Re: [PATCH] fast-export: factor out print_oid()

[Jeff King <peff@peff.net>]

On Thu, Aug 13, 2020 at 01:11:18PM +0200, René Scharfe wrote:

> Simplify the output code by splitting it up and reducing duplication.
> Reuse the logic for printing object IDs -- anonymized if needed -- by
> moving it to its own function, print_oid().

Looks sane overall, though somehow we added 4 extra lines while reducing
duplication. ;)

> +static void print_oid(const struct object_id *oid, int anonymize)
> +{
> +	const char *oid_hex = oid_to_hex(oid);
> +	if (anonymize)
> +		oid_hex = anonymize_oid(oid_hex);
> +	fputs(oid_hex, stdout);
> +}

Would anyone ever pass anything except the global "anonymize" into this
function (certainly neither of the new callers does). I get that it
takes us on a possible road towards moving the globals to locals, but in
the meantime, shadowing the global name just seems more confusing to me.

> @@ -470,21 +478,19 @@ static void show_filemodify(struct diff_queue_struct *q,
>  		case DIFF_STATUS_TYPE_CHANGED:
>  		case DIFF_STATUS_MODIFIED:
>  		case DIFF_STATUS_ADDED:
> +			printf("M %06o ", spec->mode);

This makes the output a bit more lego-like (i.e., hard to see what the
full line will look like from the code), but it already was pretty
bad because of using print_path(). I think that's fine.

> @@ -724,12 +730,10 @@ static void handle_commit(struct commit *commit, struct rev_info *rev,
>  		else
>  			printf("merge ");
>  		if (mark)
> -			printf(":%d\n", mark);
> +			printf(":%d", mark);

This line gets repeated, too. I guess we could have a print_mark(), but
there is really no logic here except "put a colon in front of it", so
probably not worthwhile.

-Peff