">Have you forgotten your password?</a>', array('@password' => url('user/password'))));
      watchdog('user', 'Login attempt failed for %user.', array('%user' => $form_state['values']['name']));
    }
  }
  elseif (isset($form_state['flood_control_user_identifier'])) {
    // Clear past failures for this user so as not to block a user who might
    // log in and out more than once in an hour.
    flood_clear_event('failed_login_attempt_user', $form_state['flood_control_user_identifier']);
  }
}

/**
 * Try to validate the user's login credentials locally.
 *
 * @param $name
 *   User name to authenticate.
 * @param $password
 *   A plain-text password, such as trimmed text from form values.
 * @return
 *   The user's uid on success, or FALSE on failure to authenticate.
 */
function user_authenticate($name, $password) {
  $uid = FALSE;
  if (!empty($name) && !empty($password)) {
    $account = user_load_by_name($name);
    if ($account) {
      // Allow alternate password hashing schemes.
      require_once DRUPAL_ROOT . '/' . variable_get('password_inc', 'includes/password.inc');
      if (user_check_password($password, $account)) {
        // Successful authentication.
        $uid = $account->uid;

        // Update user to new password scheme if needed.
        if (user_needs_new_hash($account)) {
          user_save($account, array('pass' => $password));
        }
      }
    }
  }
  return $uid;
}

/**
 * Finalize the login process. Must be called when logging in a user.
 *
 * The function records a watchdog message about the new session, saves the
 * login timestamp, calls hook_user op 'login' and generates a new session. *
 */
function user_login_finalize(&$edit = array()) {
  global $user;
  watchdog('user', 'Session opened for %name.', array('%name' => $user->name));
  // Update the user table timestamp noting user has logged in.
  // This is also used to invalidate one-time login links.
  $user->login = REQUEST_TIME;
  db_update('users')
    ->fields(array('login' => $user->login))
    ->condition('uid', $user->uid)
    ->execute();

  // Regenerate the session ID to prevent against session fixation attacks.
  // This is called before hook_user in case one of those functions fails
  // or incorrectly does a redirect which would leave the old session in place.
  drupal_session_regenerate();

  user_module_invoke('login', $edit, $user);
}

/**
 * Submit handler for the login form. Load $user object and perform standard login
 * tasks. The user is then redirected to the My Account page. Setting the
 * destination in the query string overrides the redirect.
 */
function user_login_submit($form, &$form_state) {
  global $user;
  $user = user_load($form_state['uid']);
  $form_state['redirect'] = 'user/' . $user->uid;

  user_login_finalize($form_state);
}

/**
 * Helper function for authentication modules. Either logs in or registers
 * the current user, based on username. Either way, the global $user object is
 * populated and login tasks are performed.
 */
function user_external_login_register($name, $module) {
  $account = user_external_load($name);
  if (!$account) {
    // Register this new user.
    $userinfo = array(
      'name' => $name,
      'pass' => user_password(),
      'init' => $name,
      'status' => 1,
      'access' => REQUEST_TIME
    );
    $account = user_save(drupal_anonymous_user(), $userinfo);
    // Terminate if an error occurred during user_save().
    if (!$account) {
      drupal_set_message(t("Error saving user account."), 'error');
      return;
    }
    user_set_authmaps($account, array("authname_$module" => $name));
  }

  // Log user in.
  $form_state['uid'] = $account->uid;
  user_login_submit(array(), $form_state);
}

/**
 * Generates a unique URL for a user to login and reset their password.
 *
 * @param object $account
 *   An object containing the user account.
 *
 * @return
 *   A unique URL that provides a one-time log in for the user, from which
 *   they can change their password.
 */
function user_pass_reset_url($account) {
  $timestamp = REQUEST_TIME;
  return url("user/reset/$account->uid/$timestamp/" . user_pass_rehash($account->pass, $timestamp, $account->login), array('absolute' => TRUE));
}

/**
 * Generates a URL to confirm an account cancellation request.
 *
 * @param object $account
 *   The user account object, which must contain at least the following
 *   properties:
 *   - uid: The user uid number.
 *   - pass: The hashed user password string.
 *   - login: The user login name.
 *
 * @return
 *   A unique URL that may be used to confirm the cancellation of the user
 *   account.
 *
 * @see user_mail_tokens()
 * @see user_cancel_confirm()
 */
function user_cancel_url($account) {
  $timestamp = REQUEST_TIME;
  return url("user/$account->uid/cancel/confirm/$timestamp/" . user_pass_rehash($account->pass, $timestamp, $account->login), array('absolute' => TRUE));
}

/**
 * Creates a unique hash value for use in time-dependent per-user URLs.
 *
 * This hash is normally used to build a unique and secure URL that is sent to
 * the user by email for purposes such as resetting the user's password. In
 * order to validate the URL, the same hash can be generated again, from the
 * same information, and compared to the hash value from the URL. The URL
 * normally contains both the time stamp and the numeric user ID. The login
 * name and hashed password are retrieved from the database as necessary. For a
 * usage example, see user_cancel_url() and user_cancel_confirm().
 *
 * @param $password
 *   The hashed user account password value.
 * @param $timestamp
 *   A unix timestamp.
 * @param $login
 *   The user account login name.
 *
 * @return
 *   A string that is safe for use in URLs and SQL statements.
 */
function user_pass_rehash($password, $timestamp, $login) {
  return drupal_hmac_base64($timestamp . $login, drupal_get_hash_salt() . $password);
}

/**
 * Cancel a user account.
 *
 * Since the user cancellation process needs to be run in a batch, either
 * Form API will invoke it, or batch_process() needs to be invoked after calling
 * this function and should define the path to redirect to.
 *
 * @param $edit
 *   An array of submitted form values.
 * @param $uid
 *   The user ID of the user account to cancel.
 * @param $method
 *   The account cancellation method to use.
 *
 * @see _user_cancel()
 */
function user_cancel($edit, $uid, $method) {
  global $user;

  $account = user_load($uid);

  if (!$account) {
    drupal_set_message(t('The user account %id does not exist.', array('%id' => $uid)), 'error');
    watchdog('user', 'Attempted to cancel non-existing user account: %id.', array('%id' => $uid), WATCHDOG_ERROR);
    return;
  }

  // Initialize batch (to set title).
  $batch = array(
    'title' => t('Cancelling account'),
    'operations' => array(),
  );
  batch_set($batch);

  // Modules use hook_user_delete() to respond to deletion.
  if ($method != 'user_cancel_delete') {
    // Allow modules to add further sets to this batch.
    module_invoke_all('user_cancel', $edit, $account, $method);
  }

