89 lines
1.7 KiB
C
89 lines
1.7 KiB
C
|
/*-
|
||
|
|
* Copyright (c) 2003, 2004 Lev Walkin <vlm@lionet.info>. All rights reserved.
|
||
|
|
* Redistribution and modifications are permitted subject to BSD license.
|
||
|
|
*/
|
||
|
|
#include "asn_internal.h"
|
||
|
|
#include "asn_SET_OF.h"
|
||
|
|
#include <errno.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Add another element into the set.
|
||
|
|
*/
|
||
|
|
int
|
||
|
|
asn_set_add(void *asn_set_of_x, void *ptr) {
|
||
|
|
asn_anonymous_set_ *as = _A_SET_FROM_VOID(asn_set_of_x);
|
||
|
|
|
||
|
|
if(as == 0 || ptr == 0) {
|
||
|
|
errno = EINVAL; /* Invalid arguments */
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Make sure there's enough space to insert an element.
|
||
|
|
*/
|
||
|
|
if(as->count == as->size) {
|
||
|
|
int _newsize = as->size ? (as->size << 1) : 4;
|
||
|
|
void *_new_arr;
|
||
|
|
_new_arr = REALLOC(as->array, _newsize * sizeof(as->array[0]));
|
||
|
|
if(_new_arr) {
|
||
|
|
as->array = (void **)_new_arr;
|
||
|
|
as->size = _newsize;
|
||
|
|
} else {
|
||
|
|
/* ENOMEM */
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
as->array[as->count++] = ptr;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
asn_set_del(void *asn_set_of_x, int number, int _do_free) {
|
||
|
|
asn_anonymous_set_ *as = _A_SET_FROM_VOID(asn_set_of_x);
|
||
|
|
|
||
|
|
if(as) {
|
||
|
|
void *ptr;
|
||
|
|
if(number < 0 || number >= as->count)
|
||
|
|
return;
|
||
|
|
|
||
|
|
if(_do_free && as->free) {
|
||
|
|
ptr = as->array[number];
|
||
|
|
} else {
|
||
|
|
ptr = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
as->array[number] = as->array[--as->count];
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Invoke the third-party function only when the state
|
||
|
|
* of the parent structure is consistent.
|
||
|
|
*/
|
||
|
|
if(ptr) as->free(ptr);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Free the contents of the set, do not free the set itself.
|
||
|
|
*/
|
||
|
|
void
|
||
|
|
asn_set_empty(void *asn_set_of_x) {
|
||
|
|
asn_anonymous_set_ *as = _A_SET_FROM_VOID(asn_set_of_x);
|
||
|
|
|
||
|
|
if(as) {
|
||
|
|
if(as->array) {
|
||
|
|
if(as->free) {
|
||
|
|
while(as->count--)
|
||
|
|
as->free(as->array[as->count]);
|
||
|
|
}
|
||
|
|
FREEMEM(as->array);
|
||
|
|
as->array = 0;
|
||
|
|
}
|
||
|
|
as->count = 0;
|
||
|
|
as->size = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|