C++ LOCAL_COPY函数代码示例

//Android
void FSinOscUGenInternal::processBlock(bool& shouldDelete, const unsigned int blockID, const int channel) throw()
{	
	float* outputSamples = uGenOutput.getSampleData();
	float newFreq = *(inputs[Freq].processBlock(shouldDelete, blockID, channel));
	double y0;
	
	LOCAL_DECLARE(double, b1);
	LOCAL_DECLARE(double, y1);
	LOCAL_DECLARE(double, y2);
	
	if(newFreq != currentFreq)
	{
		currentFreq = newFreq;
		
		double initialPhase;
		
		if((1.0-abs(y1)) < 0.00001)
		{
			initialPhase = y1 > 0.0 ? piOverTwo : -piOverTwo;
		}
		else
		{
			initialPhase = asin(y1);
			// based on the trajectory predict which solution of asin(y1) is correct..
			if(y2 >= y1)
			{
				double piVersion = y1 > 0.0 ? pi : -pi;			
				initialPhase = piVersion - initialPhase;
			}
		}
		
		double w = currentFreq * twoPi * UGen::getReciprocalSampleRate();
		
		b1 = zap(2. * cos(w));
		y1 = zap(sin(initialPhase));
		y2 = zap(sin(initialPhase-w));
	}
	
	int numSamplesToProcess = uGenOutput.getBlockSize();
	for(int i = 0; i < numSamplesToProcess; ++i)
	{
		y0 = b1 * y1 - y2;
		outputSamples[i] = y0;// = b1 * y1 - y2; 
		y2 = y1; 
		y1 = y0;
	}
	
	y1 = zap(y1);
	y2 = zap(y2);
	LOCAL_COPY(b1);
	LOCAL_COPY(y1);
	LOCAL_COPY(y2);
}

/*
 * mr_capab - CAPAB message handler
 *      parv[1] = space-separated list of capabilities
 *
 */
static int
mr_capab(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
	struct Capability *cap;
	int i;
	char *p;
	char *s;
	/* ummm, this shouldn't happen. Could argue this should be logged etc. */
	if (client_p->localClient == NULL)
		return 0;
	if (client_p->user)
		return 0;
	/* CAP_TS6 is set in PASS, so is valid.. */
	if ((client_p->localClient->caps & ~CAP_TS6) != 0) {
		exit_client(client_p, client_p, client_p, "CAPAB received twice");
		return 0;
	} else
		client_p->localClient->caps |= CAP_CAP;
	rb_free(client_p->localClient->fullcaps);
	client_p->localClient->fullcaps = rb_strdup(parv[1]);
	for (i = 1; i < parc; i++) {
		char *t = LOCAL_COPY(parv[i]);
		for (s = rb_strtok_r(t, " ", &p); s; s = rb_strtok_r(NULL, " ", &p)) {
			for (cap = captab; cap->name; cap++) {
				if (!irccmp(cap->name, s)) {
					client_p->localClient->caps |= cap->cap;
					break;
				}
			}
		}
	}
	return 0;
}

static int
me_gcap(struct Client *client_p, struct Client *source_p,
        int parc, const char *parv[])
{
	struct Capability *cap;
	char *t = LOCAL_COPY(parv[1]);
	char *s;
	char *p;
	if (!IsServer(source_p))
		return 0;
	/* already had GCAPAB?! */
	if (!EmptyString(source_p->serv->fullcaps)) {
		source_p->serv->caps = 0;
		rb_free(source_p->serv->fullcaps);
	}
	source_p->serv->fullcaps = rb_strdup(parv[1]);
	for (s = rb_strtok_r(t, " ", &p); s; s = rb_strtok_r(NULL, " ", &p)) {
		for (cap = captab; cap->name; cap++) {
			if (!irccmp(cap->name, s)) {
				source_p->serv->caps |= cap->cap;
				break;
			}
		}
	}
	return 0;
}

/*
 * create_timer_ref:  returns the lowest unused reference number for a timer
 * All refnums that are not already in use are valid.
 *
 * The user is allowed to use any string as a refnum, we dont really care.
 * Automatically assigned refnums (when the user doesnt specify one) will
 * always be one more than the highest pending refnum.
 *
 * "refnum_gets" must be REFNUM_MAX + 1 bytes by definition of API.
 */
static	int	create_timer_ref (const char *refnum_wanted, char *refnum_gets)
{
	Timer	*tmp;
	int 	refnum = 0;
	char	*refnum_want;

