1/*
2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24import java.util.Arrays;
25import java.util.Locale;
26import java.util.Set;
27import java.util.TreeSet;
28import java.util.stream.Collectors;
29
30class GetAvailableLocales {
31
32    public static void main(String[] args) {
33        Set<String> expected = Set.of(args);
34        Set<String> actual =
35            Arrays.stream(Locale.getAvailableLocales())
36                  // "(root)" for Locale.ROOT rather than ""
37                  .map(loc -> loc.equals(Locale.ROOT) ? "(root)" : loc.toString())
38                  .collect(Collectors.toSet());
39
40        if (!expected.equals(actual)) {
41            diff(expected, actual);
42            System.exit(1);
43        }
44    }
45
46    private static void diff(Set<String> expected, Set<String> actual) {
47        Set<String> s1 = new TreeSet<>(expected);
48        s1.removeAll(actual);
49        if (!s1.isEmpty()) {
50            System.out.println("\tMissing locale(s): " + s1);
51        }
52        Set<String> s2 = new TreeSet<>(actual);
53        s2.removeAll(expected);
54        if (!s2.isEmpty()) {
55            System.out.println("\tExtra locale(s): " + s2);
56        }
57    }
58}
59