libpurple/protocols/zephyr/ZGetSubs.c

   1 /* This file is part of the Project Athena Zephyr Notification System.
   2  * It contains source for the ZGetSubscriptions function.
   3  *
   4  *      Created by:     Robert French
   5  *
   6  *      Copyright (c) 1987 by the Massachusetts Institute of Technology.
   7  *      For copying and distribution information, see the file
   8  *      "mit-copyright.h".
   9  */
  10
  11 #include "internal.h"
  12
  13 /* Prototype for -Wmissing-prototypes */
  14 Code_t ZGetSubscriptions(ZSubscription_t *subscription, int *numsubs);
  15
  16 Code_t ZGetSubscriptions(ZSubscription_t *subscription, int *numsubs)
  17 {
  18         int i;
  19
  20         if (!__subscriptions_list) {
  21                 return (ZERR_NOSUBSCRIPTIONS);
  22         }
  23
  24         if (__subscriptions_next == __subscriptions_num) {
  25                 return (ZERR_NOMORESUBSCRIPTIONS);
  26         }
  27
  28         for (i = 0; i < MIN(*numsubs, __subscriptions_num - __subscriptions_next);
  29              i++) {
  30                 subscription[i] = __subscriptions_list[i + __subscriptions_next];
  31         }
  32
  33         if (__subscriptions_num - __subscriptions_next < *numsubs) {
  34                 *numsubs = __subscriptions_num - __subscriptions_next;
  35         }
  36
  37         __subscriptions_next += *numsubs;
  38
  39         return ZERR_NONE;
  40 }