libs/smux/asn_SEQUENCE_OF.c

   1 /*-
   2  * Copyright (c) 2003, 2004 Lev Walkin <vlm@lionet.info>. All rights reserved.
   3  * Redistribution and modifications are permitted subject to BSD license.
   4  */
   5 #include <asn_internal.h>
   6 #include <asn_SEQUENCE_OF.h>
   7
   8 typedef A_SEQUENCE_OF(void) asn_sequence;
   9
  10 void
  11 asn_sequence_del(void *asn_sequence_of_x, int number, int _do_free) {
  12         asn_sequence *as = (asn_sequence *)asn_sequence_of_x;
  13
  14         if(as) {
  15                 void *ptr;
  16                 int n;
  17
  18                 if(number < 0 || number >= as->count)
  19                         return; /* Nothing to delete */
  20
  21                 if(_do_free && as->free) {
  22                         ptr = as->array[number];
  23                 } else {
  24                         ptr = 0;
  25                 }
  26
  27                 /*
  28                  * Shift all elements to the left to hide the gap.
  29                  */
  30                 --as->count;
  31                 for(n = number; n < as->count; n++)
  32                         as->array[n] = as->array[n+1];
  33
  34                 /*
  35                  * Invoke the third-party function only when the state
  36                  * of the parent structure is consistent.
  37                  */
  38                 if(ptr) as->free(ptr);
  39         }
  40 }
  41