hxd - HeX Dump in OCaml
hxd is a little program to output a hexdump of a /
xxd is to color outputs to be more fancy to read. Then, it provides a way to generate a Caml code which is a dump of inputs. This project was mostly done to be able to integrate dump of some sources (like
ngrep) to an OCaml code - like dump of a smart flow (git protocol) to be able to write easily regression tests with small examples.
For a long time, I worked on several formats and protocols and it always a pain to read dump of something which is only machine-comprehensible. As a MirageOS project, core library is agnostic to the system.
hxd provides several ways to dump a source:
lib/is the core library which needs only
lib_lwt/is a library which can be used in a LWT context
lib_string/needs only OCaml and
bigarrayand provides a pretty-printer function
$ hxd.xxd --color=always dump
Or a Caml output with
$ hxd.caml --with-comments dump:
[ ; "\x78\x01\x4b\xca\xc9\x4f\x52\x30\x35\x60\xd0\x48\xad\x48\x4d\x2e" (* x.K..OR05`.H.HM. *) ; "\x2d\x49\x4c\xca\x49\xe5\x52\xd0\xc8\x4b\xcc\x4d\x55\x48\x2b\xad" (* -IL.I.R..K.MUH+. *) ; "\xaa\xd2\x04\x72\x72\x32\x93\x8a\x12\x8b\x32\x53\x8b\x15\x32\x2a" (* ...rr2....2S..2. *) ; "\x52\x14\x92\x8b\xf2\xcb\x93\x12\x8b\x34\x35\x01\x2c\x48\x13\x4f" (* R........45.,H.O *) ]
Repository has an OPAM package, so:
$ opam pin add hxd https://github.com/dinosaure/hxd.git
is enough to get this fabulous binary.