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<?php
/**
* Sitemaps (per the protocol) are essentially lists of XML fragments;
* lists which are subject to size constraints. The Jetpack_Sitemap_Buffer_Image
* extends the Jetpack_Sitemap_Buffer class to represent the single image sitemap
* buffer.
*
* @since 5.3.0
* @package Jetpack
*/
/**
* A buffer for constructing sitemap image xml files.
*
* @since 5.3.0
*/
class Jetpack_Sitemap_Buffer_Image extends Jetpack_Sitemap_Buffer {
public function __construct( $item_limit, $byte_limit, $time = '1970-01-01 00:00:00' ) {
parent::__construct( $item_limit, $byte_limit, $time );
$this->doc->appendChild(
$this->doc->createComment( "generator='jetpack-" . JETPACK__VERSION . "'" )
);
$this->doc->appendChild(
$this->doc->createProcessingInstruction(
'xml-stylesheet',
'type="text/xsl" href="' . $this->finder->construct_sitemap_url( 'image-sitemap.xsl' ) . '"'
)
);
}
protected function get_root_element() {
if ( ! isset( $this->root ) ) {
/**
* Filter the XML namespaces included in image sitemaps.
*
* @module sitemaps
*
* @since 4.8.0
*
* @param array $namespaces Associative array with namespaces and namespace URIs.
*/
$namespaces = apply_filters(
'jetpack_sitemap_image_ns',
array(
'xmlns:xsi' => 'http://www.w3.org/2001/XMLSchema-instance',
'xsi:schemaLocation' => 'http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd',
'xmlns' => 'http://www.sitemaps.org/schemas/sitemap/0.9',
'xmlns:image' => 'http://www.google.com/schemas/sitemap-image/1.1',
)
);
$this->root = $this->doc->createElement( 'urlset' );
foreach ( $namespaces as $name => $value ) {
$this->root->setAttribute( $name, $value );
}
$this->doc->appendChild( $this->root );
$this->byte_capacity -= strlen( $this->doc->saveXML( $this->root ) );
}
return $this->root;
}
}
|
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