Function copy

builtin/notes.c:578–654

}

static int copy(int argc, const char **argv, const char *prefix,
		struct repository *repo UNUSED)
{
	int retval = 0, force = 0, from_stdin = 0;
	const struct object_id *from_note, *note;
	const char *object_ref;
	struct object_id object, from_obj;
	struct notes_tree *t;
	const char *rewrite_cmd = NULL;
	struct option options[] = {
		OPT__FORCE(&force, N_("replace existing notes"), PARSE_OPT_NOCOMPLETE),
		OPT_BOOL(0, "stdin", &from_stdin, N_("read objects from stdin")),
		OPT_STRING(0, "for-rewrite", &rewrite_cmd, N_("command"),
			   N_("load rewriting config for <command> (implies "
			      "--stdin)")),
		OPT_END()
	};

	argc = parse_options(argc, argv, prefix, options, git_notes_copy_usage,
			     0);

	if (from_stdin || rewrite_cmd) {
		if (argc) {
			error(_("too many arguments"));
			usage_with_options(git_notes_copy_usage, options);
		} else {
			return notes_copy_from_stdin(force, rewrite_cmd);
		}
	}

	if (argc < 1) {
		error(_("too few arguments"));
		usage_with_options(git_notes_copy_usage, options);
	}
	if (2 < argc) {
		error(_("too many arguments"));
		usage_with_options(git_notes_copy_usage, options);
	}

	if (repo_get_oid(the_repository, argv[0], &from_obj))
		die(_("failed to resolve '%s' as a valid ref."), argv[0]);

	object_ref = 1 < argc ? argv[1] : "HEAD";

	if (repo_get_oid(the_repository, object_ref, &object))
		die(_("failed to resolve '%s' as a valid ref."), object_ref);

	t = init_notes_check("copy", NOTES_INIT_WRITABLE);
	note = get_note(t, &object);

	if (note) {
		if (!force) {
			retval = error(_("Cannot copy notes. Found existing "
				       "notes for object %s. Use '-f' to "
				       "overwrite existing notes"),
				       oid_to_hex(&object));
			goto out;
		}