	/* Max of 10 characters. */
	refnum_want = LOCAL_COPY(refnum_wanted);
	if (strlen(refnum_want) > REFNUM_MAX)
		refnum_want[REFNUM_MAX] = 0;

	/* If the user doesnt care */
	if (*refnum_want == 0)
	{
		/* Find the lowest refnum available */
		for (tmp = PendingTimers; tmp; tmp = tmp->next)
		{
			if (refnum < my_atol(tmp->ref))
				refnum = my_atol(tmp->ref);
		}
		strlcpy(refnum_gets, ltoa(refnum+1), REFNUM_MAX + 1);
	}
	else
	{
		/* See if the refnum is available */
		if (get_timer(refnum_want))
			return -1;		/* Already in use */

		strlcpy(refnum_gets, refnum_want, REFNUM_MAX + 1);
	}

	return 0;
}

static int
me_gcap(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p,
		int parc, const char *parv[])
{
	char *t = LOCAL_COPY(parv[1]);
	char *s;
	char *p;

	if(!IsServer(source_p))
		return 0;

	/* already had GCAPAB?! */
	if(!EmptyString(source_p->serv->fullcaps))
	{
		source_p->serv->caps = 0;
		rb_free(source_p->serv->fullcaps);
	}

	source_p->serv->fullcaps = rb_strdup(parv[1]);

	for (s = rb_strtok_r(t, " ", &p); s; s = rb_strtok_r(NULL, " ", &p))
		source_p->serv->caps |= capability_get(serv_capindex, s);

	return 0;
}

/*
 * do_notify: This simply goes through the notify list, sending out a WHOIS
 * for each person on it.  This uses the fancy whois stuff in whois.c to
 * figure things out.
 */
void do_notify(void)
{
	int	old_from_server = from_server;
	int	servnum;
	static	time_t		last_notify = 0;
	int		interval = get_int_var(NOTIFY_INTERVAL_VAR);
	time_t current_time = time(NULL);

	if (current_time < last_notify)
		last_notify = current_time;
	else if (!interval || interval > (current_time - last_notify))
		return;		/* Not yet */

	last_notify = current_time;

	if (!server_list_size() || !get_int_var(NOTIFY_VAR))
		return;
	for (servnum = 0; servnum < server_list_size(); servnum++)
	{
		if (is_server_connected(servnum) && !get_server_watch(servnum))
		{
			from_server = servnum;
			if (NOTIFY_LIST(servnum)->ison && *NOTIFY_LIST(servnum)->ison)
			{
				char *lame = LOCAL_COPY(NOTIFY_LIST(servnum)->ison);
				isonbase(lame, ison_notify);
			}
		}
	}
	from_server = old_from_server;
	return;
}

/*
 * create_timer_ref:  returns the lowest unused reference number for a timer
 * All refnums that are not already in use are valid.
 *
 * The user is allowed to use any string as a refnum, we dont really care.
 * Automatically assigned refnums (when the user doesnt specify one) will
 * always be one more than the highest pending refnum.
 *
 * "refnum_gets" must be REFNUM_MAX + 1 bytes by definition of API.
 */
static	int	create_timer_ref (const char *refnum_wanted, char **refnum_gets)
{
	Timer	*tmp;
	int 	refnum = 0;
	char	*refnum_want;

	refnum_want = LOCAL_COPY(refnum_wanted);

	/* If the user doesnt care */
	if (*refnum_want == 0)
	{
		/* Find the lowest refnum available */
		for (tmp = PendingTimers; tmp; tmp = tmp->next)
		{
			if (refnum < my_atol(tmp->ref))
				refnum = my_atol(tmp->ref);
		}
		malloc_sprintf(refnum_gets, "%d", refnum + 1);
	}
	else
	{
		/* See if the refnum is available */
		if (get_timer(refnum_want))
			return -1;		/* Already in use */

		malloc_strcpy(refnum_gets, refnum_want);
	}

	return 0;
}

/*
** m_part
**      parv[0] = sender prefix
**      parv[1] = channel
**      parv[2] = reason
*/
static int
m_part(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
	char *p, *name;
	char reason[REASONLEN + 1];
	char *s = LOCAL_COPY(parv[1]);

	reason[0] = '\0';

	if(parc > 2)
		strlcpy(reason, parv[2], sizeof(reason));

	name = strtoken(&p, s, ",");

