Python3ified and PEP8ed blpserver

utils/blpserver.py

@@ -1,3 +1,4 @@
+#! /usr/bin/env python3
 
 import socket
 import getopt
@@ -7,82 +8,84 @@ from blup.BLP import BLPServer
 import blup.BLP
 import blup.output
 
-
 def printUsage(errMsg=None):
-	if errMsg is not None:
+    if errMsg is not None:
-		print 'error: %s\n' % (errMsg)
+        print('error: %s\n' % (errMsg))
-	print 'usage: %s [OPTIONS]' % (sys.argv[0])
+    print('usage: %s [OPTIONS]' % (sys.argv[0]))
-	print 'supported options:'
+    print('supported options:')
-	print '  -a ADDR           address to listen for packets (default: 127.0.0.1)'
+    print('  -a ADDR           address to listen for packets',
-	print '  --address ADDR\n'
+          '(default: 127.0.0.1)')
-	print '  -p PORT           port to listen for packets (default: 4242)'
+    print('  --address ADDR\n')
-	print '  --port PORT\n'
+    print('  -p PORT           port to listen for packets (default: 4242)')
-	print '  -o OUTPUT         where to put the recieved frames (default: shell)'
+    print('  --port PORT\n')
-	print '  --output OUTPUT\n'
+    print('  -o OUTPUT         where to put the recieved frames',
-	print '  --eblp            use EBLP instead of BLP\n'
+          '(default: shell)')
-	print '  --e3blp           use E3BLP instead of BLP\n'
+    print('  --output OUTPUT\n')
-	print '  -h                print this text'
+    print('  --eblp            use EBLP instead of BLP\n')
-	print '  --help'
+    print('  --e3blp           use E3BLP instead of BLP\n')
-		
+    print('  -h                print this text')
+    print('  --help')
 
 def main():
-	try:
+    try:
-		(opts, args) = getopt.gnu_getopt(sys.argv, 'ha:p:o:', ['help', 'address=', 'port=', 'output=', 'eblp', 'e3blp'])
+        (opts, args) = getopt.gnu_getopt(sys.argv, 'ha:p:o:',
-		opts = dict(opts)
+                                         ['help', 'address=', 'port=',
-	except getopt.GetoptError as e:
+                                          'output=', 'eblp', 'e3blp'])
-		printUsage(e.msg)
+        opts = dict(opts)
-		sys.exit(1)
+    except getopt.GetoptError as e:
-
+        printUsage(e.msg)
-	if opts.has_key('--help'):
+        sys.exit(1)
-		printUsage()
+
-		sys.exit(0)
+    if '--help' in opts:
-
+        printUsage()
-	if opts.has_key('-a'):
+        sys.exit(0)
-		addr = opts['-a']
+
-	elif opts.has_key('--address'):
+    if '-a' in opts:
-		addr = opts['--address']
+        addr = opts['-a']
-	else:
+    elif '--address' in opts:
-		addr = '127.0.0.1'
+        addr = opts['--address']
-
+    else:
-	if opts.has_key('-p'):
+        addr = '127.0.0.1'
-		port = opts['-p']
+
-	elif opts.has_key('--port'):
+    if '-p' in opts:
-		port = opts['--port']
+        port = opts['-p']
-	else:
+    elif '--port' in opts:
-		port = 4242
+        port = opts['--port']
-
+    else:
-	if opts.has_key('-o'):
+        port = 4242
-		output = opts['-o']
+
-	elif opts.has_key('--output'):
+    if '-o' in opts:
-		output = opts['--output']
+        output = opts['-o']
-	else:
+    elif '--output' in opts:
-		output = 'shell'
+        output = opts['--output']
-
+    else:
-	if opts.has_key('--eblp'):
+        output = 'shell'
-		protocol = blup.BLP.PROTO_EBLP
+
-	elif opts.has_key('--e3blp'):
+    if '--eblp' in opts:
-		protocol = blup.BLP.PROTO_E3BLP
+        protocol = blup.BLP.PROTO_EBLP
-	else:
+    elif '--e3blp' in opts:
-		protocol = blup.BLP.PROTO_BLP
+        protocol = blup.BLP.PROTO_E3BLP
-
+    else:
-	if opts.has_key('--eblp') and opts.has_key('--e3blp'):
+        protocol = blup.BLP.PROTO_BLP
-		printUsage('please only specify one of --eblp or --e3blp')
+
-		sys.exit(1)
+    if '--eblp' in opts and '--e3blp' in opts:
-
+        printUsage('please only specify one of --eblp or --e3blp')
-	try:
+        sys.exit(1)
-		port = int(port)
+
-	except ValueError:
+    try:
-		printUsage('invalid port specified')
+        port = int(port)
-		sys.exit(1)
+    except ValueError:
-
+        printUsage('invalid port specified')
-	out = blup.output.getOutput(output)
+        sys.exit(1)
-	srv = BLPServer(output=out, addr=addr, port=port, protocol=protocol)
+
-
+    out = blup.output.getOutput(output)
-	try:
+    srv = BLPServer(output=out, addr=addr, port=port, protocol=protocol)
-		srv.serve()
+
-	except KeyboardInterrupt:
+    try:
-		pass
+        srv.serve()
+    except KeyboardInterrupt:
+        pass
 
 if __name__ == '__main__':
-	main()
+    main()