+global\Jetpack_Sitemap_Builder::build_one_sitemap_index()

Complexity

Conditions	8
Paths	16

Size

Total Lines	105
Code Lines	55

Duplication

Lines	0
Ratio	0 %

Importance

Changes

0

<?php
	private function build_one_sitemap_index( $number, $from_id, $datetime, $index_type ) {
		$last_sitemap_id   = $from_id;
		$any_sitemaps_left = true;

		// Check the datetime format.
		$datetime = jp_sitemap_datetime( $datetime );

		$sitemap_type = jp_sitemap_child_type_of( $index_type );

		if ( $this->logger ) {
			$index_debug_name = jp_sitemap_filename( $index_type, $number );
			$this->logger->report( "-- Building $index_debug_name" );
		}

		$sitemap_index_xsl_url = $this->finder->construct_sitemap_url( 'sitemap-index.xsl' );

		$jetpack_version = JETPACK__VERSION;

		$buffer = new Jetpack_Sitemap_Buffer(
			JP_SITEMAP_MAX_ITEMS,
			JP_SITEMAP_MAX_BYTES,
			<<<HEADER
<?xml version='1.0' encoding='UTF-8'?>
<!-- generator='jetpack-{$jetpack_version}' -->
<?xml-stylesheet type='text/xsl' href='{$sitemap_index_xsl_url}'?>
<sitemapindex xmlns='http://www.sitemaps.org/schemas/sitemap/0.9'>\n
HEADER
			,
			<<<FOOTER
</sitemapindex>\n
FOOTER
			,
			/* initial last_modified value */
			$datetime
		);

		// Add pointer to the previous sitemap index (unless we're at the first one).
		if ( 1 !== $number ) {
			$i = $number - 1;
			$prev_index_url = $this->finder->construct_sitemap_url(
				jp_sitemap_filename( $index_type, $i )
			);

			$item_array = array(
				'sitemap' => array(
					'loc'     => $prev_index_url,
					'lastmod' => $datetime,
				),
			);

			$buffer->try_to_add_item( Jetpack_Sitemap_Buffer::array_to_xml_string( $item_array ) );
		}

		// Add as many items to the buffer as possible.
		while ( false === $buffer->is_full() ) {
			// Retrieve a batch of posts (in order).
			$posts = $this->librarian->query_sitemaps_after_id(
				$sitemap_type, $last_sitemap_id, JP_SITEMAP_BATCH_SIZE
			);

			// If there were no posts to get, make a note.
			if ( null == $posts ) { // WPCS: loose comparison ok.
				$any_sitemaps_left = false;
				break;
			}

			// Otherwise, loop through each post in the batch.
			foreach ( $posts as $post ) {
				// Generate the sitemap XML for the post.
				$current_item = $this->sitemap_row_to_index_item( $post );

				// Try adding this item to the buffer.
				if ( true === $buffer->try_to_add_item( $current_item['xml'] ) ) {
					$last_sitemap_id = $post['ID'];
					$buffer->view_time( $current_item['last_modified'] );
				} else {
					// Otherwise stop looping through posts.
					break;
				}
			}
		}

		// If no items were added, return false.
		if ( true === $buffer->is_empty() ) {
			return false;
		}

		$this->librarian->store_sitemap_data(
			$number,
			$index_type,
			$buffer->contents(),
			$buffer->last_modified()
		);

		/*
		 * Now report back with the ID of the last sitemap post ID to
		 * be successfully added, whether there are any sitemap posts
		 * left, and the most recent modification time seen.
		 */
		return array(
			'last_id'       => $last_sitemap_id,
			'any_left'      => $any_sitemaps_left,
			'last_modified' => $buffer->last_modified(),
		);
	}