  // Finish the batch and actually cancel the account.
  $batch = array(
    'title' => t('Cancelling user account'),
    'operations' => array(
      array('_user_cancel', array($edit, $account, $method)),
    ),
  );
  batch_set($batch);

  // Batch processing is either handled via Form API or has to be invoked
  // manually.
}

/**
 * Last batch processing step for cancelling a user account.
 *
 * Since batch and session API require a valid user account, the actual
 * cancellation of a user account needs to happen last.
 *
 * @see user_cancel()
 */
function _user_cancel($edit, $account, $method) {
  global $user;

  switch ($method) {
    case 'user_cancel_block':
    case 'user_cancel_block_unpublish':
    default:
      // Send account blocked notification if option was checked.
      if (!empty($edit['user_cancel_notify'])) {
        _user_mail_notify('status_blocked', $account);
      }
      user_save($account, array('status' => 0));
      drupal_set_message(t('%name has been disabled.', array('%name' => $account->name)));
      watchdog('user', 'Blocked user: %name %email.', array('%name' => $account->name, '%email' => '<' . $account->mail . '>'), WATCHDOG_NOTICE);
      break;

    case 'user_cancel_reassign':
    case 'user_cancel_delete':
      // Send account canceled notification if option was checked.
      if (!empty($edit['user_cancel_notify'])) {
        _user_mail_notify('status_canceled', $account);
      }
      user_delete($account->uid);
      drupal_set_message(t('%name has been deleted.', array('%name' => $account->name)));
      watchdog('user', 'Deleted user: %name %email.', array('%name' => $account->name, '%email' => '<' . $account->mail . '>'), WATCHDOG_NOTICE);
      break;
  }

  // After cancelling account, ensure that user is logged out.
  if ($account->uid == $user->uid) {
    // Destroy the current session, and reset $user to the anonymous user.
    session_destroy();
  }

  // Clear the cache for anonymous users.
  cache_clear_all();
}

/**
 * Delete a user.
 *
 * @param $uid
 *   A user ID.
 */
function user_delete($uid) {
  user_delete_multiple(array($uid));
}

/**
 * Delete multiple user accounts.
 *
 * @param $uids
 *   An array of user IDs.
 */
function user_delete_multiple(array $uids) {
  if (!empty($uids)) {
    $accounts = user_load_multiple($uids, array());

    $transaction = db_transaction();
    try {
      foreach ($accounts as $uid => $account) {
        module_invoke_all('user_delete', $account);
        module_invoke_all('entity_delete', $account, 'user');
        field_attach_delete('user', $account);
        drupal_session_destroy_uid($account->uid);
      }

      db_delete('users')
        ->condition('uid', $uids, 'IN')
        ->execute();
      db_delete('users_roles')
        ->condition('uid', $uids, 'IN')
        ->execute();
      db_delete('authmap')
        ->condition('uid', $uids, 'IN')
        ->execute();
    }
    catch (Exception $e) {
      $transaction->rollback();
      watchdog_exception('user', $e);
      throw $e;
    }
    entity_get_controller('user')->resetCache();
  }
}

/**
 * Page callback wrapper for user_view().
 */
function user_view_page($account) {
  // An administrator may try to view a non-existent account,
  // so we give them a 404 (versus a 403 for non-admins).
  return is_object($account) ? user_view($account) : MENU_NOT_FOUND;
}

/**
 * Generate an array for rendering the given user.
 *
 * When viewing a user profile, the $page array contains:
 *
 * - $page['content']['Profile Category']:
 *   Profile categories keyed by their human-readable names.
 * - $page['content']['Profile Category']['profile_machine_name']:
 *   Profile fields keyed by their machine-readable names.
 * - $page['content']['user_picture']:
 *   User's rendered picture.
 * - $page['content']['summary']:
 *   Contains the default "History" profile data for a user.
 * - $page['content']['#account']:
 *   The user account of the profile being viewed.
 *
 * To theme user profiles, copy modules/user/user-profile.tpl.php
 * to your theme directory, and edit it as instructed in that file's comments.
 *
 * @param $account
 *   A user object.
 * @param $view_mode
 *   View mode, e.g. 'full'.
 * @param $langcode
 *   (optional) A language code to use for rendering. Defaults to the global
 *   content language of the current request.
 *
 * @return
 *   An array as expected by drupal_render().
 */
function user_view($account, $view_mode = 'full', $langcode = NULL) {
  if (!isset($langcode)) {
    $langcode = $GLOBALS['language_content']->language;
  }

  // Retrieve all profile fields and attach to $account->content.
  user_build_content($account, $view_mode, $langcode);

  $build = $account->content;
  // We don't need duplicate rendering info in account->content.
  unset($account->content);

  $build += array(
    '#theme' => 'user_profile',
    '#account' => $account,
    '#view_mode' => $view_mode,
    '#language' => $langcode,
  );

  // Allow modules to modify the structured user.
  $type = 'user';
  drupal_alter(array('user_view', 'entity_view'), $build, $type);

  return $build;
}

/**
 * Builds a structured array representing the profile content.
 *
 * @param $account
 *   A user object.
 * @param $view_mode
 *   View mode, e.g. 'full'.
 * @param $langcode
 *   (optional) A language code to use for rendering. Defaults to the global
 *   content language of the current request.
 */
function user_build_content($account, $view_mode = 'full', $langcode = NULL) {
  if (!isset($langcode)) {
    $langcode = $GLOBALS['language_content']->language;
  }

  // Remove previously built content, if exists.
  $account->content = array();

  // Build fields content.
  field_attach_prepare_view('user', array($account->uid => $account), $view_mode, $langcode);
  entity_prepare_view('user', array($account->uid => $account), $langcode);
  $account->content += field_attach_view('user', $account, $view_mode, $langcode);

  // Populate $account->content with a render() array.
  module_invoke_all('user_view', $account, $view_mode, $langcode);
  module_invoke_all('entity_view', $account, 'user', $view_mode, $langcode);
}

/**
 * Implements hook_mail().
 */
function user_mail($key, &$message, $params) {
  $language = $message['language'];
  $variables = array('user' => $params['account']);
  $message['subject'] .= _user_mail_text($key . '_subject', $language, $variables);
  $message['body'][] = _user_mail_text($key . '_body', $language, $variables);
}

/**
 * Returns a mail string for a variable name.
 *
 * Used by user_mail() and the settings forms to retrieve strings.
 */
function _user_mail_text($key, $language = NULL, $variables = array(), $replace = TRUE) {
  $langcode = isset($language) ? $language->language : NULL;

  if ($admin_setting = variable_get('user_mail_' . $key, FALSE)) {
    // An admin setting overrides the default string.
    $text = $admin_setting;
  }
  else {
    // No override, return default string.
    switch ($key) {
      case 'register_no_approval_required_subject':
        $text = t('Account details for [user:name] at [site:name]', array(), array('langcode' => $langcode));
        break;
      case 'register_no_approval_required_body':
        $text = t("[user:name],

Thank you for registering at [site:name]. You may now log in by clicking this link or copying and pasting it to your browser:

[user:one-time-login-url]

This link can only be used once to log in and will lead you to a page where you can set your password.

