content: /*
   * Copyright (C) 2018 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package android.net.util;
  
  import java.util.Collections;
  import java.util.HashSet;
  import java.util.Set;
  import java.util.StringJoiner;
  
  
  /**
   * @hide
   */
  public class InterfaceSet {
      public final Set<String> ifnames;
  
      public InterfaceSet(String... names) {
          final Set<String> nameSet = new HashSet<>();
          for (String name : names) {
              if (name != null) nameSet.add(name);
          }
          ifnames = Collections.unmodifiableSet(nameSet);
      }
  
      @Override
      public String toString() {
          final StringJoiner sj = new StringJoiner(",", "[", "]");
          for (String ifname : ifnames) sj.add(ifname);
          return sj.toString();
      }
  
      @Override
      public boolean equals(Object obj) {
          return obj != null
                  && obj instanceof InterfaceSet
                  && ifnames.equals(((InterfaceSet)obj).ifnames);
      }
  }
  