C++ poptSetOtherOptionHelp函数代码示例

static
void parse_opt(int argc, char **argv)
{
	int c;
	poptContext optCon;
	const char *no_arg;

	struct poptOption optionsTable[] = {
		{ "loops"  , 'n', POPT_ARGFLAG_SHOW_DEFAULT | POPT_ARG_INT,
		  &arg_loops , 0, "pp loops", "count" },
		{ "time"  , 't', POPT_ARGFLAG_SHOW_DEFAULT | POPT_ARG_INT,
		  &arg_maxtime, 0, "max time", "ms" },
		{ "maxsize"  , 0, POPT_ARGFLAG_SHOW_DEFAULT | POPT_ARG_INT,
		  &arg_maxmsize , 0, "maximal messagesize", "size" },

		{ "nokill" , 'k', POPT_ARGFLAG_OR | POPT_ARG_VAL,
		  &arg_nokill, 1, "Dont kill the server afterwards", NULL },

		{ "port" , 'p', POPT_ARGFLAG_SHOW_DEFAULT | POPT_ARG_STRING,
		  &arg_port, 0, "server port to use", "port" },

		{ "verbose"	, 'v', POPT_ARG_NONE,
		  NULL		, 'v', "increase verbosity", NULL },
		POPT_AUTOHELP
		POPT_TABLEEND
	};

	optCon = poptGetContext(NULL, argc, (const char **) argv, optionsTable, 0);

	poptSetOtherOptionHelp(optCon, "[serveraddr]");

	while ((c = poptGetNextOpt(optCon)) >= 0) {
		switch (c) { // c = poptOption.val;
		case 'v': arg_verbose++; break;
		}
	}

	if (c < -1) { /* an error occurred during option processing */
		fprintf(stderr, "%s: %s\n",
			poptBadOption(optCon, POPT_BADOPTION_NOALIAS),
			poptStrerror(c));
		poptPrintHelp(optCon, stderr, 0);
		exit(1);
	}

//	arg_1 = poptGetArg(optCon);
//	arg_2 = poptGetArg(optCon);
	arg_servername = poptGetArg(optCon);
	is_server = !arg_servername;

	no_arg = poptGetArg(optCon); // should return NULL
	if (no_arg) {
		fprintf(stderr, "%s: %s\n",
			no_arg, poptStrerror(POPT_ERROR_BADOPT));
		poptPrintHelp(optCon, stderr, 0);
		exit(1);
	}

	poptFreeContext(optCon);
}

static
void parse_opt(int argc, char **argv)
{
	int c;
	poptContext optCon;
	const char *no_arg;

	struct poptOption optionsTable[] = {
		{ "loops"  , 'n', POPT_ARGFLAG_SHOW_DEFAULT | POPT_ARG_INT,
		  &arg_loops , 0, "pp loops", "count" },
		{ "time"  , 't', POPT_ARGFLAG_SHOW_DEFAULT | POPT_ARG_INT,
		  &arg_maxtime, 0, "max time", "ms" },
		{ "maxsize"  , 0, POPT_ARGFLAG_SHOW_DEFAULT | POPT_ARG_INT,
		  &arg_maxmsize , 0, "maximal messagesize", "size" },

		{ "once" , '1', POPT_ARGFLAG_OR | POPT_ARG_VAL,
		  &arg_run_once, 1, "stop after one client", NULL },

		{ "verbose"	, 'v', POPT_ARG_NONE,
		  NULL		, 'v', "increase verbosity", NULL },
		POPT_AUTOHELP
		POPT_TABLEEND
	};

	optCon = poptGetContext(NULL, argc, (const char **) argv, optionsTable, 0);

	poptSetOtherOptionHelp(optCon, "[serveraddr]");

	while ((c = poptGetNextOpt(optCon)) >= 0) {
		switch (c) { // c = poptOption.val;
		case 'v': arg_verbose++; break;
		//default: fprintf(stderr, "unhandled popt value %d\n", c); break;
		}
	}

	if (c < -1) { /* an error occurred during option processing */
		fprintf(stderr, "%s: %s\n",
			poptBadOption(optCon, POPT_BADOPTION_NOALIAS),
			poptStrerror(c));
		poptPrintHelp(optCon, stderr, 0);
		exit(1);
	}