After setting your password, you will be able to log in at [site:login-url] in the future using:

username: [user:name]
password: Your password

--  [site:name] team", array(), array('langcode' => $langcode));
        break;

      case 'register_admin_created_subject':
        $text = t('An administrator created an account for you at [site:name]', array(), array('langcode' => $langcode));
        break;
      case 'register_admin_created_body':
        $text = t("[user:name],

A site administrator at [site:name] has created an account for you. You may now log in by clicking this link or copying and pasting it to your browser:

[user:one-time-login-url]

This link can only be used once to log in and will lead you to a page where you can set your password.

After setting your password, you will be able to log in at [site:login-url] in the future using:

username: [user:name]
password: Your password

--  [site:name] team", array(), array('langcode' => $langcode));
        break;

      case 'register_pending_approval_subject':
      case 'register_pending_approval_admin_subject':
        $text = t('Account details for [user:name] at [site:name] (pending admin approval)', array(), array('langcode' => $langcode));
        break;
      case 'register_pending_approval_body':
        $text = t("[user:name],

Thank you for registering at [site:name]. Your application for an account is currently pending approval. Once it has been approved, you will receive another e-mail containing information about how to log in, set your password, and other details.


--  [site:name] team", array(), array('langcode' => $langcode));
        break;
      case 'register_pending_approval_admin_body':
        $text = t("[user:name] has applied for an account.

[user:edit-url]", array(), array('langcode' => $langcode));
        break;

      case 'password_reset_subject':
        $text = t('Replacement login information for [user:name] at [site:name]', array(), array('langcode' => $langcode));
        break;
      case 'password_reset_body':
        $text = t("[user:name],

A request to reset the password for your account has been made at [site:name].

You may now log in by clicking this link or copying and pasting it to your browser:

[user:one-time-login-url]

This link can only be used once to log in and will lead you to a page where you can set your password. It expires after one day and nothing will happen if it's not used.

--  [site:name] team", array(), array('langcode' => $langcode));
        break;

      case 'status_activated_subject':
        $text = t('Account details for [user:name] at [site:name] (approved)', array(), array('langcode' => $langcode));
        break;
      case 'status_activated_body':
        $text = t("[user:name],

Your account at [site:name] has been activated.

You may now log in by clicking this link or copying and pasting it into your browser:

[user:one-time-login-url]

This link can only be used once to log in and will lead you to a page where you can set your password.

After setting your password, you will be able to log in at [site:login-url] in the future using:

username: [user:name]
password: Your password

--  [site:name] team", array(), array('langcode' => $langcode));
        break;

      case 'status_blocked_subject':
        $text = t('Account details for [user:name] at [site:name] (blocked)', array(), array('langcode' => $langcode));
        break;
      case 'status_blocked_body':
        $text = t("[user:name],

Your account on [site:name] has been blocked.

--  [site:name] team", array(), array('langcode' => $langcode));
     note that
 * this returns a reference, so be careful! You can unintentionally modify the
 * $view object.
 */
function &views_get_page_view() {
  return views_set_page_view();
}

/**
 * Set the current 'current view' that is being built/rendered so that it is
 * easy for other modules or items in drupal_eval to identify
 */
function &views_set_current_view($view = NULL) {
  static $cache = NULL;
  if (isset($view)) {
    $cache = $view;
  }

  return $cache;
}

/**
 * Find out what, if any, current view is currently in use. Please note that
 * this returns a reference, so be careful! You can unintentionally modify the
 * $view object.
 */
function &views_get_current_view() {
  return views_set_current_view();
}

// ------------------------------------------------------------------
// Include file helpers

/**
 * Include views .inc files as necessary.
 */
function views_include($file) {
  ctools_include($file, 'views');
}

/**
 * Load views files on behalf of modules.
 */
function views_module_include($api, $reset = FALSE) {
  if ($reset) {
    $cache = &drupal_static('ctools_plugin_api_info');
    if (isset($cache['views']['views'])) {
      unset($cache['views']['views']);
    }
  }
  ctools_include('plugins');
  return ctools_plugin_api_include('views', $api, views_api_minimum_version(), views_api_version());
}

/**
 * Get a list of modules that support the current views API.
 */
function views_get_module_apis($api = 'views', $reset = FALSE) {
  if ($reset) {
    $cache = &drupal_static('ctools_plugin_api_info');
    if (isset($cache['views']['views'])) {
      unset($cache['views']['views']);
    }
  }
  ctools_include('plugins');
  return ctools_plugin_api_info('views', $api, views_api_minimum_version(), views_api_version());
}

/**
 * Include views .css files.
 */
function views_add_css($file) {
  // We set preprocess to FALSE because we are adding the files conditionally,
  // and we don't want to generate duplicate cache files.
  // TODO: at some point investigate adding some files unconditionally and
  // allowing preprocess.
  drupal_add_css(drupal_get_path('module', 'views') . "/css/$file.css", array('preprocess' => FALSE));
}

/**
 * Include views .js files.
 */
function views_add_js($file) {
  // If javascript has been disabled by the user, never add js files.
  if (variable_get('views_no_javascript', FALSE)) {
    return;
  }
  static $base = TRUE, $ajax = TRUE;
  if ($base) {
    drupal_add_js(drupal_get_path('module', 'views') . "/js/base.js");
    $base = FALSE;
  }
  if ($ajax && in_array($file, array('ajax', 'ajax_view'))) {
    drupal_add_library('system', 'drupal.ajax');
    drupal_add_library('system', 'jquery.form');
    $ajax = FALSE;
  }
  ctools_add_js($file, 'views');
}

/**
 * Load views files on behalf of modules.
 */
function views_include_handlers($reset = FALSE) {
  static $finished = FALSE;
  // Ensure this only gets run once.
  if ($finished && !$reset) {
    return;
  }

  views_include('base');
  views_include('handlers');
  views_include('cache');
  views_include('plugins');
  views_module_include('views', $reset);
  $finished = TRUE;
}

// -----------------------------------------------------------------------
// Views handler functions

/**
 * Fetch a handler from the data cache.
 *
 * @param $table
 *   The name of the table this handler is from.
 * @param $field
 *   The name of the field this handler is from.
 * @param $key
 *   The type of handler. i.e, sort, field, argument, filter, relationship
 * @param $override
 *   Override the actual handler object with this class. Used for
 *   aggregation when the handler is redirected to the aggregation
 *   handler.
 *
 * @return views_handler
 *   An instance of a handler object. May be views_handler_broken.
 */
function views_get_handler($table, $field, $key, $override = NULL) {
  static $recursion_protection = array();

  $data = views_fetch_data($table, FALSE);
  $handler = NULL;

  // Support old views_data entries conversion.

