package org.apache.maven.surefire.api.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 javax.annotation.Nonnull;
  
  import java.io.IOException;
  import java.io.OutputStream;
  import java.io.PrintStream;
  
  import static java.lang.System.setErr;
  import static java.lang.System.setOut;
  import static org.apache.maven.surefire.api.report.TestOutputReportEntry.stdErr;
  import static org.apache.maven.surefire.api.report.TestOutputReportEntry.stdErrln;
  import static org.apache.maven.surefire.api.report.TestOutputReportEntry.stdOut;
  import static org.apache.maven.surefire.api.report.TestOutputReportEntry.stdOutln;
  
  /**
   * Deals with system.out/err.
   * <br>
   */
  public final class ConsoleOutputCapture
  {
      public static void startCapture( TestOutputReceiver<OutputReportEntry> target )
      {
          setOut( new ForwardingPrintStream( true, target ) );
          setErr( new ForwardingPrintStream( false, target ) );
      }
  
      private static final class ForwardingPrintStream
          extends PrintStream
      {
          private final boolean isStdout;
          private final TestOutputReceiver<OutputReportEntry> target;
  
          ForwardingPrintStream( boolean stdout, TestOutputReceiver<OutputReportEntry> target )
          {
              super( new NullOutputStream() );
              isStdout = stdout;
              this.target = target;
          }
  
          @Override
          public void write( @Nonnull byte[] buf, int off, int len )
          {
              String log = new String( buf, off, len );
              target.writeTestOutput( isStdout ? stdOut( log ) : stdErr( log ) );
          }
  
          public void write( @Nonnull byte[] b )
              throws IOException
          {
              write( b, 0, b.length );
          }
  
          @Override
          public void write( int b )
          {
              try
              {
                  write( new byte[] { (byte) b } );
              }
              catch ( IOException e )
              {
                  setError();
              }
          }
  
          @Override
          public void println( boolean x )
          {
              println( x ? "true" : "false" );
          }
  
          @Override
          public void println( char x )
          {
              println( String.valueOf( x ) );
          }
  
          @Override
          public void println( int x )
         {
             println( String.valueOf( x ) );
         }
 
         @Override
         public void println( long x )
         {
             println( String.valueOf( x ) );
         }
 
         @Override
         public void println( float x )
         {
             println( String.valueOf( x ) );
         }
 
         @Override
         public void println( double x )
         {
             println( String.valueOf( x ) );
         }
 
         @Override
         public void println( @Nonnull char[] x )
         {
             println( String.valueOf( x ) );
         }
 
         @Override
         public void println( Object x )
         {
             println( String.valueOf( x ) );
         }
 
         @Override
         public void println( String s )
         {
             String log = s == null ? "null" : s;
             target.writeTestOutput( isStdout ? stdOutln( log ) : stdErrln( log ) );
         }
 
         @Override
         public void println()
         {
             target.writeTestOutput( isStdout ? stdOutln( "" ) : stdErrln( "" ) );
         }
 
         @Override
         public void print( boolean x )
         {
             print( x ? "true" : "false" );
         }
 
         @Override
         public void print( char x )
         {
             print( String.valueOf( x ) );
         }
 
         @Override
         public void print( int x )
         {
             print( String.valueOf( x ) );
         }
 
         @Override
         public void print( long x )
         {
             print( String.valueOf( x ) );
         }
 
         @Override
         public void print( float x )
         {
             print( String.valueOf( x ) );
         }
 
         @Override
         public void print( double x )
         {
             print( String.valueOf( x ) );
         }
 
         @Override
         public void print( @Nonnull char[] x )
         {
             print( String.valueOf( x ) );
         }
 
         @Override
         public void print( Object x )
         {
             print( String.valueOf( x ) );
         }
 
         @Override
         public void print( String s )
         {
             String log = s == null ? "null" : s;
             target.writeTestOutput( isStdout ? stdOut( log ) : stdErr( log ) );
         }
 
         @Override
         public PrintStream append( CharSequence csq )
         {
             print( csq == null ? "null" : csq.toString() );
             return this;
         }
 
         @Override
         public PrintStream append( CharSequence csq, int start, int end )
         {
             CharSequence s = csq == null ? "null" : csq;
             print( s.subSequence( start, end ).toString() );
             return this;
         }
 
         @Override
         public PrintStream append( char c )
         {
             print( c );
             return this;
         }
 
         @Override
         public void close()
         {
         }
 
         @Override
         public void flush()
         {
         }
     }
 
     private static final class NullOutputStream
             extends OutputStream
     {
         @Override
         public void write( int b )
         {
         }
     }
 }