//	arg_1 = poptGetArg(optCon);
//	arg_2 = poptGetArg(optCon);
	/* if (arg_client)*/ {
		const char *server = poptGetArg(optCon);
		if (server) arg_server_addr = server;
	}

	no_arg = poptGetArg(optCon); // should return NULL
	if (no_arg) {
		fprintf(stderr, "%s: %s\n",
			no_arg, poptStrerror(POPT_ERROR_BADOPT));
		poptPrintHelp(optCon, stderr, 0);
		exit(1);
	}

	poptFreeContext(optCon);
}

void parse_opt(int argc, char **argv)
{
	int c;
	poptContext optCon;
	const char *no_arg;

	struct poptOption optionsTable[] = {
		{ "send" , 's', POPT_ARGFLAG_OR | POPT_ARG_VAL,
		  &arg_send, 1, "first send", NULL },

		{ "lport"	, 'l', POPT_ARGFLAG_SHOW_DEFAULT | POPT_ARG_INT,
		  &arg_listenport, 0, "listen on port", "port" },

		{ "lname"	, 'n', POPT_ARGFLAG_SHOW_DEFAULT | POPT_ARG_STRING,
		  &arg_listenname, 0, "listen on name", "name" },

		{ "verbose"	, 'v', POPT_ARG_NONE,
		  NULL		, 'v', "increase verbosity", NULL },
		POPT_AUTOHELP
		POPT_TABLEEND
	};

	optCon = poptGetContext(NULL, argc, (const char **) argv, optionsTable, 0);

	poptSetOtherOptionHelp(optCon, "[peer address]");

	while ((c = poptGetNextOpt(optCon)) >= 0) {
		switch (c) { // c = poptOption.val;
		case 'v': arg_verbose++; break;
		//default: fprintf(stderr, "unhandled popt value %d\n", c); break;
		}
	}

	if (c < -1) { /* an error occurred during option processing */
		fprintf(stderr, "%s: %s\n",
			poptBadOption(optCon, POPT_BADOPTION_NOALIAS),
			poptStrerror(c));
		poptPrintHelp(optCon, stderr, 0);
		exit(1);
	}

	{
		const char *s;
		s = poptGetArg(optCon);
		if (s) {
			arg_peer_str = s;
		}
	}

	no_arg = poptGetArg(optCon); // should return NULL
	if (no_arg) {
		fprintf(stderr, "%s: %s\n",
			no_arg, poptStrerror(POPT_ERROR_BADOPT));
		poptPrintHelp(optCon, stderr, 0);
		exit(1);
	}

	poptFreeContext(optCon);
}

int
main(int argc, const char *argv[])
{
  Socket* serverSock, *controlSock;
  int c;

  poptContext optCon = poptGetContext(NULL, argc, argv, options, 0);
  poptSetOtherOptionHelp(optCon, "configFile");

  while ((c = poptGetNextOpt(optCon)) >= 0) {
    switch (c) {
    case 'v':
      printf(V_STRING, VERSION);
      printf(COPYRIGHT);
      return 0;
    }
  }

  setup_logging (logfile_name, log_level);

  if (c < -1) {
    /* an error occurred during option processing */
    fprintf(stderr, "%s: %s\n",
      poptBadOption(optCon, POPT_BADOPTION_NOALIAS),
      poptStrerror(c));
    return -1;
  }

  loginfo (V_STRING, VERSION);
  loginfo (COPYRIGHT);

  struct sigaction new_action, old_action;
  new_action.sa_handler = sigpipe_handler;
  sigemptyset (&new_action.sa_mask);
  new_action.sa_flags = 0;
  sigaction (SIGPIPE, NULL, &old_action);
  if (old_action.sa_handler != SIG_IGN)
    sigaction (SIGPIPE, &new_action, NULL);

  prepare_stdin(NULL);

  eventloop_init();
  session = (Session*) malloc(sizeof(Session));
  memset(session, 0, sizeof(Session));

  session->state = ProxyState_PAUSED;

