pespin has submitted this change. ( https://gerrit.osmocom.org/c/osmo-uecups/+/27746 )
Change subject: Add optarg support ......................................................................
Add optarg support
Change-Id: I88c95c27d20f1da8dc2ce967197b58c876b42c59 --- M daemon/main.c 1 file changed, 96 insertions(+), 0 deletions(-)
Approvals: Jenkins Builder: Verified fixeria: Looks good to me, but someone else must approve daniel: Looks good to me, approved
diff --git a/daemon/main.c b/daemon/main.c index 014e28a..9f1885f 100644 --- a/daemon/main.c +++ b/daemon/main.c @@ -1,4 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0 */ +#define _GNU_SOURCE +#include <getopt.h> #include <unistd.h> #include <stdint.h> #include <stdbool.h> @@ -752,6 +754,98 @@ .num_cat = ARRAY_SIZE(log_categories), };
+static void print_help() +{ + printf("Some useful options:\n"); + printf(" -h --help is printing this text.\n"); + printf(" -c --config-file filename The config file to use.\n"); + printf(" -s --disable-color\n"); + printf(" -D --daemonize Fork the process into a background daemon\n"); + printf(" -V --version Print the version number\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 struct option long_options[] = { + {"help", 0, 0, 'h'}, + {"config-file", 1, 0, 'c'}, + {"daemonize", 0, 0, 'D'}, + {"version", 0, 0, 'V'}, + {"disable-color", 0, 0, 's'}, + {"vty-ref-mode", 1, &long_option, 1}, + {"vty-ref-xml", 0, &long_option, 2}, + {0, 0, 0, 0}, + }; + + c = getopt_long(argc, argv, "hc:sVD", long_options, &option_index); + + if (c == -1) + break; + + switch (c) { + case 'h': + print_help(); + exit(0); + break; + case 0: + handle_long_options(argv[0], long_option); + break; + case 'c': + g_config_file = talloc_strdup(g_tall_ctx, optarg); + break; + case 's': + log_set_use_color(osmo_stderr_target, 0); + break; + case 'V': + print_version(1); + exit(0); + break; + case 'D': + g_daemonize = 1; + break; + default: + /* ignore */ + break; + }; + } + if (argc > optind) { + fprintf(stderr, "Unsupported positional arguments on command line\n"); + exit(2); + } +} + int main(int argc, char **argv) { int rc; @@ -775,6 +869,8 @@ rate_ctr_init(g_tall_ctx); gtpud_vty_init();
+ handle_options(argc, argv); + init_netns();
rc = vty_read_config_file(g_config_file, NULL);
-
pespin