wordpress-theme-aksrt/inc/helpers/comments/content.php

<?php
/**
 * Comment content filters — legacy-compatible shortcodes.
 *
 * Supports [g=key] GIF smilies, [img=url], [code]...[/code].
 *
 * @package AKSRT
 */

defined('ABSPATH') || exit;

if (!function_exists('aksrt_comment_smilie_keys')) :
	/**
	 * Canonical legacy smilie keys (filename without .gif).
	 *
	 * @return array<int,string>
	 */
	function aksrt_comment_smilie_keys(): array {
		return [
			'aoman', 'baiyan', 'bishi', 'bizui', 'cahan', 'ciya', 'dabing', 'daku', 'deyi', 'doge',
			'fadai', 'fanu', 'fendou', 'ganga', 'guzhang', 'haixiu', 'hanxiao', 'zuohengheng', 'zhuakuang',
			'zhouma', 'zhemo', 'zhayanjian', 'zaijian', 'yun', 'youhengheng', 'yiwen', 'yinxian', 'xu',
			'xieyanxiao', 'xiaoku', 'xiaojiujie', 'xia', 'wunai', 'wozuimei', 'weixiao', 'weiqu', 'tuosai',
			'tu', 'touxiao', 'tiaopi', 'shui', 'se', 'saorao', 'qiudale', 'qinqin', 'qiaoda', 'piezui',
			'penxue', 'nanguo', 'liulei', 'liuhan', 'lenghan', 'leiben', 'kun', 'kuaikule', 'ku', 'koubi',
			'kelian', 'keai', 'jingya', 'jingxi', 'jingkong', 'jie', 'huaixiao', 'haqian', 'aini', 'OK',
			'qiang', 'quantou', 'shengli', 'woshou', 'gouyin', 'baoquan', 'aixin', 'bangbangtang',
			'xiaoyanger', 'xigua', 'hexie', 'pijiu', 'lanqiu', 'juhua', 'hecai', 'haobang', 'caidao',
			'baojin', 'chi', 'dan', 'kulou', 'shuai', 'shouqiang', 'yangtuo', 'youling',
		];
	}
endif;

if (!function_exists('aksrt_comment_smilie_map')) :
	/**
	 * Smilie key => URL map (GIF under assets/img/smilies).
	 *
	 * @return array<string,string>
	 */
	function aksrt_comment_smilie_map(): array {
		static $map = null;
		if (is_array($map)) {
			return $map;
		}
		$base = trailingslashit(get_template_directory_uri()) . 'assets/img/smilies/';
		$map  = [];
		foreach (aksrt_comment_smilie_keys() as $key) {
			$map[$key] = $base . rawurlencode($key) . '.gif';
		}
		return $map;
	}
endif;

if (!function_exists('aksrt_comment_smilies_base_uri')) :
	/**
	 * Base URI for smilie GIFs (localized to JS).
	 */
	function aksrt_comment_smilies_base_uri(): string {
		return trailingslashit(get_template_directory_uri()) . 'assets/img/smilies/';
	}
endif;

if (!function_exists('aksrt_render_comment_smilie')) :
	/**
	 * Render a single [g=key] smilie as <img class="smilie-icon">.
	 */
	function aksrt_render_comment_smilie(string $key): string {
		// Preserve case for OK.gif; sanitize other keys.
		$raw = trim($key);
		if ($raw === '') {
			return '';
		}
		$lookup = $raw === 'OK' ? 'OK' : sanitize_key($raw);
		// Allow original casing match for files like OK.gif.
		$map = aksrt_comment_smilie_map();
		if (!isset($map[$lookup]) && isset($map[$raw])) {
			$lookup = $raw;
		}
		if (!isset($map[$lookup])) {
			// Fallback: try case-insensitive.
			foreach ($map as $k => $url) {
				if (strcasecmp((string) $k, $raw) === 0) {
					$lookup = (string) $k;
					break;
				}
			}
		}
		if (!isset($map[$lookup])) {
			return '[g=' . esc_html($raw) . ']';
		}
		$label = esc_attr('[' . $lookup . ']');
		return '<img' . aksrt_get_lazy_attr('lazy_comment', (string) $map[$lookup], 'smilie-icon', aksrt_get_lazy_thumb('sm'))
			. ' alt="' . $label . '" title="' . $label . '" width="30" height="30" decoding="async" data-smilie="' . esc_attr($lookup) . '">';
	}
endif;

if (!function_exists('aksrt_render_comment_content')) :
	/**
	 * Filter comment body: smilies, images, code blocks (legacy parity).
	 */
	function aksrt_render_comment_content(string $content): string {
		// [img=url]
		$rendered = preg_replace_callback(
			'/\[img=(https?:\/\/[^\s\[\]]+)\]/i',
			static function (array $matches): string {
				return '<img' . aksrt_get_lazy_attr('lazy_comment', (string) $matches[1], 'box-img comment-inline-img', aksrt_get_lazy_thumb('lg'))
					. ' alt="' . esc_attr__('评论图片', 'aksrt') . '" decoding="async">';
			},
			$content
		);
		// [code]...[/code]
		$rendered = str_replace(
			['[code]', '[/code]'],
			['<pre class="comment-code"><code>', '</code></pre>'],
			(string) $rendered
		);
		// [link=url target=_blank]text[/link] / [link=url]text[/link]
		$rendered = preg_replace(
			'/\[link=(https?:\/\/[^\s\[\]]+) target=_blank\]([^\[]*)\[\/link\]/i',
			'<a href="$1" target="_blank" rel="nofollow">$2</a>',
			(string) $rendered
		);
		$rendered = preg_replace(
			'/\[link=(https?:\/\/[^\s\[\]]+)\]([^\[]*)\[\/link\]/i',
			'<a href="$1" rel="nofollow">$2</a>',
			(string) $rendered
		);
		// [g=key]
		$rendered = preg_replace_callback(
			'/\[g=([^\]]+)\]/i',
			static function (array $matches): string {
				return aksrt_render_comment_smilie(trim((string) $matches[1]));
			},
			(string) $rendered
		);

		$allowed = wp_kses_allowed_html('post');
		if (!isset($allowed['img'])) {
			$allowed['img'] = [];
		}
		$allowed['img'] = array_merge($allowed['img'], [
			'class'     => true,
			'src'       => true,
			'alt'       => true,
			'title'     => true,
			'width'     => true,
			'height'    => true,
			'data-src'  => true,
			'decoding'  => true,
			'data-smilie' => true,
			'data-src'  => true,
		]);
		$allowed['pre']  = array_merge($allowed['pre'] ?? [], ['class' => true]);
		$allowed['code'] = $allowed['code'] ?? [];

		return wp_kses((string) $rendered, $allowed);
	}
endif;