Re: [PATCH 2/5] gpg-interface: support one-line summaries in print_signature_buffer()

[Junio C Hamano <gitster@pobox.com>]

Hans Jerry Illikainen <hji@dyntopia.com> writes:

> Most consumers of the GPG interface use print_signature_buffer() to show
> This patch moves the one-line summary from verify_merge_signature() to
> print_signature_buffer().  It also introduces a GPG_VERIFY_SHORT flag
> that determines whether the summary should be printed.

I think the motivation makes sense.

> -void print_signature_buffer(const struct signature_check *sigc, unsigned flags)
> +void print_signature_buffer(const struct object_id *oid,
> +			    const struct signature_check *sigc, int status,
> +			    unsigned flags)
>  {
>  	const char *output = flags & GPG_VERIFY_RAW ?
>  		sigc->gpg_status : sigc->gpg_output;
> +	char hex[GIT_MAX_HEXSZ + 1];
> +	char *type;
>  
>  	if (flags & GPG_VERIFY_VERBOSE && sigc->payload)
>  		fputs(sigc->payload, stdout);
>  
>  	if (flags & GPG_VERIFY_FULL && output)
>  		fputs(output, stderr);
> +
> +	if (flags & GPG_VERIFY_SHORT && oid) {

I am not sure about the wisdom of "&& oid" here.  Wouldn't it be a
bug for a caller who asks for _SHORT format to feed a NULL oid to
us?  I would understand

	if (flags & GPG_VERIFY_SHORT) {
		if (!oid)
			BUG("Caller asking for SHORT without oid???");

much better, but if there is a caller that has a legitimate need
tobe able to pass NULL and still request SHORT, let's see it and
discuss if it is a good idea.

For that matter, the two print routines we have immediately above
share the same issue.

> +		type = xstrdup_or_null(
> +			type_name(oid_object_info(the_repository, oid, NULL)));
> +		if (!type)
> +			type = xstrdup("object");

This is minor, but I wonder if this is easier to follow.

		type = type_name(oid_object_info(the_repository, oid, NULL));
		if (!type)
			type = "object";
		type = xstrdup(type);

> +		*type = toupper(*type);

This is not helpful at all for i18n/l10n, I am afraid.

> +		find_unique_abbrev_r(hex, oid, DEFAULT_ABBREV);
> +
> +		switch (sigc->result) {
> +		case 'G':
> +			if (status)
> +				error(_("%s %s has an untrusted GPG signature, "
> +					"allegedly by %s."),
> +				      type, hex, sigc->signer);

The original was of course

        die(_("Commit %s has an untrusted GPG signature, "
              "allegedly by %s."), hex, signature_check.signer);

so the message can properly localized including the typename.  That
is no longer true with this conversion.

You probably would need to prepare a 3-element array (one element
for each of <object, commit, tag>), each element of the array being
a 3-element array that holds the message for these three cases
(i.e. G, N and default) instead.