home | career | drupal | java | mac | mysql | perl | php | scala | uml | unix

Drupal example source code file (xmlsitemap.xmlsitemap.inc)

This example Drupal source code file (xmlsitemap.xmlsitemap.inc) is included in the DevDaily.com "Drupal Source Code Warehouse" project. The intent of this project is to help you "Learn Drupal by Example".

PHP - Drupal tags/keywords

array, content, directory, file, function, if, name, page, php, protected, public, return, sitemap, true

The xmlsitemap.xmlsitemap.inc Drupal example source code

<?php
// $Id: xmlsitemap.xmlsitemap.inc,v 1.5.2.8 2011/01/03 23:59:15 davereid Exp $

/**
 * @file
 * XML sitemap integration functions for xmlsitemap.module.
 */

/**
 * Extended class for writing XML sitemap files.
 */
class XMLSitemapWriter extends XMLWriter {
  protected $status = TRUE;
  protected $uri = NULL;
  protected $sitemapElementCount = 0;
  protected $linkCountFlush = 500;
  protected $sitemap = NULL;
  protected $sitemap_page = NULL;
  protected $rootElement = 'urlset';

  /**
   * Constructor.
   *
   * @param $sitemap
   *   The sitemap array.
   * @param $page
   *   The current page of the sitemap being generated.
   */
  function __construct(stdClass &$sitemap, $page) {
    $this->sitemap = $sitemap;
    $this->sitemap_page = $page;
    $this->uri = xmlsitemap_sitemap_get_file($sitemap, $page);
    $this->openUri($this->uri);
  }

  public function openUri($uri) {
    $return = parent::openUri($uri);
    if (!$return) {
      trigger_error(t('Could not open file @file for writing.', array('@file' => $uri)));
    }
    return $return;
  }

  public function startDocument($version = '1.0', $encoding = 'UTF-8', $standalone = NULL) {
    $this->setIndent(FALSE);
    parent::startDocument($version, $encoding);
    if (variable_get('xmlsitemap_xsl', 1)) {
      $this->writeXSL();
    }
    $this->startElement($this->rootElement, TRUE);
  }

  /**
   * Add the XML stylesheet to the XML page.
   */
  public function writeXSL() {
    $this->writePi('xml-stylesheet', 'type="text/xsl" href="' . url('sitemap.xsl') . '"');
    $this->writeRaw(PHP_EOL);
  }

  /**
   * Return an array of attributes for the root element of the XML.
   */
  public function getRootAttributes() {
    $attributes['xmlns'] = 'http://www.sitemaps.org/schemas/sitemap/0.9';
    if (variable_get('xmlsitemap_developer_mode', 0)) {
      $attributes['xmlns:xsi'] = 'http://www.w3.org/2001/XMLSchema-instance';
      $attributes['xsi:schemaLocation'] = 'http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd';
    }
    return $attributes;
  }

  public function generateXML() {
    return xmlsitemap_generate_chunk($this->sitemap, $this, $this->sitemap_page);
  }

  public function startElement($name, $root = FALSE) {
    parent::startElement($name);

    if ($root) {
      foreach ($this->getRootAttributes() as $name => $value) {
        $this->writeAttribute($name, $value);
      }
      $this->writeRaw(PHP_EOL);
    }
  }

  /**
   * Write an full XML sitemap element tag.
   *
   * @param $name
   *   The element name.
   * @param $element
   *   An array of the elements properties and values.
   */
  public function writeSitemapElement($name, array &$element) {
    $this->writeElement($name, $element);
    $this->writeRaw(PHP_EOL);

    // After a certain number of elements have been added, flush the buffer
    // to the output file.
    $this->sitemapElementCount++;
    if (($this->sitemapElementCount % $this->linkCountFlush) == 0) {
      $this->flush();
    }
  }

  /**
   * Write full element tag including support for nested elements.
   *
   * @param $name
   *   The element name.
   * @param $content
   *   The element contents or an array of the elements' sub-elements.
   */
  public function writeElement($name, $content = '') {
    if (is_array($content)) {
      $this->startElement($name);
      foreach ($content as $sub_name => $sub_content) {
        $this->writeElement($sub_name, $sub_content);
      }
      $this->endElement();
    }
    else {
      parent::writeElement($name, $content);
    }
  }

  /**
   * Override of XMLWriter::flush() to track file writing status.
   */
  public function flush($empty = TRUE) {
    $return = parent::flush($empty);
    $this->status &= (bool) $return;
    return $return;
  }

  public function getStatus() {
    return $this->status;
  }

  public function getURI() {
    return $this->uri;
  }

  public function getSitemapElementCount() {
    return $this->sitemapElementCount;
  }

  public function endDocument() {
    $return = parent::endDocument();

    if (!$this->getStatus()) {
      trigger_error(t('Unknown error occurred while writing to file @file.', array('@file' => $this->uri)));
      return FALSE;
    }

