TB源码分析:StyleTag

王朝java/jsp·作者佚名  2006-01-09
窄屏简体版  字體: |||超大  

package com.terac.tags;

import com.terac.util.EncodingUtil;

import javax.servlet.jsp.JspWriter;

import javax.servlet.jsp.tagext.BodyContent;

import javax.servlet.jsp.tagext.BodyTagSupport;

import java.io.IOException;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

public class StyleTag extends BodyTagSupport {

private int imageEnabled=1;

public void setImageEnabled(int imageEnabled) {

this.imageEnabled = imageEnabled;

}

public int doAfterBody() {

BodyContent bodyContent = getBodyContent();

String s = bodyContent.getString();

s = process(s);

JspWriter jspWriter = bodyContent.getEnclosingWriter();

try {

jspWriter.print(s);

} catch (IOException e) {

//

}

return EVAL_PAGE;

}

public static void main(String[] args) {

String s = new StyleTag().process("aaa");

System.out.println(s);

}

private String process(String s) {

//s = escapeXml(s);

s = convertNewLines(s);

s = EncodingUtil.ga(s);

s = convert(s, "\\[b\\](.[^\\[]*)(\\[\\/b\\])", "<b>$1</b>");

s = convert(s, "\\[i\\](.[^\\[]*)(\\[\\/i\\])", "<i>$1</i>");

s = convert(s, "\\[u\\](.[^\\[]*)(\\[\\/u\\])", "<u>$1</u>");

if(imageEnabled==1)

s = convert(s, "\\[img\\]http:\\/\\/(.[^\\[]*)\\[\\/img\\]", "<img src=\"http://$1\" border=\"0\" onload=\"if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7;} \" onmouseover=\"if(this.resized) this.style.cursor='hand';\" onclick=\"if(this.resized) {window.open('http://$1');}\">");

s = convert(s, "\\[url\\](.[^\\[]*)(\\[\\/url\\])", "<a href=\"$1\" target=_blank>$1</a>");

s = convert(s, "(\\[url=(.[^\\[]*)\\])(.[^\\[]*)(\\[\\/url\\])", "<a href=\"$2\" target=_blank>$3</a>");

s = EncodingUtil.ag(s);

return s;

}

private String convert(String source, String p, String r) {

Pattern pattern = Pattern.compile(p, Pattern.CASE_INSENSITIVE);

Matcher matcher = pattern.matcher(source);

StringBuffer stringbuffer = new StringBuffer();

while (matcher.find()) {

matcher.appendReplacement(stringbuffer, r);

}

matcher.appendTail(stringbuffer);

return stringbuffer.toString();

}

private String convertNewLines(String param) {

String BRTag = "<br />";

StringBuffer sb = new StringBuffer("");

for (int i = 0; i < param.length(); i++) {

char c = param.charAt(i);

if (c == '\n') {

sb.append(BRTag);

} else if (c == '\r' && i < param.length() - 1 && param.charAt(i + 1) == '\n') {

sb.append(BRTag);

i++;

} else

sb.append(c);

}

return sb.toString();

}

}

 
 
 
免责声明:本文为网络用户发布,其观点仅代表作者个人观点,与本站无关,本站仅提供信息存储服务。文中陈述内容未经本站证实,其真实性、完整性、及时性本站不作任何保证或承诺,请读者仅作参考,并请自行核实相关内容。
 
 
© 2005- 王朝網路 版權所有 導航