  serverSock = socket_server_new("proxy_server", listen_port, on_connect, NULL);
  controlSock = socket_server_new("proxy_server_control", listen_port + 1, on_control_connect, NULL);

  eventloop_on_stdin(stdin_handler, session);
  eventloop_run();

  socket_free(serverSock);
  socket_free(controlSock);

  return(0);
}

int main(int argc, const char **argv)
{
    NET_API_STATUS status;
    struct libnetapi_ctx *ctx = NULL;

    const char *hostname = NULL;
    const char *domain = NULL;
    uint8_t *buffer = NULL;

    poptContext pc;
    int opt;

    struct poptOption long_options[] = {
        POPT_AUTOHELP
        POPT_COMMON_LIBNETAPI_EXAMPLES
        POPT_TABLEEND
    };

    status = libnetapi_init(&ctx);
    if (status != 0) {
        return status;
    }

    pc = poptGetContext("getdc", argc, argv, long_options, 0);

    poptSetOtherOptionHelp(pc, "hostname domainname");
    while((opt = poptGetNextOpt(pc)) != -1) {
    }

    if (!poptPeekArg(pc)) {
        poptPrintHelp(pc, stderr, 0);
        goto out;
    }
    hostname = poptGetArg(pc);

    if (!poptPeekArg(pc)) {
        poptPrintHelp(pc, stderr, 0);
        goto out;
    }
    domain = poptGetArg(pc);

    /* NetGetDCName */

    status = NetGetDCName(hostname, domain, &buffer);
    if (status != 0) {
        printf("GetDcName failed with: %s\n", libnetapi_errstr(status));
    } else {
        printf("%s\n", (char *)buffer);
    }

out:
    NetApiBufferFree(buffer);
    libnetapi_free(ctx);
    poptFreeContext(pc);

    return status;
}

int main(int argc, const char **argv)
{
	NET_API_STATUS status;
	struct libnetapi_ctx *ctx = NULL;
	const char *hostname = NULL;
	const char *sharename = NULL;

	poptContext pc;
	int opt;

	struct poptOption long_options[] = {
		POPT_AUTOHELP
		POPT_COMMON_LIBNETAPI_EXAMPLES
		POPT_TABLEEND
	};

	status = libnetapi_init(&ctx);
	if (status != 0) {
		return status;
	}

	pc = poptGetContext("share_del", argc, argv, long_options, 0);

	poptSetOtherOptionHelp(pc, "hostname sharename");
	while((opt = poptGetNextOpt(pc)) != -1) {
	}

	if (!poptPeekArg(pc)) {
		poptPrintHelp(pc, stderr, 0);
		goto out;
	}
	hostname = poptGetArg(pc);

	if (!poptPeekArg(pc)) {
		poptPrintHelp(pc, stderr, 0);
		goto out;
	}
	sharename = poptGetArg(pc);

	/* NetShareDel */

	status = NetShareDel(hostname,
			     sharename,
			     0);
	if (status != 0) {
		printf("NetShareDel failed with: %s\n",
			libnetapi_get_error_string(ctx, status));
		goto out;
	}

 out:
	libnetapi_free(ctx);
	poptFreeContext(pc);

	return status;
}

int main(int argc, char *argv[]){
 char errbuf[PCAP_ERRBUF_SIZE], *device="any",*output_filename="/tmp/test.dump",*filter;
 const char *tmp;
 struct bpf_program fcode;
 int count=0;
 int timer=10;
 int c;
 poptContext context;
 struct poptOption optionsTable[] = {
  {"output",	'o',	POPT_ARG_STRING,	&output_filename,	'o'},
  {"count",	'c',	POPT_ARG_INT,		&count,			'c'},
  {"time",	't',	POPT_ARG_INT,		&timer,			't'},
  {NULL,0,0,NULL,0}
 };
 context = poptGetContext(NULL, argc, (const char **) argv, optionsTable, 0);
 poptSetOtherOptionHelp(context, "<tcpdump filter>");
 while (poptGetNextOpt(context) >= 0) {}
 filter = (char *)malloc(256);
 strcpy (filter,"");
 while ((tmp = poptGetArg(context))!=NULL) {
   if (strcmp(filter,"")) filter = strcat(filter," ");
   filter = strcat(filter,tmp);
 }
 if (strcmp(filter,"")==0) filter = "port 3306";
 poptFreeContext(context);

