Re: Extension to snprintb(3)

[Paul Goyette <paul%whooppee.com@localhost>]

On Mon, 4 May 2009, Christos Zoulas wrote:

> In article <Pine.NEB.4.64.0905041512450.11316%quicky.whooppee.com@localhost>,
> Paul Goyette  <paul%whooppee.com@localhost> wrote:
> > On Mon, 4 May 2009, Christos Zoulas wrote:
> >
> > > > I propose a modified version of snprintb(3) which fills its output
> > > > buffer only with complete bit/field values.

snip

> > Well,this turns out to be fairly easy for the "old format" control
> > strings in snprintb(3), but it doesn't work well with "new format"
> > strings with field specifications.  In particular, it's just about
> > impossible to "remember" that you've already processed the first field
> > from
> >
> >     ctl = "\177\20b\0B0\0b\1B1\0F\2\1fld\0=\0ZERO\0=\1ONE\0b\4B4\0"
> >
> > since it is entirely acceptable for the 2-bit field to have a value of
> > zero.

snip

> Well, it is easy to do for the new format too. Instead of doing it in
> multiple calls, pass the maximum length in the call, and have snprintb
> insert newlines, or make it return an array of allocated buffers.

Ah, just what I needed - someone looking at the forest instead of the 
trees!


-------------------------------------------------------------------------
|   Paul Goyette   | PGP DSS Key fingerprint: |  E-mail addresses:      |
| Customer Service | FA29 0E3B 35AF E8AE 6651 |  paul at whooppee.com   |
| Network Engineer | 0786 F758 55DE 53BA 7731 | pgoyette at juniper.net |
| Kernel Developer |                          | pgoyette at netbsd.org  |
-------------------------------------------------------------------------