Merge pull request #2974 from libgit2/cmn/clone-everything

Make sure to pack referenced objects for non-branches

include/git2/pack.h

@@ -127,6 +127,18 @@ GIT_EXTERN(int) git_packbuilder_insert_commit(git_packbuilder *pb, const git_oid
  */
 GIT_EXTERN(int) git_packbuilder_insert_walk(git_packbuilder *pb, git_revwalk *walk);
 
+/**
+ * Recursively insert an object and its referenced objects
+ *
+ * Insert the object as well as any object it references.
+ *
+ * @param pb the packbuilder
+ * @param id the id of the root object to insert
+ * @param name optional name for the object
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_packbuilder_insert_recur(git_packbuilder *pb, const git_oid *id, const char *name);
+
 /**
  * Write the contents of the packfile to an in-memory buffer
  *

src/pack-objects.c

@@ -1404,6 +1404,42 @@ int git_packbuilder_insert_tree(git_packbuilder *pb, const git_oid *oid)
 	return error;
 }
 
+int git_packbuilder_insert_recur(git_packbuilder *pb, const git_oid *id, const char *name)
+{
+	git_object *obj;
+	int error;
+
+	assert(pb && id);
+
+	if ((error = git_object_lookup(&obj, pb->repo, id, GIT_OBJ_ANY)) < 0)
+		return error;
+
+	switch (git_object_type(obj)) {
+	case GIT_OBJ_BLOB:
+		error = git_packbuilder_insert(pb, id, name);
+		break;
+	case GIT_OBJ_TREE:
+		error = git_packbuilder_insert_tree(pb, id);
+		break;
+	case GIT_OBJ_COMMIT:
+		error = git_packbuilder_insert_commit(pb, id);
+		break;
+	case GIT_OBJ_TAG:
+		if ((error = git_packbuilder_insert(pb, id, name)) < 0)
+			goto cleanup;
+		error = git_packbuilder_insert_recur(pb, git_tag_target_id((git_tag *) obj), NULL);
+		break;
+
+	default:
+		giterr_set(GITERR_INVALID, "unknown object type");
+		error = -1;
+	}
+
+cleanup:
+	git_object_free(obj);
+	return error;
+}
+
 uint32_t git_packbuilder_object_count(git_packbuilder *pb)
 {
 	return pb->nr_objects;

src/transports/local.c

@@ -544,7 +544,8 @@ static int local_download_pack(
 					error = 0;
 			}
 		} else {
-			error = git_packbuilder_insert(pack, &rhead->oid, rhead->name);
+			/* Tag or some other wanted object. Add it on its own */
+			error = git_packbuilder_insert_recur(pack, &rhead->oid, rhead->name);
 		}
 		git_object_free(obj);
 		if (error < 0)

src/tree.c

@@ -858,7 +858,7 @@ int git_tree_entry_bypath(
 
 	if (entry == NULL) {
 		giterr_set(GITERR_TREE,
-			"The path '%s' does not exist in the given tree", path);
+			   "the path '%.*s' does not exist in the given tree", filename_len, path);
 		return GIT_ENOTFOUND;
 	}
 
@@ -868,7 +868,7 @@ int git_tree_entry_bypath(
 		 * then this entry *must* be a tree */
 		if (!git_tree_entry__is_tree(entry)) {
 			giterr_set(GITERR_TREE,
-				"The path '%s' does not exist in the given tree", path);
+				   "the path '%.*s' exists but is not a tree", filename_len, path);
 			return GIT_ENOTFOUND;
 		}
 

tests/clone/nonetwork.c

@@ -246,6 +246,51 @@ void test_clone_nonetwork__can_detached_head(void)
 	cl_fixture_cleanup("./foo1");
 }
 
+void test_clone_nonetwork__clone_tag_to_tree(void)
+{
+	git_repository *stage;
+	git_index_entry entry;
+	git_index *index;
+	git_odb *odb;
+	git_oid tree_id;
+	git_tree *tree;
+	git_reference *tag;
+	git_tree_entry *tentry;
+	const char *file_path = "some/deep/path.txt";
+	const char *file_content = "some content\n";
+	const char *tag_name = "refs/tags/tree-tag";
+
+	stage = cl_git_sandbox_init("testrepo.git");
+	cl_git_pass(git_repository_odb(&odb, stage));
+	cl_git_pass(git_index_new(&index));
+
+	memset(&entry, 0, sizeof(git_index_entry));
+	entry.path = file_path;
+	entry.mode = GIT_FILEMODE_BLOB;
+	cl_git_pass(git_odb_write(&entry.id, odb, file_content, strlen(file_content), GIT_OBJ_BLOB));
+
+	cl_git_pass(git_index_add(index, &entry));
+	cl_git_pass(git_index_write_tree_to(&tree_id, index, stage));
+	cl_git_pass(git_reference_create(&tag, stage, tag_name, &tree_id, 0, NULL));
+	git_reference_free(tag);
+	git_odb_free(odb);
+	git_index_free(index);
+
+	g_options.local = GIT_CLONE_NO_LOCAL;
+	cl_git_pass(git_clone(&g_repo, cl_git_path_url(git_repository_path(stage)), "./foo", &g_options));
+	git_repository_free(stage);
+
+	cl_git_pass(git_reference_lookup(&tag, g_repo, tag_name));
+	cl_git_pass(git_tree_lookup(&tree, g_repo, git_reference_target(tag)));
+	git_reference_free(tag);
+
+	cl_git_pass(git_tree_entry_bypath(&tentry, tree, file_path));
+	git_tree_entry_free(tentry);
+	git_tree_free(tree);
+
+	cl_fixture_cleanup("testrepo.git");
+}
+
 static void assert_correct_reflog(const char *name)
 {
 	git_reflog *log;