From a5803c3a3e49d5d10e017a70c9e94d0545d59a09 Mon Sep 17 00:00:00 2001
From: pavet
Date: Thu, 9 Sep 2004 15:33:37 +0000
Subject: Initial revision

---
 docs/examples/pyhello.py | 94 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100755 docs/examples/pyhello.py

(limited to 'docs/examples/pyhello.py')

diff --git a/docs/examples/pyhello.py b/docs/examples/pyhello.py
new file mode 100755
index 0000000..e0db498
--- /dev/null
+++ b/docs/examples/pyhello.py
@@ -0,0 +1,94 @@
+#!/usr/bin/env python
+""" pyhello.py : very simple hello world python program using ivycpy
+with a local main loop
+"""
+import traceback, time, string, os, sys, getopt
+# importing ivycpy 
+from ivycpy import *
+
+IVYAPPNAME = "pyhello"
+
+def lprint(fmt,*arg):
+	print IVYAPPNAME + ": " + fmt % arg
+
+def usage(scmd):
+	lpathitem = string.split(scmd,'/')
+	fmt = '''Usage: %s [-h] [-b IVYBUS | --ivybus=IVYBUS]
+where
+\t-h provides the usage message;
+\t-b IVYBUS | --ivybus=IVYBUS allow to provide the IVYBUS string in the form
+\t adresse:port eg. 127.255.255.255:2010
+'''
+	print fmt   %  lpathitem[-1]
+
+def oncxproc(connected):
+	if connected == IvyApplicationDisconnected :
+		lprint( "An Ivy application was disconnected ")
+	else:
+		lprint( "An Ivy application was connected")
+	lprint("currents Ivy application are [%s]", IvyGetApplicationList())
+	
+def ondieproc(id):
+	lprint( "received the order to die with id = %d", id)
+
+def onmsgproc(*larg):
+	lprint( "%s received [%s] ", IVYAPPNAME , larg[0])
+
+def onhello(*larg):
+	sreply = "goodday %s to=%s from=%s " % (larg[0], larg[1],IVYAPPNAME) 
+	lprint( "on hello , %s reply [%s]", IVYAPPNAME, sreply) 
+	IvySendMsg(sreply)
+
+def ontick():
+	lprint( "%s send a tick", IVYAPPNAME) 
+	IvySendMsg("%s_tick" % IVYAPPNAME)
+
+if __name__ == '__main__':
+	# initializing ivybus and isreadymsg
+	sivybus = ""
+	sisreadymsg = "%s is ready" % IVYAPPNAME
+	# getting option
+	try:
+		optlist, left_args = getopt.getopt(sys.argv[1:],'hb:', ['ivybus='])
+	except getopt.GetoptError:
+		# print help information and exit:
+		usage(sys.argv[0])
+		sys.exit(2)
+	for o, a in optlist:
+		if o in ("-h", "--help"):
+			usage(sys.argv[0])
+			sys.exit()
+		elif o in ("-b", "--ivybus"):
+			sivybus= a
+	if sivybus != "" :
+		sechoivybus = sivybus
+	elif os.environ.has_key("IVYBUS"):
+		sechoivybus = os.environ["IVYBUS"]
+	else:
+		sechoivybus = "ivydefault"
+	lprint( "Ivy will broadcast on %s ", sechoivybus)
+
+	# initialising the bus 
+	IvyInit(IVYAPPNAME,   # application name for Ivy
+			sisreadymsg , # ready message
+			0,            # main loop is local (ie. using IvyMainloop)
+			oncxproc,     # handler called on connection/deconnection
+			ondieproc     # handler called when a diemessage is received 
+			)
+	# starting the bus
+	# Note: env variable IVYBUS will be used if no parameter or empty string
+	# is given ; this is performed by IvyStart (C)
+	IvyStart(sivybus)
+	# binding to every message 
+	IvyBindMsg(onmsgproc, "(.*)")
+	# binding on dedicated message : starting with "hello ..."
+	IvyBindMsg(onhello, "^hello=([^ ]*) from=([^ ]*)")
+	# creating a infinite timer 
+	timerid = IvyTimerRepeatAfter(0,     # number of time to be called
+								  1000,  # delay in ms between calls
+								  ontick # handler to call
+								  )
+	lprint( "IvyTimerRepeatAfter id is  %d", timerid)
+	
+	lprint( "%s doing IvyMainLoop", IVYAPPNAME)
+	IvyMainLoop()
-- 
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