  // Support conversion on table level.
  if (isset($data['moved to'])) {
    $moved = array($data['moved to'], $field);
  }
  // Support conversion on datafield level.
  if (isset($data[$field]['moved to'])) {
    $moved = $data[$field]['moved to'];
  }
  // Support conversion on handler level.
  if (isset($data[$field][$key]['moved to'])) {
    $moved = $data[$field][$key]['moved to'];
  }

  if (isset($data[$field][$key]) || !empty($moved)) {
    if (!empty($moved)) {
      list($moved_table, $moved_field) = $moved;
      if (!empty($recursion_protection[$moved_table][$moved_field])) {
        // recursion detected!
        return NULL;
      }

      $recursion_protection[$moved_table][$moved_field] = TRUE;
      $handler = views_get_handler($moved_table, $moved_field, $key, $override);
      $recursion_protection = array();
      if ($handler) {
        // store these values so we know what we were originally called.
        $handler->original_table = $table;
        $handler->original_field = $field;
        if (empty($handler->actual_table)) {
          $handler->actual_table = $moved_table;
          $handler->actual_field = $moved_field;
        }
      }
      return $handler;
    }

    // Set up a default handler:
    if (empty($data[$field][$key]['handler'])) {
      $data[$field][$key]['handler'] = 'views_handler_' . $key;
    }

    if ($override) {
      $data[$field][$key]['override handler'] = $override;
    }

    $handler = _views_prepare_handler($data[$field][$key], $data, $field, $key);
  }

  if ($handler) {
    return $handler;
  }

  // DEBUG -- identify missing handlers
  vpr("Missing handler: $table $field $key");
  $broken = array(
    'title' => t('Broken handler @table.@field', array('@table' => $table, '@field' => $field)),
    'handler' => 'views_handler_' . $key . '_broken',
    'table' => $table,
    'field' => $field,
  );
  return _views_create_handler($broken, 'handler', $key);
}

/**
 * Fetch Views' data from the cache
 */
function views_fetch_data($table = NULL, $move = TRUE, $reset = FALSE) {
  views_include('cache');
  return _views_fetch_data($table, $move, $reset);
}

// -----------------------------------------------------------------------
// Views plugin functions

/**
 * Fetch the plugin data from cache.
 */
function views_fetch_plugin_data($type = NULL, $plugin = NULL, $reset = FALSE) {
  views_include('cache');
  return _views_fetch_plugin_data($type, $plugin, $reset);
}

/**
 * Fetch a list of all base tables available
 *
 * @param $type
 *   Either 'display', 'style' or 'row'
 * @param $key
 *   For style plugins, this is an optional type to restrict to. May be 'normal',
 *   'summary', 'feed' or others based on the neds of the display.
 * @param $base
 *   An array of possible base tables.
 *
 * @return
 *   A keyed array of in the form of 'base_table' => 'Description'.
 */
function views_fetch_plugin_names($type, $key = NULL, $base = array()) {
  $data = views_fetch_plugin_data();

  $plugins[$type] = array();

  foreach ($data[$type] as $id => $plugin) {
    // Skip plugins that don't conform to our key.
    if ($key && (empty($plugin['type']) || $plugin['type'] != $key)) {
      continue;
    }
    if (empty($plugin['no ui']) && (empty($base) || empty($plugin['base']) || array_intersect($base, $plugin['base']))) {
      $plugins[$type][$id] = $plugin['title'];
    }
  }

  if (!empty($plugins[$type])) {
    asort($plugins[$type]);
    return $plugins[$type];
  }
  // fall-through
  return array();
}

/**
 * Get a handler for a plugin
 *
 * @return views_plugin
 *
 * The created plugin object.
 */
function views_get_plugin($type, $plugin, $reset = FALSE) {
  views_include('handlers');
  $definition = views_fetch_plugin_data($type, $plugin, $reset);
  if (!empty($definition)) {
    return _views_create_handler($definition, $type);
  }
}

/**
 * Load the current enabled localization plugin.
 *
 * @return The name of the localization plugin.
 */
function views_get_localization_plugin() {
  $plugin = variable_get('views_localization_plugin', '');
  // Provide sane default values for the localization plugin.
  if (empty($plugin)) {
    if (module_exists('locale')) {
      $p 'access user profiles' => 1,            // Grant 'access user profiles'
 *       'access content' => TRUE,               // Grant 'access content'
 *       'access comments' => 'access comments', // Grant 'access comments'
 *     )
 *   @endcode
 *   Existing permissions are not changed, unless specified in $permissions.
 *
 * @see user_role_grant_permissions()
 * @see user_role_revoke_permissions()
 */
function user_role_change_permissions($rid, array $permissions = array()) {
  // Grant new permissions for the role.
  $grant = array_filter($permissions);
  if (!empty($grant)) {
    user_role_grant_permissions($rid, array_keys($grant));
  }
  // Revoke permissions for the role.
  $revoke = array_diff_assoc($permissions, $grant);
  if (!empty($revoke)) {
    user_role_revoke_permissions($rid, array_keys($revoke));
  }
}

/**
 * Grant permissions to a user role.
 *
 * @param $rid
 *   The ID of a user role to alter.
 * @param $permissions
 *   A list of permission names to grant.
 *
 * @see user_role_change_permissions()
 * @see user_role_revoke_permissions()
 */
function user_role_grant_permissions($rid, array $permissions = array()) {
  $modules = user_permission_get_modules();
  // Grant new permissions for the role.
  foreach ($permissions as $name) {
    db_merge('role_permission')
      ->key(array(
        'rid' => $rid,
        'permission' => $name,
      ))
      ->fields(array(
        'module' => $modules[$name],
      ))
      ->execute();
  }

