From 6df549d1234f6a50d79ce56a367addc8ec263a16 Mon Sep 17 00:00:00 2001
From: Jan Krautmacher <jan.krautmacher@indurad.com>
Date: Thu, 25 Sep 2025 07:19:31 +0200
Subject: posix-shell: utils: Add hexdiff()

This tool outputs the diff of two hexdumps based on the two files
provided as arguments.
---
 posix-shell/utils.sh | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'posix-shell/utils.sh')

diff --git a/posix-shell/utils.sh b/posix-shell/utils.sh
index b1ffc21..f19602d 100644
--- a/posix-shell/utils.sh
+++ b/posix-shell/utils.sh
@@ -225,3 +225,21 @@ lar() {
 	popd
 	rm -rf "$temp"
 }
+
+hexdiff() {
+	if test "$#" -ne 2
+	then
+		echo "Usage: hexdiff <file1> <file2>"
+		return 1
+	fi
+
+	dump1="$(mktemp)"
+	dump2="$(mktemp)"
+
+	hexdump -C "$1" > "$dump1"
+	hexdump -C "$2" > "$dump2"
+
+	diff --unified=4 --color=always "$dump1" "$dump2"
+
+	rm -f "$dump1" "$dump2"
+}
-- 
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