port_publisher: add option to specify TCP port, improve help text
diff --git a/examples/port_publisher.py b/examples/port_publisher.py
index d05a631..22b97a7 100755
--- a/examples/port_publisher.py
+++ b/examples/port_publisher.py
@@ -342,21 +342,42 @@
If running as daemon, write to syslog. Otherwise write to stdout.
""")
- parser.add_option("-q", "--quiet", dest="quiet", action="store_true",
- help="suppress non error messages", default=False)
+ parser.add_option("-q", "--quiet",
+ dest="quiet",
+ action="store_true",
+ help="suppress non error messages",
+ default=False)
- parser.add_option("-o", "--logfile", dest="log_file",
- help="write messages file instead of stdout", default=None, metavar="FILE")
+ parser.add_option("-o", "--logfile",
+ dest="log_file",
+ help="write messages file instead of stdout",
+ default=None,
+ metavar="FILE")
- parser.add_option("-d", "--daemon", dest="daemonize", action="store_true",
- help="start as daemon", default=False)
+ parser.add_option("-d", "--daemon",
+ dest="daemonize",
+ action="store_true",
+ help="start as daemon",
+ default=False)
- parser.add_option("", "--pidfile", dest="pid_file",
- help="specify a name for the PID file", default=None, metavar="FILE")
+ parser.add_option("", "--pidfile",
+ dest="pid_file",
+ help="specify a name for the PID file",
+ default=None,
+ metavar="FILE")
- parser.add_option("", "--ports-regex", dest="ports_regex",
- help="specify a regex to search against the serial devices and their descriptions",
- default='/dev/ttyUSB[0-9]+', metavar="REGEX")
+ parser.add_option("-p", "--port",
+ dest="base_port",
+ help="specify lowest TCP port number (default: %default)",
+ default=7000,
+ type='int',
+ metavar="PORT")
+
+ parser.add_option("", "--ports-regex",
+ dest="ports_regex",
+ help="specify a regex to search against the serial devices and their descriptions (default: %default)",
+ default='/dev/ttyUSB[0-9]+',
+ metavar="REGEX")
(options, args) = parser.parse_args()
@@ -462,7 +483,7 @@
# Handle devices that are connected but not yet published
for device in set(connected).difference(published):
# Find the first available port, starting from 7000
- port = 7000
+ port = options.base_port
ports_in_use = [f.network_port for f in published.values()]
while port in ports_in_use:
port += 1
@@ -502,6 +523,7 @@
# print "operation used %.3f s" % (time.time() - select_end)
except KeyboardInterrupt:
alive = False
+ sys.stdout.write('\n')
except SystemExit:
raise
except: