package com.atlassian.plugin.servlet.util;
   
   import javax.servlet.ServletOutputStream;
   import javax.servlet.http.Cookie;
   import javax.servlet.http.HttpServletResponse;
   import java.io.ByteArrayOutputStream;
   import java.io.IOException;
   import java.io.PrintWriter;
   import java.util.Collection;
  import java.util.Locale;
  
  /**
  * A {@link javax.servlet.http.HttpServletResponse} that captures its output (in platform specific charset!)
  *
  * @since v4.0
  */
  public class CapturingHttpServletResponse implements HttpServletResponse
  {
      private final ByteArrayOutputStream baos;
      private final ServletOutputStream servletOutputStream;
      private PrintWriter printWriter;
  
      public CapturingHttpServletResponse()
      {
          this.baos = new ByteArrayOutputStream();
          servletOutputStream = new ServletOutputStream() {
  
              @Override
              public void write(final int b) throws IOException
              {
                  baos.write(b);
              }
          };
  
          printWriter = new PrintWriter(servletOutputStream);
      }
  
      @Override
      public ServletOutputStream getOutputStream() throws IOException
      {
          return servletOutputStream;
      }
  
      @Override
      public PrintWriter getWriter() throws IOException
      {
          return printWriter;
      }
  
      @Override
      public String toString()
      {
          return baos.toString();
      }
  
      //===================================================
      @Override
      public void addCookie(final Cookie cookie)
      {
      }
  
      @Override
      public boolean containsHeader(final String name)
      {
          return false;
      }
  
      @Override
      public String encodeURL(final String url)
      {
          return null;
      }
  
      @Override
      public String encodeRedirectURL(final String url)
      {
          return null;
      }
  
      @Override
      public String encodeUrl(final String url)
      {
          return null;
      }
  
      @Override
      public String encodeRedirectUrl(final String url)
      {
          return null;
      }
  
      @Override
      public void sendError(final int sc, final String msg) throws IOException
      {
      }
  
      @Override
      public void sendError(final int sc) throws IOException
      {
     }
 
     @Override
     public void sendRedirect(final String location) throws IOException
     {
     }
 
     @Override
     public void setDateHeader(final String name, final long date)
     {
     }
 
     @Override
     public void addDateHeader(final String name, final long date)
     {
     }
 
     @Override
     public void setHeader(final String name, final String value)
     {
     }
 
     @Override
     public void addHeader(final String name, final String value)
     {
     }
 
     @Override
     public void setIntHeader(final String name, final int value)
     {
     }
 
     @Override
     public void addIntHeader(final String name, final int value)
     {
     }
 
     @Override
     public void setStatus(final int sc)
     {
     }
 
     @Override
     public void setStatus(final int sc, final String sm)
     {
     }
 
     @Override
     public String getCharacterEncoding()
     {
         return null;
     }
 
     @Override
     public void setContentLength(final int len)
     {
     }
 
     @Override
     public void setContentType(final String type)
     {
     }
 
     @Override
     public void setBufferSize(final int size)
     {
     }
 
     @Override
     public int getBufferSize()
     {
         return 0;
     }
 
     @Override
     public void flushBuffer() throws IOException
     {
         printWriter.flush();
     }
 
     @Override
     public void resetBuffer()
     {
     }
 
     @Override
     public boolean isCommitted()
     {
         return false;
     }
 
     @Override
     public void reset()
     {
     }
 
     @Override
     public void setLocale(final Locale loc)
     {
     }
 
     @Override
     public Locale getLocale()
     {
         return null;
     }
 
     // Servlet 3.0 methods
 
     @Override
     public void setCharacterEncoding(String charset)
     {
     }
 
     @Override
     public int getStatus()
     {
         return 0;
     }
 
     @Override
     public String getHeader(String name)
     {
         return null;
     }
 
     @Override
     public Collection<String> getHeaders(String name)
     {
         return null;
     }
 
     @Override
     public Collection<String> getHeaderNames()
     {
         return null;
     }
 
     @Override
     public String getContentType()
     {
         return null;
     }
 }