From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christian Couder Subject: [PATCH v1 2/4] replace: use OPT_CMDMODE to handle modes Date: Sat, 26 Apr 2014 22:00:55 +0200 Message-ID: <20140426200058.21546.25686.chriscool@tuxfamily.org> References: <20140426194404.21546.82305.chriscool@tuxfamily.org> Cc: Junio C Hamano , git@vger.kernel.org To: Jeff King X-From: git-owner@vger.kernel.org Sat Apr 26 22:02:46 2014 Return-path: Envelope-to: gcvg-git-2@plane.gmane.org Received: from vger.kernel.org ([209.132.180.67]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1We8o8-0008Th-Vg for gcvg-git-2@plane.gmane.org; Sat, 26 Apr 2014 22:02:45 +0200 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751287AbaDZUB6 (ORCPT ); Sat, 26 Apr 2014 16:01:58 -0400 Received: from [194.158.98.45] ([194.158.98.45]:56642 "EHLO mail-3y.bbox.fr" rhost-flags-FAIL-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1750904AbaDZUB5 (ORCPT ); Sat, 26 Apr 2014 16:01:57 -0400 Received: from [127.0.1.1] (cha92-h01-128-78-31-246.dsl.sta.abo.bbox.fr [128.78.31.246]) by mail-3y.bbox.fr (Postfix) with ESMTP id 2921D65; Sat, 26 Apr 2014 22:01:35 +0200 (CEST) X-git-sha1: 127898c998b32ee8bbee52df3cff26de477f79e0 X-Mailer: git-mail-commits v0.5.2 In-Reply-To: <20140426194404.21546.82305.chriscool@tuxfamily.org> Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org Archived-At: From: Jeff King By using OPT_CMDMODE, the mutual exclusion between modes is taken care of for us. It also makes it easy for us to maintain a single variable with the mode, which makes its intent more clear. We can use a single switch() to make sure we have covered all of the modes. This ends up breaking even in code size, but the win will be much bigger when we start adding more modes. Signed-off-by: Jeff King Signed-off-by: Christian Couder --- builtin/replace.c | 49 +++++++++++++++++++++++++------------------------ 1 file changed, 25 insertions(+), 24 deletions(-) diff --git a/builtin/replace.c b/builtin/replace.c index 28db96f..29cf699 100644 --- a/builtin/replace.c +++ b/builtin/replace.c @@ -168,11 +168,17 @@ static int replace_object(const char *object_ref, const char *replace_ref, int cmd_replace(int argc, const char **argv, const char *prefix) { - int list = 0, delete = 0, force = 0; + int force = 0; const char *format = NULL; + enum { + MODE_UNSPECIFIED = 0, + MODE_LIST, + MODE_DELETE, + MODE_REPLACE + } cmdmode = MODE_UNSPECIFIED; struct option options[] = { - OPT_BOOL('l', "list", &list, N_("list replace refs")), - OPT_BOOL('d', "delete", &delete, N_("delete replace refs")), + OPT_CMDMODE('l', "list", &cmdmode, N_("list replace refs"), MODE_LIST), + OPT_CMDMODE('d', "delete", &cmdmode, N_("delete replace refs"), MODE_DELETE), OPT_BOOL('f', "force", &force, N_("replace the ref if it exists")), OPT_STRING(0, "format", &format, N_("format"), N_("use this format")), OPT_END() @@ -182,42 +188,37 @@ int cmd_replace(int argc, const char **argv, const char *prefix) argc = parse_options(argc, argv, prefix, options, git_replace_usage, 0); - if (!list && !delete) - if (!argc) - list = 1; + if (!cmdmode) + cmdmode = argc ? MODE_REPLACE : MODE_LIST; - if (list && delete) - usage_msg_opt("-l and -d cannot be used together", - git_replace_usage, options); - - if (format && !list) + if (format && cmdmode != MODE_LIST) usage_msg_opt("--format cannot be used when not listing", git_replace_usage, options); - if (force && (list || delete)) - usage_msg_opt("-f cannot be used with -d or -l", + if (force && cmdmode != MODE_REPLACE) + usage_msg_opt("-f only makes sense when writing a replacement", git_replace_usage, options); - /* Delete refs */ - if (delete) { + switch (cmdmode) { + case MODE_DELETE: if (argc < 1) usage_msg_opt("-d needs at least one argument", git_replace_usage, options); return for_each_replace_name(argv, delete_replace_ref); - } - /* Replace object */ - if (!list && argc) { + case MODE_REPLACE: if (argc != 2) usage_msg_opt("bad number of arguments", git_replace_usage, options); return replace_object(argv[0], argv[1], force); - } - /* List refs, even if "list" is not set */ - if (argc > 1) - usage_msg_opt("only one pattern can be given with -l", - git_replace_usage, options); + case MODE_LIST: + if (argc > 1) + usage_msg_opt("only one pattern can be given with -l", + git_replace_usage, options); + return list_replace_refs(argv[0], format); - return list_replace_refs(argv[0], format); + default: + die("BUG: invalid cmdmode %d", (int)cmdmode); + } } -- 1.9.1.636.g20d5f34