/**
* Add child tag
*
* Both single tags and compound tags can be added, to allow a nested structure.
*
* @param BWP_Sitemaps_Sitemap_Tag $tag the child tag to add
* @throws LogicException if child tag already has a parent
* @return $this
*/
public function add_tag(BWP_Sitemaps_Sitemap_Tag $tag)
{
if ($tag->parent instanceof BWP_Sitemaps_Sitemap_Tag) {
throw new LogicException('child tag already has a parent');
}
$tag->set_parent($this);
// duplicate tag detected
if (in_array($tag, $this->tags)) {
return $this;
}
$this->tags[] = $tag;
return $this;
}
/**
* {@inheritDoc}
*/
protected function get_xml_item_body(array $item)
{
$sitemap = BWP_Sitemaps_Sitemap_Tag::create_compound_tag('sitemap');
$sitemap->add_tag(BWP_Sitemaps_Sitemap_Tag::create_single_tag('loc', $item['location']));
if (!empty($item['lastmod'])) {
$sitemap->add_tag(BWP_Sitemaps_Sitemap_Tag::create_single_tag('lastmod', $item['lastmod']));
}
return $sitemap->get_xml();
}
/**
* Create an image tag from image item
*
* @param array $item
* @return mixed BWP_Sitemaps_Sitemap_Tag_CompoundTag|null
*/
protected function create_image_tag_from_sitemap_item(array $item)
{
if (!$this->provider->is_image_allowed() || !isset($item['image']) || !is_array($item['image'])) {
return;
}
$image = $item['image'];
// not valid location for image
if (empty($image['location'])) {
return;
}
$tags = $this->create_tags_from_sitemap_item($image, array('image:loc' => 'location', 'image:title' => 'title', 'image:caption' => 'caption'));
$image_tag = BWP_Sitemaps_Sitemap_Tag::create_compound_tag('image:image')->add_tags($tags);
return $image_tag;
}
/**
* {@inheritDoc}
*/
protected function get_xml_item_body(array $item)
{
// allow overriding publication name via item data
$item['name'] = !empty($item['name']) ? $item['name'] : $this->news_name;
$url = BWP_Sitemaps_Sitemap_Tag::create_compound_tag('url');
$location = BWP_Sitemaps_Sitemap_Tag::create_single_tag('loc', $item['location']);
$news = BWP_Sitemaps_Sitemap_Tag::create_compound_tag('news:news');
$news_publication = BWP_Sitemaps_Sitemap_Tag::create_compound_tag('news:publication');
$news_publication_tags = $this->create_tags_from_sitemap_item($item, array('news:name' => 'name', 'news:language' => 'language'));
$news_tags = $this->create_tags_from_sitemap_item($item, array('news:genres' => 'genres', 'news:publication_date' => 'pub_date', 'news:title' => 'title', 'news:keywords' => 'keywords'));
$url->add_tags(array($location, $news->add_tag($news_publication->add_tags($news_publication_tags))->add_tags($news_tags)));
if ($image = $this->create_image_tag_from_sitemap_item($item)) {
$url->add_tag($image);
}
return $url->get_xml();
}
