fontfilter.java

来自「一个用jsp写的完整的论坛源代码」· Java 代码 · 共 70 行

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 FontFilter extends Filter {

	public FontFilter() {
	}

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

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

	public String getTextFilter() {
		String tempString = s;
		for (int i = 0; i < 4; i++) {
			tempString = fontConverter(tempString);
			// System.out.println(tempString);
		}
		return tempString;
	}

	public String fontConverter(String s) {
		Pattern p;
		Matcher m;
		StringBuffer sb;
		boolean result;
		String reg = "\\[size=([1-7])\\](.[^\\[]*)(\\[\\/size\\])"
				+ "|\\[face=(.[^\\[]*)\\](.[^\\[]*)(\\[\\/face\\])"
				+ "|\\[align=(.[^\\[]*)\\](.[^\\[]*)(\\[\\/align\\])"
				+ "|\\[em([0-9]*)\\]";
		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, "<font size=" + m.group(1) + ">"
						+ m.group(2) + "</font>");
			else if (m.group(4) != null)
				m.appendReplacement(sb, "<font face=" + m.group(4) + ">"
						+ m.group(5) + "</font>");
			else if (m.group(7) != null)
				m.appendReplacement(sb, "<div align=" + m.group(7) + ">"
						+ m.group(8) + "</div>");
			else if (m.group(10) != null)
				m.appendReplacement(sb, "<img src=images/post/emot/em" + m.group(10)
						+ ".gif>");
			result = m.find();
		}
		m.appendTail(sb);
		return sb.toString();
	}
}