enlightenment/src/bin/e_remote_main.c

/*
 * vim:ts=8:sw=3:sts=8:noexpandtab:cino=>5n-3f0^-2{2
 */
#include "e.h"

typedef struct _Opt Opt;

struct _Opt
{
   char     *opt;
   int       num_param;
   char     *desc;
   int       num_reply;
   E_Ipc_Op  opcode;
};

Opt opts[] = {
#define TYPE  E_REMOTE_OPTIONS
#include      "e_ipc_handlers.h"
#undef TYPE
};

static int _e_cb_signal_exit(void *data, int ev_type, void *ev);
static int _e_ipc_init(void);
static void _e_ipc_shutdown(void);
static int _e_ipc_cb_server_add(void *data, int type, void *event);
static int _e_ipc_cb_server_del(void *data, int type, void *event);
static int _e_ipc_cb_server_data(void *data, int type, void *event);
static void _e_help(void);

/* local subsystem globals */
static Ecore_Ipc_Server *_e_ipc_server  = NULL;
static const char *display_name = NULL;
static int reply_count = 0;
static int reply_expect = 0;

int
main(int argc, char **argv)
{
   int i;
   char *s, buf[1024];
   
   /* fix up DISPLAY to be :N.0 if no .screen is in it */
   s = getenv("DISPLAY");
   if (s)
     {
	char *p;
	
	p = strrchr(s, ':');
	if (!p)
	  {
	     snprintf(buf, sizeof(buf), "DISPLAY=%s:0.0", s);
	     putenv(strdup(buf));
	  }
	else
	  {
	     p = strrchr(p, '.');
	     if (!p)
	       {
		  snprintf(buf, sizeof(buf), "DISPLAY=%s.0", s);
		  putenv(strdup(buf));
	       }
	  }
     }
   
   /* handle some command-line parameters */
   display_name = (const char *)getenv("DISPLAY");
   for (i = 1; i < argc; i++)
     {
	if ((!strcmp(argv[i], "-display")) && (i < (argc - 1)))
	  {
	     i++;
	     display_name = argv[i];
	  }
	else if ((!strcmp(argv[i], "-h")) ||
		 (!strcmp(argv[i], "-help")) ||
		 (!strcmp(argv[i], "--h")) ||
		 (!strcmp(argv[i], "--help")))
	  {
	     _e_help();
	     exit(0);
	  }
     }
  
   /* basic ecore init */
   if (!ecore_init())
     {
	printf("ERROR: Enlightenment_remote cannot Initialize Ecore!\n"
	       "Perhaps you are out of memory?\n");
	exit(-1);
     }
   ecore_app_args_set(argc, (const char **)argv);
   /* setup a handler for when e is asked to exit via a system signal */
   if (!ecore_event_handler_add(ECORE_EVENT_SIGNAL_EXIT, _e_cb_signal_exit, NULL))
     {
	printf("ERROR: Enlightenment_remote cannot set up an exit signal handler.\n"
	       "Perhaps you are out of memory?\n");
	exit(-1);
     }
   /* init ipc */
   if (!ecore_ipc_init())
     {
	printf("ERROR: Enlightenment_remote cannot initialize the ipc system.\n"
	       "Perhaps you are out of memory?\n");
	exit(-1);
     }
   
   /* setup e ipc service */
   if (!_e_ipc_init())
     {
	printf("ERROR: Enlightenment_remote cannot set up the IPC socket.\n"
	       "Maybe try the '-display :0.0' option?\n");
	exit(-1);
     }
   e_ipc_codec_init();

   /* start our main loop */
   ecore_main_loop_begin();

   e_ipc_codec_shutdown();
   _e_ipc_shutdown();
   ecore_ipc_shutdown();
   ecore_shutdown();
   
