Ipv4Address.fromString constructor

Ipv4Address.fromString(
  1. String? value, {
  2. String separator = '.',
})

Implementation

factory Ipv4Address.fromString(
  final String? value, {
  final String separator = '.',
}) {
  if (value == null || value.isEmpty) {
    throw ArgumentError('invalidIpAddress');
  }

  List<String> parts = value.split(separator);

  if (parts.length != 4) {
    throw ArgumentError('invalidIpAddress');
  }

  List<int> ocs = <int>[];

  for (final String part in parts) {
    int? octet = int.tryParse(part);
    if (octet == null || octet < 0 || octet > 255) {
      throw ArgumentError('invalidIpAddress');
    }
    ocs.add(octet);
  }

  return Ipv4Address.fromDecimals(ocs[0], ocs[1], ocs[2], ocs[3]);
}