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package org.kawai.tag.kcode;

import java.util.Map;


import javax.servlet.http.HttpServletRequest;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.PageContext;

/**
 * KCode class ContextPath.
 *
 * @author Sergio Oliveira
 *
 */

public class ContextPath implements KCode {

    /**
     * {@inheritDoc}.
     */

    @Override
    public String getTag() {
        return "contextPath";
    }

    /**
     * {@inheritDoc}.
     */

    @Override
    public boolean hasBody() {
        return false;
    }

    /**
     * {@inheritDoc}.
     */

    @Override
    public String process(PageContext pageContext, Map<String, String> attributes, String body) throws JspException {
        if (body != null) throw new JspException("contextPath tag cannot have a body!");
        HttpServletRequest req = (HttpServletRequest) pageContext.getRequest();
        return req.getContextPath();
    }
}