 printf("file=%s, count=%d, time=%d, filter=%s\n",output_filename,count,timer,filter);
 signal(SIGTERM, cleanup);
 signal(SIGALRM, cleanup);
 signal(SIGINT, cleanup);
 memset(errbuf,0,PCAP_ERRBUF_SIZE); 
 
descr = pcap_open_live(device,BUFSIZ,0,100,errbuf);
 if (descr == NULL) {
  fprintf(stderr, "Couldn't open device %s: %s\n", device, errbuf);
  return(2);
 }
 if (pcap_compile(descr, &fcode, filter, 0, 0) < 0){
  fprintf(stderr,"can not analyze filter:%s\n", filter);
  exit(1);
 }
 if (pcap_setfilter(descr,&fcode) == -1) {
  fprintf(stderr, "filter can not use: %s\n", filter);
  exit(1);
 }
 dumper = pcap_dump_open(descr,output_filename);
 alarm(timer);
 pcap_loop(descr,count,write_captured_packet,NULL);
 pcap_close(descr);
 pcap_dump_close(dumper);
 exit(0);
}

/** Process command line arguements and decide how to proceed.
 *  Includes explanatory text for inline help and self-documentation.
 */
int main( int argc, char *argv[] )
{
    int descend_flag = 0, hadoop_flag = 0, stats_flag = 0, verbose_flag = 0, json_flag = 0;
    int count = 0, ret_val = 0;
    g_dir_arg = "."; /// set the default directory argument to "here"
    poptContext pc;
    struct poptOption po[] = {
	{"descend", 'd', POPT_ARG_NONE, &descend_flag, 0, UNIMPL"Parallelise and descend into subdirectories.", NULL},
	{"stats",   's', POPT_ARG_NONE, &stats_flag,   0, "Print detailed statistics.", NULL},
	{"verbose", 'v', POPT_ARG_NONE, &verbose_flag, 0, UNIMPL"Expand statistics output for each subdirectory.", NULL},
	{"json",    'j', POPT_ARG_NONE, &json_flag,    0, UNIMPL"Write output in JSON format.", NULL},
	POPT_AUTOHELP
	POPT_TABLEEND
    };
    
    pc = poptGetContext(NULL, argc, (const char **)argv, po, 0);
    poptSetOtherOptionHelp(pc, "[directory]");
    
    while ( (count = poptGetNextOpt(pc) ) >= 0 ) {
	printf("poptGetNextOpt return val %d\n", count);
    }

    for ( count = 0 ; poptPeekArg(pc) != NULL ; ++count ) {
	asprintf(&g_dir_arg, (char*)poptGetArg(pc));
	
	if ( count > 0 ) {
	    poptPrintUsage(pc, stderr, 0);
	    goto EXITNOW;
	}
    }
    
    if ( descend_flag + hadoop_flag + stats_flag + verbose_flag + json_flag > 5 ) {
	poptPrintUsage(pc, stderr, 0);
	goto EXITNOW;
    } else {
	if ( descend_flag != POPT_ARG_NONE ) printf("%s: %s %s\n", PROGNAME, UNIMPL, "descend");
	else if ( stats_flag != POPT_ARG_NONE ) ret_val = getdirent(g_dir_arg);
	else if ( verbose_flag != POPT_ARG_NONE ) printf("%s: %s %s\n", PROGNAME, UNIMPL, "verbose");
	else if ( json_flag != POPT_ARG_NONE ) printf("%s: %s %s\n", PROGNAME, UNIMPL, "json");
	else ret_val = quickcount(g_dir_arg);
    }
    
    if ( ret_val == 0 ) { 
	exit(EXIT_SUCCESS);
    } else {
	goto EXITNOW;
    }

EXITNOW:
    exit(EXIT_FAILURE);
}

/* Show program help. */
static void show_help (poptContext ctx)
{
	size_t ix;

	show_banner ();
	poptSetOtherOptionHelp (ctx, mocp_summary);
	poptPrintHelp (ctx, stdout, 0);

