From 8e94814d0708d312293e94e6a35f4b5ad555c263 Mon Sep 17 00:00:00 2001
From: Aaron LI <aly@aaronly.me>
Date: Sat, 15 Jan 2022 10:53:33 +0800
Subject: zsh: Add ip2dec() and dec2ip() functions

---
 _zshrc | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to '_zshrc')

diff --git a/_zshrc b/_zshrc
index 085e6c1..0a27cc7 100644
--- a/_zshrc
+++ b/_zshrc
@@ -230,6 +230,16 @@ hex2ip() {
     printf '%d.%d.%d.%d' $(echo "${1#0[xX]}" | sed 's/\(..\)/0x\1 /g')
 }
 
+## Convert IP between dotted-decimal and decimal notation
+# Credit: https://stackoverflow.com/a/24136051
+ip2dec() {
+    echo "$1" | awk 'BEGIN { RS = "." } { d = d * 256 + $1 } END { print d }'
+}
+# Credit: https://stackoverflow.com/a/31281331
+dec2ip() {
+    printf '%d.%d.%d.%d' $(echo "obase=256; $1" | bc)
+}
+
 #
 # Terminal settings
 #
-- 
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