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      1 /*
      2  * Copyright (C) 2012 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 libcore.io;
     18 
     19 public final class DropBox {
     20 
     21     /**
     22      * Hook for customizing how events are reported.
     23      */
     24     private static volatile Reporter REPORTER = new DefaultReporter();
     25 
     26     /**
     27      * Used to replace default Reporter for logging events. Must be non-null.
     28      */
     29     public static void setReporter(Reporter reporter) {
     30         if (reporter == null) {
     31             throw new NullPointerException("reporter == null");
     32         }
     33         REPORTER = reporter;
     34     }
     35 
     36     /**
     37      * Returns non-null Reporter.
     38      */
     39     public static Reporter getReporter() {
     40         return REPORTER;
     41     }
     42 
     43     /**
     44      * Interface to allow customization of reporting behavior.
     45      */
     46     public static interface Reporter {
     47         public void addData(String tag, byte[] data, int flags);
     48         public void addText(String tag, String data);
     49     }
     50 
     51     /**
     52      * Default Reporter which reports events to the log.
     53      */
     54     private static final class DefaultReporter implements Reporter {
     55 
     56         public void addData(String tag, byte[] data, int flags) {
     57             System.out.println(tag + ": " + Base64.encode(data));
     58         }
     59 
     60         public void addText(String tag, String data) {
     61             System.out.println(tag + ": " + data);
     62         }
     63     }
     64 
     65     public static void addData(String tag, byte[] data, int flags) {
     66         getReporter().addData(tag, data, flags);
     67     }
     68 
     69     public static void addText(String tag, String data) {
     70         getReporter().addText(tag, data);
     71     }
     72 }
     73