1/*
2 * Copyright (C) 2009 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 dalvik.system;
18
19/**
20 * Utility methods for logging to {@code DalvikHandlers}.
21 *
22 * @hide
23 */
24public final class DalvikLogging {
25    private DalvikLogging() {}
26
27    /**
28     * Returns the short logger tag (up to 23 chars) for the given logger name.
29     * Traditionally loggers are named by fully-qualified Java classes; this
30     * method attempts to return a concise identifying part of such names.
31     */
32    public static String loggerNameToTag(String loggerName) {
33        // Anonymous logger.
34        if (loggerName == null) {
35            return "null";
36        }
37
38        int length = loggerName.length();
39        if (length <= 23) {
40            return loggerName;
41        }
42
43        int lastPeriod = loggerName.lastIndexOf(".");
44        return length - (lastPeriod + 1) <= 23
45                ? loggerName.substring(lastPeriod + 1)
46                : loggerName.substring(loggerName.length() - 23);
47    }
48}
49