wordpress-kratos-yang/inc/theme-article.php

<?php
/**
 * 文章相关函数
 * @author Yongquan Yang <yangyq.net>
 * @license MIT License
 * @version 2020.06.13
 */

// 文章链接添加 target 和 rel
function imgnofollow($content)
{
    $regexp = "<a\s[^>]*href=(\"??)([^\" >]*?)\\1[^>]*>";
    if (preg_match_all("/$regexp/siU", $content, $matches, PREG_SET_ORDER)) {
        if (!empty($matches)) {
            $srcUrl = get_option('siteurl');
            for ($i = 0; $i < count($matches); $i++) {
                $tag = $matches[$i][0];
                $tag2 = $matches[$i][0];
                $url = $matches[$i][0];
                $noFollow = '';
                $pattern = '/target\s*=\s*"\s*_blank\s*"/';
                preg_match($pattern, $tag2, $match, PREG_OFFSET_CAPTURE);
                if (count($match) < 1) {
                    $noFollow .= ' target="_blank" ';
                }

                $pattern = '/rel\s*=\s*"\s*[n|d]ofollow\s*"/';
                preg_match($pattern, $tag2, $match, PREG_OFFSET_CAPTURE);
                if (count($match) < 1) {
                    $noFollow .= ' rel="nofollow" ';
                }

                $pos = strpos($url, $srcUrl);
                if ($pos === false) {
                    $tag = rtrim($tag, '>');
                    $tag .= $noFollow . '>';
                    $content = str_replace($tag2, $tag, $content);
                }
            }
        }
    }
    $content = str_replace(']]>', ']]>', $content);
    return $content;
}
add_filter('the_content', 'imgnofollow');

// 文章点赞
function love()
{
    global $wpdb, $post;
    $id = $_POST["um_id"];
    $action = $_POST["um_action"];
    if ($action == 'love') {
        $raters = get_post_meta($id, 'love', true);
        $expire = time() + 99999999;
        $domain = ($_SERVER['HTTP_HOST'] != 'localhost') ? $_SERVER['HTTP_HOST'] : false;
        setcookie('love_' . $id, $id, $expire, '/', $domain, false);
        if (!$raters || !is_numeric($raters)) {
            update_post_meta($id, 'love', 1);
        } else {
            update_post_meta($id, 'love', ($raters + 1));
        }
        echo get_post_meta($id, 'love', true);
    }
    die;
}
add_action('wp_ajax_nopriv_love', 'love');
add_action('wp_ajax_love', 'love');

// 文章阅读次数统计
function set_post_views()
{
    if (is_singular()) {
        global $post;
        $post_ID = $post->ID;
        if ($post_ID) {
            $post_views = (int) get_post_meta($post_ID, 'views', true);
            if (!update_post_meta($post_ID, 'views', ($post_views + 1))) {
                add_post_meta($post_ID, 'views', 1, true);
            }
        }
    }
}
add_action('wp_head', 'set_post_views');

function get_post_views($echo = 1)
{
    global $post;
    $post_ID = $post->ID;
    $views = (int) get_post_meta($post_ID, 'views', true);
    return $views;
}

// 文章列表简介内容
function excerpt_length($length)
{
    return 260;
}
add_filter('excerpt_length', 'excerpt_length');

// 开启特色图
add_theme_support("post-thumbnails");

// 文章特色图片
function post_thumbnail()
{
    global $post;
    $img_id = get_post_thumbnail_id();
    $img_url = wp_get_attachment_image_src($img_id, array(720, 435));
    if (is_array($img_url)) {
        $img_url = $img_url[0];
    }
    if (has_post_thumbnail()) {
        echo '<img src="' . $img_url . '" />';
    } else {
        $content = $post->post_content;
        $img_preg = "/<img (.*?)src=\"(.+?)\".*?>/";
        preg_match($img_preg, $content, $img_src);
        $img_count = count($img_src) - 1;
        if (isset($img_src[$img_count])) {
            $img_val = $img_src[$img_count];
        }
        if (!empty($img_val)) {
            echo '<img src="' . esc_url($img_val) . '" />';
        } else {
            /* 正文里没图、也没设特色图时用默认特色图。
               空值（用户清过那一格）同样落到包内默认图。 */
            $img = yang_option_image('g_postthumbnail');
            if ($img !== '') {
                echo '<img src="' . esc_url($img) . '" />';
            }
        }
    }
}

