<?php

/**

 * @file

 * User page callbacks for the search module.

 */

/**

 * Menu callback; presents the search form and/or search results.

 *

 * @param $module

 *   Search module to use for the search.

 * @param $keys

 *   Keywords to use for the search.

 */

function search_view($module = NULL, $keys = '') {

  $info = FALSE;

  $keys = trim($keys);

  // Also try to pull search keywords out of the $_REQUEST variable to

  // support old GET format of searches for existing links.

  if (!$keys && !empty($_REQUEST['keys'])) {

    $keys = trim($_REQUEST['keys']);

  }

  if (!empty($module)) {

    $active_module_info = search_get_info();

    if (isset($active_module_info[$module])) {

      $info = $active_module_info[$module];

    }

  }

  if (empty($info)) {

    // No path or invalid path: find the default module. Note that if there

    // are no enabled search modules, this function should never be called,

    // since hook_menu() would not have defined any search paths.

    $info = search_get_default_module_info();

    // Redirect from bare /search or an invalid path to the default search path.

    $path = 'search/' . $info['path'];

    if ($keys) {

      $path .= '/' . $keys;

    }

    drupal_goto($path);

  }

  // Default results output is an empty string.

  $results = array('#markup' => '');

  // Process the search form. Note that if there is $_POST data,

  // search_form_submit() will cause a redirect to search/[module path]/[keys],

  // which will get us back to this page callback. In other words, the search

  // form submits with POST but redirects to GET. This way we can keep

  // the search query URL clean as a whistle.

  if (empty($_POST['form_id']) || ($_POST['form_id'] != 'search_form' && $_POST['form_id'] != 'search_block_form')) {

    $conditions =  NULL;

    if (isset($info['conditions_callback']) && function_exists($info['conditions_callback'])) {

      // Build an optional array of more search conditions.

      $conditions = call_user_func($info['conditions_callback'], $keys);

    }

    // Only search if there are keywords or non-empty conditions.

    if ($keys || !empty($conditions)) {

       if (variable_get('search_logging', TRUE)) {

         // Log the search keys.

         watchdog('search', 'Searched %type for %keys.', array('%keys' => $keys, '%type' => $info['title']), WATCHDOG_NOTICE, l(t('results'), 'search/' . $info['path'] . '/' . $keys));

       }

      // Collect the search results.

      $results = search_data($keys, $info['module'], $conditions);

    }

  }

  // The form may be altered based on whether the search was run.

  $build['search_form'] = drupal_get_form('search_form', NULL, $keys, $info['module']);

  $build['search_results'] = $results;

  return $build;

}

/**

 * Process variables for search-results.tpl.php.

 *

 * The $variables array contains the following arguments:

 * - $results: Search results array.

 * - $module: Module the search results came from (module implementing

 *   hook_search_info()).

 *

 * @see search-results.tpl.php

 */

function template_preprocess_search_results(&$variables) {

  $variables['search_results'] = '';

  if (!empty($variables['module'])) {

    $variables['module'] = check_plain($variables['module']);

  }

  foreach ($variables['results'] as $result) {

    $variables['search_results'] .= theme('search_result', array('result' => $result, 'module' => $variables['module']));

  }

  $variables['pager'] = theme('pager', array('tags' => NULL));

  $variables['theme_hook_suggestions'][] = 'search_results__' . $variables['module'];

}

/**

 * Process variables for search-result.tpl.php.

 *

 * The $variables array contains the following arguments:

 * - $result

 * - $module

 *

 * @see search-result.tpl.php

 */

function template_preprocess_search_result(&$variables) {

  global $language;

  $result = $variables['result'];

  $variables['url'] = check_url($result['link']);

  $variables['title'] = check_plain($result['title']);

  if (isset($result['language']) && $result['language'] != $language->language && $result['language'] != LANGUAGE_NONE) {

    $variables['title_attributes_array']['xml:lang'] = $result['language'];

    $variables['content_attributes_array']['xml:lang'] = $result['language'];

  }

  $info = array();

  if (!empty($result['module'])) {

    $info['module'] = check_plain($result['module']);

  }

  if (!empty($result['user'])) {

    $info['user'] = $result['user'];

  }

  if (!empty($result['date'])) {

    $info['date'] = format_date($result['date'], 'short');

  }

  if (isset($result['extra']) && is_array($result['extra'])) {

    $info = array_merge($info, $result['extra']);

  }

  // Check for existence. User search does not include snippets.

  $variables['snippet'] = isset($result['snippet']) ? $result['snippet'] : '';

  // Provide separated and grouped meta information..

  $variables['info_split'] = $info;

  $variables['info'] = implode(' - ', $info);

  $variables['theme_hook_suggestions'][] = 'search_result__' . $variables['module'];

}

/**

 * As the search form collates keys from other modules hooked in via

 * hook_form_alter, the validation takes place in _submit.

 * search_form_validate() is used solely to set the 'processed_keys' form

 * value for the basic search form.

 */

function search_form_validate($form, &$form_state) {

  form_set_value($form['basic']['processed_keys'], trim($form_state['values']['keys']), $form_state);

}

/**

 * Process a search form submission.

 */

function search_form_submit($form, &$form_state) {

  $keys = $form_state['values']['processed_keys'];

  if ($keys == '') {

    form_set_error('keys', t('Please enter some keywords.'));

    // Fall through to the form redirect.

  }

  $form_state['redirect'] = $form_state['action'] . '/' . $keys;

}