1 /*
2  * Copyright (C) 2019 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 
17 package com.android.server.soundtrigger_middleware;
18 
19 import java.util.regex.Pattern;
20 
21 /**
22  * Utilities for representing UUIDs as strings.
23  *
24  * @hide
25  */
26 public class UuidUtil {
27     /**
28      * Regex pattern that can be used to validate / extract the various fields of a string-formatted
29      * UUID.
30      */
31     static final Pattern PATTERN = Pattern.compile("^([a-fA-F0-9]{8})-" +
32             "([a-fA-F0-9]{4})-" +
33             "([a-fA-F0-9]{4})-" +
34             "([a-fA-F0-9]{4})-" +
35             "([a-fA-F0-9]{2})" +
36             "([a-fA-F0-9]{2})" +
37             "([a-fA-F0-9]{2})" +
38             "([a-fA-F0-9]{2})" +
39             "([a-fA-F0-9]{2})" +
40             "([a-fA-F0-9]{2})$");
41 
42     /** Printf-style pattern for formatting the various fields of a UUID as a string. */
43     static final String FORMAT = "%08x-%04x-%04x-%04x-%02x%02x%02x%02x%02x%02x";
44 }
45