/*
* curl_slist_append() appends a string to the linked list. It always returns
* the address of the first record, so that you can use this function as an
* initialization function as well as an append function. If you find this
* bothersome, then simply create a separate _init function and call it
* appropriately from within the program.
*/
struct curl_slist *curl_slist_append(struct curl_slist *list,
const char *data)
{
struct curl_slist *last;
struct curl_slist *new_item;
new_item = (struct curl_slist *) malloc(sizeof(struct curl_slist));
if (new_item) {
char *dup = strdup(data);
if(dup) {
new_item->next = NULL;
new_item->data = dup;
}
else {
free(new_item);
return NULL;
}
}
else
return NULL;
if (list) {
last = slist_get_last(list);
last->next = new_item;
return list;
}
/* if this is the first item, then new_item *is* the list */
return new_item;
}
/*
* Curl_slist_append_nodup() appends a string to the linked list. Rather than
* copying the string in dynamic storage, it takes its ownership. The string
* should have been malloc()ated. Curl_slist_append_nodup always returns
* the address of the first record, so that you can use this function as an
* initialization function as well as an append function.
* If an error occurs, NULL is returned and the string argument is NOT
* released.
*/
struct curl_slist *Curl_slist_append_nodup(struct curl_slist *list, char *data)
{
struct curl_slist *last;
struct curl_slist *new_item;
DEBUGASSERT(data);
new_item = malloc(sizeof(struct curl_slist));
if(!new_item)
return NULL;
new_item->next = NULL;
new_item->data = data;
/* if this is the first item, then new_item *is* the list */
if(!list)
return new_item;
last = slist_get_last(list);
last->next = new_item;
return list;
}