upload-pack.c: use parse-options API

Use the parse-options API rather than a hand-rolled option parser.

Description for --stateless-rpc and --advertise-refs come from
42526b4 (Add stateless RPC options to upload-pack,
receive-pack, 2009-10-30).

Signed-off-by: Antoine Queru <antoine.queru@grenoble-inp.org>
Signed-off-by: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/git-upload-pack.txt

@@ -9,8 +9,8 @@ git-upload-pack - Send objects packed back to git-fetch-pack
 SYNOPSIS
 --------
 [verse]
-'git-upload-pack' [--strict] [--timeout=<n>] <directory>
-
+'git-upload-pack' [--[no-]strict] [--timeout=<n>] [--stateless-rpc]
+		  [--advertise-refs] <directory>
 DESCRIPTION
 -----------
 Invoked by 'git fetch-pack', learns what
@@ -25,12 +25,22 @@ repository.  For push operations, see 'git send-pack'.
 OPTIONS
 -------
 
---strict::
+--[no-]strict::
 	Do not try <directory>/.git/ if <directory> is no Git directory.
 
 --timeout=<n>::
 	Interrupt transfer after <n> seconds of inactivity.
 
+--stateless-rpc::
+	Perform only a single read-write cycle with stdin and stdout.
+	This fits with the HTTP POST request processing model where
+	a program may read the request, write a response, and must exit.
+
+--advertise-refs::
+	Only the initial ref advertisement is output, and the program exits
+	immediately. This fits with the HTTP GET request model, where
+	no request content is received but a response must be produced.
+
 <directory>::
 	The repository to sync from.
 

upload-pack.c

@@ -14,8 +14,12 @@
 #include "sigchain.h"
 #include "version.h"
 #include "string-list.h"
+#include "parse-options.h"
 
-static const char upload_pack_usage[] = "git upload-pack [--strict] [--timeout=<n>] <dir>";
+static const char * const upload_pack_usage[] = {
+	N_("git upload-pack [<options>] <dir>"),
+	NULL
+};
 
 /* Remember to update object flag allocation in object.h */
 #define THEY_HAVE	(1u << 11)
@@ -816,11 +820,21 @@ static int upload_pack_config(const char *var, const char *value, void *unused)
 	return parse_hide_refs_config(var, value, "uploadpack");
 }
 
-int main(int argc, char **argv)
+int main(int argc, const char **argv)
 {
-	char *dir;
-	int i;
+	const char *dir;
 	int strict = 0;
+	struct option options[] = {
+		OPT_BOOL(0, "stateless-rpc", &stateless_rpc,
+			 N_("quit after a single request/response exchange")),
+		OPT_BOOL(0, "advertise-refs", &advertise_refs,
+			 N_("exit immediately after intial ref advertisement")),
+		OPT_BOOL(0, "strict", &strict,
+			 N_("do not try <directory>/.git/ if <directory> is no Git directory")),
+		OPT_INTEGER(0, "timeout", &timeout,
+			    N_("interrupt transfer after <n> seconds of inactivity")),
+		OPT_END()
+	};
 
 	git_setup_gettext();
 
@@ -828,40 +842,17 @@ int main(int argc, char **argv)
 	git_extract_argv0_path(argv[0]);
 	check_replace_refs = 0;
 
-	for (i = 1; i < argc; i++) {
-		char *arg = argv[i];
+	argc = parse_options(argc, argv, NULL, options, upload_pack_usage, 0);
 
-		if (arg[0] != '-')
-			break;
-		if (!strcmp(arg, "--advertise-refs")) {
-			advertise_refs = 1;
-			continue;
-		}
-		if (!strcmp(arg, "--stateless-rpc")) {
-			stateless_rpc = 1;
-			continue;
-		}
-		if (!strcmp(arg, "--strict")) {
-			strict = 1;
-			continue;
-		}
-		if (starts_with(arg, "--timeout=")) {
-			timeout = atoi(arg+10);
-			daemon_mode = 1;
-			continue;
-		}
-		if (!strcmp(arg, "--")) {
-			i++;
-			break;
-		}
-	}
+	if (argc != 1)
+		usage_with_options(upload_pack_usage, options);
 
-	if (i != argc-1)
-		usage(upload_pack_usage);
+	if (timeout)
+		daemon_mode = 1;
 
 	setup_path();
 
-	dir = argv[i];
+	dir = argv[0];
 
 	if (!enter_repo(dir, strict))
 		die("'%s' does not appear to be a git repository", dir);