libpurple/protocols/zephyr/ZGetSubs.c

/* This file is part of the Project Athena Zephyr Notification System.
 * It contains source for the ZGetSubscriptions function.
 *
 *	Created by:	Robert French
 *
 *	Copyright (c) 1987 by the Massachusetts Institute of Technology.
 *	For copying and distribution information, see the file
 *	"mit-copyright.h".
 */

#include "internal.h"

/* Prototype for -Wmissing-prototypes */
Code_t ZGetSubscriptions(ZSubscription_t *subscription, int *numsubs);

Code_t ZGetSubscriptions(ZSubscription_t *subscription, int *numsubs)
{
	int i;

	if (!__subscriptions_list) {
		return (ZERR_NOSUBSCRIPTIONS);
	}

	if (__subscriptions_next == __subscriptions_num) {
		return (ZERR_NOMORESUBSCRIPTIONS);
	}

	for (i = 0; i < MIN(*numsubs, __subscriptions_num - __subscriptions_next);
	     i++) {
		subscription[i] = __subscriptions_list[i + __subscriptions_next];
	}

	if (__subscriptions_num - __subscriptions_next < *numsubs) {
		*numsubs = __subscriptions_num - __subscriptions_next;
	}

	__subscriptions_next += *numsubs;

	return ZERR_NONE;
}