Hello Guy,
this looks like it is exactly what I'm looking for :-)
Could you provide the code please? I'd really like to get rid
of some ugly hacks in my code.
Thanks
Joerg
On Thu, 3 Dec 1998, Guy Harris wrote:
> > - Has someone written some "standard" code to decode and display the values
> > from bitfields?
>
> Decode and display in what fashion?
>
> I have some code that can, for example, decode the "type of service"
> bits in an IP header as
>
> Type of service: 0x00
> 000. .... = routine precedence
> ...0 .... = normal delay
> .... 0... = normal throughput
> .... .0.. = normal reliability
> .... ..0. = normal cost
>
> (along the lines of what "snoop", Microsoft Network Monitor, and
> possibly other packet-capture-and-display programs do) but, as the
> detail display pane currently uses a variable-width font, it doesn't
> look very good.
>
> Does anybody have any objection to making the detail pane use a
> fixed-width font?
>
> (It consists of routines to decode "boolean", "enumerated", and
> "numeric" bit fields; they take, as arguments:
>
> the number that contains the bitfield;
>
> a bitmask specifying which bits are in the bitfield;
>
> the width, in bits, of the number that contains the bitfield
> (typically 8, 16, or 32, but could be different);
>
> and various values that tell it how to decode the bitfield:
>
> for Boolean, strings that indicate what it means if the bit is
> on and what it means if the bit is off;
>
> for enumerated, a "value_string" array giving names to the
> various values;
>
> for numeric, a format string;
>
> and generate a string with the 0/1/. stuff, the "=", and the
> description. You make one call per bitfield.)
>
