//ConsoleWindow.java 
  
import  java.io.*; 

public class shell extends VMachine
{
	String shhname;
	boolean initialrun;
	String initialworker;

	public shell ()
	{// Used when new instance created
	}

	public shell (String name, String worker)
	{// Used when creating a shell and executing a worker
	 // Also used for initial startup

		shhname = name;
		initialworker = worker;
		initialrun = true;
		
	}
  
	public shell (String name)
	{// Used when creating new shell
		ConsoleWindow console = new ConsoleWindow(name);
	}

	public void run () 
	{ 
		sysapi.Write(OUT,"% ");
		String str = sysapi.Read(IN);
		
		String exitstr = str.toLowerCase();
		
		while(exitstr.compareTo("exit") != 0)//console.Active())
		{ 
				if(str!=null)
				{
					execute(str);
					
					if(sysapi.findUser(owner).isClosing)
					{
						break;
					}				
					
				}
				
				sysapi.Write(OUT,"% ");
				
				str = sysapi.Read(IN);
				
				exitstr = str.toLowerCase();

		}
		
		sysapi.Exit(vmh,owner);
		
		//console.dispose();
		//console.Always_Wait_For_Finish(); 
		//System.exit(0); 
	}  
	
	public void execute(String strworker)
	{
		String cmdargs = new String();	// Arguments Passed to Workers
		
		VMachine vm1 = null;
		FileClassLoader fileclass = null;
		fileclass = new FileClassLoader();
		fileclass.bindir = "C:\\java\\OSVM\\bin\\";
		Class newclass = null;
	
		int argstart;
	
		try
		{
			//This temporary section is in place until parser is implemented
			argstart = strworker.indexOf(" ");
			if(argstart != -1)
			{
				cmdargs = strworker.substring(argstart+1);
				strworker = strworker.substring(0,argstart);
			}
	
			strworker = strworker.trim();
	
			newclass = fileclass.loadCmd(strworker);
	
			//console.out.println("Loaded class " + newclass.getName() );
		
			try
			{

				Handle vmh1 = sysapi.CreateVM(IN,OUT,newclass,owner,cmdargs,this,null,null,0);
				
				sysapi.findUser(owner).addHandle(vmh1);
	
				sysapi.Compute(vmh);
	
					
			} catch(Exception ex)
			{
				sysapi.Write(OUT,"Program could not execute.\n");
				//ex.printStackTrace();
			}
	
	
	
		} catch(Exception ex)
		{
			sysapi.Write(OUT,"Command not recognized or not found.\n");
			//ex.printStackTrace();
		}
		
	}
};