* 从 HTML 中解析 favicon URL
(html: string, origin: string)
| 393 | * 从 HTML 中解析 favicon URL |
| 394 | */ |
| 395 | private parseFaviconFromHtml(html: string, origin: string): string { |
| 396 | // 匹配 <link rel="icon" href="..."> 或 <link rel="shortcut icon" href="..."> |
| 397 | const linkRegex = /<link[^>]*rel=["'](?:shortcut\s+)?icon["'][^>]*href=["']([^"']+)["'][^>]*>/gi |
| 398 | const altRegex = /<link[^>]*href=["']([^"']+)["'][^>]*rel=["'](?:shortcut\s+)?icon["'][^>]*>/gi |
| 399 | |
| 400 | const match = linkRegex.exec(html) || altRegex.exec(html) |
| 401 | if (match?.[1]) { |
| 402 | const href = match[1] |
| 403 | // 处理相对路径 |
| 404 | if (href.startsWith('//')) { |
| 405 | return `https:${href}` |
| 406 | } else if (href.startsWith('/')) { |
| 407 | return `${origin}${href}` |
| 408 | } else if (href.startsWith('http')) { |
| 409 | return href |
| 410 | } else { |
| 411 | return `${origin}/${href}` |
| 412 | } |
| 413 | } |
| 414 | |
| 415 | return '' |
| 416 | } |
| 417 | |
| 418 | /** |
| 419 | * HTTP GET 请求，返回文本内容 |