//
   //  ========================================================================
   //  Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
   //  ------------------------------------------------------------------------
   //  All rights reserved. This program and the accompanying materials
   //  are made available under the terms of the Eclipse Public License v1.0
   //  and Apache License v2.0 which accompanies this distribution.
   //
   //      The Eclipse Public License is available at
  //      http://www.eclipse.org/legal/epl-v10.html
  //
  //      The Apache License v2.0 is available at
  //      http://www.opensource.org/licenses/apache2.0.php
  //
  //  You may elect to redistribute this code under either of these licenses.
  //  ========================================================================
  //
  
  package com.acme;
  
  import java.text.SimpleDateFormat;
  import java.util.Date;
  import java.util.TimeZone;
  
  import javax.servlet.jsp.JspException;
  import javax.servlet.jsp.JspTagException;
  import javax.servlet.jsp.PageContext;
  import javax.servlet.jsp.tagext.BodyContent;
  import javax.servlet.jsp.tagext.BodyTagSupport;
  import javax.servlet.jsp.tagext.Tag;
  
  @SuppressWarnings("serial")
  public class DateTag extends BodyTagSupport
  {
      Tag parent;
      BodyContent body;
      String tz="GMT";
  
      public void setParent(Tag parent) {this.parent=parent;}
      public Tag getParent() {return parent;}
      public void setBodyContent(BodyContent content) {body=content;}
      public void setPageContext(PageContext pageContext) {}
  
      public void setTz(String value) {tz=value;}
  
      public int doStartTag() throws JspException {return EVAL_BODY_BUFFERED;}
  
      public int doEndTag() throws JspException {return EVAL_PAGE;}
  
      public void doInitBody() throws JspException {}
  
      public int doAfterBody() throws JspException {
          try
          {
              SimpleDateFormat format = new SimpleDateFormat(body.getString());
              format.setTimeZone(TimeZone.getTimeZone(tz));
              body.getEnclosingWriter().write(format.format(new Date()));
              return SKIP_BODY;
          }
          catch (Exception ex) {
              ex.printStackTrace();
              throw new JspTagException(ex.toString());
          }
      }
  
      public void release()
      {
          body=null;
      }
  }