/*
 * 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.jdo.tck.util;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintStream;

/**
 * Creates an output stream that delegates to {@link System#out} and to a file output stream. The
 * file name of the file output stream is determined by method {@link
 * BatchTestRunner#getFileName()}.
 */
class ConsoleFileOutput extends OutputStream {

  private final String fileName;
  private final PrintStream systemOut = System.out;
  private FileOutputStream fileOut;

  ConsoleFileOutput() {
    this.fileName = BatchTestRunner.getFileName();
    try {
      this.fileOut = new FileOutputStream(this.fileName);
    } catch (IOException e) {
      System.err.println("Cannot create log file " + this.fileName + ". " + e);
    }
  }

  /*
   * @see java.io.OutputStream#write(int)
   */
  public void write(int b) throws IOException {
    this.systemOut.write(b);
    this.fileOut.write(b);
  }

  /**
   * @see java.io.OutputStream#close()
   */
  @Override
  public void close() throws IOException {
    this.fileOut.close();
    this.systemOut.close();
  }

  /**
   * @see java.io.OutputStream#flush()
   */
  @Override
  public void flush() throws IOException {
    this.systemOut.flush();
    this.fileOut.flush();
  }

  String getFileName() {
    return new File(this.fileName).getName();
  }

  String getDirectory() {
    String result = new File(this.fileName).getParent();
    if (!result.endsWith(File.separator)) result += File.separator;
    return result;
  }
}