[PATCH] truncate: new applet

[Isaac Dunham]

On Tue, Mar 03, 2015 at 06:11:55PM +0200, Ari Sundholm wrote:
> I wrote this for my own purposes and cleaned it up in hopes it is useful.
> 
> Signed-off-by: Ari Sundholm <ari at tuxera.com>
> ---
>  coreutils/truncate.c | 92 ++++++++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 92 insertions(+)
>  create mode 100644 coreutils/truncate.c
> 
> diff --git a/coreutils/truncate.c b/coreutils/truncate.c
> new file mode 100644
> index 0000000..f997cd2
> --- /dev/null
> +++ b/coreutils/truncate.c

> +static const struct suffix_mult truncate_suffixes[] = {
> +	{ "c", 1 },
> +	{ "w", 2 },
> +	{ "b", 512 },
> +	{ "kB", 1000 },
> +	{ "kD", 1000 },
> +	{ "k", 1024 },
> +	{ "K", 1024 },  /* compat with coreutils dd (it also accepts KB and KD, TODO?) */
> +	{ "MB", 1000000 },
> +	{ "MD", 1000000 },
> +	{ "M", 1024*1024 },
> +	{ "GB", 1000000000 },
> +	{ "GD", 1000000000 },
> +	{ "G", 1024*1024*1024 },
> +	/* "D" suffix for decimal is not in coreutils manpage, looks like it's deprecated */
> +	/* coreutils also understands TPEZY suffixes for tera- and so on, with B suffix for decimal */
> +	{ "", 0 }
> +};

Was this copy-pasted from coreutils/dd.c?
The bloat could be reduced by making it shared between dd and truncate;
if my math is right, this table is at least 87 bytes.

Thanks,
Isaac Dunham