001    /**
002     * www.jcoverage.com
003     * Copyright (C)2003 jcoverage ltd.
004     *
005     * This file is part of jcoverage.
006     *
007     * jcoverage is free software; you can redistribute it and/or modify
008     * it under the terms of the GNU General Public License as published
009     * by the Free Software Foundation; either version 2 of the License,
010     * or (at your option) any later version.
011     *
012     * jcoverage is distributed in the hope that it will be useful, but
013     * WITHOUT ANY WARRANTY; without even the implied warranty of
014     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
015     * General Public License for more details.
016     *
017     * You should have received a copy of the GNU General Public License
018     * along with jcoverage; if not, write to the Free Software
019     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
020     * USA
021     *
022     */
023    package com.jcoverage.reporting;
024    
025    import java.util.*;
026    
027    import org.apache.log4j.Logger;
028    
029    /**
030     * This class implements a simple {@link Collator}.
031     */
032    public abstract class AbstractCollator implements Collator {
033      
034      static Logger logger=Logger.getLogger(AbstractCollator.class);
035      
036      Map contextsByFormat=new HashMap();
037      
038      public void addOutputter(Format format,Serializer serializer) {
039        contextsByFormat.put(format,new FormattingContext(this,serializer));
040      }
041    
042      public void pageClosed(Page page) throws ReportingException {
043        for(Iterator it=contextsByFormat.keySet().iterator();it.hasNext();) {
044          Format format=(Format)it.next();
045          format.formatPage((FormattingContext)contextsByFormat.get(format),page);
046        }
047      }
048    
049      public String getPathToResource(FormattingContext ctx,String resource,Page from) {
050        return getRelativePath(getPathToPage(ctx,from),resource);
051      }
052      
053      protected static String getRelativePath(String from,String to) {
054        StringBuffer result=new StringBuffer(to);
055        // TODO: This is a simple implementation - a better one would
056        // recognize a common prefix between the two paths.
057        int it=0;
058        while (true) {
059          it=from.indexOf('/',it);
060          if (it!=-1) {
061            result.insert(0,"../");
062          } else {
063            break;
064          }
065          it+=1;
066        }
067        return result.toString();
068      }
069    
070      public abstract String getPathToPage(FormattingContext ctx,Page page);
071    
072    }