	printf ("\nEnvironment variables:\n\n");
	for (ix = 0; ix < ARRAY_SIZE(environment_variables); ix += 1)
		printf ("  %-34s%s\n", environment_variables[ix].name,
		                       environment_variables[ix].desc);
	printf ("\n");
}

int main(int argc, const char *argv[])
{
	const char *config_file = get_dyn_CONFIGFILE();
	const char *sequence = "";
	poptContext pc;
	char *buff;
	TALLOC_CTX *ctx = talloc_stackframe();

	struct poptOption long_options[] = {
		POPT_AUTOHELP
		POPT_COMMON_VERSION
		POPT_TABLEEND
	};

	load_case_tables();

	pc = poptGetContext(NULL, argc, argv, long_options,
			    POPT_CONTEXT_KEEP_FIRST);
	poptSetOtherOptionHelp(pc, "[OPTION...] <sequence-string>");

	while(poptGetNextOpt(pc) != -1);

	setup_logging(poptGetArg(pc), true);

	sequence = poptGetArg(pc);

	if (sequence == NULL) {
		fprintf(stderr, "ERROR: missing sequence string\n");
		return 1;
	}

	dbf = x_stderr;
	DEBUGLEVEL = 0;
	AllowDebugChange = false;

	if (!lp_load(config_file,false,true,false,true)) {
		fprintf(stderr,"Error loading services.\n");
		return 1;
	}

	while(next_token_talloc(ctx, &sequence, &buff, NULL)) {
		printf("[%s]\n", buff);
	}

	talloc_free(ctx);

	return 0;
}

int main(int argc, const char *argv[])
{
        int 	c;

        char
	    	*fetch		= NULL,
	    	*convert	= NULL;

	poptContext pc;

	struct poptOption options[] = {
		USERLAND_RESERVED_OPTIONS
		{"fetch", 'f', POPT_ARG_STRING, &fetch, 0, "Fetch all wav files or specified wav file from the Palm", "[file|all]"},
		{"convert", 'c', POPT_ARG_STRING, &convert, 0, "Convert <file>.wav.pdb file to wav", "file"},
		POPT_TABLEEND
	};

	pc = poptGetContext("pilot-wav", argc, argv, options, 0);
	poptSetOtherOptionHelp(pc,"\n\n"
	"   Decodes Palm Voice Memo files to wav files you can read\n\n"
	"   Example arguments: \n"
	"      pilot-wav -p /dev/pilot -f MyVoiceMemo.wav.pdb\n"
	"      pilot-wav -c MyVoiceMemo.wav.pdb\n\n");

	if (argc < 2 ) {
		poptPrintUsage(pc,stderr,0);
		return 1;
	}


	while ((c = poptGetNextOpt(pc)) >= 0) {
		fprintf(stderr,"   ERROR: Unhandled option %d.\n",c);
		return 1;
        }

	if (c < -1) {
		plu_badoption(pc,c);
	}

	if(convert != NULL)
		pdb_to_wav(convert);

	if(fetch != NULL)
		do_fetch(fetch);

        return 0;
}

AirOptionCtx *air_option_context_new(
    const char     *helpstr,
    int            *argc,
    char         ***argv,
    AirOptionEntry *entries)
{
    AirOptionCtx *aoctx;
#if USE_GOPTION
    GOptionContext  *octx = NULL;
#elif USE_POPT
    poptContext octx = NULL;
    int i    = 0;
#endif

    aoctx = g_new0(AirOptionCtx, 1);
#if USE_GOPTION
    octx = g_option_context_new(helpstr);
    if (entries) {
        g_option_context_add_main_entries(octx, entries, NULL);
    }
#elif USE_POPT

    aoctx->options = g_array_sized_new(TRUE, TRUE, sizeof(AirOptionEntry), 64);
    if (entries) {

        for (i=0; !AF_OPTION_EMPTY(entries[i]); i++) {
            g_array_append_val(aoctx->options, entries[i]);
        }
    }
    octx = poptGetContext(NULL, *argc,  (const char **) *argv,
                          (AirOptionEntry *) aoctx->options->data, 0);

