From: Bernard Blackham <dagobah@ucc.gu.uwa.edu.au>
Date: Fri, 25 Jun 2004 15:33:11 +0000 (+0000)
Subject: Split this code out.
X-Git-Url: https://git.ucc.asn.au/?a=commitdiff_plain;h=3d1168a537169794cb3dda12269dd0d7c00d28d2;p=zanchey%2Fdispense2.git

Split this code out.
---

diff --git a/sql-edition/servers/VendServer.py b/sql-edition/servers/VendServer.py
index c6a9416..3f806bc 100755
--- a/sql-edition/servers/VendServer.py
+++ b/sql-edition/servers/VendServer.py
@@ -4,117 +4,7 @@ import sys, os, string, socket, time, re
 from popen2 import popen2
 from pyPgSQL import PgSQL
 from LATClient import LATClient
-from CRC import do_crc
-from binascii import unhexlify
-
-asynchronous_responses = [	'400', '401', # door open/closed
-							'610',        # switches changed
-						 ]
-
-class VendingMachine:
-	def __init__(self, rfh, wfh):
-		self.secret = 'AAAAAAAAAAAAAAAA'
-		self.rfh = rfh
-		self.wfh = wfh
-		self.challenge = None
-		# Initialise ourselves into a known state
-		self.wfh.write('\n')
-		self.await_prompt()
-		self.wfh.write('echo off\n')
-		self.await_prompt()
-		self.wfh.write('PING\n')
-		code = ''
-		while code != '000':
-			(code, _) = self.get_response()
-
-	def await_prompt(self):
-		self.wfh.flush()
-		state = 1
-		prefix = ''
-		s = ''
-		while True:
-			s = self.rfh.read(1)
-			if s == '': raise Exception
-			if s == '\n' or s == '\r':
-				state = 1
-				prefix = ''
-			if (s == '#' or s == '%') and state == 1: state = 2
-			if s == ' ' and state == 2:
-				if prefix == '':
-					self.challenge = None
-					return
-				if re.search('^[0-9a-fA-F]{4}$', prefix):
-					self.challenge = unhexlify(prefix)
-					return
-
-	def get_response(self):
-		self.wfh.flush()
-		while True:
-			s = ''
-			while s == '':
-				s = self.rfh.readline()
-				if s == '': return None
-				s = s.strip('\r\n')
-			code = s[0:3]
-			text = s[4:]
-			if code in asynchronous_responses:
-				self.handle_event(code, text)
-			else:
-				self.await_prompt()
-				return (code, text)
-
-	def handle_event(self, code, text):
-		pass
-
-	def authed_message(self, message):
-		if self.challenge == None:
-			return message
-		crc = do_crc('%c%c'%(self.challenge >> 8, self.challenge & 0xff))
-		crc = do_crc(self.secret, crc)
-		crc = do_crc(message, crc)
-		return message+'|'+('%04x'%crc)
-
-	def ping(self):
-		self.wfh.write('PING\n')
-		(code, string) = self.get_response()
-		return (code == '000', code, string)
-
-	def vend(self, item):
-		if not re.search('^[0-9][0-9]$', item):
-			return (False, 'Invalid item requested (%s)'%item)
-		self.wfh.write(self.authed_message(('V%s\n'%item)+'\n'))
-		(code, string) = self.get_response()
-		return (code, string)
-
-	def beep(self, duration = None, synchronous = True):
-		msg = 'B'
-		if synchronous: msg += 'S'
-		if duration != None:
-			if duration > 255: duration = 255
-			if duration < 1: duration = 1
-			msg += '%02x'%duration
-		self.wfh.write(msg+'\n')
-		(code, string) = self.get_response()
-		return (code == '500', code, string)
-
-	def silence(self, duration = None, synchronous = True):
-		msg = 'C'
-		if synchronous: msg += 'S'
-		if duration != None:
-			if duration > 255: duration = 255
-			if duration < 1: duration = 1
-			msg += '%02x'%duration
-		self.wfh.write(msg+'\n')
-		(code, string) = self.get_response()
-		# FIXME: workaround a bug in rom W. should be just: return (code == '500', code, string)
-		return (code == '500' or code == '501', code, string)
-
-	def display(self, string):
-		if len(string) > 10:
-			string = string[0:10]
-		self.wfh.write('D'+string+'\n')
-		(code, string) = self.get_response()
-		return (code == '300', code, string)
+from VendingMachine import VendingMachine
 
