/*
    * Portions of this software was developed by employees of the National Institute
    * of Standards and Technology (NIST), an agency of the Federal Government and is
    * being made available as a public service. Pursuant to title 17 United States
    * Code Section 105, works of NIST employees are not subject to copyright
    * protection in the United States. This software may be subject to foreign
    * copyright. Permission in the United States and in foreign countries, to the
    * extent that NIST may hold copyright, to use, copy, modify, create derivative
    * works, and distribute this software and its documentation without fee is hereby
   * granted on a non-exclusive basis, provided that this notice and disclaimer
   * of warranty appears in all copies.
   *
   * THE SOFTWARE IS PROVIDED 'AS IS' WITHOUT ANY WARRANTY OF ANY KIND, EITHER
   * EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, ANY WARRANTY
   * THAT THE SOFTWARE WILL CONFORM TO SPECIFICATIONS, ANY IMPLIED WARRANTIES OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND FREEDOM FROM
   * INFRINGEMENT, AND ANY WARRANTY THAT THE DOCUMENTATION WILL CONFORM TO THE
   * SOFTWARE, OR ANY WARRANTY THAT THE SOFTWARE WILL BE ERROR FREE.  IN NO EVENT
   * SHALL NIST BE LIABLE FOR ANY DAMAGES, INCLUDING, BUT NOT LIMITED TO, DIRECT,
   * INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES, ARISING OUT OF, RESULTING FROM,
   * OR IN ANY WAY CONNECTED WITH THIS SOFTWARE, WHETHER OR NOT BASED UPON WARRANTY,
   * CONTRACT, TORT, OR OTHERWISE, WHETHER OR NOT INJURY WAS SUSTAINED BY PERSONS OR
   * PROPERTY OR OTHERWISE, AND WHETHER OR NOT LOSS WAS SUSTAINED FROM, OR AROSE OUT
   * OF THE RESULTS OF, OR USE OF, THE SOFTWARE OR SERVICES PROVIDED HEREUNDER.
   */
  
  package gov.nist.secauto.metaschema.databind.test.util;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.OutputStream;
  
  import edu.umd.cs.findbugs.annotations.NonNull;
  
  public class CloseDetectingInputStream
      extends InputStream {
  
    private final InputStream delegate;
    private boolean closed;
  
    /**
     * Create a new input stream that will proxy calls to the provided
     * {@code delegate}.
     *
     * @param delegate
     *          the underlying input stream
     */
    public CloseDetectingInputStream(@NonNull InputStream delegate) {
      this.delegate = delegate;
    }
  
    /**
     * Indicates if {@link #close()} has been called.
     *
     * @return {@code true} if {@link #close()} has been called, or {@code false}
     *         otherwise
     */
    public boolean isClosed() {
      return closed;
    }
  
    @Override
    public int read() throws IOException {
      return delegate.read();
    }
  
    @Override
    public int read(byte[] byteArray) throws IOException {
      return delegate.read(byteArray);
    }
  
    @Override
    public int read(byte[] byteArray, int off, int len) throws IOException {
      return delegate.read(byteArray, off, len);
    }
  
    @Override
    public byte[] readAllBytes() throws IOException {
      return delegate.readAllBytes();
    }
  
    @Override
    public byte[] readNBytes(int len) throws IOException {
      return delegate.readNBytes(len);
    }
  
    @Override
    public int readNBytes(byte[] byteArray, int off, int len) throws IOException {
      return delegate.readNBytes(byteArray, off, len);
    }
  
    @Override
    public long skip(long numBytes) throws IOException {
      return delegate.skip(numBytes);
    }
  
    @Override
    public int available() throws IOException {
      return delegate.available();
   }
 
   @Override
   public void close() throws IOException {
     delegate.close();
     closed = true;
   }
 
   @Override
   public synchronized void mark(int readlimit) {
     delegate.mark(readlimit);
   }
 
   @Override
   public synchronized void reset() throws IOException {
     delegate.reset();
   }
 
   @Override
   public boolean markSupported() {
     return delegate.markSupported();
   }
 
   @Override
   public long transferTo(OutputStream out) throws IOException {
     return delegate.transferTo(out);
   }
 
   @Override
   public int hashCode() {
     return delegate.hashCode();
   }
 
   @Override
   public boolean equals(Object obj) {
     return delegate.equals(obj);
   }
 
   @Override
   public String toString() {
     return delegate.toString();
   }
 
 }