package org.apache.maven.surefire.report;
   
   /*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  
  
  import java.io.PrintWriter;
  import java.io.StringWriter;
  import org.apache.maven.surefire.util.internal.StringUtils;
  
  /**
   * Write the trace out for a POJO test. Java 1.3 compatible.
   *
   * @author <a href="mailto:brett@apache.org">Brett Porter</a>
   * @noinspection ThrowableResultOfMethodCallIgnored
   */
  public class LegacyPojoStackTraceWriter
      implements StackTraceWriter
  {
      private static final int MAX_LINE_LENGTH = 77;
  
      private final Throwable t;
  
      private final String testClass;
  
      private final String testMethod;
  
      public LegacyPojoStackTraceWriter( String testClass, String testMethod, Throwable t )
      {
          this.testClass = testClass;
          this.testMethod = testMethod;
          this.t = t;
      }
  
      public String writeTraceToString()
      {
          StringWriter w = new StringWriter();
          if ( t != null )
          {
              t.printStackTrace( new PrintWriter( w ) );
              w.flush();
          }
          return w.toString();
      }
  
      public String smartTrimmedStackTrace()
      {
          StringBuilder result = new StringBuilder();
          result.append( testClass );
          result.append( "#" );
          result.append( testMethod );
          SafeThrowable throwable = getThrowable();
          if ( throwable.getTarget() instanceof AssertionError )
          {
              result.append( " " );
              result.append( getTruncatedMessage( throwable.getMessage(), MAX_LINE_LENGTH - result.length() ) );
          }
          else
          {
              Throwable target = throwable.getTarget();
              if ( target != null )
              {
                  result.append( " " );
                  result.append( target.getClass().getSimpleName() );
                  result.append( getTruncatedMessage( throwable.getMessage(), MAX_LINE_LENGTH - result.length() ) );
              }
          }
          return result.toString();
      }
  
      private static String getTruncatedMessage( String msg, int i )
      {
          if ( i < 0 )
          {
              return "";
          }
          if ( msg == null )
          {
              return "";
          }
          String substring = msg.substring( 0, Math.min( i, msg.length() ) );
          if ( i < msg.length() )
          {
             return " " + substring + "...";
         }
         else
         {
             return " " + substring;
         }
     }
 
 
     public String writeTrimmedTraceToString()
     {
         String text = writeTraceToString();
 
         String marker = "at " + testClass + "." + testMethod;
 
         String[] lines = StringUtils.split( text, "\n" );
         int lastLine = lines.length - 1;
         int causedByLine = -1;
         // skip first
         for ( int i = 1; i < lines.length; i++ )
         {
             String line = lines[i].trim();
             if ( line.startsWith( marker ) )
             {
                 lastLine = i;
             }
             else if ( line.startsWith( "Caused by" ) )
             {
                 causedByLine = i;
                 break;
             }
         }
 
         StringBuilder trace = new StringBuilder();
         for ( int i = 0; i <= lastLine; i++ )
         {
             trace.append( lines[i] );
             trace.append( "\n" );
         }
 
         if ( causedByLine != -1 )
         {
             for ( int i = causedByLine; i < lines.length; i++ )
             {
                 trace.append( lines[i] );
                 trace.append( "\n" );
             }
         }
         return trace.toString();
     }
 
     public SafeThrowable getThrowable()
     {
         return new SafeThrowable( t );
     }
 }