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fix 文章目录层级

This commit is contained in:
浪子 2024-07-07 09:58:14 +08:00
parent e265104e20
commit f449ddf010
1 changed files with 13 additions and 27 deletions
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28
toc.php
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@ -12,52 +12,38 @@ function generate_toc($content) {
</svg> </svg>
</div> </div>
<h2 class="widget-title section-title">文章目录</h2> <h2 class="widget-title section-title">文章目录</h2>
<div class="widget--toc"> <div class="widget--toc"><nav id="TableOfContents">';
<nav id="TableOfContents">
';
// 初始化变量 // 初始化变量
$has_toc = false; $has_toc = false;
// 使用正则表达式提取标题 // 使用正则表达式提取标题
if (preg_match_all('/<h([1-6])>(.*?)<\/h\1>/', $content, $matches, PREG_SET_ORDER)) { if (preg_match_all('/<h([1-6])>(.*?)<\/h\1>/', $content, $matches, PREG_SET_ORDER)) {
$current_level = 0; $current_level = 0;
$last_level = 0;
foreach ($matches as $match) { foreach ($matches as $match) {
$level = intval($match[1]); $level = intval($match[1]);
$title = strip_tags($match[2]); $title = strip_tags($match[2]);
$id = $title; // 保留标题原有格式 $id = $title; // 保留标题原有格式
// 根据标题层级生成嵌套列表
if ($level > $current_level) { if ($level > $current_level) {
$toc.= '<ol>'; $toc.= '<ol>';
} elseif ($level < $current_level) { } elseif ($level < $current_level) {
$toc.= str_repeat('</ol>', $current_level - $level); $toc.= str_repeat('</ol>', $current_level - $level);
} }
$toc.= '<li><a href="#'. htmlspecialchars($id). '">'. htmlspecialchars($title). '</a>'; $toc.= '<li><a href="#'. htmlspecialchars($id). '">'. htmlspecialchars($title). '</a>';
if ($level <= $current_level) {
// 检查下一个标题是否是下一级，如果是则在这里闭合 li，以便包含子 ol if ($current_level > $last_level) {
if ($level >= $current_level) {
$toc.= '</li>'; $toc.= '</li>';
} }
}
$last_level = $current_level;
$current_level = $level; $current_level = $level;
$has_toc = true; $has_toc = true;
} }
// 关闭所有打开的列表标签 // 关闭所有打开的列表标签
if ($current_level > 0) { if ($current_level > 0) {
$toc.= str_repeat('</ol>', $current_level ); $toc.= str_repeat('</ol>', $current_level );
} }
} }
$toc.= '</nav></div></section></aside>';
$toc .= '
</nav>
</div>
</section>
</aside>';
// 如果没有 TOC 内容，则返回空字符串
return $has_toc? $toc : ''; return $has_toc? $toc : '';
} }
?> ?>