package Serfler;

//    Serfler - an Http server written in Java based on servlets
//    Copyright (c) 1998 by Douglas Harris <doug@mscs.mu.edu>
//    Distributed under the GNU General Public License
//    <http://www.fsf.org/coopyleft/gpl.html>
//    A copy is included with this software distribution.
//    The package is available from
//    http://spectral.mscs.mu.edu/javadev/src/serfler.zip
//    

import javax.servlet.*;
import javax.servlet.http.*;
import java.util.Hashtable;
import java.util.Enumeration;

public class SerflerConfig implements ServletConfig{

  static Hashtable defaultParameters=new Hashtable(); // so it is never null
  Hashtable initParameters=defaultParameters;

  static ServletContext defaultContext=(ServletContext) new SerflerContext();
  ServletContext context= defaultContext;

  public SerflerConfig(){
  }

  public SerflerConfig(ServletContext context){
    this.context=context;
  }

  public SerflerConfig(String initParameterString){
    initParameters=parseInitParameterString(initParameterString);
  }

  public SerflerConfig(ServletContext context, String initParameterString){
    this.context=context;
    initParameters=parseInitParameterString(initParameterString);
  }

  public Hashtable parseInitParameterString(String initParameterString){
    Hashtable h=new Hashtable();
    Hashtable tmp = HttpUtils.parseQueryString(initParameterString);
    Enumeration e=tmp.keys();
    String name=null;
    String[] vals=null;
    String val=null;
    while(e.hasMoreElements()){
      name=(String)e.nextElement();
      vals=(String[])tmp.get(name);
      for (int i=0;i<vals.length;i++){
        if (i>0){
          vals[i]=val+", "+vals[i];
        }
        val=vals[i];
      }
      h.put(name,val);
    }
    return h;
  }

/*
 *  implementation of ServletConfig
 */

  public ServletContext getServletContext(){
    return context;
  }

  public String getInitParameter(String name){
    return (String)initParameters.get(name);
  }


  public Enumeration getInitParameterNames(){
    return initParameters.keys();
  }
}