/*
 * CloseTagTransformer.java
 *
 * Created on May 10, 2006, 10:42 AM
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package org.nwoca.ssdt.tools.html2wiki;

import java.util.regex.*;
/**
 *
 * @author SMITH
 */
public class CloseTagTransformer implements Transformer {
    
    private Pattern startPattern;
    private Pattern terminationPattern;
    private String terminator;
    
    /** Creates a new instance of CloseTagTransformer */
    public CloseTagTransformer(String startExp, String termExp, String terminator) {
        this.startPattern = Pattern.compile(startExp);
        this.terminationPattern = Pattern.compile(termExp);
        this.terminator = terminator;
    }

    public void apply(StringBuffer buffer) {
        Matcher startMatcher = startPattern.matcher(buffer);
        Matcher terminateMatcher = terminationPattern.matcher(buffer);
        boolean first = true;
        while (startMatcher.find()) {
            if(terminateMatcher.find(startMatcher.end())) {
                buffer.insert(terminateMatcher.start(),terminator);
            }
            
        }

    }
        
    public String toString() {
        return "Closing: " + startPattern.pattern() + " with " + terminator;
    }

}