import grid

 commands = {}

 def help(socket, client):

 	socket.sendto("\n".join([key + ": " + value[1] 

 		for key, value in commands.iteritems()]) + "\n", client)

 def createGrid(socket, client, (name,)):

 	grid.createGrid(name)

 	#print "grid %s created" % name

 	socket.sendto("grid %s created\n" % name, client)

 def listGrids(socket, client):

 	#print grid.grids

 	socket.sendto(" ".join(grid.grids.iterkeys()) + "\n", client)

 def lookupGrid(socket, client, name):

 	if name not in grid.grids:

 		socket.sendto("grid %s not found\n" % name, client)

 		return None

 	else:

 		return grid.grids[name]

 def listCells(socket, client, (gridName,)):

 	grid = lookupGrid(socket, client, gridName)

 	if grid:

 		socket.sendto(" ".join([str(cell) for cell in grid.cells.itervalues()])

 			+ "\n", client)

 def setCell(socket, client, (gridName, cellId, value)):

 	grid = lookupGrid(socket, client, gridName)

 	if grid:

 		grid.set(int(cellId), int(value))

 		#socket.sendto("cell %s on grid %s set to %s\n" %(cellId, gridName, value),

 		#	client)

 def iterate(socket, client, (gridName, iterNo)):

 	pass			

 def addObserver(socket, client, (gridName,)):

 	grid = lookupGrid(socket, client, gridName)

 	if grid:

 		grid.addObserver(socket, client)

 		socket.sendto("observer added: " + str(client) + "\n", client)

 commands = {"help": (help, "help"),

 	"create grid": (createGrid, "creates grid"),

 	"list grids": (listGrids, "lists all grids"),

 	"set cell": (setCell, "sets the value of a cell"),

 	"list cells": (listCells, "lists all cells of a grid"),

 	"iterate": (iterate, "iterates"),

 	"add observer": (addObserver, "adds an observer to a grid's events")}