On Sun, Mar 10, 2013 at 05:59:40PM +0100, Heiko Voigt wrote:
> diff --git a/config.c b/config.c
> index f55c43d..fe1c0e5 100644
> --- a/config.c
> +++ b/config.c
> @@ -10,20 +10,42 @@
> #include "strbuf.h"
> #include "quote.h"
>
> -typedef struct config_file {
> - struct config_file *prev;
> - FILE *f;
> +struct config_source {
> + struct config_source *prev;
> + void *data;
Would a union be more appropriate here? We do not ever have to pass it
directly as a parameter, since we pass the "struct config_source" to the
method functions.
It's still possible to screw up using a union, but it's slightly harder
than screwing up using a void pointer. And I do not think we need the
run-time flexibility offered by the void pointer in this case.
> +static int config_file_fgetc(struct config_source *conf)
> +{
> + FILE *f = conf->data;
> + return fgetc(f);
> +}
This could become just:
return fgetc(conf->u.f);
and so forth (might it make sense to give "f" a more descriptive name,
as we are adding other sources?).
-Peff
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