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From: Michael S <already5chosen@yahoo.com>
Newsgroups: comp.lang.c
Subject: Re: xxd -i vs DIY Was: C23 thoughts and opinions
Date: Mon, 3 Jun 2024 13:01:45 +0300
Organization: A noiseless patient Spider
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On Mon, 3 Jun 2024 07:49:00 -0000 (UTC)
Lawrence D'Oliveiro <ldo@nz.invalid> wrote:

> On Wed, 29 May 2024 21:31:54 +0100, bart wrote:
>=20
> > Conclusion: beating xxd is apparently not hard if even a scripting
> > language can do so. I wonder what slows it down? =20
>=20
> It=E2=80=99s written in a very stdio-dependent vanilla C style.
>=20

So are all our [much much faster] mini-utils.

> Have a look at the source for yourself. It=E2=80=99s part of the =E2=80=
=9Cvim=E2=80=9D
> package on Debian and no doubt other distros. The xxd binary itself
> is built from a single source file of just some 1200 lines, and the
> hex-to-binary conversion is done in a function called =E2=80=9Chuntype=E2=
=80=9D of
> just 133 lines.

The question was about binary-to-hex rather than hex-to-binary.

BTW, it seems that 'xxd -i -r' does not work at all. Or, at least, I was
unable to figure out right combination of flags.