    <div class="row">
        <div class="col-12">
            <pre class="with-hljs"><code class="lang-php">&lt;?php

class WP_Sitemaps_Stylesheet
{
    public function render_stylesheet($type)
    {
        header(&#039;Content-type: application/xml; charset=UTF-8&#039;);
        if (&#039;sitemap&#039; === $type) {
            echo $this-&gt;get_sitemap_stylesheet();
        }
        if (&#039;index&#039; === $type) {
            echo $this-&gt;get_sitemap_index_stylesheet();
        }
        exit;
    }
    public function get_sitemap_stylesheet()
    {
        $css = $this-&gt;get_stylesheet_css();
        $title = esc_xml(__(&#039;XML Sitemap&#039;));
        $description = esc_xml(__(&#039;This XML Sitemap is generated by WordPress to make your content more visible for search engines.&#039;));
        $learn_more = sprintf(&#039;&lt;a href=&quot;%s&quot;&gt;%s&lt;/a&gt;&#039;, esc_url(__(&#039;https://www.sitemaps.org/&#039;)), esc_xml(__(&#039;Learn more about XML sitemaps.&#039;)));
        $text = sprintf(esc_xml(__(&#039;Number of URLs in this XML Sitemap: %s.&#039;)), &#039;&lt;xsl:value-of select=&quot;count( sitemap:urlset/sitemap:url )&quot; /&gt;&#039;);
        $lang = get_language_attributes(&#039;html&#039;);
        $url = esc_xml(__(&#039;URL&#039;));
        $lastmod = esc_xml(__(&#039;Last Modified&#039;));
        $changefreq = esc_xml(__(&#039;Change Frequency&#039;));
        $priority = esc_xml(__(&#039;Priority&#039;));
        $xsl_content = &lt;&lt;&lt;XSL
&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;
&lt;xsl:stylesheet
\t\tversion=&quot;1.0&quot;
\t\txmlns:xsl=&quot;http://www.w3.org/1999/XSL/Transform&quot;
\t\txmlns:sitemap=&quot;http://www.sitemaps.org/schemas/sitemap/0.9&quot;
\t\texclude-result-prefixes=&quot;sitemap&quot;
\t\t&gt;

\t&lt;xsl:output method=&quot;html&quot; encoding=&quot;UTF-8&quot; indent=&quot;yes&quot;/&gt;

\t&lt;!--
\t  Set variables for whether lastmod, changefreq or priority occur for any url in the sitemap.
\t  We do this up front because it can be expensive in a large sitemap.
\t  --&gt;
\t&lt;xsl:variable name=&quot;has-lastmod&quot;    select=&quot;count( /sitemap:urlset/sitemap:url/sitemap:lastmod )&quot;    /&gt;
\t&lt;xsl:variable name=&quot;has-changefreq&quot; select=&quot;count( /sitemap:urlset/sitemap:url/sitemap:changefreq )&quot; /&gt;
\t&lt;xsl:variable name=&quot;has-priority&quot;   select=&quot;count( /sitemap:urlset/sitemap:url/sitemap:priority )&quot;   /&gt;

