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| /** | |
| * Sitemaps: WP_Sitemaps_Stylesheet class | |
| * | |
| * This class provides the XSL stylesheets to style all sitemaps. | |
| * | |
| * @package WordPress | |
| * @subpackage Sitemaps | |
| * @since 5.5.0 | |
| */ | |
| /** | |
| * Stylesheet provider class. | |
| * | |
| * @since 5.5.0 | |
| */ | |
| class WP_Sitemaps_Stylesheet { | |
| /** | |
| * Renders the XSL stylesheet depending on whether it's the sitemap index or not. | |
| * | |
| * @param string $type Stylesheet type. Either 'sitemap' or 'index'. | |
| */ | |
| public function render_stylesheet( $type ) { | |
| header( 'Content-Type: application/xml; charset=UTF-8' ); | |
| if ( 'sitemap' === $type ) { | |
| // All content is escaped below. | |
| echo $this->get_sitemap_stylesheet(); | |
| } | |
| if ( 'index' === $type ) { | |
| // All content is escaped below. | |
| echo $this->get_sitemap_index_stylesheet(); | |
| } | |
| exit; | |
| } | |
| /** | |
| * Returns the escaped XSL for all sitemaps, except index. | |
| * | |
| * @since 5.5.0 | |
| */ | |
| public function get_sitemap_stylesheet() { | |
| $css = $this->get_stylesheet_css(); | |
| $title = esc_xml( __( 'XML Sitemap' ) ); | |
| $description = esc_xml( __( 'This XML Sitemap is generated by WordPress to make your content more visible for search engines.' ) ); | |
| $learn_more = sprintf( | |
| '<a href="%s">%s</a>', | |
| esc_url( __( 'https://www.sitemaps.org/' ) ), | |
| esc_xml( __( 'Learn more about XML sitemaps.' ) ) | |
| ); | |
| $text = sprintf( | |
| /* translators: %s: Number of URLs. */ | |
| esc_xml( __( 'Number of URLs in this XML Sitemap: %s.' ) ), | |
| '<xsl:value-of select="count( sitemap:urlset/sitemap:url )" />' | |
| ); | |
| $lang = get_language_attributes( 'html' ); | |
| $url = esc_xml( __( 'URL' ) ); | |
| $lastmod = esc_xml( __( 'Last Modified' ) ); | |
| $changefreq = esc_xml( __( 'Change Frequency' ) ); | |
| $priority = esc_xml( __( 'Priority' ) ); | |
| $xsl_content = <<<XSL | |
| <?xml version="1.0" encoding="UTF-8"?> | |
| <xsl:stylesheet | |
| version="1.0" | |
| xmlns:xsl="http://www.w3.org/1999/XSL/Transform" | |
| xmlns:sitemap="http://www.sitemaps.org/schemas/sitemap/0.9" | |
| exclude-result-prefixes="sitemap" | |
| > | |
| <xsl:output method="html" encoding="UTF-8" indent="yes" /> | |
| <!-- | |
| Set variables for whether lastmod, changefreq or priority occur for any url in the sitemap. | |
| We do this up front because it can be expensive in a large sitemap. | |
| --> | |
| <xsl:variable name="has-lastmod" select="count( /sitemap:urlset/sitemap:url/sitemap:lastmod )" /> | |
| <xsl:variable name="has-changefreq" select="count( /sitemap:urlset/sitemap:url/sitemap:changefreq )" /> | |
| <xsl:variable name="has-priority" select="count( /sitemap:urlset/sitemap:url/sitemap:priority )" /> | |
| <xsl:template match="/"> | |
| <html {$lang}> | |
| <head> | |
| <title>{$title}</title> | |
| <style> | |
| {$css} | |
| </style> | |
| </head> | |
| <body> | |
| <div id="sitemap"> | |
| <div id="sitemap__header"> | |
| <h1>{$title}</h1> | |
| <p>{$description}</p> | |
| <p>{$learn_more}</p> | |
| </div> | |
| <div id="sitemap__content"> | |
| <p class="text">{$text}</p> | |
| <table id="sitemap__table"> | |
| <thead> | |
| <tr> | |
| <th class="loc">{$url}</th> | |
| <xsl:if test="\$has-lastmod"> | |
| <th class="lastmod">{$lastmod}</th> | |
| </xsl:if> | |
| <xsl:if test="\$has-changefreq"> | |
| <th class="changefreq">{$changefreq}</th> | |
| </xsl:if> | |
| <xsl:if test="\$has-priority"> | |
| <th class="priority">{$priority}</th> | |
| </xsl:if> | |
| </tr> | |
| </thead> | |
| <tbody> | |
| <xsl:for-each select="sitemap:urlset/sitemap:url"> | |
| <tr> | |
| <td class="loc"><a href="{sitemap:loc}"><xsl:value-of select="sitemap:loc" /></a></td> | |
| <xsl:if test="\$has-lastmod"> | |
| <td class="lastmod"><xsl:value-of select="sitemap:lastmod" /></td> | |
| </xsl:if> | |
| <xsl:if test="\$has-changefreq"> | |
| <td class="changefreq"><xsl:value-of select="sitemap:changefreq" /></td> | |
| </xsl:if> | |
| <xsl:if test="\$has-priority"> | |
| <td class="priority"><xsl:value-of select="sitemap:priority" /></td> | |
| </xsl:if> | |
| </tr> | |
| </xsl:for-each> | |
| </tbody> | |
| </table> | |
| </div> | |
| </div> | |
| </body> | |
| </html> | |
| </xsl:template> | |
| </xsl:stylesheet> | |
| XSL; | |
| /** | |
| * Filters the content of the sitemap stylesheet. | |
| * | |