  // Clear the user access cache.
  drupal_static_reset('user_access');
  drupal_static_reset('user_role_permissions');
}

/**
 * Revoke permissions from a user role.
 *
 * @param $rid
 *   The ID of a user role to alter.
 * @param $permissions
 *   A list of permission names to revoke.
 *
 * @see user_role_change_permissions()
 * @see user_role_grant_permissions()
 */
function user_role_revoke_permissions($rid, array $permissions = array()) {
  // Revoke permissions for the role.
  db_delete('role_permission')
    ->condition('rid', $rid)
    ->condition('permission', $permissions, 'IN')
    ->execute();

  // Clear the user access cache.
  drupal_static_reset('user_access');
  drupal_static_reset('user_role_permissions');
}

/**
 * Implements hook_user_operations().
 */
function user_user_operations($form = array(), $form_state = array()) {
  $operations = array(
    'unblock' => array(
      'label' => t('Unblock the selected users'),
      'callback' => 'user_user_operations_unblock',
    ),
    'block' => array(
      'label' => t('Block the selected users'),
      'callback' => 'user_user_operations_block',
    ),
    'cancel' => array(
      'label' => t('Cancel the selected user accounts'),
    ),
  );

  if (user_access('administer permissions')) {
    $roles = user_roles(TRUE);
    unset($roles[DRUPAL_AUTHENTICATED_RID]);  // Can't edit authenticated role.

    $add_roles = array();
    foreach ($roles as $key => $value) {
      $add_roles['add_role-' . $key] = $value;
    }

    $remove_roles = array();
    foreach ($roles as $key => $value) {
      $remove_roles['remove_role-' . $key] = $value;
    }

    if (count($roles)) {
      $role_operations = array(
        t('Add a role to the selected users') => array(
          'label' => $add_roles,
        ),
        t('Remove a role from the selected users') => array(
          'label' => $remove_roles,
        ),
      );

      $operations += $role_operations;
    }
  }

  // If the form has been posted, we need to insert the proper data for
  // role editing if necessary.
  if (!empty($form_state['submitted'])) {
    $operation_rid = explode('-', $form_state['values']['operation']);
    $operation = $operation_rid[0];
    if ($operation == 'add_role' || $operation == 'remove_role') {
      $rid = $operation_rid[1];
      if (user_access('administer permissions')) {
        $operations[$form_state['values']['operation']] = array(
          'callback' => 'user_multiple_role_edit',
          'callback arguments' => array($operation, $rid),
        );
      }
      else {
        watchdog('security', 'Detected malicious attempt to alter protected user fields.', array(), WATCHDOG_WARNING);
        return;
      }
    }
  }

  return $operations;
}

/**
 * Callback function for admin mass unblocking users.
 */
function user_user_operations_unblock($accounts) {
  $accounts = user_load_multiple($accounts);
  foreach ($accounts as $account) {
    // Skip unblocking user if they are already unblocked.
    if ($account !== FALSE && $account->status == 0) {
      user_save($account, array('status' => 1));
    }
  }
}

/**
 * Callback function for admin mass blocking users.
 */
function user_user_operations_block($accounts) {
  $accounts = user_load_multiple($accounts);
  foreach ($accounts as $account) {
    // Skip blocking user if they are already blocked.
    if ($account !== FALSE && $account->status == 1) {
      // For efficiency manually save the original account before applying any
      // changes.
      $account->original = clone $account;
      user_save($account, array('status' => 0));
    }
  }
}

/**
 * Callback function for admin mass adding/deleting a user role.
 */
function user_multiple_role_edit($accounts, $operation, $rid) {
  // The role name is not necessary as user_save() will reload the user
  // object, but some modules' hook_user() may look at this first.
  $role_name = db_query('SELECT name FROM {role} WHERE rid = :rid', array(':rid' => $rid))->fetchField();

  switch ($operation) {
    case 'add_role':
      $accounts = user_load_multiple($accounts);
      foreach ($accounts as $account) {
        // Skip adding the role to the user if they already have it.
        if ($account !== FALSE && !isset($account->roles[$rid])) {
          $roles = $account->roles + array($rid => $role_name);
          // For efficiency manually save the original account before applying
          // any changes.
          $account->original = clone $account;
          user_save($account, array('roles' => $roles));
        }
      }
      break;
    case 'remove_role':
      $accounts = user_load_multiple($accounts);
      foreach ($accounts as $account) {
        // Skip removing the role from the user if they already don't have it.
        if ($account !== FALSE && isset($account->roles[$rid])) {
          $roles = array_diff($account->roles, array($rid => $role_name));
          // For efficiency manually save the original account before applying
          // any changes.
          $account->original = clone $account;
          user_save($account, array('roles' => $roles));
        }
      }
      break;
  }
}

function user_multiple_cancel_confirm($form, &$form_state) {
  $edit = $form_state['input'];

  $form['accounts'] = array('#prefix' => '<ul>', '#suffix' => '</ul>', '#tree' => TRUE);
  $accounts = user_load_multiple(array_keys(array_filter($edit['accounts'])));
  foreach ($accounts as $uid => $account) {
    // Prevent user 1 from being canceled.
    if ($uid <= 1) {
      continue;
    }
    $form['accounts'][$uid] = array(
      '#type' => 'hidden',
      '#value' => $uid,
      '#prefix' => '<li>',
      '#suffix' => check_plain($account->name) . "</li>\n",
    );
  }

  // Output a notice that user 1 cannot be canceled.
  if (isset($accounts[1])) {
    $redirect = (count($accounts) == 1);
    $message = t('The user account %name cannot be cancelled.', array('%name' => $accounts[1]->name));
    drupal_set_message($message, $redirect ? 'error' : 'warning');
    // If only user 1 was selected, redirect to the overview.
    if ($redirect) {
      drupal_goto('admin/people');
    }
  }

  $form['operation'] = array('#type' => 'hidden', '#value' => 'cancel');

  module_load_include('inc', 'user', 'user.pages');
  $form['user_cancel_method'] = array(
    '#type' => 'item',
    '#title' => t('When cancelling these accounts'),
  );
  $form['user_cancel_method'] += user_cancel_methods();
  // Remove method descriptions.
  foreach (element_children($form['user_cancel_method']) as $element) {
    unset($form['user_cancel_method'][$element]['#description']);
  }

