rnd-19981002-1

[rocksndiamonds.git] / src / main.c

diff --git a/src/main.c b/src/main.c
index 4b1a8c64ac0da60cc1283569cef6e4662568e15c..66f85d38f8505d7c5405c917ec9e27cf2be0cdf4 100644 (file)
--- a/src/main.c
+++ b/src/main.c
@@ -17,6 +17,7 @@
 #include "events.h"
 #include "sound.h"
 #include "joystick.h"
+#include "misc.h"
 
 #ifdef MSDOS
 #include <fcntl.h>
@@ -45,8 +46,12 @@ char        *joystick_device_name[2] = { DEV_JOYSTICK_0, DEV_JOYSTICK_1 };
 char          *level_directory = LEVEL_PATH;
 int            width, height;
 
+char          *display_name = NULL;
 char          *server_host = NULL;
 int            server_port = 0;
+int            networking = FALSE;
+int            standalone = TRUE;
+int            verbose = FALSE;
 
 int            game_status = MAINMENU;
 int            game_emulation = EMU_NONE;
@@ -66,7 +71,6 @@ int           fading_on = FALSE;
 int            autorecord_on = FALSE;
 int            joystick_nr = 0;
 int            quick_doors = FALSE;
-int            networking = FALSE;
 
 BOOL           redraw[MAX_BUF_XSIZE][MAX_BUF_YSIZE];
 int            redraw_x1 = 0, redraw_y1 = 0;
@@ -189,13 +193,151 @@ int background_loop[] =
 };
 int num_bg_loops = sizeof(background_loop)/sizeof(int);
 
-char           *progname;
+char           *program_name;
+
+#define MAX_OPTION_LEN 1024
+
+static void fatal_option()
+{
+  fprintf(stderr,"Try '%s --help' for more information.\n",
+         program_name);
+  exit(1);
+}
+
+static void fatal_unrecognized_option(char *option)
+{
+  fprintf(stderr,"%s: unrecognized option '%s'\n",
+         program_name, option);
+  fatal_option();
+}
+
+static void fatal_option_requires_argument(char *option)
+{
+  fprintf(stderr,"%s: option '%s' requires an argument\n",
+         program_name, option);
+  fatal_option();
+}
+
+static void fatal_invalid_option_argument(char *option)
+{
+  fprintf(stderr,"%s: option '%s' has invalid argument\n",
+         program_name, option);
+  fatal_option();
+}
+
+static void fatal_too_many_arguments()
+{
+  fprintf(stderr,"%s: too many arguments\n",
+         program_name);
+  fatal_option();
+}
+
+extern void fatal(char *);
 
 int main(int argc, char *argv[])
 {
-  progname = argv[0];
+  char **options_left = &argv[1];
+
+  program_name = (strrchr(argv[0],'/') ? strrchr(argv[0],'/') + 1 : argv[0]);
 
+  while (*options_left)
+  {
+    char option_str[MAX_OPTION_LEN];
+    char *option = options_left[0];
+    char *next_option = options_left[1];
+    char *option_arg = NULL;
+    int option_len = strlen(option);
 
+    strcpy(option_str, option);                        /* copy argument into buffer */
+    option = option_str;
+
+    if (strcmp(option, "--") == 0)             /* stop scanning arguments */
+      break;
+
+    if (option_len >= MAX_OPTION_LEN)
+      fatal_unrecognized_option(option);
+
+    if (strncmp(option, "--", 2) == 0)         /* treat '--' like '-' */
+      option++;
+
+    option_arg = strchr(option, '=');
+    if (option_arg == NULL)                    /* no '=' in option */
+      option_arg = next_option;
+    else
+    {
+      *option_arg++ = '\0';                    /* cut argument from option */
+      if (*option_arg == '\0')                 /* no argument after '=' */
+       fatal_invalid_option_argument(option);
+    }
+
+    option_len = strlen(option);
+
+    if (strcmp(option, "-") == 0)
+      fatal_unrecognized_option(option);
+    else if (strncmp(option, "-help", option_len) == 0)
+    {
+      printf("Usage: %s [options] [server.name [port]]\n"
+            "Options:\n"
+            "  -d, --display machine:0       X server display\n"
+            "  -l, --levels directory        alternative level directory\n"
+            "  -v, --verbose                 verbose mode\n",
+            program_name);
+      exit(0);
+    }
+    else if (strncmp(option, "-display", option_len) == 0)
+    {
+      if (option_arg == NULL)
+       fatal_option_requires_argument(option_str);
+
+      display_name = option_arg;
+      if (option_arg == next_option)
+       options_left++;
+
+      printf("--display == '%s'\n", display_name);
+    }
+    else if (strncmp(option, "-levels", option_len) == 0)
+    {
+      if (option_arg == NULL)
+       fatal_option_requires_argument(option_str);
+
+      level_directory = option_arg;
+      if (option_arg == next_option)
+       options_left++;
+
+      printf("--levels == '%s'\n", level_directory);
+    }
+    else if (strncmp(option, "-verbose", option_len) == 0)
+    {
+      printf("--verbose\n");
+
+      verbose = TRUE;
+    }
+    else if (*option == '-')
+      fatal_unrecognized_option(option_str);
+    else if (server_host == NULL)
+    {
+      server_host = *options_left;
+
+      printf("server.name == '%s'\n", server_host);
+    }
+    else if (server_port == 0)
+    {
+      server_port = atoi(*options_left);
+      if (server_port < 1024)
+        fatal("Bad port number");
+
+      printf("port == %d\n", server_port);
+    }
+    else
+      fatal_too_many_arguments();
+
+    options_left++;
+  }
+
+  /*
+  printf("All went fine -- exiting\n");
+  exit(0);
+  */
 
   /*
   if (argc>1)
@@ -203,13 +345,13 @@ int main(int argc, char *argv[])
     */
 
 
-
+    /*
   if (argc > 1)
     server_host = argv[1];
 
   if (argc > 2)
     server_port = atoi(argv[2]);
-
+    */
 
 
 #ifdef MSDOS