From: Sage Weil <sage@redhat.com>
Date: Wed, 17 Jul 2019 19:59:02 +0000 (-0500)
Subject: src/script/unhexdump-C: script to reverse a 'hexdump -C' style hexdump
X-Git-Tag: v15.1.0~2018^2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=refs%2Fpull%2F29098%2Fhead;p=ceph.git

src/script/unhexdump-C: script to reverse a 'hexdump -C' style hexdump

Notably, this is the format for the bufferlist::hexdump() dump.

Signed-off-by: Sage Weil <sage@redhat.com>
---

diff --git a/src/script/unhexdump-C b/src/script/unhexdump-C
new file mode 100755
index 000000000000..b4e755973478
--- /dev/null
+++ b/src/script/unhexdump-C
@@ -0,0 +1,18 @@
+#/bin/bash
+
+cat $1 | \
+    sed -E 's/ /: /' | \
+    cut -c 1-59 | \
+    sed -E 's/ (..) (..)/ \1\2/g' | \
+    sed 's/  / /g' | \
+    grep ': '  | \
+    xxd -r > $2
+
+# real hexdump -C has a trailing file size, but it isn't always
+# present
+hexsize=$(tail -1 $1)
+if [ ${#hexsize} = 8 ]; then
+    decsize=$(printf '%d' $hexsize)
+    echo "truncate up to $decsize"
+    truncate --size $decsize $2
+fi