package nu.fw.jeti.backend;

import java.util.Map;

/* 
 *	Jeti, a Java Jabber client, Copyright (C) 2002 E.S. de Boer  
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *	but WITHOUT ANY WARRANTY; without even the implied warranty of
 *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *	GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *	For questions, comments etc, 
 *	use the website at http://jeti.jabberstudio.org
 *  or mail/IM me at jeti@jabber.org
 */

public abstract class XMLDataFile
{
	int tabDepth=0;

    public XMLDataFile()
    {
    }

	private void addTabs(StringBuffer xml)
	{
		xml.append("\r\n");
		for(int i =0;i<tabDepth;i++)
		{
			xml.append("    ");
		}
	}

	/**
	 * <code>toString</code> is a serializer for the data contained in the
	 * object to an equivalent snippet of XML stream.
	 *
	 * @return a <code>String</code> value which contains the XML
	 * representation of this object
	 */
	public String toString()
	{
		StringBuffer retval=new StringBuffer();
		appendToXML(retval);
		return new String(retval);
	}

	/**
	* <code>appendToXML</code> appends the XML representation of the
	* current packet data to the specified <code>StringBuffer</code>.
	*
	* @param xml The <code>StringBuffer</code> to append to
	*/
    public abstract void appendToXML(StringBuffer xml);

	protected final void appendHeader(StringBuffer xml)
	{
	   xml.append("<?xml version=\"1.0\"?>");
    }

	protected final void appendOpenTag(StringBuffer xml,String name)
	{
		//xml.append("\r\n");
		addTabs(xml);
		tabDepth++;
		xml.append(name);
	}

	protected final void appendCloseTag(StringBuffer xml,String name)
	{
		//xml.append("\r\n");
		tabDepth--;
		addTabs(xml);
		xml.append(name);

	}

	protected final void appendCloseSymbol(StringBuffer xml)
	{
		tabDepth--;
		xml.append("/>");
	}

	protected final boolean appendElement(StringBuffer xml,String name,String value)
	{
	   //xml.append("\r\n");
	   addTabs(xml);
	   boolean result = HelpXMLData.appendElement(xml,name,value);
	   //xml.append('\n');
	   return result;
	}

   protected final boolean appendElement(StringBuffer xml,String name,boolean value)
   {
	   //xml.append("\r\n");
	   addTabs(xml);
	   return HelpXMLData.appendElement(xml,name,value);
   }

   protected final boolean appendElement(StringBuffer xml,Map map)
   {
	   //xml.append("\r\n");
	   addTabs(xml);
	   return HelpXMLData.appendElement(xml,map);
   }

   protected final boolean appendAttribute(StringBuffer xml,String name,String value)
   {
	  return HelpXMLData.appendAttribute(xml,name,value);
   }

   protected final boolean appendAttribute(StringBuffer xml,String name,Object value)
   {
	   return HelpXMLData.appendAttribute(xml,name,value);
   }

   abstract static class HelpXMLData extends XMLData
   {

   }

}
/*
 * Overrides for emacs
 * Local variables:
 * tab-width: 4
 * End:
 */