fromXml method

LSLStreamInfoWithMetadata fromXml(
  1. String xml
)

Implementation

LSLStreamInfoWithMetadata fromXml(String xml) {
  final Pointer<Char> xmlPtr = xml
      .toNativeUtf8(allocator: allocate)
      .cast<Char>();
  final lsl_streaminfo streamInfo = lsl_streaminfo_from_xml(xmlPtr);
  if (streamInfo.isNullPointer) {
    throw LSLException('Failed to create stream info from XML');
  }
  // now we have to check the "name" field. If it starts with "(invalid: "
  // then there was an error, unfortunately LSL doesn't return a null pointer
  // on exception in the c++ code, so we have to check the name field
  final Pointer<Char> namePtr = lsl_get_name(streamInfo);
  if (namePtr.isNullPointer) {
    lsl_destroy_streaminfo(streamInfo);
    throw LSLException('Failed to create stream info from XML: $xml');
  }
  final String name = namePtr.cast<Utf8>().toDartString();
  if (name.startsWith('(invalid: ')) {
    lsl_destroy_streaminfo(streamInfo);
    throw LSLException(
      'Failed to create stream info from XML: $xml, error: $name',
    );
  }
  return LSLStreamInfoWithMetadata.fromStreamInfo(streamInfo);
}