//File:  rmdir.java
//CS 471 - Operating Systems Project
//Dennis Pereira, Ely Soto, John Cavalieri

// This file deletes a directory and its contents if it exists

import  java.io.*;

public class rmdir extends VMachine
{
    public rmdir()
    {
    }
    
    public void run()
    {
        
        try
        {
            File fileObject;			// Set variables
            String filenames[];
            File[] fileObjects;
            String filename;
            for(int i = 0;i<args.length;i++)
            {
                fileObject = new File(sysapi.findUser(owner).getcurrentPath() + args[i]);		// directory
                filenames = fileObject.list();
                fileObjects = new File[filenames.length];		// array of files
                
                if(fileObject.isDirectory())
                {
                    fileObject.delete();
                    if(fileObject.exists())		//If it still exists it must be a directory with contents.
                    {
                        for(int x = filenames.length - 1; x >= 0; x--)
                        {
                            filename = filenames[x];
                            fileObjects[x] = new File (sysapi.findUser(owner).getcurrentPath() + args[i] + "/" +  filename);
                            fileObjects[x].delete();
                        }
                        
                        fileObject = new File(sysapi.findUser(owner).getcurrentPath() + args[i]);
                        fileObject.delete();
                    }
                }
                else
                {
                    sysapi.Write(OUT, "Error -- Directory does not exist.\n");	// Error code if directory doesn't exist.
                }
                
            }
        }
        catch (Exception err)
        {
            System.out.println("rmdir threw Exception: " + err);
        }
        
        sysapi.Exit(vmh,owner);
    }
    
}