/*
 * Created on 2005-6-21
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
package org.ug.sztz.domain.assistant;

import javax.servlet.ServletConfig;

import org.ug.sztz.domain.exception.IllegalServletConfigException;

/**
 * @author xix
 *
 * TODO To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
public class UrlConvertor {
	ServletConfig cfg;
	
	/**
	 * 
	 */
	public UrlConvertor(ServletConfig cfg) {
		this.cfg = cfg;
		// TODO Auto-generated constructor stub
	}
	
	/**
	 * @param url relative dir such as "/images"
	 * @return absolute dir such as "c:/webroot/images"
	 */
	public String getAbsoluteDir(String url) throws IllegalServletConfigException{
		return cfg.getServletContext().getRealPath(url);
	}
	
	public String getAbsoluteFile(String url, String filename) throws IllegalServletConfigException{
		String dir = "";
		
		dir = this.getAbsoluteDir(url);
		
		
		//Add system separator
		if("\\".equals(System.getProperty("file.separator")))
			dir += "\\";
	    else
	    	dir += System.getProperty("file.separator");
		
		dir += filename;
		
		return dir;
	}
	
	/**
	 * @param path such as "/images/a.gif"
	 * @return real path such as "c:/webroot/images/a.gif"
	 * @throws IllegalServletConfigException
	 */
	public String getAbsoluteFile(String path) throws IllegalServletConfigException{
		return cfg.getServletContext().getRealPath(path);
	}
	
}