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<?php // phpcs:ignore WordPress.Files.FileName.InvalidClassFileName
/**
* XMLWriter implementation of the image sitemap buffer.
*
* @since 14.6
* @package automattic/jetpack
*/
/**
* A buffer for constructing sitemap image xml files using XMLWriter.
*
* @since 14.6
*/
class Jetpack_Sitemap_Buffer_Image_XMLWriter extends Jetpack_Sitemap_Buffer_XMLWriter {
/**
* Initialize the buffer with required headers and root element.
*/
protected function initialize_buffer() {
// Add generator comment
$this->writer->writeComment( "generator='jetpack-" . JETPACK__VERSION . "'" );
$this->writer->writeComment( 'Jetpack_Sitemap_Buffer_Image_XMLWriter' );
// Add stylesheet
$this->writer->writePi(
'xml-stylesheet',
'type="text/xsl" href="' . $this->finder->construct_sitemap_url( 'image-sitemap.xsl' ) . '"'
);
// Start root element with namespaces
$this->writer->startElement( 'urlset' );
/**
* 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',
)
);
foreach ( $namespaces as $name => $value ) {
$this->writer->writeAttribute( $name, $value );
}
}
/**
* Append a URL entry with image information to the sitemap.
*
* @param array $array The URL item to append.
*/
protected function append_item( $array ) {
if ( ! isset( $array['url'] ) || ! is_array( $array['url'] ) ) {
return;
}
$url = $array['url'];
$this->writer->startElement( 'url' );
if ( isset( $url['loc'] ) ) {
$this->writer->writeElement( 'loc', esc_url( $url['loc'] ) );
}
if ( isset( $url['lastmod'] ) ) {
$this->writer->writeElement( 'lastmod', esc_html( $url['lastmod'] ) );
}
if ( isset( $url['image:image'] ) && is_array( $url['image:image'] ) ) {
$this->writer->startElement( 'image:image' );
// Required image loc
if ( isset( $url['image:image']['image:loc'] ) ) {
$this->writer->writeElement( 'image:loc', esc_url( $url['image:image']['image:loc'] ) );
}
// Optional image title
if ( ! empty( $url['image:image']['image:title'] ) ) {
$this->writer->writeElement( 'image:title', esc_html( $url['image:image']['image:title'] ) );
}
// Optional image caption
if ( ! empty( $url['image:image']['image:caption'] ) ) {
$this->writer->writeElement( 'image:caption', esc_html( $url['image:image']['image:caption'] ) );
}
$this->writer->endElement(); // image:image
}
$this->writer->endElement(); // url
}
}