From d0bad95968b0ad1bda7ef694fdf5b8e7f396faa6 Mon Sep 17 00:00:00 2001
From: xengineering <me@xengineering.eu>
Date: Tue, 23 Dec 2025 11:26:34 +0100
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(+)

diff --git a/posix-shell/utils.sh b/posix-shell/utils.sh
index 4354a37..b21c09b 100644
--- a/posix-shell/utils.sh
+++ b/posix-shell/utils.sh
@@ -258,3 +258,21 @@ lar() {
 	popd
 	rm -rf "$temporary_directory"
 }
+
+hexdiff() {
+	if test "$#" -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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