\t&lt;xsl:template match=&quot;/&quot;&gt;
\t\t&lt;html {$lang}&gt;
\t\t\t&lt;head&gt;
\t\t\t\t&lt;title&gt;{$title}&lt;/title&gt;
\t\t\t\t&lt;style&gt;
\t\t\t\t\t{$css}
\t\t\t\t&lt;/style&gt;
\t\t\t&lt;/head&gt;
\t\t\t&lt;body&gt;
\t\t\t\t&lt;div id=&quot;sitemap&quot;&gt;
\t\t\t\t\t&lt;div id=&quot;sitemap__header&quot;&gt;
\t\t\t\t\t\t&lt;h1&gt;{$title}&lt;/h1&gt;
\t\t\t\t\t\t&lt;p&gt;{$description}&lt;/p&gt;
\t\t\t\t\t\t&lt;p&gt;{$learn_more}&lt;/p&gt;
\t\t\t\t\t&lt;/div&gt;
\t\t\t\t\t&lt;div id=&quot;sitemap__content&quot;&gt;
\t\t\t\t\t\t&lt;p class=&quot;text&quot;&gt;{$text}&lt;/p&gt;
\t\t\t\t\t\t&lt;table id=&quot;sitemap__table&quot;&gt;
\t\t\t\t\t\t\t&lt;thead&gt;
\t\t\t\t\t\t\t\t&lt;tr&gt;
\t\t\t\t\t\t\t\t\t&lt;th class=&quot;loc&quot;&gt;{$url}&lt;/th&gt;
\t\t\t\t\t\t\t\t\t&lt;xsl:if test=&quot;\$has-lastmod&quot;&gt;
\t\t\t\t\t\t\t\t\t\t&lt;th class=&quot;lastmod&quot;&gt;{$lastmod}&lt;/th&gt;
\t\t\t\t\t\t\t\t\t&lt;/xsl:if&gt;
\t\t\t\t\t\t\t\t\t&lt;xsl:if test=&quot;\$has-changefreq&quot;&gt;
\t\t\t\t\t\t\t\t\t\t&lt;th class=&quot;changefreq&quot;&gt;{$changefreq}&lt;/th&gt;
\t\t\t\t\t\t\t\t\t&lt;/xsl:if&gt;
\t\t\t\t\t\t\t\t\t&lt;xsl:if test=&quot;\$has-priority&quot;&gt;
\t\t\t\t\t\t\t\t\t\t&lt;th class=&quot;priority&quot;&gt;{$priority}&lt;/th&gt;
\t\t\t\t\t\t\t\t\t&lt;/xsl:if&gt;
\t\t\t\t\t\t\t\t&lt;/tr&gt;
\t\t\t\t\t\t\t&lt;/thead&gt;
\t\t\t\t\t\t\t&lt;tbody&gt;
\t\t\t\t\t\t\t\t&lt;xsl:for-each select=&quot;sitemap:urlset/sitemap:url&quot;&gt;
\t\t\t\t\t\t\t\t\t&lt;tr&gt;
\t\t\t\t\t\t\t\t\t\t&lt;td class=&quot;loc&quot;&gt;&lt;a href=&quot;{sitemap:loc}&quot;&gt;&lt;xsl:value-of select=&quot;sitemap:loc&quot; /&gt;&lt;/a&gt;&lt;/td&gt;
\t\t\t\t\t\t\t\t\t\t&lt;xsl:if test=&quot;\$has-lastmod&quot;&gt;
\t\t\t\t\t\t\t\t\t\t\t&lt;td class=&quot;lastmod&quot;&gt;&lt;xsl:value-of select=&quot;sitemap:lastmod&quot; /&gt;&lt;/td&gt;
\t\t\t\t\t\t\t\t\t\t&lt;/xsl:if&gt;
\t\t\t\t\t\t\t\t\t\t&lt;xsl:if test=&quot;\$has-changefreq&quot;&gt;
\t\t\t\t\t\t\t\t\t\t\t&lt;td class=&quot;changefreq&quot;&gt;&lt;xsl:value-of select=&quot;sitemap:changefreq&quot; /&gt;&lt;/td&gt;
\t\t\t\t\t\t\t\t\t\t&lt;/xsl:if&gt;
\t\t\t\t\t\t\t\t\t\t&lt;xsl:if test=&quot;\$has-priority&quot;&gt;
\t\t\t\t\t\t\t\t\t\t\t&lt;td class=&quot;priority&quot;&gt;&lt;xsl:value-of select=&quot;sitemap:priority&quot; /&gt;&lt;/td&gt;
\t\t\t\t\t\t\t\t\t\t&lt;/xsl:if&gt;
\t\t\t\t\t\t\t\t\t&lt;/tr&gt;
\t\t\t\t\t\t\t\t&lt;/xsl:for-each&gt;
\t\t\t\t\t\t\t&lt;/tbody&gt;
\t\t\t\t\t\t&lt;/table&gt;
\t\t\t\t\t&lt;/div&gt;
\t\t\t\t&lt;/div&gt;
\t\t\t&lt;/body&gt;
\t\t&lt;/html&gt;
\t&lt;/xsl:template&gt;
&lt;/xsl:stylesheet&gt;

