Reading Reg exp from text file give error

[Hira Iqbal]

Hi to All,

I am reading regx from a txt file in which data is written in XML format.
Now the problem is when is get the regx after reading and parsing the file .
The reg exp does not work fine. I mean matcher,matches() return false for any kind of input string.


Can anyone help in this??

Regards

Hira

[pradipta kumar rout]

Hello,Hira Iqbal

Can you give the code what you have done...

[Hira Iqbal]

hmm what code ??

The code which read file?

the code which parse it?

or the whole code??

[pradipta kumar rout]

I want to see the code ....

Its better to give the code which parse it?

[Hira Iqbal]

ok

folllowing is the codewhich read the file

public String readFromFile () {
		File file = new File("D://countries.txt");
	    FileInputStream fis = null;
	    BufferedInputStream bis = null;
	    DataInputStream dis = null;
	    StringBuffer raw = new StringBuffer();
	    
	    try {
	      fis = new FileInputStream(file);
	      bis = new BufferedInputStream(fis);
	      dis = new DataInputStream(bis);

	      raw = new StringBuffer();
	      while (dis.available() != 0) {
	    	  int len = 0;
	    	  raw.append(dis.readLine());
	      }
	      fis.close();
	      bis.close();
	      dis.close();

	    } catch (FileNotFoundException e) {
	      e.printStackTrace();
	    } catch (IOException e) {
	      e.printStackTrace();
	    }
	   
	    return raw.toString();
	}
	

and following is the code which do parsing .....

	public boolean loadXMLRegx(String cc) throws IOException {
		 String str="";
		 String country = "";
		 
		 str = this.readFromFile();
		try{
			
	        VOPXMLParser xml = new VOPXMLParser();
	        String xmlVersion ="";
	    	        
	        Vector listVersion = xml.extractList(str, "Version");
	        if (!listVersion.isEmpty()) {
	            xmlVersion = xml.getNode((String) listVersion.elementAt(0), "Version");	            
	        }
	        
	        Vector listCountry = xml.extractList(str, "Country");	        

	        StringBuffer sb = new StringBuffer();            
	        for (int index =0; index<listCountry.size(); index++){     
	            
	            String currentTag = (String) listCountry.elementAt(index);
	                                                                          
	            String countryCode = xml.getNode(currentTag, "CC");
	            String regx = xml.getNode(currentTag, "RE");
	             
	            country =countryCode+":"+regx;
	     //       System.out.println("Regx is " + regx);
	            
	            if(countryCode.equals(cc)){
	            	this.reOFCountry = regx;
	          //  	 System.out.println("Regx is " + regx);
	            	break;
	            }
	         }
	                          
	        return true;
	    }catch(Exception e){
	        return false;
	    }
	        
	   }

[Hira Iqbal]

ooopsss sorry !!

following is the code which do the parsing

public class VOPXMLParser {    
   
 
    public VOPXMLParser(){                
    }
      
    public Vector extractList(String parseString, String tagName){      
        boolean endParsing = false;
        int fromIndex = 0;        
        
        Vector list = new Vector();             
        while(!endParsing){
            int startIndex = parseString.indexOf("<"+tagName+">", fromIndex);
            if(startIndex == -1){
                endParsing = true;
                    break;
            }
                                                                
            int endIndex = parseString.indexOf("</"+tagName+">", fromIndex) + ("</"+tagName+">").length();
            if(endIndex == -1){                             
                    fromIndex = startIndex;
                continue;
            }
            
            list.addElement(parseString.substring(startIndex, endIndex));                                              
            fromIndex = endIndex;                      
        }
        return list;
    }
      
    public String getNode(String tag, String nodeName){
            
        int startIndex = tag.indexOf("<" + nodeName + ">");
        if(startIndex == -1)
            return "";
        int endIndex = tag.indexOf("</" + nodeName + ">");
        if(endIndex == -1)
            return "";                      
        return tag.substring(startIndex + ("<"+nodeName+">").length(), endIndex);
    }
}

[Hira Iqbal]

Helloooooo!!!

anybody home???

[Campbell Ritchie]

Hira Iqbal wrote:Helloooooo!!!

anybody home???

Read this.

That sort of comment is an effective way of annoying everybody else and dissuading them from answering.

[Hira Iqbal]

Hi to All,

And sorry campBell I will be carefull next time.

However , My problem is solved looks like I was not passing the regx in a proper way.

I was writting as following \\d{1,3}

but i have to wirte it like \d{1,3}

Thanks to everyone for your responses.

Regards
Hira

[Campbell Ritchie]

Apologies accepted

So the error was in something you hadn't shown us before?

[Hira Iqbal]

No ! the error was in something I did not expected to have error.....

Regards
Hira Iqbal

[Campbell Ritchie]

Just shows you . . . these errors appear mysteriously when you least expect them and where you least expect them.