  // Allow to send the account cancellation confirmation mail.
  $form['user_cancel_confirm'] = array(
    '#type' => 'checkbox',
    '#title' => t('Require e-mail confirmation to cancel account.'),
    '#default_value' => FALSE,
    '#description' => t('When enabled, the user must confirm the account cancellation via e-mail.'),
  );
  // Also allow to send account canceled notification mail, if enabled.
  $form['user_cancel_notify'] = array(
    '#type' => 'checkbox',
    '#title' => t('Notify user when account is canceled.'),
    '#default_value' => FALSE,
    '#access' => variable_get('user_mail_status_canceled_notify', FALSE),
    '#description' => t('When enabled, the user will receive an e-mail notification after the account has been cancelled.'),
  );

  return confirm_form($form,
                      t('Are you sure you want to cancel these user accounts?'),
                      'admin/people', t('This action cannot be undone.'),
                      t('Cancel accounts'), t('Cancel'));
}

/**
 * Submit handler for mass-account cancellation form.
 *
 * @see user_multiple_cancel_confirm()
 * @see user_cancel_confirm_form_submit()
 */
function user_multiple_cancel_confirm_submit($form, &$form_state) {
  global $user;

  if ($form_state['values']['confirm']) {
    foreach ($form_state['values']['accounts'] as $uid => $value) {
      // Prevent programmatic form submissions from cancelling user 1.
      if ($uid <= 1) {
        continue;
      }
      // Prevent user administrators from deleting themselves without confirmation.
      if ($uid == $user->uid) {
        $admin_form_state = $form_state;
        unset($admin_form_state['values']['user_cancel_confirm']);
        $admin_form_state['values']['_account'] = $user;
        user_cancel_confirm_form_submit(array(), $admin_form_state);
      }
      else {
        user_cancel($form_state['values'], $uid, $form_state['values']['user_cancel_method']);
      }
    }
  }
  $form_state['redirect'] = 'admin/people';
}

/**
 * Retrieve a list of all user setting/information categories and sort them by weight.
 */
function _user_categories() {
  $categories = module_invoke_all('user_categories');
  usort($categories, '_user_sort');

  return $categories;
}

function _user_sort($a, $b) {
  $a = (array) $a + array('weight' => 0, 'title' => '');
  $b = (array) $b + array('weight' => 0, 'title' => '');
  return $a['weight'] < $b['weight'] ? -1 : ($a['weight'] > $b['weight'] ? 1 : ($a['title'] < $b['title'] ? -1 : 1));
}

/**
 * List user administration filters that can be applied.
 */
function user_filters() {
  // Regular filters
  $filters = array();
  $roles = user_roles(TRUE);
  unset($roles[DRUPAL_AUTHENTICATED_RID]); // Don't list authorized role.
  if (count($roles)) {
    $filters['role'] = array(
      'title' => t('role'),
      'field' => 'ur.rid',
      'options' => array(
        '[any]' => t('any'),
      ) + $roles,
    );
  }

  $options = array();
  foreach (module_implements('permission') as $module) {
    $function = $module . '_permission';
    if ($permissions = $function('permission')) {
      asort($permissions);
      foreach ($permissions as $permission => $description) {
        $options[t('@module module', array('@module' => $module))][$permission] = t($permission);
      }
    }
  }
  ksort($options);
  $filters['permission'] = array(
    'title' => t('permission'),
    'options' => array(
      '[any]' => t('any'),
    ) + $options,
  );

  $filters['status'] = array(
    'title' => t('status'),
    'field' => 'u.status',
    'options' => array(
      '[any]' => t('any'),
      1 => t('active'),
      0 => t('blocked'),
    ),
  );
  return $filters;
}

/**
 * Extends a query object for user administration filters based on session.
 *
 * @param $query
 *   Query object that should be filtered.
 */
function user_build_filter_query(SelectQuery $query) {
  $filters = user_filters();
  // Extend Query with filter conditions.
  foreach (isset($_SESSION['user_overview_filter']) ? $_SESSION['user_overview_filter'] : array() as $filter) {
    list($key, $value) = $filter;
    // This checks to see if this permission fig the view.
 */
function views_ui_cache_load($name) {
  ctools_include('object-cache');
  views_include('view');
  $view = ctools_object_cache_get('view', $name);
  $original_view = views_get_view($name);

  if (empty($view)) {
    $view = $original_view;
    if (!empty($view)) {
      // Check to see if someone else is already editing this view.
      $view->locked = ctools_object_cache_test('view', $view->name);
      // Set a flag to indicate that this view is being edited.
      // This flag will be used e.g. to determine whether strings
      // should be localized.
      $view->editing = TRUE;
    }
  }
  else {
    // Keep disabled/enabled status real.
    if ($original_view) {
      $view->disabled = !empty($original_view->disabled);
    }
  }

  if (empty($view)) {
    return FALSE;
  }

  else {
    return $view;
  }
}

/**
 * Specialized cache function to add a flag to our view, include an appropriate
 * include, and cache more easily.
 */
function views_ui_cache_set(&$view) {
  if (!empty($view->locked)) {
    drupal_set_message(t('Changes cannot be made to a locked view.'), 'error');
    return;
  }
  ctools_include('object-cache');
  $view->changed = TRUE; // let any future object know that this view has changed.

  if (isset($view->current_display)) {
    // Add the knowledge of the changed display, too.
    $view->changed_display[$view->current_display] = TRUE;
    unset($view->current_display);
  }

  // Unset handlers; we don't want to write these into the cache
  unset($view->display_handler);
  unset($view->default_display);
  $view->query = NULL;
  foreach (array_keys($view->display) as $id) {
    unset($view->display[$id]->handler);
    unset($view->display[$id]->default_display);
  }
  ctools_object_cache_set('view', $view->name, $view);
}


/**
 * Specialized menu callback to load a view that is only a default
 * view.
 */
function views_ui_default_load($name) {
  $view = views_get_view($name);
  if ($view->type == t('Default')) {
    return $view;
  }

  return FALSE;
}

/**
 * Theme preprocess for views-view.tpl.php.
 */
function views_ui_preprocess_views_view(&$vars) {
  $view = $vars['view'];
  if (!empty($view->views_ui_context) && module_exists('contextual')) {
    $view->hide_admin_links = TRUE;
    foreach (array('title', 'header', 'exposed', 'rows', 'pager', 'more', 'footer', 'empty', 'attachment_after', 'attachment_before') as $section) {
      if (!empty($vars[$section])) {
        $vars[$section] = array(
          '#theme' => 'views_ui_view_preview_section',
          '#view' => $view,
          '#section' => $section,
          '#content' => $vars[$section],
          '#theme_wrappers' => array('views_container'),
          '#attributes' => array('class' => 'contextual-links-region'),
        );
        $vars[$section] = drupal_render($vars[$section]);
      }
    }
  }
}

