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<?php
/**
* @file
* XML sitemap integration functions for xmlsitemap.module.
*/
class XMLSitemapException extends Exception {}
class XMLSitemapGenerationException extends XMLSitemapException {}
/**
* 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) {
$return = parent::openUri(drupal_realpath($uri));
if (!$return) {
throw new XMLSitemapGenerationException(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()) {
throw new XMLSitemapGenerationException(t('Unknown error occurred while writing to file @file.', array('@file' => $this->uri)));
}
//if (xmlsitemap_var('gz')) {
// $file_gz = $file . '.gz';
// file_put_contents($file_gz, gzencode(file_get_contents($file), 9));
//}
return $return;
}
}
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/config/system/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'] == 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);
}
/**
* Implements hook_query_TAG_alter().
*/
function xmlsitemap_query_xmlsitemap_link_bundle_access_alter(QueryAlterableInterface $query) {
if ($query instanceof EntityFieldQuery && $entity = $query->getMetaData('entity')) {
$info = $query->getMetaData('entity_info');
$bundle = $query->getMetaData('bundle');
if (empty($bundle)) {
$bundle = xmlsitemap_get_link_type_enabled_bundles($entity);
}
$query->entityCondition('bundle', $bundle, is_array($bundle) ? 'IN' : '=');
}
}