/*This file is part of JHttpServer.This package is free software; you can redistribute it and/or modifyit under the terms of the GNU General Public License as published bythe Free Software Foundation; either version 2 of the License, or(at your option) any later version.JHttpServer is distributed in the hope that it will be useful,but WITHOUT ANY WARRANTYge; without even the implied warranty ofMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See theGNU General Public License for more details.You should have received a copy of the GNU General Public Licensealong with JHttpServer; if not, write to the Free SoftwareFoundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA*/// Title :        HttpServletResponseImpl.java// Version :      0.92// Copyright :    Copyright (c) 2001// Author :       Florent CUETO (fcueto@wanadoo.fr)// Description :  Basic implementation of HttpServletResponsepackage jhttpserver;import javax.servlet.*;import javax.servlet.http.*;import java.io.*;import java.util.*;import java.net.*;import java.text.SimpleDateFormat;public class HttpServletResponseImpl implements HttpServletResponse{  private Hashtable headers;  private String contentType = "text/plain";  private Socket socket;  //private OutputStream os;  private BufferedOutputStream os;  private ServletOutputStream sos = null;  private PrintWriter pw = null;  private String protocol;  private Locale locale;  private String charset;  private boolean headersWrited = false;  private int contentLength = -1;  private JHttpServer server;  public static SimpleDateFormat sdf = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss 'GMT'", Locale.ENGLISH);  private int statusCode;  private String statusMessage;  public HttpServletResponseImpl()  {    super();    headers = new Hashtable();    locale = Locale.FRENCH;    charset = "iso8859-1";    statusCode = 200;    statusMessage = "OK";  }  public void setStatus(int sc, String sm)  {    statusCode = sc;    statusMessage = sm;  }  public void setStatus(int sc)  {    statusCode = sc;    statusMessage = "";  }  public void setIntHeader(String name, int value)  {    headers.put(name, Integer.toString(value));  }  public void setHeader(String name, String value)  {    headers.put(name, value);  }  public void setDateHeader(String name, long date)  {    headers.put(name, HttpServletResponseImpl.sdf.format(new Date(date)));  }  public void sendRedirect(String location) throws IOException  {    statusCode = 301;    statusMessage = "Moved Permanently";    if (headersWrited) return;    writeString(protocol + " " + statusCode + " " + statusMessage);    writeString("\r\n");    writeString("Date: " + sdf.format(new Date()));    writeString("\r\n");    writeString("Server: " + server.getServerInfo());    writeString("\r\n");    writeString("Location: " + location);    writeString("\r\n");    writeString("Connection: close"); // TO DO : check this header    writeString("\r\n");    writeString("Content-Type: " + contentType);    writeString("\r\n");    writeString("\r\n");    headersWrited = true;  }  public void sendError(int sc) throws IOException  {    sendError(sc, "");  }  public void sendError(int sc, String msg) throws IOException  {    if (headersWrited) return;    writeString(protocol + " " + sc + " " + msg);    writeString("\r\n");    writeString("Date: " + sdf.format(new Date()));    writeString("\r\n");    writeString("Server: " + server.getServerInfo());    writeString("\r\n");    writeString("Connection: close"); // TO DO : check this header    writeString("\r\n");    writeString("Content-Type: " + contentType);    writeString("\r\n");    writeString("\r\n");    headersWrited = true;  }  public String encodeURL(String url)  {    return(URLEncoder.encode(url));  }  public String encodeUrl(String url)  {    return(encodeURL(url));  }  public String encodeRedirectURL(String url)  {    return(URLEncoder.encode(url));  }  public String encodeRedirectUrl(String url)  {    return(encodeRedirectURL(url));  }  public boolean containsHeader(String name)  {    return headers.contains(name);  }  public void addIntHeader(String name, int value)  {    headers.put(name, Integer.toString(value));  }  public void addHeader(String name, String value)  {    headers.put(name, value);  }  public void addDateHeader(String name, long date)  {    headers.put(name, HttpServletResponseImpl.sdf.format(new Date(date)));  }  public void addCookie(Cookie cookie)  {  }  public void setLocale(Locale loc)  {    this.locale = loc;  }  public void setContentType(String type)  {    contentType = type;  }  public void setContentLength(int len)  {    contentLength = len;  }  public void setBufferSize(int size)  {  }  public void reset()  {  }  public boolean isCommitted()  {    return(true);  }  public PrintWriter getWriter() throws IOException  {    // On ecrit les headers    writeHead();    //    pw = new PrintWriter(os);    return(pw);  }  public ServletOutputStream getOutputStream() throws IOException  {    // On ecrit les headers    writeHead();    //    sos = new ServletOutputStreamImpl(os);    return(sos);  }  public Locale getLocale()  {    return(locale);  }  public String getCharacterEncoding()  {    return(charset);  }  public int getBufferSize()  {    return(0);  }  public void flushBuffer() throws IOException  {    if (sos != null)    {      sos.flush();      return;    }    if (pw != null)    {      pw.flush();      return;    }    os.flush();  }  void setOutputStream(BufferedOutputStream os)  {    this.os = os;  }  Socket getSocket()  {    return socket;  }  void setSocket(Socket socket)  {    this.socket = socket;  }  void writeHead()  {    if (headersWrited) return;    writeString(protocol + " " + statusCode + " " + statusMessage);    writeString("\r\n");    writeString("Date: " + sdf.format(new Date()));    writeString("\r\n");    writeString("Server: " + server.getServerInfo());    writeString("\r\n");    writeString("Connection: close"); // TO DO : check this header    writeString("\r\n");    writeString("Content-Type: " + contentType);    writeString("\r\n");    // Write the custom headers    for (Enumeration e = headers.keys(); e.hasMoreElements(); )    {      String key = (String)e.nextElement();      String value = (String)headers.get(key);      writeString(key + ": " + value);      writeString("\r\n");    }    if (contentLength != -1)    {      writeString("Content-Length: " + contentLength);      writeString("\r\n");    }    writeString("\r\n");    headersWrited = true;  }  private void writeString(String toWrite)  {    try    {      os.write(toWrite.getBytes());    }    catch (IOException e)    {      System.out.println("Exception while writing: " + e);    }  }  void close() throws IOException  {    if (sos != null)    {      sos.flush();      sos.close();      return;    }    if (pw != null)    {      pw.flush();      pw.close();      return;    }    os.flush();    os.close();  }  void setProtocol(String protocol)  {    this.protocol = protocol;  }  String getProtocol()  {    return protocol;  }  void setServer(JHttpServer server)  {    this.server = server;  }  public JHttpServer getServer()  {    return server;  }}