[PATCH 1/8] bundle: split basis discovery into its own function

[Jonathan Nieder <jrnieder@gmail.com>]

create_bundle() is getting a little long.  Isolate a small
piece to work on without distractions.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
---
 bundle.c |   58 ++++++++++++++++++++++++++++++++++------------------------
 1 files changed, 34 insertions(+), 24 deletions(-)

diff --git a/bundle.c b/bundle.c
index ff97adc..66948f4 100644
--- a/bundle.c
+++ b/bundle.c
@@ -193,35 +193,14 @@ static int is_tag_in_date_range(struct object *tag, struct rev_info *revs)
 		(revs->min_age == -1 || revs->min_age > date);
 }
 
-int create_bundle(struct bundle_header *header, const char *path,
-		int argc, const char **argv)
+static int list_prerequisites(int bundle_fd, struct rev_info *revs,
+		int argc, const char * const *argv)
 {
-	static struct lock_file lock;
-	int bundle_fd = -1;
-	int bundle_to_stdout;
 	const char **argv_boundary = xmalloc((argc + 4) * sizeof(const char *));
-	const char **argv_pack = xmalloc(5 * sizeof(const char *));
-	int i, ref_count = 0;
 	char buffer[1024];
-	struct rev_info revs;
 	struct child_process rls;
 	FILE *rls_fout;
 
-	bundle_to_stdout = !strcmp(path, "-");
-	if (bundle_to_stdout)
-		bundle_fd = 1;
-	else
-		bundle_fd = hold_lock_file_for_update(&lock, path,
-						      LOCK_DIE_ON_ERROR);
-
-	/* write signature */
-	write_or_die(bundle_fd, bundle_signature, strlen(bundle_signature));
-
-	/* init revs to list objects for pack-objects later */
-	save_commit_buffer = 0;
-	init_revisions(&revs, NULL);
-
-	/* write prerequisites */
 	memcpy(argv_boundary + 3, argv + 1, argc * sizeof(const char *));
 	argv_boundary[0] = "rev-list";
 	argv_boundary[1] = "--boundary";
@@ -241,7 +220,7 @@ int create_bundle(struct bundle_header *header, const char *path,
 			if (!get_sha1_hex(buffer + 1, sha1)) {
 				struct object *object = parse_object(sha1);
 				object->flags |= UNINTERESTING;
-				add_pending_object(&revs, object, buffer);
+				add_pending_object(revs, object, buffer);
 			}
 		} else if (!get_sha1_hex(buffer, sha1)) {
 			struct object *object = parse_object(sha1);
@@ -251,6 +230,37 @@ int create_bundle(struct bundle_header *header, const char *path,
 	fclose(rls_fout);
 	if (finish_command(&rls))
 		return error("rev-list died");
+	return 0;
+}
+
+int create_bundle(struct bundle_header *header, const char *path,
+		int argc, const char **argv)
+{
+	static struct lock_file lock;
+	int bundle_fd = -1;
+	int bundle_to_stdout;
+	const char **argv_pack = xmalloc(5 * sizeof(const char *));
+	int i, ref_count = 0;
+	struct rev_info revs;
+	struct child_process rls;
+
+	bundle_to_stdout = !strcmp(path, "-");
+	if (bundle_to_stdout)
+		bundle_fd = 1;
+	else
+		bundle_fd = hold_lock_file_for_update(&lock, path,
+						      LOCK_DIE_ON_ERROR);
+
+	/* write signature */
+	write_or_die(bundle_fd, bundle_signature, strlen(bundle_signature));
+
+	/* init revs to list objects for pack-objects later */
+	save_commit_buffer = 0;
+	init_revisions(&revs, NULL);
+
+	/* write prerequisites */
+	if (list_prerequisites(bundle_fd, &revs, argc, argv))
+		return -1;
 
 	/* write references */
 	argc = setup_revisions(argc, argv, &revs, NULL);
-- 
1.7.1.198.g8d802