From 95155316462b45d7ee3baa64f28abe7b6d1be024 Mon Sep 17 00:00:00 2001
From: Colin Watson <cjwatson@chiark.greenend.org.uk>
Date: Mon, 24 Nov 2008 19:43:46 +0000
Subject: [PATCH 1/1] quick-and-dirty script to reverse the output of od

---
 revod | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100755 revod

diff --git a/revod b/revod
new file mode 100755
index 0000000..bca78c7
--- /dev/null
+++ b/revod
@@ -0,0 +1,33 @@
+#! /usr/bin/perl -w
+use strict;
+
+# Convert the output of 'od -tx1 -Ax' back to binary. The input is expected
+# to look like this:
+#
+# 000000 eb 58 90 4d 41 4b 45 42 4f 4f 54 00 02 08 40 00
+# 000010 01 00 00 00 00 f8 00 00 20 00 40 00 00 00 00 00
+# [...]
+
+binmode STDOUT;
+
+my $index = 0;
+my $prevblock;
+while (<>) {
+    chomp;
+    next if $_ eq '*';
+    if (s/^([a-z0-9]+)(?:\s+|$)//) {
+	my $lineindex = hex($1);
+	while ($lineindex > $index) {
+	    die "no previous block!" unless defined $prevblock;
+	    for my $hex (split ' ', $prevblock) {
+		print chr(hex($hex));
+		++$index;
+	    }
+	}
+    }
+    for my $hex (split) {
+	print chr(hex($hex));
+	++$index;
+    }
+    $prevblock = $_;
+}
-- 
2.30.2