RE: RE: VARCHAR to CIDR type cast

I'm writing these functions right now...Tonight i'll submit this to this
group :)

On Mon, 11 Jun 2001, Nicolas Huillard wrote:

> That's what I'm planning...
> But I have not such function code to start with. Is there somewhere 
> something like that :
> * a simple C function with all the PostgreSQL stuff
> * that simply call a PG's internal function (that will be cidr_in and 
> inet_in, for me)
> 
> >
> > Unfortunately, you cannot use inet_in function to cast a varchar, since 
> it
> > expects as input slightly different data (a null-terminated string),
> > while varchar is different (it has length info in beginning). I remember
> > there was a discussion about creation of a 'cstring' datatype to support
> > such conversions (ie convert xxx to yyy via xxx_out and yyy_in), but I
> > don't see any result...Anyone?
> 
> OK : the external cast function will only convert the 
> "length-info-at-the-beginning" string into a "null-terminated" string, then 
> call cidr_in...
> Really simple, in fact, but with a lot of stuff all around, isn't it ?
> 
> NH
> 
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