main: add --vty-ref-mode, use vty_dump_xml_ref_mode()

Change-Id: Ia5abf7457ee7e97ec3fcd5520e5ef82ef808667a
Related: OS#5041
Depends: Ie2022a7f9e167e5ceacf15350c037dd43768ff40

1 files changed, 40 insertions, 5 deletions

diff --git a/stp/stp_main.c b/stp/stp_main.c
index 42f7108..c7a6272 100644
--- a/stp/stp_main.c
+++ b/stp/stp_main.c
@@ -89,17 +89,49 @@ static void print_help(void)
 	printf("  -D --daemonize		Fork the process into a background daemon\n");
 	printf("  -c --config-file filename	The config file to use. Default: ./osmo-stp.cfg\n");
 	printf("  -V --version			Print the version of OsmoSTP\n");
+
+	printf("\nVTY reference generation:\n");
+	printf("     --vty-ref-mode MODE        VTY reference generation mode (e.g. 'expert').\n");
+	printf("     --vty-ref-xml              Generate the VTY reference XML output and exit.\n");
+}
+
+static void handle_long_options(const char *prog_name, const int long_option)
+{
+	static int vty_ref_mode = VTY_REF_GEN_MODE_DEFAULT;
+
+	switch (long_option) {
+	case 1:
+		vty_ref_mode = get_string_value(vty_ref_gen_mode_names, optarg);
+		if (vty_ref_mode < 0) {
+			fprintf(stderr, "%s: Unknown VTY reference generation "
+				"mode '%s'\n", prog_name, optarg);
+			exit(2);
+		}
+		break;
+	case 2:
+		fprintf(stderr, "Generating the VTY reference in mode '%s' (%s)\n",
+			get_value_string(vty_ref_gen_mode_names, vty_ref_mode),
+			get_value_string(vty_ref_gen_mode_desc, vty_ref_mode));
+		vty_dump_xml_ref_mode(stdout, (enum vty_ref_gen_mode) vty_ref_mode);
+		exit(0);
+	default:
+		fprintf(stderr, "%s: error parsing cmdline options\n", prog_name);
+		exit(2);
+	}
 }
 
 static void handle_options(int argc, char **argv)
 {
 	while (1) {
 		int option_index = 0, c;
+		static int long_option = 0;
 		static const struct option long_options[] = {
 			{ "help", 0, 0, 'h' },
 			{ "daemonize", 0, 0, 'D' },
 			{ "config-file", 1, 0, 'c' },
 			{ "version", 0, 0, 'V' },
+			{ "vty-ref-mode", 1, &long_option, 1 },
+			{ "vty-ref-xml", 0, &long_option, 2 },
 			{ NULL, 0, 0, 0 }
 		};
 
@@ -108,6 +140,9 @@ static void handle_options(int argc, char **argv)
 			break;
 
 		switch (c) {
+		case 0:
+			handle_long_options(argv[0], long_option);
+			break;
 		case 'h':
 			print_help();
 			exit(0);
@@ -176,11 +211,6 @@ int main(int argc, char **argv)
 	vty_info.tall_ctx = tall_stp_ctx;
 	vty_init(&vty_info);
 
-	handle_options(argc, argv);
-
-	fputs(stp_copyright, stdout);
-	fputs("\n", stdout);
-
 	OSMO_ASSERT(osmo_ss7_init() == 0);
 	osmo_fsm_log_addr(false);
 	logging_vty_add_cmds();
@@ -191,6 +221,11 @@ int main(int argc, char **argv)
 	osmo_fsm_vty_add_cmds();
 	osmo_talloc_vty_add_cmds();
 
+	handle_options(argc, argv);
+
+	fputs(stp_copyright, stdout);
+	fputs("\n", stdout);
+
 	rc = vty_read_config_file(cmdline_config.config_file, NULL);
 	if (rc < 0) {
 		fprintf(stderr, "Failed to parse the config file '%s'\n",