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ubb & java
—-use java to implement the ubb future.
[author] pizer.chen — iceant — 陈鹏
[email ] iceant@21cn.com
[icq ] 77777369
these days,i write some publish system,just like bbs/news etc.
the client asked me ,whether they can insert the image and href url to the plain text when they published them.
so i write this.
i use xml file for dynamic ubb extends.
u can make the ubb rule of yourself.
the only thing that u need to do is modify the ubb.xml config file.
best regards
===============
pizer.chen/2001-9-4
===========================
resource link
===========================
it is based on xml & regularexpressions tech.
about xml & regularexpression u can find them here:
http://www.w3.org/xml/
http://xml.apache.org
http://www.meurrens.org/ip-links/java/regex/navi.html
http://www.savarese.org/oro/
http://jakarta.apache.org/oro
about ubb u can find them here:
http://www.ubbdesign.com
========================
it used :
jakarta-regexp-1.2 (download form http://jakarta.apache.org)
dom4j-0.6(over 0.6 version) (download form http://sourceforge.net)
jdk(over 1.2 version) (download form http://java.sun.com)
==========================
ubb.xml
it must be stored in classpath
==========================
the regularexpression & replace string map file.
<!–============================–>
<?xml version="1.0" encoding="utf-8"?>
<ubb-map>
<map ubb-code="\[b\](.+?)\[\/b\]" map-to="<b>$1</b>"/> <!–<b>$1</b>–>
<map ubb-code="\[i\](.+?)\[\/i\]" map-to="<i>$1</i>"/> <!–<i>$1</i>–>
<map ubb-code="\[h1\](.+?)\[\/h1\]" map-to="<h1>$1</h1>"/> <!–<h1>$1</h1>–>
<map ubb-code="\(.+?)\[\/url\]" map-to="<a href="$1" target="_blank">$2</a>"/> <!–<a href="$1" target="_blank">$2</a>–>
<!–…–>
</ubb-map>
=========================
ubb.java
=========================
/*
* ubb.java
*
* created on 2001年9月3日, 下午4:01
*/
package com.wacos.util.ubb;
import org.dom4j.*;
import org.dom4j.io.*;
import java.io.*;
import java.util.*;
import org.apache.regexp.*;
/**
*
* @author pizer.chen — iceant — 陈鹏
* @version 0.1
*/
public class ubb {
private static final string xml_config_file = "ubb.xml";
private static org.dom4j.document doc = null;
/** creates new ubb */
public ubb() {
}
public static string parse(string instr){
try{
list list = getubbcodelist();
string ubbcode="";
string mapstr="";
attribute attribute=null;
for (iterator iter = list.iterator(); iter.hasnext(); ) {
attribute = (attribute) iter.next();
ubbcode = attribute.getvalue();
mapstr= getmapvalue(ubbcode);
instr=rereplace.replace(ubbcode,mapstr,instr);
}
return instr;
}catch(exception err){
system.out.println(err);
return err.tostring();
}
}
/**
* parse the xml file to document object
**/
private static document xml2document(){
try{
inputstream is = thread.currentthread().getcontextclassloader()
.getresourceasstream(xml_config_file);
saxreader reader = new saxreader();
document document = reader.read(is);
return document;
}catch(exception err){
system.out.println(err);
return null;
}
}
/**
* use xpath to get the map-to value of the ubb-code.
**/
private static string getmapvalue(string ubbcode){
try{
if(doc==null){
doc=xml2document();
}
node node = doc.selectsinglenode("//map[@ubb-code="+ubbcode+"]");
return node.valueof( "@map-to" );
}catch(exception err){
system.out.println(err);
return err.tostring();
}
}
/**
* get the <map ubb-code="…" map-to=".."> ubb-code list
**/
private static list getubbcodelist(){
try{
if(doc==null){
doc=xml2document();
}
return doc.selectnodes( "//map/@ubb-code" );
}catch(exception err){
system.out.println(err);
return null;
}
}
/**
* get the <map ubb-code="…" map-to=".."> map-to list
**/
private static list getubbmaplist(){
try {
if(doc==null){
doc=xml2document();
}
return doc.selectnodes("//map//@map-to");
}
catch (exception e) {
system.out.println(e);
return null;
}
}
}
========================
rereplace.java
========================
package com.wacos.util.ubb;
import java.io.*;
import java.util.*;
import org.apache.regexp.*;
public class rereplace
{
/**
* replace the instr with pattern1 & pattern2
**/
public static string replace(string pattern1,string pattern2,string instr){
try {
re re = new re(pattern1);
int point=0;
while(re.match(instr)){
re re2 = new re("\\$([0-9])");
while(re2.match(pattern2)){
point = integer.parseint(re2.getparen(1));
pattern2=re2.subst(pattern2,re.getparen(point),re.replace_firstonly);
}
instr = re.subst(instr,pattern2);
}
return instr;
}
catch (exception e) {
system.out.println(e);
return e.tostring();
}
}
}
=============================
ubbtest
=============================
package com.wacos.util.ubb;
public class ubbtest
{
public static void main(string[] args)
{
try{
string test ="atest
h1 font
\r\n [url href=http://www.21cn.com]测试hehe..";
system.out.println(ubb.parse(test));
}catch(exception err){
system.out.println(err);
}
}
}