 if __name__ == '__main__':
 	# Open vending machine via LAT
diff --git a/sql-edition/servers/VendingMachine.py b/sql-edition/servers/VendingMachine.py
new file mode 100644
index 0000000..3046360
--- /dev/null
+++ b/sql-edition/servers/VendingMachine.py
@@ -0,0 +1,113 @@
+import re
+from CRC import do_crc
+from binascii import unhexlify
+
+asynchronous_responses = [	'400', '401', # door open/closed
+				'610',        # switches changed
+			 ]
+
+class VendingMachine:
+	def __init__(self, rfh, wfh):
+		self.secret = 'AAAAAAAAAAAAAAAA'
+		self.rfh = rfh
+		self.wfh = wfh
+		self.challenge = None
+		# Initialise ourselves into a known state
+		self.wfh.write('\n')
+		self.await_prompt()
+		self.wfh.write('echo off\n')
+		self.await_prompt()
+		self.wfh.write('PING\n')
+		code = ''
+		while code != '000':
+			(code, _) = self.get_response()
+
+	def await_prompt(self):
+		self.wfh.flush()
+		state = 1
+		prefix = ''
+		s = ''
+		while True:
+			s = self.rfh.read(1)
+			if s == '': raise Exception
+			if s == '\n' or s == '\r':
+				state = 1
+				prefix = ''
+			if (s == '#' or s == '%') and state == 1: state = 2
+			if s == ' ' and state == 2:
+				if prefix == '':
+					self.challenge = None
+					return
+				if re.search('^[0-9a-fA-F]{4}$', prefix):
+					self.challenge = unhexlify(prefix)
+					return
+
+	def get_response(self):
+		self.wfh.flush()
+		while True:
+			s = ''
+			while s == '':
+				s = self.rfh.readline()
+				if s == '': return None
+				s = s.strip('\r\n')
+			code = s[0:3]
+			text = s[4:]
+			if code in asynchronous_responses:
+				self.handle_event(code, text)
+			else:
+				self.await_prompt()
+				return (code, text)
+
+	def handle_event(self, code, text):
+		pass
+
+	def authed_message(self, message):
+		if self.challenge == None:
+			return message
+		crc = do_crc('%c%c'%(self.challenge >> 8, self.challenge & 0xff))
+		crc = do_crc(self.secret, crc)
+		crc = do_crc(message, crc)
+		return message+'|'+('%04x'%crc)
+
+	def ping(self):
+		self.wfh.write('PING\n')
+		(code, string) = self.get_response()
+		return (code == '000', code, string)
+
+	def vend(self, item):
+		if not re.search('^[0-9][0-9]$', item):
+			return (False, 'Invalid item requested (%s)'%item)
+		self.wfh.write(self.authed_message(('V%s\n'%item)+'\n'))
+		(code, string) = self.get_response()
+		return (code, string)
+
+	def beep(self, duration = None, synchronous = True):
+		msg = 'B'
+		if synchronous: msg += 'S'
+		if duration != None:
+			if duration > 255: duration = 255
+			if duration < 1: duration = 1
+			msg += '%02x'%duration
+		self.wfh.write(msg+'\n')
+		(code, string) = self.get_response()
+		return (code == '500', code, string)
+
+	def silence(self, duration = None, synchronous = True):
+		msg = 'C'
+		if synchronous: msg += 'S'
+		if duration != None:
+			if duration > 255: duration = 255
+			if duration < 1: duration = 1
+			msg += '%02x'%duration
+		self.wfh.write(msg+'\n')
+		(code, string) = self.get_response()
+		# FIXME: workaround a bug in rom W. should be just: return (code == '500', code, string)
+		return (code == '500' or code == '501', code, string)
+
+	def display(self, string):
+		if len(string) > 10:
+			string = string[0:10]
+		self.wfh.write('D'+string+'\n')
+		(code, string) = self.get_response()
+		return (code == '300', code, string)
+