	/* Finish the flood grace period... */
	if(MyClient(source_p) && !IsFloodDone(source_p))
		flood_endgrace(source_p);

	while (name)
	{
		part_one_client(client_p, source_p, name, reason);
		name = strtoken(&p, NULL, ",");
	}
	return 0;
}

void SchmidtUGenInternal::processBlock(bool& shouldDelete, const unsigned int blockID, const int channel) throw()
{
	int numSamplesToProcess = uGenOutput.getBlockSize();
	float* outputSamples = uGenOutput.getSampleData();
	float* inputSamples = inputs[Input].processBlock(shouldDelete, blockID, channel);
	float* loSamples = inputs[Lo].processBlock(shouldDelete, blockID, channel);
	float* hiSamples = inputs[Hi].processBlock(shouldDelete, blockID, channel);
	
	LOCAL_DECLARE(float, state);
	
	while(numSamplesToProcess--)
	{
		float input = *inputSamples++;
		float lo = *loSamples++;
		float hi = *hiSamples++;
		
		if(state > 0.f)
		{
			if(input < lo) state = 0.f;
		}
		else
		{
			if(input > hi) state = 1.f;
		}
		
		*outputSamples++ = state;
	}
	
	LOCAL_COPY(state);
}

/*
** m_quit
**      parv[1] = comment
*/
static int
m_quit(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
    char *comment = LOCAL_COPY((parc > 1 && parv[1]) ? parv[1] : client_p->name);
    char reason[REASONLEN + 1];

    source_p->flags |= FLAGS_NORMALEX;

    if(strlen(comment) > (size_t) REASONLEN)
        comment[REASONLEN] = '\0';

    strip_colour(comment);

    if(ConfigFileEntry.client_exit && comment[0]) {
        rb_snprintf(reason, sizeof(reason), "Quit: %s", comment);
        comment = reason;
    }

    if(!IsOper(source_p) && !EmptyString(ConfigFileEntry.static_quit)) {
        exit_client(client_p, source_p, source_p, ConfigFileEntry.static_quit);
        return 0;
    }

    if(!IsOper(source_p) &&
       (source_p->localClient->firsttime + ConfigFileEntry.anti_spam_exit_message_time) >
       rb_current_time()) {
        exit_client(client_p, source_p, source_p, "Client Quit");
        return 0;
    }

    exit_client(client_p, source_p, source_p, comment);

    return 0;
}

/*
 * mr_capab - CAPAB message handler
 *      parv[1] = space-separated list of capabilities
 *
 */
static int
mr_capab(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
	int i;
	char *p;
	char *s;

	/* ummm, this shouldn't happen. Could argue this should be logged etc. */
	if(client_p->localClient == NULL)
		return 0;

	if(client_p->user)
		return 0;

	/* CAP_TS6 is set in PASS, so is valid.. */
	if((client_p->localClient->caps & ~CAP_TS6) != 0)
	{
		exit_client(client_p, client_p, client_p, "CAPAB received twice");
		return 0;
	}
	else
		client_p->localClient->caps |= CAP_CAP;

	rb_free(client_p->localClient->fullcaps);
	client_p->localClient->fullcaps = rb_strdup(parv[1]);

	for (i = 1; i < parc; i++)
	{
		char *t = LOCAL_COPY(parv[i]);
		for (s = rb_strtok_r(t, " ", &p); s; s = rb_strtok_r(NULL, " ", &p))
			client_p->localClient->caps |= capability_get(serv_capindex, s);
	}

	return 0;
}

char	*make_string_var(const char *var_name)
{
	int	cnt,
		msv_index;
	char	*ret = NULL;
	char	*copy;
	
	copy = LOCAL_COPY(var_name);
	upper(copy);

	if ((find_fixed_array_item (irc_variable, sizeof(IrcVariable), NUMBER_OF_VARIABLES, copy, &cnt, &msv_index) == NULL))
		return NULL;
	if (cnt >= 0)
		return NULL;
	switch (irc_variable[msv_index].type)
	{
		case STR_TYPE_VAR:
			ret = m_strdup(irc_variable[msv_index].string);
			break;
		case INT_TYPE_VAR:
			ret = m_strdup(ltoa(irc_variable[msv_index].integer));
			break;
		case BOOL_TYPE_VAR:
			ret = m_strdup(var_settings[irc_variable[msv_index].integer]);
			break;
		case CHAR_TYPE_VAR:
			ret = m_dupchar(irc_variable[msv_index].integer);
			break;
	}
	return ret;
}

char *get_help_topic(char *args, int helpfunc)
{
char *new_comm = NULL;
int found = 0, i;
char *others = NULL;

