From 40b785b6915e8b6c85d93f4fe0d9b3a22695b035 Mon Sep 17 00:00:00 2001
From: Luke Tainton <luke@tainton.uk>
Date: Fri, 19 Feb 2021 20:23:42 +0000
Subject: [PATCH] Pass IPv4 via CLI argument

---
 .gitignore        |  1 +
 6to4_converter.py | 21 ++++++++++++++++-----
 2 files changed, 17 insertions(+), 5 deletions(-)
 create mode 100644 .gitignore
 mode change 100644 => 100755 6to4_converter.py

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..723ef36
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+.idea
\ No newline at end of file
diff --git a/6to4_converter.py b/6to4_converter.py
old mode 100644
new mode 100755
index 811ac4c..239dd9b
--- a/6to4_converter.py
+++ b/6to4_converter.py
@@ -1,9 +1,18 @@
 #!/usr/bin/env python3
 
+import argparse
 
-def get_ipv4_from_user():
-    user_in = input("Enter IPv4 address: ")
-    return user_in
+
+def parse_args():
+    parser = argparse.ArgumentParser(description='Get 6to4 address from IPv4 address.')
+    parser.add_argument('-a', '--address', dest='address', action='store', help='IPv4 address', required=True)
+    args = parser.parse_args()
+    return args
+
+
+def get_address():
+    args = parse_args()
+    return args.address
 
 
 def ipv4_to_ipv6(ipv4):
@@ -39,8 +48,10 @@ def ipv4_to_ipv6(ipv4):
 
 
 def main():
-    ipv4 = get_ipv4_from_user()
+    ipv4 = get_address()
     output = ipv4_to_ipv6(ipv4)
     print(output)
 
-main()
+
+if __name__ == '__main__':
+    main()