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1 <?php 2 /** 3 * Sitemaps: WP_Sitemaps_Stylesheet class 4 * 5 * This class provides the XSL stylesheets to style all sitemaps. 6 * 7 * @package WordPress 8 * @subpackage Sitemaps 9 * @since 5.5.0 10 */ 11 12 /** 13 * Stylesheet provider class. 14 * 15 * @since 5.5.0 16 */ 17 #[AllowDynamicProperties] 18 class WP_Sitemaps_Stylesheet { 19 /** 20 * Renders the XSL stylesheet depending on whether it's the sitemap index or not. 21 * 22 * @param string $type Stylesheet type. Either 'sitemap' or 'index'. 23 */ 24 public function render_stylesheet( $type ) { 25 header( 'Content-Type: application/xml; charset=UTF-8' ); 26 27 if ( 'sitemap' === $type ) { 28 // All content is escaped below. 29 echo $this->get_sitemap_stylesheet(); 30 } 31 32 if ( 'index' === $type ) { 33 // All content is escaped below. 34 echo $this->get_sitemap_index_stylesheet(); 35 } 36 37 exit; 38 } 39 40 /** 41 * Returns the escaped XSL for all sitemaps, except index. 42 * 43 * @since 5.5.0 44 */ 45 public function get_sitemap_stylesheet() { 46 $css = $this->get_stylesheet_css(); 47 $title = esc_xml( __( 'XML Sitemap' ) ); 48 $description = esc_xml( __( 'This XML Sitemap is generated by WordPress to make your content more visible for search engines.' ) ); 49 $learn_more = sprintf( 50 '<a href="%s">%s</a>', 51 esc_url( __( 'https://www.sitemaps.org/' ) ), 52 esc_xml( __( 'Learn more about XML sitemaps.' ) ) 53 ); 54 55 $text = sprintf( 56 /* translators: %s: Number of URLs. */ 57 esc_xml( __( 'Number of URLs in this XML Sitemap: %s.' ) ), 58 '<xsl:value-of select="count( sitemap:urlset/sitemap:url )" />' 59 ); 60 61 $lang = get_language_attributes( 'html' ); 62 $url = esc_xml( __( 'URL' ) ); 63 $lastmod = esc_xml( __( 'Last Modified' ) ); 64 $changefreq = esc_xml( __( 'Change Frequency' ) ); 65 $priority = esc_xml( __( 'Priority' ) ); 66 67 $xsl_content = <<<XSL 68 <?xml version="1.0" encoding="UTF-8"?> 69 <xsl:stylesheet 70 version="1.0" 71 xmlns:xsl="http://www.w3.org/1999/XSL/Transform" 72 xmlns:sitemap="http://www.sitemaps.org/schemas/sitemap/0.9" 73 exclude-result-prefixes="sitemap" 74 > 75 76 <xsl:output method="html" encoding="UTF-8" indent="yes" /> 77 78 <!-- 79 Set variables for whether lastmod, changefreq or priority occur for any url in the sitemap. 80 We do this up front because it can be expensive in a large sitemap. 81 --> 82 <xsl:variable name="has-lastmod" select="count( /sitemap:urlset/sitemap:url/sitemap:lastmod )" /> 83 <xsl:variable name="has-changefreq" select="count( /sitemap:urlset/sitemap:url/sitemap:changefreq )" /> 84 <xsl:variable name="has-priority" select="count( /sitemap:urlset/sitemap:url/sitemap:priority )" /> 85 86 <xsl:template match="/"> 87 <html {$lang}> 88 <head> 89 <title>{$title}</title> 90 <style> 91 {$css} 92 </style> 93 </head> 94 <body> 95 <div id="sitemap"> 96 <div id="sitemap__header"> 97 <h1>{$title}</h1> 98 <p>{$description}</p> 99 <p>{$learn_more}</p> 100 </div> 101 <div id="sitemap__content"> 102 <p class="text">{$text}</p> 103 <table id="sitemap__table"> 104 <thead> 105 <tr> 106 <th class="loc">{$url}</th> 107 <xsl:if test="\$has-lastmod"> 108 <th class="lastmod">{$lastmod}</th> 109 </xsl:if> 110 <xsl:if test="\$has-changefreq"> 111 <th class="changefreq">{$changefreq}</th> 112 </xsl:if> 113 <xsl:if test="\$has-priority"> 114 <th class="priority">{$priority}</th> 115 </xsl:if> 116 </tr> 117 </thead> 118 <tbody> 119 <xsl:for-each select="sitemap:urlset/sitemap:url"> 120 <tr> 121 <td class="loc"><a href="{sitemap:loc}"><xsl:value-of select="sitemap:loc" /></a></td> 122 <xsl:if test="\$has-lastmod"> 123 <td class="lastmod"><xsl:value-of select="sitemap:lastmod" /></td> 124 </xsl:if> 125 <xsl:if test="\$has-changefreq"> 126 <td class="changefreq"><xsl:value-of select="sitemap:changefreq" /></td> 127 </xsl:if> 128 <xsl:if test="\$has-priority"> 129 <td class="priority"><xsl:value-of select="sitemap:priority" /></td> 130 </xsl:if> 131 </tr> 132 </xsl:for-each> 133 </tbody> 134 </table> 135 </div> 136 </div> 137 </body> 138 </html> 139 </xsl:template> 140 </xsl:stylesheet> 141 142 XSL; 143 144 /** 145 * Filters the content of the sitemap stylesheet. 146 * 147 * @since 5.5.0 148 * 149 * @param string $xsl_content Full content for the XML stylesheet. 