[Lazarus] rewriting of LConvEncoding

[Mattias Gaertner]

On Thu, 23 Sep 2010 11:10:45 +0200
"Guy Fink" <merlin352 at globe.lu> wrote:

> --- Ursprüngliche Nachricht ---
> Von: Felipe Monteiro de Carvalho <felipemonteiro.carvalho at gmail.com>
> An: merlin352 at globe.lu, Lazarus mailing list <lazarus at lists.lazarus.freepascal.org>
> Betreff: Re: [Lazarus] rewriting of LConvEncoding
> 
> > 2010/9/20  <merlin352 at globe.lu>:
> > > I would rewrite the entire unit
> >
> > Great, just make sure you take all variables into account:
> >
> > * code size (check if your tables are smartlinkable. The current ones
> > are)
> > * speed
> > * maintenability
> >
> > On Mon, Sep 20, 2010 at 10:16 PM, Mattias Gaertner
> > <nc-gaertnma at netcologne.de> wrote:
> > > And the tables are quite big. Maybe the unit should be splitted
> > into
> > > several units.
> >
> > In my tests the asian tables are smartlinked and won't be added unless
> > necessary.
> >
> > Splitting into several units is also possible, but then a registration
> > mechanism should be added.
> >
> > --
> > Felipe Monteiro de Carvalho
> 
> My first idea of the structure then:
> 
> A ConvertEncoding-unit, containing all the necessary types,constants, function prototypes and the Unicodestuff. (conversions between the different UTF-variants). It could hold some jumptables for the conversion procedures, which are initalized to a local dummy function.
> 
> Then I do not generate include files, but a complete unit for every codepage we add.  This unit will register itself to the ConverEncoding-unit in its initialisation part. So the user has full control over supported codepages of his application by simply using the the needed codepage-units.

I think one unit per group is sufficient. For finer granularity there
is smartlinking.

Mattias