### Converts an input HP-GL file (command line argument) 
### to Ettan Spot Picker commands and sends them via an IP
### socket to a GSIOC interface controller.
 
import socket
import sys

# origin on the paper
dx = 1000
dy = 1000

file=sys.argv[1]

host = '192.168.1.2'
port = 12318
size = 1024
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((host,port))

def cmd(cmd):
	print cmd
	s.send(cmd)
	data = s.recv(size)
	return(data)
	
def xy(x,y):
	return cmd("bX%(x)04d/%(y)04d"%{"x": x+dx, "y": y+dy})

def penup():
	return cmd("bZ0750")

def pendown():
	return cmd("bZ0670")
	
def pentop():
	return cmd("bZ1300")

def _IN(arg):
 #cmd("bH")
 pentop()
 xy(dx, dy)
 return 
 
def PU(arg):
	args=arg.split(",")
	penup()
	if (len(args)>1):
		xy(int(args[0]), int(args[1]))
	return

def PD(arg):
	args=arg.split(",")
	pendown()	
	if (len(args)>1):
		xy(int(args[0]), int(args[1]))
	return  
	
def _VOID(arg):
	return


# read file
f=open(file, "r")
c=f.read()
commands = {"IN": _IN,
			"PU": PU,
			"PD": PD,
			"SP": _VOID,
			"\n": _VOID}
				
for command in c.split(";"):
	ci = command[0:2]
	commands[ci](command[2:])

pentop()
f.close()	
s.close()