    //if (xmlsitemap_var('gz')) {
    //  $file_gz = $file . '.gz';
    //  file_put_contents($file_gz, gzencode(file_get_contents($file), 9));
    //}

    return $return;
  }

  /**
   * Explicitly define the writeRaw() function since it is not available
   * before PHP 5.2.
   */
  public function writeRaw($content) {
    static $writeraw_parent;

    if (!isset($writeraw_parent)) {
      $writeraw_parent = method_exists('XMLWriter', 'writeRaw');
    }

    return $writeraw_parent ? parent::writeRaw($content) : parent::text($content);
  }
}

class XMLSitemapIndexWriter extends XMLSitemapWriter {
  protected $rootElement = 'sitemapindex';

  function __construct(stdClass &$sitemap, $page = 'index') {
    parent::__construct($sitemap, 'index');
  }

  public function getRootAttributes() {
    $attributes['xmlns'] = 'http://www.sitemaps.org/schemas/sitemap/0.9';
    if (variable_get('xmlsitemap_developer_mode', 0)) {
      $attributes['xmlns:xsi'] = 'http://www.w3.org/2001/XMLSchema-instance';
      $attributes['xsi:schemaLocation'] = 'http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/siteindex.xsd';
    }
    return $attributes;
  }

  public function generateXML() {
    $lastmod_format = variable_get('xmlsitemap_lastmod_format', XMLSITEMAP_LASTMOD_MEDIUM);

    $url_options = $this->sitemap->uri['options'];
    $url_options += array(
      'absolute' => TRUE,
      'base_url' => variable_get('xmlsitemap_base_url', $GLOBALS['base_url']),
      'language' => language_default(),
      'alias' => TRUE,
    );

    for ($i = 1; $i <= $this->sitemap->chunks; $i++) {
      $url_options['query']['page'] = $i;
      $element = array(
        'loc' => url('sitemap.xml', $url_options),
        // @todo Use the actual lastmod value of the chunk file.
        'lastmod' => gmdate($lastmod_format, REQUEST_TIME),
      );
      $this->writeSitemapElement('sitemap', $element);
    }
  }
}

/**
 * Implements hook_xmlsitemap_link_info().
 */
function xmlsitemap_xmlsitemap_link_info() {
  return array(
    'frontpage' => array(
      'label' => t('Frontpage'),
      'xmlsitemap' => array(
        'settings callback' => 'xmlsitemap_link_frontpage_settings',
      ),
    ),
  );
}

/**
 * XML sitemap link type settings callback for frontpage link entity.
 */
function xmlsitemap_link_frontpage_settings(&$form) {
  module_load_include('admin.inc', 'xmlsitemap');
  if (user_access('administer site configuration')) {
    $form['#description'] = t('The front page path can be changed in the <a href="@url-frontpage">site information configuration</a>.', array('@url-frontpage' => url('admin/settings/site-information')));
  }
  $form['xmlsitemap_frontpage_priority'] = array(
    '#type' => 'select',
    '#title' => t('Priority'),
    '#options' => xmlsitemap_get_priority_options(),
    '#default_value' => variable_get('xmlsitemap_frontpage_priority', 1.0),
  );
  $form['xmlsitemap_frontpage_changefreq'] = array(
    '#type' => 'select',
    '#title' => t('Change frequency'),
    '#options' => xmlsitemap_get_changefreq_options(),
    '#default_value' => variable_get('xmlsitemap_frontpage_changefreq', XMLSITEMAP_FREQUENCY_DAILY),
  );
  return $form;
}

/**
 * Implements hook_xmlsitemap_link_alter().
 */
function xmlsitemap_xmlsitemap_link_alter(&$link) {
  // Alter the frontpage priority.
  if ($link['type'] == 'frontpage' || $link['loc'] == '' || $link['loc'] == drupal_get_normal_path(variable_get('site_frontpage', 'node'))) {
    $link['priority'] = variable_get('xmlsitemap_frontpage_priority', 1.0);
    $link['changefreq'] = variable_get('xmlsitemap_frontpage_changefreq', XMLSITEMAP_FREQUENCY_DAILY);
  }
}

/**
 * Implements hook_xmlsitemap_links().
 */
function xmlsitemap_xmlsitemap_links() {
  // Frontpage link.
  $links[] = array(
    'type' => 'frontpage',
    'id' => 0,
    'loc' => '',
  );
  return $links;
}

/**
 * Implements hook_xmlsitemap_sitemap_operations().
 */
function xmlsitemap_xmlsitemap_sitemap_operations() {
  $operations['update'] = array(
    'label' => t('Update cached files'),
    'action past' => t('Updated'),
    'callback' => 'xmlsitemap_sitemap_multiple_update',
  );
  return $operations;
}

/**
 * XML sitemap operation callback; regenerate sitemap files using the batch API.
 *
 * @param $smids
 *   An array of XML sitemap IDs.
 *
 * @see xmlsitemap_regenerate_batch()
 */
function xmlsitemap_sitemap_multiple_update(array $smids) {
  module_load_include('generate.inc', 'xmlsitemap');
  $batch = xmlsitemap_regenerate_batch($smids);
  batch_set($batch);
}

Other Drupal examples (source code examples)

Here is a short list of links related to this Drupal xmlsitemap.xmlsitemap.inc source code file:

new blog posts

"Drupal" is a registered trademark of Dries Buytaert.

my drupal tutorials and examples  

Copyright 1998-2016 Alvin Alexander, alvinalexander.com
All Rights Reserved.

Beginning in 2016, a portion of the proceeds from pages under the '/drupal-code-examples/' URI will be donated to charity.