def managed_output_trace(in_uri):
trace = plt.output_trace(in_uri)
trace.start_output()
try:
yield trace
finally:
trace.close_output()
import sys # argv, exit
in_uri = sys.argv[1] # Program name is argv[0]
out_uri = sys.argv[2]
n_records = sys.argv[3]
if not n_records or int(n_records) <= 0:
print "Number of records to copy not specified <<<"
exit()
else:
n_records = int(n_records)
print "copying first %d records from %s to %s ..." % (
n_records, in_uri, out_uri)
t = plt.trace(in_uri)
t.start()
ot = plt.output_trace(out_uri)
ot.start_output()
n = 0
for pkt in t:
n += 1
ot.write_packet(pkt)
if n == n_records:
break
ot.close_output(); t.close()
import plt # Also imports IPprefix and datetime
import sys # argv, exit
from plt_testing import *
in_uri = 'icmp-sample.pcap'
out_uri = 'pcapfile:icmp-sample-out.pcap'
n_records = 10
test_println(
"copying first %d records from %s to %s ..." %
(n_records, in_uri, out_uri), get_tag())
t = plt.trace(in_uri)
t.start()
ot = plt.output_trace(out_uri)
ot.start_output()
n = 0
for pkt in t:
n += 1
ot.write_packet(pkt)
if n == n_records:
break
if n != n_records:
test_println(
"error copying records. only %d out of %d were copied." %
(n, n_records), get_tag())