150 */ 151 return apply_filters( 'wp_sitemaps_stylesheet_content', $xsl_content ); 152 } 153 154 /** 155 * Returns the escaped XSL for the index sitemaps. 156 * 157 * @since 5.5.0 158 */ 159 public function get_sitemap_index_stylesheet() { 160 $css = $this->get_stylesheet_css(); 161 $title = esc_xml( __( 'XML Sitemap' ) ); 162 $description = esc_xml( __( 'This XML Sitemap is generated by WordPress to make your content more visible for search engines.' ) ); 163 $learn_more = sprintf( 164 '<a href="%s">%s</a>', 165 esc_url( __( 'https://www.sitemaps.org/' ) ), 166 esc_xml( __( 'Learn more about XML sitemaps.' ) ) 167 ); 168 169 $text = sprintf( 170 /* translators: %s: Number of URLs. */ 171 esc_xml( __( 'Number of URLs in this XML Sitemap: %s.' ) ), 172 '<xsl:value-of select="count( sitemap:sitemapindex/sitemap:sitemap )" />' 173 ); 174 175 $lang = get_language_attributes( 'html' ); 176 $url = esc_xml( __( 'URL' ) ); 177 $lastmod = esc_xml( __( 'Last Modified' ) ); 178 179 $xsl_content = <<<XSL 180 <?xml version="1.0" encoding="UTF-8"?> 181 <xsl:stylesheet 182 version="1.0" 183 xmlns:xsl="http://www.w3.org/1999/XSL/Transform" 184 xmlns:sitemap="http://www.sitemaps.org/schemas/sitemap/0.9" 185 exclude-result-prefixes="sitemap" 186 > 187 188 <xsl:output method="html" encoding="UTF-8" indent="yes" /> 189 190 <!-- 191 Set variables for whether lastmod occurs for any sitemap in the index. 192 We do this up front because it can be expensive in a large sitemap. 193 --> 194 <xsl:variable name="has-lastmod" select="count( /sitemap:sitemapindex/sitemap:sitemap/sitemap:lastmod )" /> 195 196 <xsl:template match="/"> 197 <html {$lang}> 198 <head> 199 <title>{$title}</title> 200 <style> 201 {$css} 202 </style> 203 </head> 204 <body> 205 <div id="sitemap"> 206 <div id="sitemap__header"> 207 <h1>{$title}</h1> 208 <p>{$description}</p> 209 <p>{$learn_more}</p> 210 </div> 211 <div id="sitemap__content"> 212 <p class="text">{$text}</p> 213 <table id="sitemap__table"> 214 <thead> 215 <tr> 216 <th class="loc">{$url}</th> 217 <xsl:if test="\$has-lastmod"> 218 <th class="lastmod">{$lastmod}</th> 219 </xsl:if> 220 </tr> 221 </thead> 222 <tbody> 223 <xsl:for-each select="sitemap:sitemapindex/sitemap:sitemap"> 224 <tr> 225 <td class="loc"><a href="{sitemap:loc}"><xsl:value-of select="sitemap:loc" /></a></td> 226 <xsl:if test="\$has-lastmod"> 227 <td class="lastmod"><xsl:value-of select="sitemap:lastmod" /></td> 228 </xsl:if> 229 </tr> 230 </xsl:for-each> 231 </tbody> 232 </table> 233 </div> 234 </div> 235 </body> 236 </html> 237 </xsl:template> 238 </xsl:stylesheet> 239 240 XSL; 241 242 /** 243 * Filters the content of the sitemap index stylesheet. 244 * 245 * @since 5.5.0 246 * 247 * @param string $xsl_content Full content for the XML stylesheet. 248 */ 249 return apply_filters( 'wp_sitemaps_stylesheet_index_content', $xsl_content ); 250 } 251 252 /** 253 * Gets the CSS to be included in sitemap XSL stylesheets. 254 * 255 * @since 5.5.0 256 * 257 * @return string The CSS. 258 */ 259 public function get_stylesheet_css() { 260 $text_align = is_rtl() ? 'right' : 'left'; 261 262 $css = <<<EOF 263 264 body { 265 font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif; 266 color: #444; 267 } 268 269 #sitemap { 270 max-width: 980px; 271 margin: 0 auto; 272 } 273 274 #sitemap__table { 275 width: 100%; 276 border: solid 1px #ccc; 277 border-collapse: collapse; 278 } 279 280 #sitemap__table tr td.loc { 281 /* 282 * URLs should always be LTR. 283 * See https://core.trac.wordpress.org/ticket/16834 284 * and https://core.trac.wordpress.org/ticket/49949 285 */ 286 direction: ltr; 287 } 288 289 #sitemap__table tr th { 290 text-align: {$text_align}; 291 } 292 293 #sitemap__table tr td, 294 #sitemap__table tr th { 295 padding: 10px; 296 } 297 298 #sitemap__table tr:nth-child(odd) td { 299 background-color: #eee; 300 } 301 302 a:hover { 303 text-decoration: none; 304 } 305 306 EOF; 307 308 /** 309 * Filters the CSS only for the sitemap stylesheet. 310 * 311 * @since 5.5.0 312 * 313 * @param string $css CSS to be applied to default XSL file. 314 */ 315 return apply_filters( 'wp_sitemaps_stylesheet_css', $css ); 316 } 317 }
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| Generated : Sat Dec 21 08:20:01 2024 | Cross-referenced by PHPXref |