1/*
2 * Copyright (C) 2018 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.net.util;
18
19import java.util.Collections;
20import java.util.HashSet;
21import java.util.Set;
22import java.util.StringJoiner;
23
24
25/**
26 * @hide
27 */
28public class InterfaceSet {
29    public final Set<String> ifnames;
30
31    public InterfaceSet(String... names) {
32        final Set<String> nameSet = new HashSet<>();
33        for (String name : names) {
34            if (name != null) nameSet.add(name);
35        }
36        ifnames = Collections.unmodifiableSet(nameSet);
37    }
38
39    @Override
40    public String toString() {
41        final StringJoiner sj = new StringJoiner(",", "[", "]");
42        for (String ifname : ifnames) sj.add(ifname);
43        return sj.toString();
44    }
45
46    @Override
47    public boolean equals(Object obj) {
48        return obj != null
49                && obj instanceof InterfaceSet
50                && ifnames.equals(((InterfaceSet)obj).ifnames);
51    }
52}
53