extractTitle static method

Implementation

static String? extractTitle(String html) {
  // Priority order: OG title, title tag, h1 tags
  final strategies = [
    // Open Graph title
    r'<meta[^>]*property=[\"\x27]og:title[\"\x27][^>]*content=[\"\x27]([^\"\x27]*)[\"\x27]',
    // Title tag
    r'<title[^>]*>([^<]*)</title>',
    // H1 tags
    r'<h1[^>]*>([^<]*)</h1>',
    // Article title patterns
    r'<[^>]*class=[\"\x27][^\"\x27]*title[^\"\x27]*[\"\x27][^>]*>([^<]*)<',
    r'<[^>]*class=[\"\x27][^\"\x27]*headline[^\"\x27]*[\"\x27][^>]*>([^<]*)<',
  ];

  for (final pattern in strategies) {
    final match = RegExp(pattern, caseSensitive: false).firstMatch(html);
    if (match != null) {
      final title = _cleanText(match.group(1) ?? '');
      if (title.isNotEmpty) return title;
    }
  }
  return null;
}