209 lines
7.4 KiB
PHP
209 lines
7.4 KiB
PHP
<?php
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/**
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* layout.php —— 页面公共输出组件
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* 约定：每个页面在引入本文件前需定义全局 $P（资源前缀，根目录为 ''，func/、admin/ 子目录为 '../'）。
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*/
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require_once __DIR__ . '/db.php';
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if (!isset($P)) {
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$P = '';
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}
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/** HTML 转义 */
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function he($s): string
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{
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return htmlspecialchars((string)$s, ENT_QUOTES, 'UTF-8');
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}
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/** 当前 logo 的站点相对路径（后台配置优先，空则默认） */
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function site_logo_rel(): string
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{
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$logo = setting_get('site_logo', '');
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return $logo !== '' ? $logo : 'assets/img/logo.svg';
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}
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/** 输出页面 <head>：标题/favicon/主题防闪烁/公共样式 */
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function layout_head(string $title = ''): void
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{
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global $P;
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$site = setting_get('site_name', '知识导航站');
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$logo = site_logo_rel();
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$fullTitle = ($title !== '' ? $title . ' - ' : '') . $site;
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$prefix = $P;
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echo '<!DOCTYPE html><html lang="zh-CN"><head><meta charset="UTF-8">';
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echo '<meta name="viewport" content="width=device-width, initial-scale=1.0">';
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echo '<meta name="renderer" content="webkit">';
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// 主题防闪烁：在任何样式加载前应用
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echo '<script>(function(){var t;try{t=localStorage.getItem("hp-theme")}catch(e){}';
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echo 'if(!t){t=(window.matchMedia&&window.matchMedia("(prefers-color-scheme: dark)").matches)?"dark":"light"}';
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echo 'document.documentElement.setAttribute("data-theme",t);})();</script>';
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echo '<title>' . he($fullTitle) . '</title>';
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echo '<link rel="icon" href="' . he($prefix . $logo) . '">';
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echo '<link rel="stylesheet" href="' . he($prefix) . 'assets/css/common.css">';
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echo '</head><body>' . "\n";
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}
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/** 昼夜切换浮动按钮 */
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function layout_theme_fab(): void
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{
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echo '<button type="button" class="theme-fab js-theme-btn" title="切换昼夜模式" aria-label="切换昼夜模式">';
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echo '<span class="js-theme-icon"></span></button>' . "\n";
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}
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/** 站内 logo 图片（内容区使用，同 favicon） */
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function layout_logo_img(string $cls = 'logo', string $alt = 'logo'): void
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{
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global $P;
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echo '<img class="' . he($cls) . '" src="' . he($P . site_logo_rel()) . '" alt="' . he($alt) . '">';
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}
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/** 全站页脚 */
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function layout_footer(): void
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{
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global $P;
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$site = setting_get('site_name', '知识导航站');
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$icp = setting_get('icp_no', '');
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$gongan = setting_get('gongan_no', '');
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$gonganLink = setting_get('gongan_link', '');
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$copyright = setting_get('copyright', '');
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$extra = setting_get('footer_text', '');
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echo '<footer class="footer"><div class="wrap footer-inner">';
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if ($icp !== '') {
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echo '<div><a href="https://beian.miit.gov.cn/" target="_blank" rel="noopener noreferrer" style="color:inherit">' . he($icp) . '</a></div>';
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}
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if ($gongan !== '') {
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if ($gonganLink !== '') {
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echo '<div><a href="' . he($gonganLink) . '" target="_blank" rel="noopener noreferrer" style="color:inherit">' . he($gongan) . '</a></div>';
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} else {
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echo '<div>' . he($gongan) . '</div>';
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}
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}
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if ($copyright !== '') {
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echo '<div>' . he(str_replace('{site_name}', $site, $copyright)) . '</div>';
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}
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if ($extra !== '') {
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echo '<div>' . he($extra) . '</div>';
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}
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echo '<div><a class="admin-link" href="' . he($P) . 'admin/login.php">后台管理</a></div>';
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echo '</div></footer>' . "\n";
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}
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/** 读取首页展示的名言（quota.txt 随机一行） */
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function home_quote(): string
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{
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$file = DATA_DIR . '/quota.txt';
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$lines = [];
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if (is_file($file)) {
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$raw = @file($file, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
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if (is_array($raw)) {
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foreach ($raw as $ln) {
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$ln = trim($ln);
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if ($ln !== '' && strpos($ln, '#') !== 0) {
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$lines[] = $ln;
