decodeBaggage static method

Map<String, String> decodeBaggage(String? header)

Parses a W3C baggage header value.

Entries that are not key=value are skipped rather than throwing — this runs on input from another service, and one malformed entry must not fail the request.

Implementation

static Map<String, String> decodeBaggage(String? header) {
  if (header == null || header.trim().isEmpty) {
    return {};
  }

  final result = <String, String>{};

  for (final entry in header.split(',')) {
    final index = entry.indexOf('=');
    if (index <= 0) {
      continue;
    }

    final key = Uri.decodeQueryComponent(entry.substring(0, index).trim());
    final value = Uri.decodeQueryComponent(entry.substring(index + 1).trim());

    if (key.isNotEmpty) {
      result[key] = value;
    }
  }

  return result;
}