WordPress/wp-includes/sitemaps/class-wp-sitemaps-stylesheet.php

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<?php
/**
* 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
*/
Code Modernization: Add `AllowDynamicProperties` attribute to all (parent) classes. Dynamic (non-explicitly declared) properties are deprecated as of PHP 8.2 and are expected to become a fatal error in PHP 9.0. There are a number of ways to mitigate this: * If it is an accidental typo for a declared property: fix the typo. * For known properties: declare them on the class. * For unknown properties: add the magic `__get()`, `__set()`, et al. methods to the class or let the class extend `stdClass` which has highly optimized versions of these magic methods built in. * For unknown ''use'' of dynamic properties, the `#[AllowDynamicProperties]` attribute can be added to the class. The attribute will automatically be inherited by child classes. Trac ticket #56034 is open to investigate and handle the third and fourth type of situations, however it has become clear this will need more time and will not be ready in time for WP 6.1. To reduce “noise” in the meantime, both in the error logs of WP users moving onto PHP 8.2, in the test run logs of WP itself, in test runs of plugins and themes, as well as to prevent duplicate tickets from being opened for the same issue, this commit adds the `#[AllowDynamicProperties]` attribute to all “parent” classes in WP. The logic used for this commit is as follows: * If a class already has the attribute: no action needed. * If a class does not `extend`: add the attribute. * If a class does `extend`: - If it extends `stdClass`: no action needed (as `stdClass` supports dynamic properties). - If it extends a PHP native class: add the attribute. - If it extends a class from one of WP's external dependencies: add the attribute. * In all other cases: no action — the attribute should not be needed as child classes inherit from the parent. Whether or not a class contains magic methods has not been taken into account, as a review of the currently existing magic methods has shown that those are generally not sturdy enough and often even set dynamic properties (which they should not). See the [https://www.youtube.com/watch?v=vDZWepDQQVE live stream from August 16, 2022] for more details. This commit only affects classes in the `src` directory of WordPress core. * Tests should not get this attribute, but should be fixed to not use dynamic properties instead. Patches for this are already being committed under ticket #56033. * While a number bundled themes (2014, 2019, 2020, 2021) contain classes, they are not a part of this commit and may be updated separately. Reference: [https://wiki.php.net/rfc/deprecate_dynamic_properties PHP RFC: Deprecate dynamic properties]. Follow-up to [53922]. Props jrf, hellofromTonya, markjaquith, peterwilsoncc, costdev, knutsp, aristath. See #56513, #56034. Built from https://develop.svn.wordpress.org/trunk@54133 git-svn-id: http://core.svn.wordpress.org/trunk@53692 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2022-09-12 17:47:14 +02:00
#[AllowDynamicProperties]
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 );
}
}