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}
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}
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}
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}
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if (!$lines) {
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return '知识就是力量。';
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}
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return $lines[array_rand($lines)];
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}
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/** 图标值是否属于图片（dataURL / http / 常见图片扩展 / 相对路径） */
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function icon_is_image(string $raw): bool
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{
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$v = trim($raw);
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if ($v === '') {
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return false;
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}
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if (preg_match('/^data:image\//i', $v) || preg_match('#^https?://#i', $v)) {
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return true;
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}
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if (preg_match('/\.(png|jpe?g|gif|svg|webp)(\?|#|$)/i', $v)) {
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return true;
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}
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return $v[0] === '/' || strpos($v, './') === 0 || strpos($v, '../') === 0;
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}
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/** 渲染图标：图片返回 <img>，否则返回转义文本（供前台/后台预览复用） */
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function site_icon(?string $raw, string $alt = 'icon'): string
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{
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$v = trim((string)$raw);
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if ($v === '') {
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return '';
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}
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if (icon_is_image($v)) {
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return '<img class="icon-img" src="' . he($v) . '" alt="' . he($alt) . '" loading="lazy">';
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}
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return he($v);
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}
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/** 默认 CDN IPv4 段库（每行：CIDR + 空格 + 厂商名；# 开头为注释，由后台可覆盖） */
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function default_cdn_ranges(): string
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{
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return implode("\n", [
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'# 内置默认：Cloudflare 官方 IPv4 段（可在后台“CDN IP 段库”补充其它厂商）',
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'103.21.244.0/22 Cloudflare',
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'103.22.200.0/22 Cloudflare',
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'103.31.4.0/22 Cloudflare',
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'104.16.0.0/13 Cloudflare',
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'104.24.0.0/14 Cloudflare',
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'108.162.192.0/18 Cloudflare',
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'131.0.72.0/22 Cloudflare',
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'141.101.64.0/18 Cloudflare',
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'162.158.0.0/15 Cloudflare',
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'172.64.0.0/13 Cloudflare',
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'173.245.48.0/20 Cloudflare',
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'188.114.96.0/20 Cloudflare',
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'190.93.240.0/20 Cloudflare',
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'197.234.240.0/22 Cloudflare',
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'198.41.128.0/17 Cloudflare',
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]);
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}
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/** 当前生效的 CDN 段库文本（后台配置优先，为空回退默认内置列表） */
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function cdn_ranges_text(): string
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{
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$v = setting_get('cdn_ranges', '');
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return $v !== '' ? $v : default_cdn_ranges();
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}
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/** 默认搜索引擎列表（后台未配置时的兜底） */
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function default_search_engines(): array
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{
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return [
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['key' => 'bing', 'name' => 'Bing', 'icon' => 'B', 'url' => 'https://www.bing.com/search?q={kw}'],
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['key' => 'baidu', 'name' => '百度', 'icon' => '度', 'url' => 'https://www.baidu.com/s?wd={kw}'],
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['key' => 'github', 'name' => 'GitHub', 'icon' => 'G', 'url' => 'https://github.com/search?q={kw}'],
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['key' => 'google', 'name' => 'Google', 'icon' => 'G', 'url' => 'https://www.google.com/search?q={kw}'],
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];
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}
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/** 读取当前生效的搜索引擎列表（优先后台配置，无效或为空回退默认） */
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function search_engines(): array
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{
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$raw = setting_get('search_engines', '');
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if ($raw === '') {
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return default_search_engines();
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}
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$arr = json_decode($raw, true);
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if (!is_array($arr) || count($arr) === 0) {
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return default_search_engines();
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}
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$out = [];
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foreach ($arr as $i => $e) {
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if (!is_array($e)) continue;
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$name = trim((string)($e['name'] ?? ''));
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$url = trim((string)($e['url'] ?? ''));
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$icon = trim((string)($e['icon'] ?? ''));
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if ($name === '' || $url === '' || strpos($url, '{kw}') === false) continue;
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$key = trim((string)($e['key'] ?? ''));
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if ($key === '') {
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$key = 'e' . ((int)$i + 1);
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}
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$out[] = ['key' => $key, 'name' => $name, 'icon' => ($icon !== '' ? $icon : 'S'), 'url' => $url];
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}
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return $out !== [] ? $out : default_search_engines();
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}
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