From 5d819a536b7742c7ef741e0923f9337a24eb01e9 Mon Sep 17 00:00:00 2001
From: Cameron Patrick <cameron@ucc.gu.uwa.edu.au>
Date: Sun, 1 Aug 2004 05:52:28 +0000
Subject: [PATCH] refactor config file parsing a bit

---
 sql-edition/servers/VendServer.py | 64 ++++++++++++++++++-------------
 1 file changed, 38 insertions(+), 26 deletions(-)

diff --git a/sql-edition/servers/VendServer.py b/sql-edition/servers/VendServer.py
index de763f2..2133f37 100755
--- a/sql-edition/servers/VendServer.py
+++ b/sql-edition/servers/VendServer.py
@@ -197,11 +197,11 @@ class MessageKeeper:
 	def done(self):
 		return len(self.scrolling_message) == 0
 
-def run_forever(rfh, wfh):
+def run_forever(rfh, wfh, options, cf):
 	v = VendingMachine(rfh, wfh)
 	print 'PING is', v.ping()
 
-	if USE_DB: db = DispenseDatabase(v, DBServer, DBName, DBUser, DBPassword)
+	if USE_DB: db = DispenseDatabase(v, cf.DBServer, cf.DBName, cf.DBUser, cf.DBPassword)
 	cur_user = ''
 	cur_pin = ''
 	cur_selection = ''
@@ -363,11 +363,10 @@ def run_forever(rfh, wfh):
 					cur_selection = ''
 					time_to_autologout = time() + 8
 
-# FIXME: a less ugly way of passing all these options would be nice
-def connect_to_vend(options, DBServer, DBName, DBUser, DBPassword, ServiceName, ServicePassword, ServerName, ConnectPassword, PrivPassword):
-	# Open vending machine via LAT
+def connect_to_vend(options, cf):
+	# Open vending machine via LAT?
 	if options.use_lat:
-		latclient = LATClient(service = ServiceName, password = ServicePassword, server_name = ServerName, connect_password = ConnectPassword, priv_password = PrivPassword)
+		latclient = LATClient(service = cf.ServiceName, password = cf.ServicePassword, server_name = cf.ServerName, connect_password = cf.ConnectPassword, priv_password = cf.PrivPassword)
 		rfh, wfh = latclient.get_fh()
 	else:
 		#(rfh, wfh) = popen2('../../virtualvend/vvend.py')
@@ -394,32 +393,45 @@ def parse_args():
 
 	return options
 
+config_options = {
+	'DBServer': ('Database', 'Server'),
+	'DBName': ('Database', 'Name'),
+	'DBUser': ('VendingMachine', 'DBUser'),
+	'DBPassword': ('VendingMachine', 'DBPassword'),
+	
+	'ServiceName': ('VendingMachine', 'ServiceName'),
+	'ServicePassword': ('VendingMachine', 'Password'),
+	
+	'ServerName': ('DecServer', 'Name'),
+	'ConnectPassword': ('DecServer', 'ConnectPassword'),
+	'PrivPassword': ('DecServer', 'PrivPassword'),
+	}
+
+class VendConfigFile:
+	def __init__(self, config_file, options):
+		try:
+			cp = ConfigParser.ConfigParser()
+			cp.read(config_file)
+
+			for option in options:
+				section, name = options[option]
+				value = cp.get(section, name)
+				self.__dict__[option] = value
+		
+		except ConfigParser.Error, e:
+			print "Error reading config file "+config_file+": " + str(e)
+			sys.exit(1)
+
+
 if __name__ == '__main__':
 	import ConfigParser
 
 	options = parse_args()
-
-	try:
-		cp = ConfigParser.ConfigParser()
-		cp.read(options.config_file)
-		DBServer = cp.get('Database', 'Server')
-		DBName = cp.get('Database', 'Name')
-		DBUser = cp.get('VendingMachine', 'DBUser')
-		DBPassword = cp.get('VendingMachine', 'DBPassword')
-		
-		ServiceName = cp.get('VendingMachine', 'ServiceName')
-		ServicePassword = cp.get('VendingMachine', 'Password')
-		
-		ServerName = cp.get('DecServer', 'Name')
-		ConnectPassword = cp.get('DecServer', 'ConnectPassword')
-		PrivPassword = cp.get('DecServer', 'PrivPassword')
-	except ConfigParser.Error, e:
-		print "Error reading config file: " + str(e)
-		sys.exit(1)
+	config_opts = VendConfigFile(options.config_file, config_options)
 
 	while True:
 		try:
-			rfh, wfh = connect_to_vend(options, DBServer, DBName, DBUser, DBPassword, ServiceName, ServicePassword, ServerName, ConnectPassword, PrivPassword)
+			rfh, wfh = connect_to_vend(options, config_opts)
 		except (LATClientException, socket.error), e:
 			(exc_type, exc_value, exc_traceback) = sys.exc_info()
 			print
@@ -430,7 +442,7 @@ if __name__ == '__main__':
 			sleep(5)
 			continue
 		try:
-			run_forever(rfh, wfh)
+			run_forever(rfh, wfh, options, config_opts)
 		except VendingException:
 			print
 			print "Connection died, trying again..."
-- 
2.20.1