// 文章列表分页
function pagelist($range = 5)
{
    global $paged, $wp_query, $max_page;
    if (!$max_page) {$max_page = $wp_query->max_num_pages;}
    if ($max_page > 1) {if (!$paged) {$paged = 1;}
        echo "<div class='paginations'>";
        if ($paged > 1) {
            echo '<a href="' . get_pagenum_link($paged - 1) . '" class="prev" title="上一页"><i class="kicon i-larrows"></i></a>';
        }
        if ($max_page > $range) {
            if ($paged < $range) {
                for ($i = 1; $i <= $range; $i++) {
                    if ($i == $paged) {
                        echo '<span class="page-numbers current">' . $i . '</span>';
                    } else {
                        echo "<a href='" . get_pagenum_link($i) . "'>$i</a>";
                    }
                }
                echo '<span class="page-numbers dots">…</span>';
                echo "<a href='" . get_pagenum_link($max_page) . "'>$max_page</a>";
            } elseif ($paged >= ($max_page - ceil(($range / 2)))) {
                if ($paged != 1) {
                    echo "<a href='" . get_pagenum_link(1) . "' class='extend' title='首页'>1</a>";
                    echo '<span class="page-numbers dots">…</span>';
                }
                for ($i = $max_page - $range + 1; $i <= $max_page; $i++) {
                    if ($i == $paged) {
                        echo '<span class="page-numbers current">' . $i . '</span>';
                    } else {
                        echo "<a href='" . get_pagenum_link($i) . "'>$i</a>";
                    }
                }
            } elseif ($paged >= $range && $paged < ($max_page - ceil(($range / 2)))) {
                if ($paged != 1) {
                    echo "<a href='" . get_pagenum_link(1) . "' class='extend' title='首页'>1</a>";
                    echo '<span class="page-numbers dots">…</span>';
                }
                for ($i = ($paged - ceil($range / 3)); $i <= ($paged + ceil(($range / 3))); $i++) {
                    if ($i == $paged) {
                        echo '<span class="page-numbers current">' . $i . '</span>';
                    } else {
                        echo "<a href='" . get_pagenum_link($i) . "'>$i</a>";
                    }
                }
                echo '<span class="page-numbers dots">…</span>';
                echo "<a href='" . get_pagenum_link($max_page) . "'>$max_page</a>";
            }
        } else {
            for ($i = 1; $i <= $max_page; $i++) {
                if ($i == $paged) {
                    echo '<span class="page-numbers current">' . $i . '</span>';
                } else {
                    echo "<a href='" . get_pagenum_link($i) . "'>$i</a>";
                }
            }
        }
        if ($paged < $max_page) {
            echo '<a href="' . get_pagenum_link($paged + 1) . '" class="next" title="下一页"><i class="kicon i-rarrows"></i></a>';
        }
        echo "</div>";
    }
}

/* ── 评论相关已迁到 inc/theme-comments.php（3.2.18）──────────────
 *
 * 原先这里有一段 201~294 行的评论实现（comment_scripts /
 * comment_callback / comment_callbacks）和 380~385 行的
 * recover_comment_fields。迁走的原因是：
 *
 *   · 列表渲染与 AJAX 渲染**各写了一份 HTML**，已经分叉 ——
 *     AJAX 返回的新评论没有「回复」按钮，必须刷新页面才出现；
 *   · 提交逻辑用的是旧的 layer 弹窗 + 直接透传后端原始响应；
 *   · 缺少 nonce 校验、缺少防重复提交。
 *
 * 新实现统一到 yang_comment_html() 一个渲染函数，两边都调它，
 * 从结构上消除分叉可能。函数名 comment_callbacks / comment_scripts
 * 也都在新文件里以兼容形式保留，所以 comments.php 不必改调用点。
 * ------------------------------------------------------------ */

// 文章评论表情
function custom_smilies_src($img_src, $img, $siteurl)
{
    return ASSET_PATH . '/assets/img/smilies/' . $img;
}
add_filter('smilies_src', 'custom_smilies_src', 1, 10);

function disable_emojis_tinymce($plugins)
{
    return array_diff($plugins, array('wpemoji'));
}
function smilies_reset()
{
    global $wpsmiliestrans, $wp_smiliessearch, $wp_version;
    if (!get_option('use_smilies') || $wp_version < 4.2) {
        return;
    }

    $wpsmiliestrans = array(
        ':mrgreen:' => 'mrgreen.png',
        ':exclaim:' => 'exclaim.png',
        ':neutral:' => 'neutral.png',
        ':twisted:' => 'twisted.png',
        ':arrow:' => 'arrow.png',
        ':eek:' => 'eek.png',
        ':smile:' => 'smile.png',
        ':confused:' => 'confused.png',
        ':cool:' => 'cool.png',
        ':evil:' => 'evil.png',
        ':biggrin:' => 'biggrin.png',
        ':idea:' => 'idea.png',
        ':redface:' => 'redface.png',
        ':razz:' => 'razz.png',
        ':rolleyes:' => 'rolleyes.png',
        ':wink:' => 'wink.png',
        ':cry:' => 'cry.png',
        ':lol:' => 'lol.png',
        ':mad:' => 'mad.png',
        ':drooling:' => 'drooling.png',
        ':persevering:' => 'persevering.png',
    );
}
smilies_reset();