XSL;
        return apply_filters(&#039;wp_sitemaps_stylesheet_content&#039;, $xsl_content);
    }
    public function get_sitemap_index_stylesheet()
    {
        $css = $this-&gt;get_stylesheet_css();
        $title = esc_xml(__(&#039;XML Sitemap&#039;));
        $description = esc_xml(__(&#039;This XML Sitemap is generated by WordPress to make your content more visible for search engines.&#039;));
        $learn_more = sprintf(&#039;&lt;a href=&quot;%s&quot;&gt;%s&lt;/a&gt;&#039;, esc_url(__(&#039;https://www.sitemaps.org/&#039;)), esc_xml(__(&#039;Learn more about XML sitemaps.&#039;)));
        $text = sprintf(esc_xml(__(&#039;Number of URLs in this XML Sitemap: %s.&#039;)), &#039;&lt;xsl:value-of select=&quot;count( sitemap:sitemapindex/sitemap:sitemap )&quot; /&gt;&#039;);
        $lang = get_language_attributes(&#039;html&#039;);
        $url = esc_xml(__(&#039;URL&#039;));
        $lastmod = esc_xml(__(&#039;Last Modified&#039;));
        $xsl_content = &lt;&lt;&lt;XSL
&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;
&lt;xsl:stylesheet
\t\tversion=&quot;1.0&quot;
\t\txmlns:xsl=&quot;http://www.w3.org/1999/XSL/Transform&quot;
\t\txmlns:sitemap=&quot;http://www.sitemaps.org/schemas/sitemap/0.9&quot;
\t\texclude-result-prefixes=&quot;sitemap&quot;
\t\t&gt;

\t&lt;xsl:output method=&quot;html&quot; encoding=&quot;UTF-8&quot; indent=&quot;yes&quot; /&gt;

\t&lt;!--
\t  Set variables for whether lastmod occurs for any sitemap in the index.
\t  We do this up front because it can be expensive in a large sitemap.
\t  --&gt;
\t&lt;xsl:variable name=&quot;has-lastmod&quot; select=&quot;count( /sitemap:sitemapindex/sitemap:sitemap/sitemap:lastmod )&quot; /&gt;

\t&lt;xsl:template match=&quot;/&quot;&gt;
\t\t&lt;html {$lang}&gt;
\t\t\t&lt;head&gt;
\t\t\t\t&lt;title&gt;{$title}&lt;/title&gt;
\t\t\t\t&lt;style&gt;
\t\t\t\t\t{$css}
\t\t\t\t&lt;/style&gt;
\t\t\t&lt;/head&gt;
\t\t\t&lt;body&gt;
\t\t\t\t&lt;div id=&quot;sitemap&quot;&gt;
\t\t\t\t\t&lt;div id=&quot;sitemap__header&quot;&gt;
\t\t\t\t\t\t&lt;h1&gt;{$title}&lt;/h1&gt;
\t\t\t\t\t\t&lt;p&gt;{$description}&lt;/p&gt;
\t\t\t\t\t\t&lt;p&gt;{$learn_more}&lt;/p&gt;
\t\t\t\t\t&lt;/div&gt;
\t\t\t\t\t&lt;div id=&quot;sitemap__content&quot;&gt;
\t\t\t\t\t\t&lt;p class=&quot;text&quot;&gt;{$text}&lt;/p&gt;
\t\t\t\t\t\t&lt;table id=&quot;sitemap__table&quot;&gt;
\t\t\t\t\t\t\t&lt;thead&gt;
\t\t\t\t\t\t\t\t&lt;tr&gt;
\t\t\t\t\t\t\t\t\t&lt;th class=&quot;loc&quot;&gt;{$url}&lt;/th&gt;
\t\t\t\t\t\t\t\t\t&lt;xsl:if test=&quot;\$has-lastmod&quot;&gt;
\t\t\t\t\t\t\t\t\t\t&lt;th class=&quot;lastmod&quot;&gt;{$lastmod}&lt;/th&gt;
\t\t\t\t\t\t\t\t\t&lt;/xsl:if&gt;
\t\t\t\t\t\t\t\t&lt;/tr&gt;
\t\t\t\t\t\t\t&lt;/thead&gt;
\t\t\t\t\t\t\t&lt;tbody&gt;
\t\t\t\t\t\t\t\t&lt;xsl:for-each select=&quot;sitemap:sitemapindex/sitemap:sitemap&quot;&gt;
\t\t\t\t\t\t\t\t\t&lt;tr&gt;
\t\t\t\t\t\t\t\t\t\t&lt;td class=&quot;loc&quot;&gt;&lt;a href=&quot;{sitemap:loc}&quot;&gt;&lt;xsl:value-of select=&quot;sitemap:loc&quot; /&gt;&lt;/a&gt;&lt;/td&gt;
\t\t\t\t\t\t\t\t\t\t&lt;xsl:if test=&quot;\$has-lastmod&quot;&gt;
\t\t\t\t\t\t\t\t\t\t\t&lt;td class=&quot;lastmod&quot;&gt;&lt;xsl:value-of select=&quot;sitemap:lastmod&quot; /&gt;&lt;/td&gt;
\t\t\t\t\t\t\t\t\t\t&lt;/xsl:if&gt;
\t\t\t\t\t\t\t\t\t&lt;/tr&gt;
\t\t\t\t\t\t\t\t&lt;/xsl:for-each&gt;
\t\t\t\t\t\t\t&lt;/tbody&gt;
\t\t\t\t\t\t&lt;/table&gt;
\t\t\t\t\t&lt;/div&gt;
\t\t\t\t&lt;/div&gt;
\t\t\t&lt;/body&gt;
\t\t&lt;/html&gt;
\t&lt;/xsl:template&gt;
&lt;/xsl:stylesheet&gt;

