package org.paneris.jammyjoes.controller;

 import org.melati.template.ServletTemplateContext;

 import org.melati.util.UTF8URLEncoder;

 public class ParameterProvider {

   ServletTemplateContext context;

   String[] pathInfo;

   public ParameterProvider(ServletTemplateContext tc, String[] pathInfo) {

     this.context = tc;

     this.pathInfo = pathInfo;

   }

   public String getParam(String param, int pos) {

     String result = nulled(context.getForm(param));

     if (result != null) {

       return result;

     }

     if (pos > -1 && pos < pathInfo.length) {

       result = nulled(pathInfo[pos]);

     }

     if (result != null) {

       return UTF8URLEncoder.decode(result);

     }

     return result;

   }

   public String nulled(String string) {

     String result = string == null ? null : string;

     result = "".equals(string) ? null : result;

     result = "_".equals(string) ? null : result;

     return result;

   }

   public Integer getParamAsInt(String param, int pos) {

     String in = getParam(param, pos);

     return in == null ? null : new Integer(in);

   }

 }