Re: gEDA-user: PCB format wishlist

[Stefan Salewski <mail@xxxxxxxxxxxx>]

On Sun, 2010-09-05 at 21:56 +0200, kai-martin knaak wrote:
> Stefan Salewski wrote:
> 
> > One disadvantage of that format may be:
> > We have lines starting with a letter followed by up to 16 decimal
> > numbers -- hand editing such lines may be difficult. Not a problem for
> > me, I do not intend hand editing.
> 
> More precisely: Positional parameters are bad.
> Mapping position to meaning makes it hard to add additional parameters 
> anywhere but at the end. Structured data does not easily fit easily. It is 
> next to impossible to throw meaningful errors if values are in the wrong 
> order. Instead, the error likely goes unnoticed on read and can produce 
> havoc at unsuspected places further down the flow.
> 
> This is not a matter of style, but a major flaw.
> It is the very reason why a completely new format for pcb might be worth the 
> effort.
> 

Yes, I agree.

But when each parameter in the file has a name, than file size may
become really large, e.g. for files generated with the topological
router, with lot of arcs.





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