From d1cb958745e00f4f790bcacdf0a420cb227a5a88 Mon Sep 17 00:00:00 2001
From: Neo_Chen <chenkolei@gmail.com>
Date: Sun, 15 Mar 2020 20:07:09 +0800
Subject: [PATCH] makegraph.sh: use optipng to reduce nodes.png's size

---
 makegraph.sh | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/makegraph.sh b/makegraph.sh
index 66c091d..943cda8 100755
--- a/makegraph.sh
+++ b/makegraph.sh
@@ -7,3 +7,11 @@ if which dot 2>&1 > /dev/null ; then
 else
 	echo 'You need to install graphviz first'
 fi
+
+if [ "$1" != 'noopt' ]; then
+	if which optipng 2>&1 > /dev/null ; then
+		optipng -o7 -zm9 -v nodes.png
+	else
+		echo 'optipng is not present, not optimizing compression'
+	fi
+fi