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 #define min(a,b) ((a)<(b)?(a):(b))
  14
  15 /* Prototype for -Wmissing-prototypes */
  16 Code_t ZGetSubscriptions(ZSubscription_t *subscription, int *numsubs);
  17
  18 Code_t ZGetSubscriptions(ZSubscription_t *subscription, int *numsubs)
  19 {
  20     int i;
  21
  22     if (!__subscriptions_list)
  23         return (ZERR_NOSUBSCRIPTIONS);
  24
  25     if (__subscriptions_next == __subscriptions_num)
  26         return (ZERR_NOMORESUBSCRIPTIONS);
  27
  28     for (i=0;i<min(*numsubs, __subscriptions_num-__subscriptions_next);i++)
  29         subscription[i] = __subscriptions_list[i+__subscriptions_next];
  30
  31     if (__subscriptions_num-__subscriptions_next < *numsubs)
  32         *numsubs = __subscriptions_num-__subscriptions_next;
  33
  34     __subscriptions_next += *numsubs;
  35
  36     return (ZERR_NONE);
  37 }