ls-remote: use parse-options api

Currently ls-remote uses a hand rolled parser for its command line
arguments.  Use the parse-options api instead of the hand rolled parser
to simplify the code and make it easier to add new arguments.  In
addition this improves the help message.

Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/ls-remote.c b/builtin/ls-remote.c
index db21e52..3a20378 100644 (file)
--- a/builtin/ls-remote.c
+++ b/builtin/ls-remote.c
@@ -3,9 +3,11 @@
 #include "transport.h"
 #include "remote.h"
 
-static const char ls_remote_usage[] =
-"git ls-remote [--heads] [--tags] [--refs] [--upload-pack=<exec>]\n"
-"                     [-q | --quiet] [--exit-code] [--get-url] [<repository> [<refs>...]]";
+static const char * const ls_remote_usage[] = {
+       N_("git ls-remote [--heads] [--tags] [--refs] [--upload-pack=<exec>]\n"
+          "                     [-q | --quiet] [--exit-code] [--get-url] [<repository> [<refs>...]]"),
+       NULL
+};
 
 /*
  * Is there one among the list of patterns that match the tail part
@@ -30,7 +32,6 @@ static int tail_match(const char **pattern, const char *path)
 
 int cmd_ls_remote(int argc, const char **argv, const char *prefix)
 {
-       int i;
        const char *dest = NULL;
        unsigned flags = 0;
        int get_url = 0;
@@ -43,59 +44,34 @@ int cmd_ls_remote(int argc, const char **argv, const char *prefix)
        struct transport *transport;
        const struct ref *ref;
 
-       if (argc == 2 && !strcmp("-h", argv[1]))
-               usage(ls_remote_usage);
+       struct option options[] = {
+               OPT__QUIET(&quiet, N_("do not print remote URL")),
+               OPT_STRING(0, "upload-pack", &uploadpack, N_("exec"),
+                          N_("path of git-upload-pack on the remote host")),
+               { OPTION_STRING, 0, "exec", &uploadpack, N_("exec"),
+                          N_("path of git-upload-pack on the remote host"),
+                          PARSE_OPT_HIDDEN },
+               OPT_BIT('t', "tags", &flags, N_("limit to tags"), REF_TAGS),
+               OPT_BIT('h', "heads", &flags, N_("limit to heads"), REF_HEADS),
+               OPT_BIT(0, "refs", &flags, N_("do not show peeled tags"), REF_NORMAL),
+               OPT_BOOL(0, "get-url", &get_url,
+                        N_("take url.<base>.insteadOf into account")),
+               OPT_SET_INT(0, "exit-code", &status,
+                           N_("exit with exit code 2 if no matching refs are found"), 2),
+               OPT_END()
+       };
 
-       for (i = 1; i < argc; i++) {
-               const char *arg = argv[i];
+       argc = parse_options(argc, argv, prefix, options, ls_remote_usage,
+                            PARSE_OPT_STOP_AT_NON_OPTION);
+       dest = argv[0];
 
-               if (*arg == '-') {
-                       if (starts_with(arg, "--upload-pack=")) {
-                               uploadpack = arg + 14;
-                               continue;
-                       }
-                       if (starts_with(arg, "--exec=")) {
-                               uploadpack = arg + 7;
-                               continue;
-                       }
-                       if (!strcmp("--tags", arg) || !strcmp("-t", arg)) {
-                               flags |= REF_TAGS;
-                               continue;
-                       }
-                       if (!strcmp("--heads", arg) || !strcmp("-h", arg)) {
-                               flags |= REF_HEADS;
-                               continue;
-                       }
-                       if (!strcmp("--refs", arg)) {
-                               flags |= REF_NORMAL;
-                               continue;
-                       }
-                       if (!strcmp("--quiet", arg) || !strcmp("-q", arg)) {
-                               quiet = 1;
-                               continue;
-                       }
-                       if (!strcmp("--get-url", arg)) {
-                               get_url = 1;
-                               continue;
-                       }
-                       if (!strcmp("--exit-code", arg)) {
-                               /* return this code if no refs are reported */
-                               status = 2;
-                               continue;
-                       }
-                       usage(ls_remote_usage);
-               }
-               dest = arg;
-               i++;
-               break;
+       if (argc > 1) {
+               int i;
+               pattern = xcalloc(argc, sizeof(const char *));
+               for (i = 1; i < argc; i++)
+                       pattern[i - 1] = xstrfmt("*/%s", argv[i]);
        }
 
-       if (argv[i]) {
-               int j;
-               pattern = xcalloc(argc - i + 1, sizeof(const char *));
-               for (j = i; j < argc; j++)
-                       pattern[j - i] = xstrfmt("*/%s", argv[j]);
-       }
        remote = remote_get(dest);
        if (!remote) {
                if (dest)