mirror of https://github.com/vtrois/kratos
134 lines
4.2 KiB
PHP
134 lines
4.2 KiB
PHP
<?php
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/**
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* 站点相关函数
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* @author Seaton Jiang <hi@seatonjiang.com>
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* @license GPL-3.0 License
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* @version 2023.04.05
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*/
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// 标题配置
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function title($title, $sep)
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{
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global $paged, $page;
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if (is_feed()) {
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return $title;
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}
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$title .= get_bloginfo('name');
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$site_description = get_bloginfo('description', 'display');
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if ($site_description && (is_home() || is_front_page())) {
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$title = "{$title} {$sep} {$site_description}";
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}
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if ($paged >= 2 || $page >= 2) {
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$title = "{$title} {$sep} " . sprintf(__('第 %s 页', 'kratos'), max($paged, $page));
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}
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return $title;
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}
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add_filter('wp_title', 'title', 10, 2);
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// Keywords 配置
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function keywords()
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{
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global $post;
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$keywords = '';
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if (is_home()) {
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$keywords = kratos_option('seo_keywords');
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} elseif (is_single()) {
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$keywords = get_post_meta($post->ID, "seo_keywords_value", true);
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if ($keywords == '') {
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$tags = wp_get_post_tags($post->ID);
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foreach ($tags as $tag) {
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$keywords = $keywords . $tag->name . ",";
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}
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$keywords = rtrim($keywords, ',');
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}
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} elseif (is_page()) {
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$keywords = get_post_meta($post->ID, "seo_keywords_value", true);
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if ($keywords == '') {
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$keywords = kratos_option('seo_keywords');
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}
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} else {
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$keywords = single_tag_title('', false);
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}
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return trim(esc_attr(strip_tags($keywords)));
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}
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// Description 配置
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function description()
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{
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global $post;
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$description = '';
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if (is_home()) {
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$description = kratos_option('seo_description');
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} elseif (is_single()) {
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$description = get_post_meta($post->ID, "seo_description_value", true);
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if ($description == '') {
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$description = get_the_excerpt();
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}
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if ($description == '') {
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$description = str_replace("\n", "", mb_strimwidth(strip_tags($post->post_content), 0, 200, "…", 'utf-8'));
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}
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} elseif (is_category()) {
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$description = category_description();
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} elseif (is_tag()) {
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$description = tag_description();
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} elseif (is_page()) {
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$description = get_post_meta($post->ID, "seo_description_value", true);
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if ($description == '') {
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$description = kratos_option('seo_description');
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}
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}
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return trim(esc_attr(strip_tags($description)));
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}
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// robots.txt 配置
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add_filter('robots_txt', function ($output, $public) {
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if ('0' == $public) {
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return "User-agent: *\nDisallow: /\n";
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} else {
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if (!empty(kratos_option('seo_robots_fieldset')['seo_robots'])) {
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$output = esc_attr(strip_tags(kratos_option('seo_robots_fieldset')['seo_robots']));
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}
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return $output;
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}
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}, 10, 2);
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// 哀悼黑白站点
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function mourning()
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{
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if (is_home() && kratos_option('g_rip', false)) {
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echo '<style type="text/css">html{filter: grayscale(100%);-webkit-filter: grayscale(100%);-moz-filter: grayscale(100%);-ms-filter: grayscale(100%);-o-filter: grayscale(100%);filter: progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);filter: gray;-webkit-filter: grayscale(1); } </style>';
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}
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}
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// 抓取图片链接（搜索引擎或者社交工具分享时抓取图片的链接）
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function share_thumbnail_url()
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{
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global $post;
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if (!is_object($post))
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return;
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if (has_post_thumbnail($post->ID)) {
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$post_thumbnail_id = get_post_thumbnail_id($post);
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// Return array|false Array of image data, or boolean false if no image is available.
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$img = wp_get_attachment_image_src($post_thumbnail_id, 'full');
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$img && $img = $img[0];
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} else {
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$content = $post->post_content;
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preg_match_all('/<img.*?(?: |\\t|\\r|\\n)?src=[\'"]?(.+?)[\'"]?(?:(?: |\\t|\\r|\\n)+.*?); ?>/sim', $content, $strResult, PREG_PATTERN_ORDER);
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if (!empty($strResult[1])) {
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$img = $strResult[1][0];
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} else {
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$img = kratos_option('seo_shareimg', ASSET_PATH . '/assets/img/default.jpg');
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}
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}
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return $img;
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}
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// 支持上传 svg
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add_filter('upload_mimes', 'upload_svg');
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function upload_svg($existing_mimes = array())
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{
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$existing_mimes['svg'] = 'image/svg+xml';
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return $existing_mimes;
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}
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