VisClient/org/hfbk/vis/source/SourceRegExp.java

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package org.hfbk.vis.source;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URL;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.dronus.graph.Node;
import org.hfbk.util.HTTPUtils;

public abstract class SourceRegExp extends Source {
        
        public SourceRegExp(URL url) {super(url);}

        Matcher matcher;
        Node root;
        
        abstract String url() throws UnsupportedEncodingException;
        abstract String matcher();
        abstract void parse(String[] matches) throws IOException;
        
        
        void buildGraph() throws IOException {          
                
                String page=HTTPUtils.fetch(url(), silent);
                
                Pattern p=Pattern.compile(matcher());
                Matcher matcher=p.matcher(page);
                while (matcher.find()){
                        String[] groups=new String[matcher.groupCount()+1];
                        for (int i=0; i<groups.length; i++)
                                groups[i]=matcher.group(i);
                        parse(groups);
                }
        }
}

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