/* 
    <<plugin>>
    Namespace JSPWiki plugin
    Dirk Frederickx Jun 2005

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser 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
 */
package brushed.jspwiki.namespaceplugin;

import org.apache.log4j.Logger;
import com.ecyrd.jspwiki.*;
import com.ecyrd.jspwiki.plugin.*;
import java.util.*;

/**
 *  Breaks a pagename into pieces, based on the namespace delimiter
 *
 *  <P>Parameters</P>
 *  <UL>
 *    <LI>page:      Optional wiki page name. Default name of calling page.
 *    <LI>delimiter: Optional delimiter character. Default '.'
 *    <LI>concat:    Optional concatination characters. Default space+delimiter+space
 *    <LI>style:     Optional css style definition. Default 'namespace' class.
 *  </UL>
 *
 *  @author Dirk Frederickx
 */
public class Namespace
    extends AbstractReferralPlugin
{
    
    public static final String PARAM_PAGE      = "page";
    public static final String PARAM_DELIMITER = "delimiter";
    public static final String PARAM_CONCAT    = "concat";
    public static final String PARAM_STYLE     = "style";

    public String execute( WikiContext context, Map params )
        throws PluginException
    {
        m_engine = context.getEngine(); //use m_engine from parent bugfix
        StringBuffer m_result = new StringBuffer();
        
        WikiPage page = context.getPage();
        if( page == null ) return ""; 

        // parse parameters
        String name = (String)params.get( PARAM_PAGE );
        if( name == null ) name = page.getName() ;

        String delimiter = (String)params.get( PARAM_DELIMITER );
        if( delimiter == null ) delimiter = "." ;

        String concat = (String)params.get( PARAM_CONCAT );
        if( concat == null ) concat = " " + delimiter + " ";

        String style = (String)params.get( PARAM_STYLE );
        if( style == null ) { style = "namespace";       }
        else                { style = "(" + style + ")"; }

        // do the job
        m_result.append("%%" + style + " \n");

        StringBuffer    nn = new StringBuffer();      
        StringTokenizer st = new StringTokenizer( name, delimiter );

        while( st.hasMoreTokens() )
        {
          if( nn.length() != 0 ) 
          { 
            nn.append(delimiter) ; 
            m_result.append( concat ) ;
          }
          String ss = st.nextToken();
          nn.append( ss );
          m_result.append( '[' );
          m_result.append( ss );
          m_result.append( '|' );
          m_result.append( nn );
          m_result.append( ']' );
        }
  
        m_result.append ("\n%%\n" ) ;
          
        return makeHTML( context, m_result.toString() );
   }
    
}