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