    poptSetOtherOptionHelp(octx, helpstr);
#endif

    aoctx->argc = argc;
    aoctx->argv = argv;
    aoctx->octx = octx;

    return aoctx;
}

poptContext process_options(int argc, const char **argv,
                            struct poptOption *options,
                            const char *help)
{
  int c;
  poptContext opts = poptGetContext(NULL, argc, argv, options, 0);
  poptSetOtherOptionHelp(opts, help);

  while ((c = poptGetNextOpt(opts)) >= 0) {
    /* no options require explicit handling */
  }

  if (c < -1) {
    fprintf(stderr, "%s: %s\n",
            poptBadOption(opts, POPT_BADOPTION_NOALIAS),
            poptStrerror(c));
    poptPrintUsage(opts, stderr, 0);
    exit(1);
  }

  return opts;
}

bool Utils::parse(const poptContext& pc)
{  // http://privatemisc.blogspot.com/2012/12/popt-basic-example.html
  poptSetOtherOptionHelp(pc, "[ARG...]");

  // process options and handle each val returned
  int val;
  while ((val = poptGetNextOpt(pc)) >= 0)
  {
  }

  // poptGetNextOpt returns -1 when the final argument has been parsed
  if (val != -1)
  {
    poptPrintUsage(pc, stderr, 0);

    // handle error
    switch (val)
    {
      case POPT_ERROR_NOARG:
        printf("Argument expected but missing for an option.\n");
        return false;
      case POPT_ERROR_BADOPT:
        printf("Failed to parse argument.\n");
        return false;
      case POPT_ERROR_BADNUMBER:
      case POPT_ERROR_OVERFLOW:
        printf("Option could not be converted to number\n");
        return false;
      default:
        printf("Unknown error in option processing\n");
        return false;
    }
  }

  poptFreeContext(pc);
  return true;
}

int main(int argc, const char **argv)
{
	poptContext pc;
	int opt;
	struct tevent_context *evt_ctx;
	struct messaging_context *msg_ctx;

	static struct poptOption long_options[] = {
		/* POPT_AUTOHELP */
		{ NULL, '\0', POPT_ARG_INCLUDE_TABLE, help_options,
		                        0, "Help options:", NULL },
		{ "timeout", 't', POPT_ARG_INT, &timeout, 't', 
		  "Set timeout value in seconds", "TIMEOUT" },

		POPT_COMMON_SAMBA
		POPT_TABLEEND
	};
	TALLOC_CTX *frame = talloc_stackframe();
	int ret = 0;

	load_case_tables();

	setup_logging(argv[0], DEBUG_STDOUT);

	/* Parse command line arguments using popt */

	pc = poptGetContext(
		"smbcontrol", argc, (const char **)argv, long_options, 0);

	poptSetOtherOptionHelp(pc, "[OPTION...] <destination> <message-type> "
			       "<parameters>");

	if (argc == 1)
		usage(pc);

	while ((opt = poptGetNextOpt(pc)) != -1) {
		switch(opt) {
		case 't':	/* --timeout */
			break;
		default:
			fprintf(stderr, "Invalid option\n");
			poptPrintHelp(pc, stderr, 0);
			break;
		}
	}

	/* We should now have the remaining command line arguments in
           argv.  The argc parameter should have been decremented to the
           correct value in the above switch statement. */

	argv = (const char **)poptGetArgs(pc);
	argc = 0;
	if (argv != NULL) {
		while (argv[argc] != NULL) {
			argc++;
		}
	}

	if (argc <= 1)
		usage(pc);

	lp_load_global(get_dyn_CONFIGFILE());

	/* Need to invert sense of return code -- samba
         * routines mostly return True==1 for success, but
         * shell needs 0. */ 

	if (!(evt_ctx = tevent_context_init(NULL)) ||
	    !(msg_ctx = messaging_init(NULL, evt_ctx))) {
		fprintf(stderr, "could not init messaging context\n");
		TALLOC_FREE(frame);
		exit(1);
	}

	ret = !do_command(evt_ctx, msg_ctx, argc, argv);
	TALLOC_FREE(frame);
	return ret;
}