adding a zeek to CSV example

examples/zeek_to_csv.py

@@ -0,0 +1,34 @@
+"""Zeek log to CSV file Example"""
+import os
+import sys
+import argparse
+
+# Local imports
+from zat.log_to_dataframe import LogToDataFrame
+
+
+if __name__ == '__main__':
+    # Example to write CSV file from a zeek log
+
+    # Collect args from the command line
+    parser = argparse.ArgumentParser()
+    parser.add_argument('zeek_log', type=str, help='Specify the zeek log input file')
+    parser.add_argument('csv_file', type=str, help='Specify the CSV file to write out')
+    args, commands = parser.parse_known_args()
+
+    # Check for unknown args
+    if commands:
+        print('Unrecognized args: %s' % commands)
+        sys.exit(1)
+
+    # File may have a tilde in it
+    if args.zeek_log and args.csv_file:
+        args.zeek_log = os.path.expanduser(args.zeek_log)
+        args.csv_file = os.path.expanduser(args.csv_file)
+
+        # Convert to dataframe and write out the CSV file
+        log_to_df = LogToDataFrame()
+        zeek_df = log_to_df.create_dataframe(args.zeek_log)
+        print('Dataframe Created: {:d} rows...'.format(len(zeek_df)))
+        zeek_df.to_csv(args.csv_file, index=False)
+        print('Complete: {:s} --> {:s}'.format(args.zeek_log, args.csv_file))