   /* just return 0 to keep the compiler quiet */
   return 0;
}

/* local subsystem functions */
static int
_e_cb_signal_exit(void *data, int ev_type, void *ev)
{
   /* called on ctrl-c, kill (pid) (also SIGINT, SIGTERM and SIGQIT) */
   ecore_main_loop_quit();
   return 1;
}

static int
_e_ipc_init(void)
{
   char buf[1024];
   char *disp;
   
   disp = (char *)display_name;
   if (!disp) disp = ":0";
   snprintf(buf, sizeof(buf), "enlightenment-(%s)", disp);
   _e_ipc_server = ecore_ipc_server_connect(ECORE_IPC_LOCAL_USER, buf, 0, NULL);
   /* FIXME: we shoudl also try the generic ":0" if the display is ":0.0" */
   /* similar... */
   if (!_e_ipc_server) return 0;
   
   ecore_event_handler_add(ECORE_IPC_EVENT_SERVER_ADD, _e_ipc_cb_server_add, NULL);
   ecore_event_handler_add(ECORE_IPC_EVENT_SERVER_DEL, _e_ipc_cb_server_del, NULL);
   ecore_event_handler_add(ECORE_IPC_EVENT_SERVER_DATA, _e_ipc_cb_server_data, NULL);
   
   return 1;
}

static void
_e_ipc_shutdown(void)
{
   if (_e_ipc_server)
     {
	ecore_ipc_server_del(_e_ipc_server);
	_e_ipc_server = NULL;
     }
}

static int
_e_ipc_cb_server_add(void *data, int type, void *event)
{
   Ecore_Ipc_Event_Server_Add *e;
   char **argv, **params;
   int i, j, argc, process_count = 0;
   
   e = event;
   ecore_app_args_get(&argc, &argv);
   for (i = 1; i < argc; i++)
     {
	for (j = 0; j < (int)(sizeof(opts) / sizeof(Opt)); j++)
	  {
	     Opt *opt;
	     
	     opt = &(opts[j]);
	     if (!strcmp(opt->opt, argv[i]))
	       {
		  if (i >= (argc - opt->num_param))
		    {
		       printf("ERROR: option %s expects %i parameters\n",
			      opt->opt, opt->num_param);
		       exit(-1);
		    }
		  else
		    {
		       params = &(argv[i + 1]);
		       switch (opt->opcode)
			 {
#define TYPE  E_REMOTE_OUT
#include      "e_ipc_handlers.h"
#undef TYPE
			  default:
			    break;
			 }
		       process_count++;
		       reply_expect += opt->num_reply;
		       i += opt->num_param;
		    }
	       }
	  }
     }
   if (process_count <= 0) _e_help();
   if (reply_count >= reply_expect) ecore_main_loop_quit();
   return 1;
}

static int
_e_ipc_cb_server_del(void *data, int type, void *event)
{
   Ecore_Ipc_Event_Server_Del *e;
   
   e = event;
   return 1; 
}

static int
_e_ipc_cb_server_data(void *data, int type, void *event)
{
   Ecore_Ipc_Event_Server_Data *e;
   
   e = event;
   printf("REPLY <- BEGIN\n");
   switch (e->minor)
     {
#define TYPE  E_REMOTE_IN
#include      "e_ipc_handlers.h"
#undef TYPE
      default:
	 break;
     }
   printf("REPLY <- END\n");
   reply_count++;
   if (reply_count >= reply_expect) ecore_main_loop_quit();
   return 1;
}

static void
_e_help(void)
{
   int i, j;
   
   printf("OPTIONS:\n");
   printf("  -h This help\n");
   printf("  -help This help\n");
   printf("  --help This help\n");
   printf("  --h This help\n");
   printf("  -display OPT1 Connect to E running on display 'OPT1'\n");
   for (j = 0; j < (int)(sizeof(opts) / sizeof(Opt)); j++)
     {
	Opt *opt;
	
	opt = &(opts[j]);
	printf("  %s ", opt->opt);
	for (i = 0; i < opt->num_param; i++)
	  printf("OPT%i ", i + 1);
	printf("%s\n", opt->desc);
     }
}