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<?php

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/**

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* Sitemaps: WP_Sitemaps_Stylesheet class

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* This class provides the XSL stylesheets to style all sitemaps.

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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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* Stylesheet provider class.

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* @since 5.5.0

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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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* @param string $type Stylesheet type. Either 'sitemap' or 'index'.

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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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* @since 5.5.0

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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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<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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<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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<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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<thead>

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<tr>

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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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<xsl:if test="\$has-lastmod">

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</xsl:if>

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<xsl:if test="\$has-changefreq">

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</xsl:if>

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<xsl:if test="\$has-priority">

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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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* @since 5.5.0

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* @param string $xsl_content Full content for the XML stylesheet.

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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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* @since 5.5.0

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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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<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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<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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<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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<thead>

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<tr>

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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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<xsl:if test="\$has-lastmod">

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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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* @since 5.5.0

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* @param string $xsl_content Full content for the XML stylesheet.

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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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* @since 5.5.0

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* @return string The CSS.

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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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* 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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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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* @since 5.5.0

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* @param string $css CSS to be applied to default XSL file.

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return apply_filters( 'wp_sitemaps_stylesheet_css', $css );

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}

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}

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