function smilies_custom_button()
{
    printf('<style>.smilies-wrap{background:#fff;border: 1px solid #ccc;box-shadow: 2px 2px 3px rgba(0, 0, 0, 0.24);padding: 10px;position: absolute;top: 60px;width: 400px;display:none}.smilies-wrap img{height:24px;width:24px;cursor:pointer;margin-bottom:5px} .is-active.smilies-wrap{display:block}@media screen and (max-width: 782px){ #wp-content-media-buttons a { font-size: 14px; padding: 0 14px; }}</style><a id="insert-media-button" style="position:relative" class="button insert-smilies add_smilies" data-editor="content" href="javascript:;"><span class="dashicons dashicons-smiley" style="line-height: 26px;"></span>' . __('添加表情', 'kratos') . '</a><div class="smilies-wrap">' . get_wpsmiliestrans() . '</div><script>jQuery(document).ready(function(){jQuery(document).on("click", ".insert-smilies",function() { if(jQuery(".smilies-wrap").hasClass("is-active")){jQuery(".smilies-wrap").removeClass("is-active");}else{jQuery(".smilies-wrap").addClass("is-active");}});jQuery(document).on("click", ".add-smily",function() { send_to_editor(" " + jQuery(this).data("smilies") + " ");jQuery(".smilies-wrap").removeClass("is-active");return false;});});</script>');
}
add_action('media_buttons', 'smilies_custom_button');

function get_wpsmiliestrans()
{
    global $wpsmiliestrans;
    global $output;
    $wpsmilies = array_unique($wpsmiliestrans);
    foreach ($wpsmilies as $alt => $src_path) {
        $output .= '<a class="add-smily" data-smilies="' . $alt . '"><img class="wp-smiley" src="' . ASSET_PATH . '/assets/img/smilies/' . rtrim($src_path, "png") . 'png" /></a>';
    }
    return $output;
}

if (!kratos_option('g_gutenberg',false)) {
    // 禁用 Gutenberg 编辑器
    add_filter('use_block_editor_for_post', '__return_false');
    remove_action('wp_enqueue_scripts', 'wp_common_block_scripts_and_styles');

    // 删除前端的block library的css资源，
    add_action('wp_enqueue_scripts', 'remove_block_library_css', 100);
    function remove_block_library_css()
    {
        wp_dequeue_style('wp-block-library');
    }
}

// 文章评论增强
function comment_add_at($comment_text, $comment = '') {  
    if( $comment->comment_parent > 0) {  
        $comment_text = '<span>@' . get_comment_author( $comment->comment_parent ) . '</span> ' . $comment_text;
    }  

    return $comment_text;  
}  
add_filter('comment_text' , 'comment_add_at', 20, 2);

/* recover_comment_fields() 已由 inc/theme-comments.php 里的
   yang_comment_form_fields() 接替（同样的字段顺序，但不再用
   array_shift 硬拿第一个 —— 那样在插件往字段数组前面插东西时会拿错）。 */

$new_meta_boxes =
array(
  "description" => array(
    "name" => "seo_description",
    "std" => "",
    "title" => __( '描述', 'kratos' )
),
  "keywords" => array(
    "name" => "seo_keywords",
    "std" => "",
    "title" => __( '关键词', 'kratos' )
)
);

function seo_meta_boxes() {
    $post_types = get_post_types();
    add_meta_box( 'meta-box-id', __( 'SEO 设置', 'kratos' ), 'post_seo_callback', $post_types );
}
add_action( 'add_meta_boxes', 'seo_meta_boxes' );

function post_seo_callback( $post ) {
    global $new_meta_boxes;

    foreach($new_meta_boxes as $meta_box) {
      $meta_box_value = get_post_meta($post->ID, $meta_box['name'].'_value', true);
  
      if($meta_box_value == "")
        $meta_box_value = $meta_box['std'];
  
      echo '<h3 style="font-size: 14px; padding: 9px 0; margin: 0; line-height: 1.4;">'.$meta_box['title'].'</h3>';
      echo '<textarea cols="60" rows="3" style="width:100%" name="'.$meta_box['name'].'_value">'.$meta_box_value.'</textarea><br/>';
    }
    
    echo '<input type="hidden" name="metaboxes_nonce" id="metaboxes_nonce" value="'.wp_create_nonce( plugin_basename(__FILE__) ).'" />';
}

function wpdocs_save_meta_box( $post_id ) {
    global $new_meta_boxes;
   
    if ( empty( $_POST['metaboxes_nonce'] )||!wp_verify_nonce( $_POST['metaboxes_nonce'], plugin_basename(__FILE__) ))
      return;
     
    if ( !current_user_can( 'edit_posts', $post_id ))
      return;
                 
    foreach($new_meta_boxes as $meta_box) {
      $data = $_POST[$meta_box['name'].'_value'];
  
      if($data == "")
        delete_post_meta($post_id, $meta_box['name'].'_value', get_post_meta($post_id, $meta_box['name'].'_value', true));
      else
        update_post_meta($post_id, $meta_box['name'].'_value', $data);
     }
}
add_action( 'save_post', 'wpdocs_save_meta_box' );