/*
    * 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.
   */
  package org.apache.maven.surefire.api.report;
  
  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) {}
     }
 }