asn1c_defs/all-defs/asn_SET_OF.c

   1 /*-\r
   2  * Copyright (c) 2003, 2004 Lev Walkin <vlm@lionet.info>. All rights reserved.\r
   3  * Redistribution and modifications are permitted subject to BSD license.\r
   4  */\r
   5 #include <asn_internal.h>\r
   6 #include <asn_SET_OF.h>\r
   7 #include <errno.h>\r
   8 \r
   9 /*\r
  10  * Add another element into the set.\r
  11  */\r
  12 int\r
  13 asn_set_add(void *asn_set_of_x, void *ptr) {\r
  14         asn_anonymous_set_ *as = _A_SET_FROM_VOID(asn_set_of_x);\r
  15 \r
  16         if(as == 0 || ptr == 0) {\r
  17                 errno = EINVAL;         /* Invalid arguments */\r
  18                 return -1;\r
  19         }\r
  20 \r
  21         /*\r
  22          * Make sure there's enough space to insert an element.\r
  23          */\r
  24         if(as->count == as->size) {\r
  25                 int _newsize = as->size ? (as->size << 1) : 4;\r
  26                 void *_new_arr;\r
  27                 _new_arr = REALLOC(as->array, _newsize * sizeof(as->array[0]));\r
  28                 if(_new_arr) {\r
  29                         as->array = (void **)_new_arr;\r
  30                         as->size = _newsize;\r
  31                 } else {\r
  32                         /* ENOMEM */\r
  33                         return -1;\r
  34                 }\r
  35         }\r
  36 \r
  37         as->array[as->count++] = ptr;\r
  38 \r
  39         return 0;\r
  40 }\r
  41 \r
  42 void\r
  43 asn_set_del(void *asn_set_of_x, int number, int _do_free) {\r
  44         asn_anonymous_set_ *as = _A_SET_FROM_VOID(asn_set_of_x);\r
  45 \r
  46         if(as) {\r
  47                 void *ptr;\r
  48                 if(number < 0 || number >= as->count)\r
  49                         return;\r
  50 \r
  51                 if(_do_free && as->free) {\r
  52                         ptr = as->array[number];\r
  53                 } else {\r
  54                         ptr = 0;\r
  55                 }\r
  56 \r
  57                 as->array[number] = as->array[--as->count];\r
  58 \r
  59                 /*\r
  60                  * Invoke the third-party function only when the state\r
  61                  * of the parent structure is consistent.\r
  62                  */\r
  63                 if(ptr) as->free(ptr);\r
  64         }\r
  65 }\r
  66 \r
  67 /*\r
  68  * Free the contents of the set, do not free the set itself.\r
  69  */\r
  70 void\r
  71 asn_set_empty(void *asn_set_of_x) {\r
  72         asn_anonymous_set_ *as = _A_SET_FROM_VOID(asn_set_of_x);\r
  73 \r
  74         if(as) {\r
  75                 if(as->array) {\r
  76                         if(as->free) {\r
  77                                 while(as->count--)\r
  78                                         as->free(as->array[as->count]);\r
  79                         }\r
  80                         FREEMEM(as->array);\r
  81                         as->array = 0;\r
  82                 }\r
  83                 as->count = 0;\r
  84                 as->size = 0;\r
  85         }\r
  86 \r
  87 }\r
  88 \r