package net.acai.filter;import java.util.regex.*;/** * Title:        清清網(wǎng)絡(luò) * Description: * Copyright:    Copyright (c) 2002 * Company:      www.qingqing.com * @author:       qingqing * @version 1.0 */public class EmailFilter extends filter {  public EmailFilter() {  }  public EmailFilter(String s) {    super(s);  }  public String convertString(){    return emailConverter();  }  public String emailConverter(){		Pattern p;		Matcher m;		StringBuffer sb;		boolean result;		String reg="\\[email=(.[^\\[]*)\\](.[^\\[]*)(\\[\\/email\\])"+                  "|\\[email\\](.[^\\[]*)(\\[\\/email\\])";        p = Pattern.compile(            reg,            Pattern.CASE_INSENSITIVE);        m = p.matcher(s);        sb = new StringBuffer();        result = m.find();        while(result&&m.group(0)!=null) {          if(m.group(1)!=null)            m.appendReplacement(sb,"<a href=\"mailto:"+m.group(1)+"\">"+m.group(2)+"</font>");          else if(m.group(4)!=null)            m.appendReplacement(sb,"<a href=\"mailto:"+m.group(4)+"\">"+m.group(4)+"</font>");            result = m.find();        }        m.appendTail(sb);		return sb.toString();	}}