sdcate.module

<?php
/**
 * @file
 * Simple DCAT export module.
 */

/**
 * Implements hook_permission().
 */
function sdcate_permission() {
  return array(
    'administer sdcate' => array(
      'title' => t('Administer DCAT'),
      'description' => t('Administer export of metadata to machine-readable DCAT file'),
    ),
  );
}

/**
 * Implements hook_help().
 */
function sdcate_help($path, $arg) {
  switch ($path) {
    case 'admin/help#sdcate':
      $output = '';
      $output .= '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('The Simple DCAT export module generates a file containing metadata (title, link, description ...) of downloadable, machine-readable files. This makes it easier for Drupal site owners to provide input for open data initiatives / portals.') . '</p>';
      $output .= '<p>' . t('For more information about the metadata format, see W3C\'s Data Catalog Vocabulary <a href="@spec">specification</a> or the European <a href="@dcatap">DCAT-AP project</a>.', array('@spec' => 'http://www.w3.org/TR/vocab-dcat/', '@dcatap' => 'https://joinup.ec.europa.eu/asset/dcat_application_profile/description')) . '</p>';
      $output .= '<h3>' . t('Uses') . '</h3>';
      $output .= '<dl>';
      $output .= '<dt>' . t('Configuring settings') . '</dt>';
      $output .= '<dd>' . t('Users with the <em>Admin DCAT</em> permission can configure the module via the Variable\'s <a href="@cfg">Simple DCAT menu</a>.', array('@cfg' => url('admin/config/search/sdcate'))) . '</dd>';
      $output .= '</dl>';

      return $output;
  }
}

/**
 * Implements hook_menu().
 */
function sdcate_menu() {
  $items = array();

  $items['admin/config/search/sdcate'] = array(
    'title' => 'Simple DCAT export',
    'description' => 'Configure exporting metadata of downloadable files to machine-readable DCAT file.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('variable_module_form', 'sdcate'),
    'access arguments' => array('administer dcat'),
    'type' => MENU_NORMAL_ITEM,
  );

  return $items;
}

/**
 * Implements hook_cron().
 */
function sdcate_cron() {
  module_load_include('inc', 'sdcate', 'sdcate');
  
  $data = sdcate_catalog();
  $data .= sdcate_datasets();

  $fname = 'public://' . variable_get_value('sdcate_outfile');
  file_save_data($data, $fname, FILE_EXISTS_REPLACE);
  watchdog('sdcate', 'Generated DCAT file %f', array('%f' => $fname));
}