Added --version option

Author: H21lab

README.md

@@ -17,9 +17,10 @@ pip install ijson
 
 ## Usage
 ```
-usage: json2pcap.py [-h] [-i [INFILE]] -o OUTFILE [-p] [-m MASKED_FIELD] [-a ANONYMIZED_FIELD] [-s SALT] [-v]
+usage: json2pcap.py [-h] [--version] [-i [INFILE]] -o OUTFILE [-p] [-m MASKED_FIELD]
+                    [-a ANONYMIZED_FIELD] [-s SALT] [-v]
 
-json2pcap v1.1
+json2pcap 1.1
 
 Utility to generate pcap from json format.
 
@@ -73,6 +74,7 @@ allowed values of the target field and field encoding.
 
 optional arguments:
   -h, --help            show this help message and exit
+  --version             show program's version number and exit
   -i [INFILE], --infile [INFILE]
                         json generated by tshark -T json -x
                         or by tshark -T jsonraw (not preserving frame timestamps).

json2pcap.py

@@ -473,8 +473,10 @@ def generate_pcap(d):
 #
 # ************ MAIN **************
 #
+VERSION = "1.1"
+
 parser = argparse.ArgumentParser(description="""
-json2pcap v1.1
+json2pcap {version}
 
 Utility to generate pcap from json format.
 
@@ -526,7 +528,8 @@ def generate_pcap(d):
 json2pcap  is  no performing  correct  protocol  encoding with  respect  to
 allowed values of the target field and field encoding.
 
-""", formatter_class=argparse.RawTextHelpFormatter)
+""".format(version=VERSION), formatter_class=argparse.RawTextHelpFormatter)
+parser.add_argument('--version', action='version', version='%(prog)s ' + VERSION)
 parser.add_argument('-i', '--infile', nargs='?', help='json generated by tshark -T json -x\nor by tshark -T jsonraw (not preserving frame timestamps).\nIf no inpout file is specified script reads from stdin.')
 parser.add_argument('-o', '--outfile', required=True, help='output pcap filename')
 parser.add_argument('-p', '--python', help='generate python payload instead of pcap (only 1st packet)', default=False, action='store_true')