textstylefilter.java

BBS论坛设计JSP＋MYSQL

package com.bcxy.bbs.filter;

/**
 * Title:
 * Description:
 * Copyright:
 * Company: www.liyunet.com
 * 
 * @author lishujiang	
 * @version 1.0
 */

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class TextStyleFilter extends filter {

	public TextStyleFilter(String s) {
		super(s);
	}

	public TextStyleFilter() {
	}

	public String convertString() {
		return this.getTextFilter();
	}

	public String getTextFilter() {
		String tempString = s;
		for (int i = 0; i < 5; i++) {
			tempString = textStyleConverter(tempString);
			// System.out.println(tempString);
		}
		return tempString;
	}

	public String textStyleConverter(String s) {
		Pattern p;
		Matcher m;
		StringBuffer sb;
		boolean result;
		p = Pattern.compile("\\[(b)\\](.[^\\[]*)\\[\\/(b)\\]|"
				+ "\\[(i)\\](.[^\\[]*)\\[\\/(i)\\]|"
				+ "\\[(u)\\](.[^\\[]*)\\[\\/(u)\\]|"
				+ "\\[(fly)\\](.[^\\[]*)\\[\\/(fly)\\]|"
				+ "\\[(center)\\](.[^\\[]*)\\[\\/(center)\\]",
				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, "<b>" + m.group(2) + "</b>");
			else if (m.group(4) != null)
				m.appendReplacement(sb, "<i>" + m.group(5) + "</i>");
			else if (m.group(7) != null)
				m.appendReplacement(sb, "<u>" + m.group(8) + "</u>");
			else if (m.group(10) != null)
				m.appendReplacement(sb, "<center>" + m.group(11) + "</center>");
			result = m.find();
		}
		m.appendTail(sb);
		return sb.toString();
	}
}