buildSrc/src/main/java/org/apache/lucene/gradle/StdOutTeeWriter.java

/*
 * 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.lucene.gradle;

import java.io.IOException;
import java.io.PrintStream;
import java.io.Writer;

class StdOutTeeWriter extends Writer {
   private final Writer delegate;
   private final PrintStream out = System.out;

   public StdOutTeeWriter(Writer delegate) {
      this.delegate = delegate;
   }

   @Override
   public void write(int c) throws IOException {
      delegate.write(c);
      out.write(c);
   }

   @Override
   public void write(char[] cbuf) throws IOException {
      delegate.write(cbuf);
      out.print(cbuf);
   }

   @Override
   public void write(String str) throws IOException {
      delegate.write(str);
      out.print(str);
   }

   @Override
   public void write(String str, int off, int len) throws IOException {
      delegate.write(str, off, len);
      out.append(str, off, len);
   }

   @Override
   public Writer append(CharSequence csq) throws IOException {
      delegate.append(csq);
      out.append(csq);
      return this;
   }

   @Override
   public Writer append(CharSequence csq, int start, int end) throws IOException {
      delegate.append(csq, start, end);
      out.append(csq, start, end);
      return this;
   }

   @Override
   public Writer append(char c) throws IOException {
      delegate.append(c);
      out.append(c);
      return this;
   }

   @Override
   public void write(char[] cbuf, int off, int len) throws IOException {
      delegate.write(cbuf, off, len);
      out.print(new String(cbuf, off, len));
   }

   @Override
   public void flush() throws IOException {
      delegate.flush();
      out.flush();
   }

   @Override
   public void close() throws IOException {
      delegate.close();
      // Don't close the actual output.
   }
}