XSL;
        return apply_filters(&#039;wp_sitemaps_stylesheet_index_content&#039;, $xsl_content);
    }
    public function get_stylesheet_css()
    {
        $text_align = is_rtl() ? &#039;right&#039; : &#039;left&#039;;
        $css = &lt;&lt;&lt;EOF

\t\t\t\t\tbody {
\t\t\t\t\t\tfont-family: -apple-system, BlinkMacSystemFont, &quot;Segoe UI&quot;, Roboto, Oxygen-Sans, Ubuntu, Cantarell, &quot;Helvetica Neue&quot;, sans-serif;
\t\t\t\t\t\tcolor: #444;
\t\t\t\t\t}

\t\t\t\t\t#sitemap {
\t\t\t\t\t\tmax-width: 980px;
\t\t\t\t\t\tmargin: 0 auto;
\t\t\t\t\t}

\t\t\t\t\t#sitemap__table {
\t\t\t\t\t\twidth: 100%;
\t\t\t\t\t\tborder: solid 1px #ccc;
\t\t\t\t\t\tborder-collapse: collapse;
\t\t\t\t\t}

\t\t\t \t\t#sitemap__table tr td.loc {
\t\t\t\t\t\t/*
\t\t\t\t\t\t * URLs should always be LTR.
\t\t\t\t\t\t * See https://core.trac.wordpress.org/ticket/16834
\t\t\t\t\t\t * and https://core.trac.wordpress.org/ticket/49949
\t\t\t\t\t\t */
\t\t\t\t\t\tdirection: ltr;
\t\t\t\t\t}

\t\t\t\t\t#sitemap__table tr th {
\t\t\t\t\t\ttext-align: {$text_align};
\t\t\t\t\t}

\t\t\t\t\t#sitemap__table tr td,
\t\t\t\t\t#sitemap__table tr th {
\t\t\t\t\t\tpadding: 10px;
\t\t\t\t\t}

\t\t\t\t\t#sitemap__table tr:nth-child(odd) td {
\t\t\t\t\t\tbackground-color: #eee;
\t\t\t\t\t}

\t\t\t\t\ta:hover {
\t\t\t\t\t\ttext-decoration: none;
\t\t\t\t\t}

EOF;
        return apply_filters(&#039;wp_sitemaps_stylesheet_css&#039;, $css);
    }
}</code></pre>        </div>
    </div>