add support of duplicates

README.rst

@@ -30,7 +30,7 @@ a dictionary containing the parsed fields::
   ... 2 packets transmitted, 2 received, 0% packet loss, time 5072ms
   ... rtt min/avg/max/mdev = 13.946/17.682/21.418/3.736 ms''')
   >>> OrderedDict(sorted(results.items()))
-  OrderedDict([('avgping', '17.682'), ('host', 'www.l.google.com'), ('jitter', '3.736'), ('maxping', '21.418'), ('minping', '13.946'), ('packet_loss', '0'), ('received', '2'), ('sent', '2')])
+  OrderedDict([('avgping', '17.682'), ('duplicates', '0'), ('host', 'www.l.google.com'), ('jitter', '3.736'), ('maxping', '21.418'), ('minping', '13.946'), ('packet_loss', '0'), ('received', '2'), ('sent', '2')])
 
 
 Installing

pingparser.py

@@ -27,7 +27,9 @@
 
 # This one works on OS X output which includes the percentage in 0.0% format
 # https://regex101.com/r/nmjQzI/2
-rslt_matcher = re.compile(r'(\d+) packets transmitted, (\d+) (?:packets )?received, (\d+\.?\d*)% packet loss')
+rslt_matcher = re.compile(r'(\d+) packets transmitted, (\d+) (?:packets )?received')
+dups_matcher = re.compile(r'\+(\d+) duplicates')
+loss_matcher = re.compile(r'(\d+\.?\d*)% packet loss')
 
 # Pull out round-trip min/avg/max/stddev = 49.042/49.042/49.042/0.000 ms
 minmax_matcher = re.compile(r'(\d+.\d+)/(\d+.\d+)/(\d+.\d+)/(\d+.\d+)')
@@ -36,6 +38,7 @@
 format_replacements = [('%h', 'host'),
                        ('%s', 'sent'),
                        ('%r', 'received'),
+                       ('%d', 'duplicates'),
                        ('%p', 'packet_loss'),
                        ('%m', 'minping'),
                        ('%a', 'avgping'),
@@ -46,12 +49,14 @@
 default_format = ','.join([fmt for fmt, field in format_replacements])
 
 
-def _get_match_groups(ping_output, regex):
+def _get_match_groups(ping_output, regex, default=None):
     """
     Get groups by matching regex in output from ping command.
     """
     match = regex.search(ping_output)
     if not match:
+        if default is not None:
+            return default
         raise Exception('Invalid PING output:\n' + ping_output)
     return match.groups()
 
@@ -74,7 +79,9 @@ def parse(ping_output):
                     in milliseconds
     """
     host = _get_match_groups(ping_output, host_matcher)[0]
-    sent, received, packet_loss = _get_match_groups(ping_output, rslt_matcher)
+    sent, received = _get_match_groups(ping_output, rslt_matcher)
+    duplicates, = _get_match_groups(ping_output, dups_matcher, default=('0',))
+    packet_loss, = _get_match_groups(ping_output, loss_matcher)
 
     try:
         minping, avgping, maxping, jitter = _get_match_groups(ping_output,
@@ -85,6 +92,7 @@ def parse(ping_output):
     return {'host'        : host,
             'sent'        : sent,
             'received'    : received,
+            'duplicates'  : duplicates,
             'packet_loss' : packet_loss,
             'minping'     : minping,
             'avgping'     : avgping,
@@ -129,6 +137,7 @@ def main(argv=sys.argv):
             \t%h    host name or IP address
             \t%s    packets sent
             \t%r    packets received
+            \t%d    duplicates
             \t%p    packet_loss
             \t%m    minimum ping in milliseconds
             \t%a    average ping in milliseconds

test/data/dup.testdata

@@ -0,0 +1,6 @@
+172.17.100.10,61,61,167,0,143.743,167.150,197.045,22.298
+PING 172.17.100.10 (172.17.100.10) 56(84) bytes of data.
+
+--- 172.17.100.10 ping statistics ---
+61 packets transmitted, 61 received, +167 duplicates, 0% packet loss, time 119997ms
+rtt min/avg/max/mdev = 143.743/167.150/197.045/22.298 ms

test/data/original.testdata

@@ -1,4 +1,4 @@
-www.l.google.com,2,2,0,13.946,17.682,21.418,3.736
+www.l.google.com,2,2,0,0,13.946,17.682,21.418,3.736
 PING www.l.google.com (74.125.225.84) 56(84) bytes of data.
 64 bytes from 74.125.225.84: icmp_req=1 ttl=55 time=13.9 ms
 64 bytes from 74.125.225.84: icmp_req=2 ttl=55 time=21.4 ms

test/data/yahoo.ping.testdata.debian

@@ -1,4 +1,4 @@
-yahoo.com,1,1,0,0.557,0.557,0.557,0.000
+yahoo.com,1,1,0,0,0.557,0.557,0.557,0.000
 PING yahoo.com (98.138.253.109): 56 data bytes
 64 bytes from 98.138.253.109: icmp_seq=0 ttl=37 time=0.557 ms
 --- yahoo.com ping statistics ---

test/data/yahoo.ping.testdata.osx

@@ -1,4 +1,4 @@
-yahoo.com,1,1,0.0,27.409,27.409,27.409,0.000
+yahoo.com,1,1,0,0.0,27.409,27.409,27.409,0.000
 PING yahoo.com (98.139.183.24): 56 data bytes
 64 bytes from 98.139.183.24: icmp_seq=0 ttl=48 time=27.409 ms