Import option handler from ponymap

1 files changed, 33 insertions, 48 deletions

diff --git a/zyklonb.c b/zyklonb.c
index 257de7d..f9624b9 100644
--- a/zyklonb.c
+++ b/zyklonb.c
@@ -1,7 +1,7 @@
 /*
  * zyklonb.c: the experimental IRC bot
  *
- * Copyright (c) 2014, Přemysl Janouch <p.janouch@gmail.com>
+ * Copyright (c) 2014 - 2015, Přemysl Janouch <p.janouch@gmail.com>
  * All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for any
@@ -2150,65 +2150,50 @@ on_signal_pipe_readable (const struct pollfd *fd, struct bot_context *ctx)
 	}
 }
 
-static void
-print_usage (const char *program_name)
-{
-	fprintf (stderr,
-		"Usage: %s [OPTION]...\n"
-		"Experimental IRC bot.\n"
-		"\n"
-		"  -d, --debug     run in debug mode\n"
-		"  -h, --help      display this help and exit\n"
-		"  -V, --version   output version information and exit\n"
-		"  --write-default-cfg [filename]\n"
-		"                  write a default configuration file and exit\n",
-		program_name);
-}
-
 int
 main (int argc, char *argv[])
 {
-	const char *invocation_name = argv[0];
 	str_vector_init (&g_original_argv);
 	str_vector_add_vector (&g_original_argv, argv);
 
-	static struct option opts[] =
+	static const struct opt opts[] =
 	{
-		{ "debug",             no_argument,       NULL, 'd' },
-		{ "help",              no_argument,       NULL, 'h' },
-		{ "version",           no_argument,       NULL, 'V' },
-		{ "write-default-cfg", optional_argument, NULL, 'w' },
-		{ NULL,                0,                 NULL,  0  }
+		{ 'd', "debug", NULL, 0, "run in debug mode" },
+		{ 'h', "help", NULL, 0, "display this help and exit" },
+		{ 'V', "version", NULL, 0, "output version information and exit" },
+		{ 'w', "write-default-cfg", "FILENAME",
+		  OPT_OPTIONAL_ARG | OPT_LONG_ONLY,
+		  "write a default configuration file and exit" },
+		{ 0, NULL, NULL, 0, NULL }
 	};
 
-	while (1)
-	{
-		int c, opt_index;
+	struct opt_handler oh;
+	opt_handler_init (&oh, argc, argv, opts, NULL, "Experimental IRC bot.");
 
-		c = getopt_long (argc, argv, "dhV", opts, &opt_index);
-		if (c == -1)
-			break;
-
-		switch (c)
-		{
-		case 'd':
-			g_debug_mode = true;
-			break;
-		case 'h':
-			print_usage (invocation_name);
-			exit (EXIT_SUCCESS);
-		case 'V':
-			printf (PROGRAM_NAME " " PROGRAM_VERSION "\n");
-			exit (EXIT_SUCCESS);
-		case 'w':
-			call_write_default_config (optarg, g_config_table);
-			exit (EXIT_SUCCESS);
-		default:
-			print_error ("wrong options");
-			exit (EXIT_FAILURE);
-		}
+	int c;
+	while ((c = opt_handler_get (&oh)) != -1)
+	switch (c)
+	{
+	case 'd':
+		g_debug_mode = true;
+		break;
+	case 'h':
+		opt_handler_usage (&oh, stdout);
+		exit (EXIT_SUCCESS);
+	case 'V':
+		printf (PROGRAM_NAME " " PROGRAM_VERSION "\n");
+		exit (EXIT_SUCCESS);
+	case 'w':
+		call_write_default_config (optarg, g_config_table);
+		exit (EXIT_SUCCESS);
+	default:
+		print_error ("wrong options");
+		opt_handler_usage (&oh, stderr);
+		exit (EXIT_FAILURE);
 	}
 
+	opt_handler_free (&oh);
+
 	print_status (PROGRAM_NAME " " PROGRAM_VERSION " starting");
 	setup_signal_handlers ();