utility.java

比较好的BBS社区源码

package db;

import java.io.*;
import java.util.*;

public class Utility{
/*
//去掉奇怪的：
public String RemoveComment(String Content){
String makeContent=new String();
StringTokenizer strToken=new StringTokenizer(Content,"\n");
String tempToken=null;

while(strToken.hasMoreTokens()){
tempToken=strToken.nextToken();
if(tempToken.indexOf(":")!=0)
makeContent=makeContent+tempToken+"\n";
}

return makeContent;
}

//将/n转换成为回车<br>
public String addBr(String Content){
String makeContent=new String();
StringTokenizer strToken=new StringTokenizer(Content,"\n");
while(strToken.hasMoreTokens()){
makeContent=makeContent+"<br>"+strToken.nextToken();
}
return makeContent;
}

//public String convertNewlines(String input) {
//  String result=input.replace(input,"\r\n","<br>");
//  return result.replace(result,"\n","<br>");
//}
*/

public String[] split(String source,String div){
      int arynum = 0,intIdx=0,intIdex=0,div_length = div.length();     
      if(source.compareTo("")!=0){      
        if(source.indexOf(div)!=-1){       
         intIdx = source.indexOf(div);        
         for(int intCount =1 ; ; intCount++){        
           if(source.indexOf(div,intIdx+div_length)!=-1){
             intIdx= source.indexOf(div,intIdx+div_length);
             arynum = intCount;
             }
           else {arynum+=2;break;}
            }                    
       }else arynum =1;
      }else arynum = 0;
     
      intIdx=0;
      intIdex=0;
      String[] returnStr = new String[arynum];
     
      if(source.compareTo("")!=0){
      
       if(source.indexOf(div)!=-1){
       
        intIdx = (int)source.indexOf(div);
        returnStr[0]= (String)source.substring(0,intIdx);
      
        for(int intCount =1 ; ; intCount++){
           if(source.indexOf(div,intIdx+div_length)!=-1){
             intIdex=(int)source.indexOf(div,intIdx+div_length);
             
             returnStr[intCount] = (String)source.substring(intIdx+div_length,intIdex);
             
             intIdx = (int)source.indexOf(div,intIdx+div_length);
             }
           else {
                returnStr[intCount] = (String)source.substring(intIdx+div_length,source.length());
                break;
                }
            }
      }
      else {returnStr[0] = (String)source.substring(0,source.length());return returnStr;}
     }
     else {return returnStr;}                  
    return returnStr;    
}


public String dealNull(String str) {
    String returnstr = null;
    if (str == null) returnstr = "";
    else returnstr = str;
    return returnstr;
  }

public Object dealNull(Object obj){
    Object returnstr = null;
    if (obj == null) returnstr = (Object)("");
    else returnstr = obj;
    return returnstr;
  }

  int dealEmpty(String s) {
    s = dealNull(s);
    if (s.equals("")) return 0;
    return Integer.parseInt(s);
  }


public String replace(String str,String substr,String restr){
  String[] tmp = split(str,substr);
  String returnstr = null;
  if(tmp.length!=0) {
    returnstr = tmp[0];
    for(int i = 0 ; i < tmp.length - 1 ; i++)
      returnstr =dealNull(returnstr) + restr +tmp[i+1];
  } 
  return dealNull(returnstr);
}   
   


public String addBr(String txt){
  if (txt != null)
  {
  txt = replace(txt,"\n","<br>");
  }
  return txt;
}

public String DelBr(String txt){
  if (txt != null)
  {
  txt = replace(txt,"<br>","");
  }
  return txt;
}

public String AddSlashes(String txt){
  if (txt != null)
  {
  txt = replace(txt,"\'","\\'");
  }
  return txt;
}

public String stripslashes(String txt){
  if (txt != null)
  {
  txt = replace(txt,"\'","'");
  }
  return txt;
}

public String htmlEncode(String txt){
  txt = replace(txt,"&","&amp;");
  txt = replace(txt,"&amp;amp;","&amp;");
  txt = replace(txt,"&amp;quot;","&quot;");
  txt = replace(txt,"\"","&quot;");
  txt = replace(txt,"&amp;lt;","&lt;");
  txt = replace(txt,"<","&lt;");
  txt = replace(txt,"&amp;gt;","&gt;");
  txt = replace(txt,">","&gt;");
  txt = replace(txt,"&amp;nbsp;","&nbsp;");
  txt = replace(txt," ","&nbsp;");
  return txt;
}

public String unHtmlEncode(String txt){
  txt = replace(txt,"&amp;","&");
  txt = replace(txt,"&quot;","\"");
  txt = replace(txt,"&lt;","<");
  txt = replace(txt,"&gt;",">");
  txt = replace(txt,"&nbsp;"," ");
  return txt;
}

public String ScriptEncode(String txt){
  txt = replace(txt,"javascript","");
  txt = replace(txt,"Javascript","");
  txt = replace(txt,"JavaScript","");
  txt = replace(txt,"jscript","");
  txt = replace(txt,"JScript","");
  txt = replace(txt,"js","");
  txt = replace(txt,"JS","");
  txt = replace(txt,"vbs","");
  txt = replace(txt,"VBS","");
  txt = replace(txt,"vbscript","");
  txt = replace(txt,"VBScript","");
  return txt;
}

}