layerConnection function

List<RedactionMatch> layerConnection(String text, RedactionConfig cfg)

Finds connection-string password spans in text.

Pure function; URLs without a user:password@ authority yield nothing.

Implementation

List<RedactionMatch> layerConnection(String text, RedactionConfig cfg) {
  if (text.isEmpty || !text.contains('://')) return const [];
  final matches = <RedactionMatch>[];
  for (final m in _connectionUrl.allMatches(text)) {
    // dart:core Match has no group offsets, so locate the password as the
    // run between the user separator (first ':' after '://') and the last
    // '@' of the matched segment (the regex guarantees both exist).
    final segment = text.substring(m.start, m.end);
    final userSep = segment.indexOf(':', segment.indexOf('://') + 3);
    final hostSep = segment.lastIndexOf('@');
    if (userSep < 0 || hostSep <= userSep) continue;
    matches.add(
      RedactionMatch(
        start: m.start + userSep + 1,
        end: m.start + hostSep,
        layer: RedactionLayer.connection,
        kindLabel: connectionPasswordLabel,
      ),
    );
  }
  return matches;
}