/**
 * Theme preprocess for theme_views_ui_view_preview_section().
 *
 * @TODO
 *    Perhaps move this to includes/admin.inc or theme/theme.inc
 */
function template_preprocess_views_ui_view_preview_section(&$vars) {
  switch ($vars['section']) {
    case 'title':
      $vars['title'] = t('Title');
      $links = views_ui_view_preview_section_display_category_links($vars['view'], 'title', $vars['title']);
      break;
    case 'header':
      $vars['title'] = t('Header');
      $links = views_ui_view_preview_section_handler_links($vars['view'], $vars['section']);
      break;
    case 'empty':
      $vars['title'] = t('No results behavior');
      $links = views_ui_view_preview_section_handler_links($vars['view'], $vars['section']);
      break;
    case 'exposed':
      // @todo Sorts can be exposed too, so we may need a better title.
      $vars['title'] = t('Exposed Filters');
      $links = views_ui_view_preview_section_display_category_links($vars['view'], 'exposed_form_options', $vars['title']);
      break;
    case 'rows':
      // @todo The title needs to depend on what is being viewed.
      $vars['title'] = t('Content');
      $links = views_ui_view_preview_section_rows_links($vars['view']);
      break;p, $account, $language = NULL) {
  // By default, we always notify except for canceled and blocked.
  $default_notify = ($op != 'status_canceled' && $op != 'status_blocked');
  $notify = variable_get('user_mail_' . $op . '_notify', $default_notify);
  if ($notify) {
    $params['account'] = $account;
    $language = $language ? $language : user_preferred_language($account);
    $mail = drupal_mail('user', $op, $account->mail, $language, $params);
    if ($op == 'register_pending_approval') {
      // If a user registered requiring admin approval, notify the admin, too.
      // We use the site default language for this.
      drupal_mail('user', 'register_pending_approval_admin', variable_get('site_mail', ini_get('sendmail_from')), language_default(), $params);
    }
  }
  return empty($mail) ? NULL : $mail['result'];
}

/**
 * Form element process handler for client-side password validation.
 *
 * This #process handler is automatically invoked for 'password_confirm' form
 * elements to add the JavaScript and string translations for dynamic password
 * validation.
 *
 * @see system_element_info()
 */
function user_form_process_password_confirm($element) {
  global $user;

  $js_settings = array(
    'password' => array(
      'strengthTitle' => t('Password strength:'),
      'hasWeaknesses' => t('To make your password stronger:'),
      'tooShort' => t('Make it at least 6 characters'),
      'addLowerCase' => t('Add lowercase letters'),
      'addUpperCase' => t('Add uppercase letters'),
      'addNumbers' => t('Add numbers'),
      'addPunctuation' => t('Add punctuation'),
      'sameAsUsername' => t('Make it different from your username'),
      'confirmSuccess' => t('yes'),
      'confirmFailure' => t('no'),
      'weak' => t('Weak'),
      'fair' => t('Fair'),
      'good' => t('Good'),
      'strong' => t('Strong'),
      'confirmTitle' => t('Passwords match:'),
      'username' => (isset($user->name) ? $user->name : ''),
    ),
  );

  $element['#attached']['js'][] = drupal_get_path('module', 'user') . '/user.js';
  // Ensure settings are only added once per page.
  static $already_added = FALSE;
  if (!$already_added) {
    $already_added = TRUE;
    $element['#attached']['js'][] = array('data' => $js_settings, 'type' => 'setting');
  }

  return $element;
}

/**
 * Implements hook_node_load().
 */
function user_node_load($nodes, $types) {
  // Build an array of all uids for node authors, keyed by nid.
  $uids = array();
  foreach ($nodes as $nid => $node) {
    $uids[$nid] = $node->uid;
  }

  // Fetch name, picture, and data for these users.
  $user_fields = db_query("SELECT uid, name, picture, data FROM {users} WHERE uid IN (:uids)", array(':uids' => $uids))->fetchAllAssoc('uid');

  // Add these values back into the node objects.
  foreach ($uids as $nid => $uid) {
    $nodes[$nid]->name = $user_fields[$uid]->name;
    $nodes[$nid]->picture = $user_fields[$uid]->picture;
    $nodes[$nid]->data = $user_fields[$uid]->data;
  }
}

/**
 * Implements hook_image_style_delete().
 */
function user_image_style_delete($style) {
  // If a style is deleted, update the variables.
  // Administrators choose a replacement style when deleting.
  user_image_style_save($style);
}

/**
 * Implements hook_image_style_save().
 */
function user_image_style_save($style) {
  // If a style is renamed, update the variables that use it.
  if (isset($style['old_name']) && $style['old_name'] == variable_get('user_picture_style', '')) {
    variable_set('user_picture_style', $style['name']);
  }
}

/**
 * Implements hook_action_info().
 */
function user_action_info() {
  return array(
    'user_block_user_action' => array(
      'label' => t('Block current user'),
      'type' => 'user',
      'configurable' => FALSE,
      'triggers' => array('any'),
    ),
  );
}

/**
 * Blocks the current user.
 *
 * @ingroup actions
 */
function user_block_user_action(&$entity, $context = array()) {
  // First priority: If there is a $entity->uid, block that user.
  // This is most likely a user object or the author if a node or comment.
  if (isset($entity->uid)) {
    $uid = $entity->uid;
  }
  elseif (isset($context['uid'])) {
    $uid = $context['uid'];
  }
  // If neither of those are valid, then block the current user.
  else {
    $uid = $GLOBALS['user']->uid;
  }
  $account = user_load($uid);
  $account = user_save($account, array('status' => 0));
  watchdog('action', 'Blocked user %name.', array('%name' => $account->name));
}

