bundle API: change "flags" to be "extra_index_pack_args"

Since the "flags" parameter was added in be042aff24 (Teach progress
eye-candy to fetch_refs_from_bundle(), 2011-09-18) there's never been
more than the one flag: BUNDLE_VERBOSE.

Let's have the only caller who cares about that pass "-v" itself
instead through new "extra_index_pack_args" parameter. The flexibility
of being able to pass arbitrary arguments to "unbundle" will be used
in a subsequent commit.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/bundle.c

@@ -166,6 +166,7 @@ static int cmd_bundle_unbundle(int argc, const char **argv, const char *prefix)
 		OPT_END()
 	};
 	char *bundle_file;
+	struct strvec extra_index_pack_args = STRVEC_INIT;
 
 	argc = parse_options_cmd_bundle(argc, argv, prefix,
 			builtin_bundle_unbundle_usage, options, &bundle_file);
@@ -177,7 +178,8 @@ static int cmd_bundle_unbundle(int argc, const char **argv, const char *prefix)
 	}
 	if (!startup_info->have_repository)
 		die(_("Need a repository to unbundle."));
-	ret = !!unbundle(the_repository, &header, bundle_fd, 0) ||
+	ret = !!unbundle(the_repository, &header, bundle_fd,
+			 &extra_index_pack_args) ||
 		list_bundle_refs(&header, argc, argv);
 	bundle_header_release(&header);
 cleanup:

bundle.c

@@ -569,18 +569,18 @@ err:
 }
 
 int unbundle(struct repository *r, struct bundle_header *header,
-	     int bundle_fd, int flags)
+	     int bundle_fd, struct strvec *extra_index_pack_args)
 {
-	const char *argv_index_pack[] = {"index-pack",
-					 "--fix-thin", "--stdin", NULL, NULL};
 	struct child_process ip = CHILD_PROCESS_INIT;
+	strvec_pushl(&ip.args, "index-pack", "--fix-thin", "--stdin", NULL);
 
-	if (flags & BUNDLE_VERBOSE)
-		argv_index_pack[3] = "-v";
+	if (extra_index_pack_args) {
+		strvec_pushv(&ip.args, extra_index_pack_args->v);
+		strvec_clear(extra_index_pack_args);
+	}
 
 	if (verify_bundle(r, header, 0))
 		return -1;
-	ip.argv = argv_index_pack;
 	ip.in = bundle_fd;
 	ip.no_stdout = 1;
 	ip.git_cmd = 1;

bundle.h

@@ -26,16 +26,19 @@ int create_bundle(struct repository *r, const char *path,
 		  int argc, const char **argv, struct strvec *pack_options,
 		  int version);
 int verify_bundle(struct repository *r, struct bundle_header *header, int verbose);
-#define BUNDLE_VERBOSE 1
 
 /**
  * Unbundle after reading the header with read_bundle_header().
  *
  * We'll invoke "git index-pack --stdin --fix-thin" for you on the
  * provided `bundle_fd` from read_bundle_header().
+ *
+ * Provide "extra_index_pack_args" to pass any extra arguments
+ * (e.g. "-v" for verbose/progress), NULL otherwise. The provided
+ * "extra_index_pack_args" (if any) will be strvec_clear()'d for you.
  */
 int unbundle(struct repository *r, struct bundle_header *header,
-	     int bundle_fd, int flags);
+	     int bundle_fd, struct strvec *extra_index_pack_args);
 int list_bundle_refs(struct bundle_header *header,
 		int argc, const char **argv);
 

transport.c

@@ -162,12 +162,16 @@ static int fetch_refs_from_bundle(struct transport *transport,
 			       int nr_heads, struct ref **to_fetch)
 {
 	struct bundle_transport_data *data = transport->data;
+	struct strvec extra_index_pack_args = STRVEC_INIT;
 	int ret;
 
+	if (transport->progress)
+		strvec_push(&extra_index_pack_args, "-v");
+
 	if (!data->get_refs_from_bundle_called)
 		get_refs_from_bundle(transport, 0, NULL);
 	ret = unbundle(the_repository, &data->header, data->fd,
-			   transport->progress ? BUNDLE_VERBOSE : 0);
+		       &extra_index_pack_args);
 	transport->hash_algo = data->header.hash_algo;
 	return ret;
 }