tag: use OPT_CMDMODE

This is just a demonstration of how the code would look like; I do
not think it is particularly easier to read than before myself.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/tag.c b/builtin/tag.c
index af3af3f64935c3f92ed3f85acd44ed2ca2a35b3f..d8ae5aae2828c1e36a79f6182caaf6666ffc881b 100644 (file)
--- a/builtin/tag.c
+++ b/builtin/tag.c
@@ -436,18 +436,18 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
        struct ref_lock *lock;
        struct create_tag_options opt;
        char *cleanup_arg = NULL;
-       int annotate = 0, force = 0, lines = -1, list = 0,
-               delete = 0, verify = 0;
+       int annotate = 0, force = 0, lines = -1;
+       int cmdmode = 0;
        const char *msgfile = NULL, *keyid = NULL;
        struct msg_arg msg = { 0, STRBUF_INIT };
        struct commit_list *with_commit = NULL;
        struct option options[] = {
-               OPT_BOOLEAN('l', "list", &list, N_("list tag names")),
+               OPT_CMDMODE('l', "list", &cmdmode, N_("list tag names"), 'l'),
                { OPTION_INTEGER, 'n', NULL, &lines, N_("n"),
                                N_("print <n> lines of each tag message"),
                                PARSE_OPT_OPTARG, NULL, 1 },
-               OPT_BOOLEAN('d', "delete", &delete, N_("delete tags")),
-               OPT_BOOLEAN('v', "verify", &verify, N_("verify tags")),
+               OPT_CMDMODE('d', "delete", &cmdmode, N_("delete tags"), 'd'),
+               OPT_CMDMODE('v', "verify", &cmdmode, N_("verify tags"), 'v'),
 
                OPT_GROUP(N_("Tag creation options")),
                OPT_BOOLEAN('a', "annotate", &annotate,
@@ -489,22 +489,19 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
        }
        if (opt.sign)
                annotate = 1;
-       if (argc == 0 && !(delete || verify))
-               list = 1;
+       if (argc == 0 && !cmdmode)
+               cmdmode = 'l';
 
-       if ((annotate || msg.given || msgfile || force) &&
-           (list || delete || verify))
+       if ((annotate || msg.given || msgfile || force) && (cmdmode != 0))
                usage_with_options(git_tag_usage, options);
 
-       if (list + delete + verify > 1)
-               usage_with_options(git_tag_usage, options);
        finalize_colopts(&colopts, -1);
-       if (list && lines != -1) {
+       if (cmdmode == 'l' && lines != -1) {
                if (explicitly_enable_column(colopts))
                        die(_("--column and -n are incompatible"));
                colopts = 0;
        }
-       if (list) {
+       if (cmdmode == 'l') {
                int ret;
                if (column_active(colopts)) {
                        struct column_options copts;
@@ -523,9 +520,9 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
                die(_("--contains option is only allowed with -l."));
        if (points_at.nr)
                die(_("--points-at option is only allowed with -l."));
-       if (delete)
+       if (cmdmode == 'd')
                return for_each_tag_name(argv, delete_tag);
-       if (verify)
+       if (cmdmode == 'v')
                return for_each_tag_name(argv, verify_tag);
 
        if (msg.given || msgfile) {