From: Bernard Blackham <dagobah@ucc.gu.uwa.edu.au>
Date: Fri, 25 Jun 2004 14:29:09 +0000 (+0000)
Subject: Initial allowance of unexpected responses
X-Git-Url: https://git.ucc.asn.au/?a=commitdiff_plain;h=9f0dc95f27bd5cedf601bae506d0c40343be40ee;p=zanchey%2Fdispense2.git

Initial allowance of unexpected responses
---

diff --git a/sql-edition/servers/VendServer.py b/sql-edition/servers/VendServer.py
index 57a2682..9221a4d 100755
--- a/sql-edition/servers/VendServer.py
+++ b/sql-edition/servers/VendServer.py
@@ -5,6 +5,10 @@ from popen2 import popen2
 from pyPgSQL import PgSQL
 from LATClient import LATClient
 
+asynchronous_responses = [	'400', '401', # door open/closed
+							'610',        # switches changed
+						 ]
+
 class VendingMachine:
 	def __init__(self, rfh, wfh):
 		self.rfh = rfh
@@ -17,24 +21,26 @@ class VendingMachine:
 		state = 0
 		s = ''
 		while state != 3:
-		    s = self.rfh.read(1)
-		    if s == '': raise Exception
-		    if s == '\n' and state == 0: state = 1
-		    if s == '#' and state == 1: state = 2
-		    if s == ' ' and state == 2: state = 3
+			s = self.rfh.read(1)
+			if s == '': raise Exception
+			if s == '\n' and state == 0: state = 1
+			if (s == '#' or s == '%') and state == 1: state = 2
+			if s == ' ' and state == 2: state = 3
 
 	def get_response(self):
 		self.wfh.flush()
 		s = ''
 		while s == '':
-		    s = self.rfh.readline()
-		    if s == '': return None
-		    s = s.strip('\r\n')
-		return s
+			s = self.rfh.readline()
+			if s == '': return None
+			s = s.strip('\r\n')
+		return (s[0:3], s[4:])
 
 	def ping(self):
 		self.wfh.write('PING\n')
-		return self.get_response()
+		(code, string) = self.get_response()
+		return code == '000'
+
 
 if __name__ == '__main__':
 	# Open vending machine via LAT