$ time grep Nikolay t1.reg | wc       
     19      38     658

real    0m1.282s
user    0m0.070s
sys     0m0.090s

/registry/HKEY_CLASSES_ROOT
/registry/HKEY_LOCAL_MACHINE

[root@linux] cat /registry/HKEY_CLASSES_ROOT/.aif/OpenWithProgIds
AIFFFILE=null

#!/bin/sh

javac -d . RegistryCreate.java

#!/bin/sh

java ua.dn.mayton.tools.RegistryCreate registry.reg /db04/ 1   128 

package ua.dn.mayton.tools;

import java.io.*;

public class RegistryCreate
{
    int max_path_length= 128 ;

    String filter(String arg)
    {
        StringBuilder Sb=new StringBuilder();
        for(int i= 0 ;i<arg.length();i++)
        {
            int c=arg.charAt(i);
            if ((c>= 65 )&&(c<= 90 ))
            {
                Sb.append((char)c);
                continue;
            }
            if ((c>= 97 )&&(c<= 122 ))
            {
                Sb.append((char)c);
                continue;
            }
            if ((c>= 48 )&&(c<= 57 ))
            {
                Sb.append((char)c);
                continue;
            }
	    if (c=='\\')
	    {
		Sb.append('/');
		continue;
	    }
            if (c=='_')
            {
                Sb.append((char)c);
                continue;
            }
            Sb.append(String.format("$%04X",c));
        }
        return Sb.toString();
    }

  

    RegistryCreate(String[] args) throws IOException
    {
        String destdir=args[ 1 ];
	max_path_length=Integer.valueOf(args[ 2 ]);
        File destnode=new File(destdir);
        InputStreamReader isr=new InputStreamReader(new FileInputStream(args[ 0 ]),"utf-16");
        BufferedReader br=new BufferedReader(isr);
        String s;
        int count= 0 ;
	int dirscount= 0 ;
	int filescount= 0 ;
        boolean success=true;
        while((s=br.readLine())!=null)
        {
            if (s.length()> 2 ){
                if (s.substring( 0 , 1 ).equals("["))
                {
	            String keyPath=filter((s.substring( 1 ,s.length()- 1 )));

                    String fullDestPath=destdir+"/"+keyPath;

		    if (fullDestPath.length()<=max_path_length)
		    {

				  System.out.printf("Creating folder %s\n",fullDestPath);

	                          success = true;

				  int x= 0 ;

	        	          	(new File(fullDestPath)).mkdirs();
				        dirscount++;
					String fullFileName=fullDestPath+"/value";
					System.out.printf("..Creating file %s\n",fullFileName);
				        PrintWriter pw=new PrintWriter(new File(fullFileName),"koi8-r");
                                        while(true)
                                        {
						s=br.readLine();
						if (s==null) break;
						if (s.length()== 0 ) break;
						pw.println(s);
                                        }
                                        pw.close();                        	  

                                        filescount++;



                          
                    }                    
                    //System.out.printf(".");
                }
            }
        }
        System.out.printf("There are %d keys  created\n",dirscount);
        System.out.printf("          %d files created\n",filescount);
        br.close();
    }

    public static void main(String[] args)  throws IOException
    {
        new RegistryCreate(args);
    }
}