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1   /**
2    *
3    * Copyright 2003-2004 The Apache Software Foundation
4    *
5    *  Licensed under the Apache License, Version 2.0 (the "License");
6    *  you may not use this file except in compliance with the License.
7    *  You may obtain a copy of the License at
8    *
9    *     http://www.apache.org/licenses/LICENSE-2.0
10   *
11   *  Unless required by applicable law or agreed to in writing, software
12   *  distributed under the License is distributed on an "AS IS" BASIS,
13   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   *  See the License for the specific language governing permissions and
15   *  limitations under the License.
16   */
17  package org.apache.geronimo.system.main;
18  
19  import java.util.ArrayList;
20  
21  /**
22   * @version $Rev: 355877 $ $Date: 2005-12-10 18:48:27 -0800 (Sat, 10 Dec 2005) $
23   */
24  public class ExceptionUtil {
25  
26      private static final String[] excludedPackages = {
27          "org.apache.geronimo.gbean.jmx.", "mx4j.", "net.sf.cglib.reflect.", "sun.reflect."
28      };
29  
30      private static final String[] excludedStrings = {
31          "$$EnhancerByCGLIB$$","$$FastClassByCGLIB$$"
32      };
33  
34      public static void trimStackTrace(Throwable t) {
35          if (t == null) {
36              return;
37          }
38  
39          StackTraceElement[] trace = t.getStackTrace();
40          ArrayList list = new ArrayList();
41  
42          boolean skip = true;
43  
44          int i = 0;
45  
46          // If the start of the stack trace is something
47          // on the exclude list, don't exclude it.
48          for (; i < trace.length && skip; i++) {
49              skip = skip && isExcluded(trace[i].getClassName());
50          }
51          list.add(trace[i-1]);
52  
53  
54          for (; i < trace.length; i++) {
55              if ( !isExcluded(trace[i].getClassName()) ){
56                  list.add(trace[i]);
57              }
58          }
59  
60          t.setStackTrace((StackTraceElement[]) list.toArray(new StackTraceElement[0]));
61          trimStackTrace(t.getCause());
62      }
63  
64      private static boolean isExcluded(String className) {
65          for (int j = 0; j < excludedPackages.length; j++) {
66              if (className.startsWith(excludedPackages[j])) {
67                  return true;
68              }
69          }
70          for (int j = 0; j < excludedStrings.length; j++) {
71              if (className.indexOf(excludedStrings[j]) != -1) {
72                  return true;
73              }
74          }
75          return false;
76      }
77  }