| * @since 5.5.0 | |
| * | |
| * @param string $xsl_content Full content for the XML stylesheet. | |
| */ | |
| return apply_filters( 'wp_sitemaps_stylesheet_content', $xsl_content ); | |
| } | |
| /** | |
| * Returns the escaped XSL for the index sitemaps. | |
| * | |
| * @since 5.5.0 | |
| */ | |
| public function get_sitemap_index_stylesheet() { | |
| $css = $this->get_stylesheet_css(); | |
| $title = esc_xml( __( 'XML Sitemap' ) ); | |
| $description = esc_xml( __( 'This XML Sitemap is generated by WordPress to make your content more visible for search engines.' ) ); | |
| $learn_more = sprintf( | |
| '<a href="%s">%s</a>', | |
| esc_url( __( 'https://www.sitemaps.org/' ) ), | |
| esc_xml( __( 'Learn more about XML sitemaps.' ) ) | |
| ); | |
| $text = sprintf( | |
| /* translators: %s: Number of URLs. */ | |
| esc_xml( __( 'Number of URLs in this XML Sitemap: %s.' ) ), | |
| '<xsl:value-of select="count( sitemap:sitemapindex/sitemap:sitemap )" />' | |
| ); | |
| $lang = get_language_attributes( 'html' ); | |
| $url = esc_xml( __( 'URL' ) ); | |
| $lastmod = esc_xml( __( 'Last Modified' ) ); | |
| $xsl_content = <<<XSL | |
| <?xml version="1.0" encoding="UTF-8"?> | |
| <xsl:stylesheet | |
| version="1.0" | |
| xmlns:xsl="http://www.w3.org/1999/XSL/Transform" | |
| xmlns:sitemap="http://www.sitemaps.org/schemas/sitemap/0.9" | |
| exclude-result-prefixes="sitemap" | |
| > | |
| <xsl:output method="html" encoding="UTF-8" indent="yes" /> | |
| <!-- | |
| Set variables for whether lastmod occurs for any sitemap in the index. | |
| We do this up front because it can be expensive in a large sitemap. | |
| --> | |
| <xsl:variable name="has-lastmod" select="count( /sitemap:sitemapindex/sitemap:sitemap/sitemap:lastmod )" /> | |
| <xsl:template match="/"> | |
| <html {$lang}> | |
| <head> | |
| <title>{$title}</title> | |
| <style> | |
| {$css} | |
| </style> | |
| </head> | |
| <body> | |
| <div id="sitemap"> | |
| <div id="sitemap__header"> | |
| <h1>{$title}</h1> | |
| <p>{$description}</p> | |
| <p>{$learn_more}</p> | |
| </div> | |
| <div id="sitemap__content"> | |
| <p class="text">{$text}</p> | |
| <table id="sitemap__table"> | |
| <thead> | |
| <tr> | |
| <th class="loc">{$url}</th> | |
| <xsl:if test="\$has-lastmod"> | |
| <th class="lastmod">{$lastmod}</th> | |
| </xsl:if> | |
| </tr> | |
| </thead> | |
| <tbody> | |
| <xsl:for-each select="sitemap:sitemapindex/sitemap:sitemap"> | |
| <tr> | |
| <td class="loc"><a href="{sitemap:loc}"><xsl:value-of select="sitemap:loc" /></a></td> | |
| <xsl:if test="\$has-lastmod"> | |
| <td class="lastmod"><xsl:value-of select="sitemap:lastmod" /></td> | |
| </xsl:if> | |
| </tr> | |
| </xsl:for-each> | |
| </tbody> | |
| </table> | |
| </div> | |
| </div> | |
| </body> | |
| </html> | |
| </xsl:template> | |
| </xsl:stylesheet> | |
| XSL; | |
| /** | |
| * Filters the content of the sitemap index stylesheet. | |
| * | |
| * @since 5.5.0 | |
| * | |
| * @param string $xsl_content Full content for the XML stylesheet. | |
| */ | |
| return apply_filters( 'wp_sitemaps_stylesheet_index_content', $xsl_content ); | |
| } | |
| /** | |
| * Gets the CSS to be included in sitemap XSL stylesheets. | |
| * | |
| * @since 5.5.0 | |
| * | |
| * @return string The CSS. | |
| */ | |
| public function get_stylesheet_css() { | |
| $text_align = is_rtl() ? 'right' : 'left'; | |
| $css = <<<EOF | |
| body { | |
| font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif; | |
| color: #444; | |
| } | |
| #sitemap { | |
| max-width: 980px; | |
| margin: 0 auto; | |
| } | |
| #sitemap__table { | |
| width: 100%; | |
| border: solid 1px #ccc; | |
| border-collapse: collapse; | |
| } | |
| #sitemap__table tr td.loc { | |
| /* | |
| * URLs should always be LTR. | |
| * See https://core.trac.wordpress.org/ticket/16834 | |
| * and https://core.trac.wordpress.org/ticket/49949 | |
| */ | |
| direction: ltr; | |
| } | |
| #sitemap__table tr th { | |
| text-align: {$text_align}; | |
| } | |
| #sitemap__table tr td, | |
| #sitemap__table tr th { | |
| padding: 10px; | |
| } | |
| #sitemap__table tr:nth-child(odd) td { | |
| background-color: #eee; | |
| } | |
| a:hover { | |
| text-decoration: none; | |
| } | |
| EOF; | |
| /** | |
| * Filters the CSS only for the sitemap stylesheet. | |
| * | |
| * @since 5.5.0 | |
| * | |
| * @param string $css CSS to be applied to default XSL file. | |
| */ | |
| return apply_filters( 'wp_sitemaps_stylesheet_css', $css ); | |
| } | |
| } | |