	new_comm = LOCAL_COPY(args);

	for (i = 0; helpfunc ? script_help[i] : help_index[i]; i++)
	{
		if (!my_strnicmp(helpfunc?script_help[i]->title:help_index[i]->title, new_comm, strlen(new_comm)))
		{
			int j;
			char *text = NULL;
			if (found++)
			{
				m_s3cat(&others, " , ", helpfunc?script_help[i]->title:help_index[i]->title);
				continue;
			}
			if (args && *args && do_hook(HELPTOPIC_LIST, "%s", args))
				put_it("%s",convert_output_format("$G \002$0\002: Help on Topic: \002$1\002", version, args));
			for (j = 0; ; j++)
			{
				if (helpfunc && (script_help[i] && script_help[i]->contents[j]))
					text = script_help[i]->contents[j];
				else if (!helpfunc && (help_index[i] && help_index[i]->contents[j]))
					text = help_index[i]->contents[j];
				else 
					break;

				if (text && do_hook(HELPSUBJECT_LIST, "%s %s", new_comm, text))
				{
					in_chelp++;
					put_it("%s", convert_output_format(text, NULL));
					in_chelp--;
				}
			}		
			text = helpfunc ?script_help[i]->relates:help_index[i]->relates;
			if (text && do_hook(HELPTOPIC_LIST, "%s", text))
				put_it("%s", convert_output_format(text, NULL));
		}
		else if (found)
			break;
	}
	if (!found)
	{
		if (do_hook(HELPTOPIC_LIST, "%s", args))
			bitchsay("No help on %s", args);
	}

	if (others && found)
	{
		if (do_hook(HELPTOPIC_LIST, "%d %s", found, others))
			put_it("Other %d subjects: %s", found - 1, others);
	}
	new_free(&others);
	if (helpfunc)
		return m_strdup(empty_string);
	return NULL;
}

static int
m_ison(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
	struct Client *target_p;
	char *nick;
	char *p;
	char buf[IRCD_BUFSIZE];
	int i;

	memset(buf, 0, sizeof(buf));

	for(i = 1; i < parc; i++)
	{
		char *cs = LOCAL_COPY(parv[i]);
		for(nick = rb_strtok_r(cs, " ", &p); nick; nick = rb_strtok_r(NULL, " ", &p))
		{
			target_p = find_named_client(nick);

			if(target_p != NULL)
			{
				rb_strlcat(buf, target_p->name, sizeof(buf));
				rb_strlcat(buf, " ", sizeof(buf));
			}
		}
	}
	sendto_one_numeric(source_p, s_RPL(RPL_ISON), buf);
	return 0;

}

/*
 * m_ison added by Darren Reed 13/8/91 to act as an efficent user indicator
 * with respect to cpu/bandwidth used. Implemented for NOTIFY feature in
 * clients. Designed to reduce number of whois requests. Can process
 * nicknames in batches as long as the maximum buffer length.
 *
 * format:
 * ISON :nicklist
 */
static int
m_ison(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
	struct Client *target_p;
	char *nick;
	char *p;
	char *current_insert_point, *current_insert_point2;
	int len;
	int i;
	int done = 0;

	current_insert_point2 = buf2;
	*buf2 = '\0';

	rb_sprintf(buf, form_str(RPL_ISON), me.name, source_p->name);
	len = strlen(buf);
	current_insert_point = buf + len;

	/* rfc1489 is ambigious about how to handle ISON
	 * this should handle both interpretations.
	 */
	for(i = 1; i < parc; i++)
	{
		char *cs = LOCAL_COPY(parv[i]);
		for(nick = rb_strtok_r(cs, " ", &p); nick; nick = rb_strtok_r(NULL, " ", &p))
		{
			target_p = find_named_client(nick);

			if(target_p != NULL)
			{
				len = strlen(target_p->name);
				if((current_insert_point + (len + 5)) < (buf + sizeof(buf)))
				{
					memcpy(current_insert_point, target_p->name, len);
					current_insert_point += len;
					*current_insert_point++ = ' ';
				}
				else
				{
					done = 1;
					break;
				}
			}
		}
		if(done)
			break;
	}

	/*  current_insert_point--;
	 *  Do NOT take out the trailing space, it breaks ircII
	 *  --Rodder */

	*current_insert_point = '\0';
	*current_insert_point2 = '\0';

	sendto_one_buffer(source_p, buf);

	return 0;
}