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 */
023package com.jcoverage.reporting;
024
025import java.util.*;
026
027import org.apache.log4j.Logger;
028
029/**
030 * This class implements a simple {@link Collator}.
031 */
032public 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}