/* 
 * Component.java (Implements Composite Pattern File)
 *
 * Written by : Nitin  Motgi (nmotgi@cs.ucf.edu)
 * 
 * ASSUMPTIONS :
 *
 * 1. This program does not handle single line multi-level change 
 *    directory. (e.g. cd <dir-name> ... allowed, but
 *                     cd <dir-name1>/<dir-name2> ... not allowed.
 *
 * 2. All the operations that are done will be done in the
 *    directory pointed by currentDir.
 *
 * 3. The file/directory to be deleted should be owned by "me". If
 *    I don't own the file, then I cannot delete them.
 *
 * 4. The file or directory that you are thinking of deleting should
 *    be present in the current directory.
 *
 * 5. During recursive deletion of directory if there is any file or
 *    directory that is owned by some one else, the operation of 
 *    recursive deletion is aborted.
 *
 *
 * Portions copyright(c) 2001 to School of Electrical Engineering and 
 * Computer Science, UCF, Orlando.                   
 *                                    
 * Use and distribution of this source code are strictly governed by 
 * terms and conditions set by the authors.
 * 
 * $Id : Component.java, 03/26/2001. $
 *            
 * Revision History:
 *
 * 1. Created basic structure           Nitin,        v1.0.0  04/02/2001.
 * 2. Added Documentation.              Nitin,        v1.0.1  04/02/2001.
*/

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

/* This class implements Composite Pattern using abstract class.*/
abstract class Component extends Object{ 
 public Component() { _next = null; }
 public abstract void operation();
 public Component getchild() { return(_next); }
 public void setchild(Component next) {_next=next; }
 public int DirectoryDetect() { return(0); }
 public abstract boolean chown(String szNewOwn,String szName);
 public abstract boolean chmod(String szMode,String szName);
 public abstract String  getOwner();
 public abstract String  getName();
 public abstract String  getPermissions();

 /* Formats time.*/
 public String formatTime(long lTime){
  long LeftSec=0;
  long LeftMin=0;
  int  nHour=0,nMin=0,nSec=0,nHundSec=0;
  String szTime = new String();

  LeftSec   = lTime/100;
  nHundSec  = (int)(lTime%100);
  LeftMin   = LeftSec/60;
  nSec      = (int)(LeftSec%60);
  nMin      = (int)(LeftMin%60);
  nHour     = (int)(LeftMin/60);
    
  if(nHour == 0 && nMin == 0 && nSec == 0)
   szTime = "0."+nHundSec;
  else
   if(nHour == 0 && nMin == 0)
    szTime = nSec + "." + nHundSec;
   else
    if(nHour == 0)
     szTime = nMin + ":" + nSec + "." + nHundSec;
    else
     szTime = nHour/1000000 + ":" + nMin + ":" + nSec;
   return szTime;
 }/* End of formatTime.*/
 private Component _next;
}/* End of Abstract Component Pattern.*/