/**
 * Implements hook_form_FORM_ID_alter().
 *
 * Add a checkbox for the 'user_register_form' instance settings on the 'Edit
 * field instance' form.
 */
function user_form_field_ui_field_edit_form_alter(&$form, &$form_state, $form_id) {
  $instance = $form['#instance'];

  if ($instance['entity_type'] == 'user') {
    $form['instance']['settings']['user_register_form'] = array(
      '#type' => 'checkbox',
      '#title' => t('Display on user registration form.'),
      '#description' => t("This is compulsory for 'required' fields."),
      // Field instances created in D7 beta releases before the setting was
      // introduced might be set as 'required' and 'not shown on user_register
      // form'. We make sure the checkbox comes as 'checked' for those.
      '#default_value' => $instance['settings']['user_register_form'] || $instance['required'],
      // Display just below the 'required' checkbox.
      '#weight' => $form['instance']['required']['#weight'] + .1,
      // Disabled when the 'required' checkbox is checked.
      '#states' => array(
        'enabled' => array('input[name="instance[required]"]' => array('checked' => FALSE)),
      ),
      // Checked when the 'required' checkbox is checked. This is done through
      // a custom behavior, since the #states system would also synchronize on
      // uncheck.
      '#attached' => array(
        'js' => array(drupal_get_path('module', 'user') . '/user.js'),
      ),
    );

    array_unshift($form['#submit'], 'user_form_field_ui_field_edit_form_submit');
  }
}

/**
 * Additional submit handler for the 'Edit field instance' form.
 *
 * Make sure the 'user_register_form' setting is set for required fields.
 */
function user_form_field_ui_field_edit_form_submit($form, &$form_state) {
  $instance = $form_state['values']['instance'];

  if (!empty($instance['required'])) {
    form_set_value($form['instance']['settings']['user_register_form'], 1, $form_state);
  }
}

/**
 * Form builder; the user registration form.
 *
 * @ingroup forms
 * @see user_account_form()
 * @see user_account_form_validate()
 * @see user_register_submit()
 */
function user_register_form($form, &$form_state) {
  global $user;

  $admin = user_access('administer users');

  // If we aren't admin but already logged on, go to the user page instead.
  if (!$admin && $user->uid) {
    drupal_goto('user/' . $user->uid);
  }

  $form['#user'] = drupal_anonymous_user();
  $form['#user_category'] = 'register';

  $form['#attached']['library'][] = array('system', 'jquery.cookie');
  $form['#attributes']['class'][] = 'user-info-from-cookie';

  // Start with the default user account fields.
  user_account_form($form, $form_state);

  // Attach field widgets, and hide the ones where the 'user_register_form'
  // setting is not on.
  field_attach_form('user', $form['#user'], $form, $form_state);
  foreach (field_info_instances('user', 'user') as $field_name => $instance) {
    if (empty($instance['settings']['user_register_form'])) {
      $form[$field_name]['#access'] = FALSE;
    }
  }

  if ($admin) {
    // Redirect back to page which initiated the create request;
    // usually admin/people/create.
    $form_state['redirect'] = $_GET['q'];
  }

  $form['actions'] = array('#type' => 'actions');
  $form['actions']['submit'] = array(
    '#type' => 'submit',
    '#value' => t('Create new account'),
  );

  $form['#validate'][] = 'user_register_validate';
  // Add the final user registration form submit handler.
  $form['#submit'][] = 'user_register_submit';

  return $form;
}

/**
 * Validation function for the user registration form.
 */
function user_register_validate($form, &$form_state) {
  entity_form_field_validate('user', $form, $form_state);
}

/**
 * Submit handler for the user registration form.
 *
 * This function is shared by the installation form and the normal registration form,
 * which is why it can't be in the user.pages.inc file.
 *
 * @see user_register_form()
 */
function user_register_submit($form, &$form_state) {
  $admin = user_access('administer users');

  if (!variable_get('user_email_verification', TRUE) || $admin) {
    $pass = $form_state['values']['pass'];
  }
  else {
    $pass = user_password();
  }
  $notify = !empty($form_state['values']['notify']);

  // Remove unneeded values.
  form_state_values_clean($form_state);

  $form_state['values']['pass'] = $pass;
  $form_state['values']['init'] = $form_state['values']['mail'];

  $account = $form['#user'];

  entity_form_submit_build_entity('user', $account, $form, $form_state);

  // Populate $edit with the properties of $account, which have been edited on
  // this form by taking over all values, which appear in the form values too.
  $edit = array_intersect_key((array) $account, $form_state['values']);
  $account = user_save($account, $edit);

  // Terminate if an error occurred during user_save().
  if (!$account) {
    drupal_set_message(t("Error saving user account."), 'error');
    $form_state['redirect'] = '';
    return;
  }
  $form_state['user'] = $account;
  $form_state['values']['uid'] = $account->uid;

  watchdog('user', 'New user: %name (%email).', array('%name' => $form_state['values']['name'], '%email' => $form_state['values']['mail']), WATCHDOG_NOTICE, l(t('edit'), 'user/' . $account->uid . '/edit'));

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    _user_mail_notify('register_pending_approval', $account);
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}

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function user_modules_installed($modules) {
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}

/**
 * Implements hook_modules_uninstalled().
 */
function user_modules_uninstalled($modules) {
   db_delete('role_permission')
     ->condition('module', $modules, 'IN')
     ->execute();
}

/**
 * Helper function to rewrite the destination to avoid redirecting to login page after login.
 *
 * Third-party authentication modules may use this function to determine the
 * proper destination after a user has been properly logged in.
 */
function user_login_destination() {
  $destination = drupal_get_destination();
  if ($destination['destination'] == 'user/login') {
    $destination['destination'] = 'user';
  }
  return $destination;
}

/**
 * Saves visitor information as a cookie so it can be reused.
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 */
function user_cookie_save(array $values) {
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    setrawcookie('Drupal.visitor.' . $field, rawurlencode($value), REQUEST_TIME + 31536000, '/');
  }
}

/**
 * Delete a visitor information cookie.
 *
 * @param $cookie_name
 *   A cookie name such as 'homepage'.
 */
function user_cookie_delete($cookie_name) {
  setrawcookie('Drupal.visitor.' . $cookie_name, '', REQUEST_TIME - 3600, '/');
}

/**
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function user_rdf_mapping() {
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}

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}

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 * user features, the inefficient data storage mechanism of Profile module, as
 * well as its lack of consistency with the rest of the entity / field based
 * systems in Drupal 7, make this a sub-optimal solution to those who were not
 * using it in previous releases of Drupal.
 *
 * To prevent new Drupal 7 sites from installing Profile module, and
 * unwittingly ending up with two completely different and incompatible methods
 * of extending users, only make the Profile module available if the profile_*
 * tables are present.
 *
 * @todo: Remove in D8, pending upgrade path.
 */
function user_system_info_alter(&$info, $file, $type) {
  if ($type == 'module' && $file->name == 'profile' && db_table_exists('profile_fi<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML+RDFa 1.0//EN" "http://www.w3.org/MarkUp/DTD/xhtml-rdfa-1.dtd">
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