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slist.c, slist.h, cookie.c: new internal procedure Curl_slist_append_nodup()

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This commit is contained in:
Patrick Monnerat
2013-07-15 16:53:43 +02:00
parent 9c15325d34
commit 964a7600b9
3 changed files with 51 additions and 26 deletions
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63
lib/slist.c
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@@ -5,7 +5,7 @@
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
* Copyright (C) 1998 - 2013, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
@@ -45,6 +45,39 @@ static struct curl_slist *slist_get_last(struct curl_slist *list)
return 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;
if(!data)
return NULL;
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;
}
/*
* 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
@@ -55,32 +88,16 @@ static struct curl_slist *slist_get_last(struct curl_slist *list)
struct curl_slist *curl_slist_append(struct curl_slist *list,
const char *data)
{
struct curl_slist *last;
struct curl_slist *new_item;
char *dupdata = strdup(data);
new_item = malloc(sizeof(struct curl_slist));
if(new_item) {
char *dupdata = strdup(data);
if(dupdata) {
new_item->next = NULL;
new_item->data = dupdata;
}
else {
free(new_item);
return NULL;
}
}
else
if(!data)
return NULL;
if(list) {
last = slist_get_last(list);
last->next = new_item;
return list;
}
list = Curl_slist_append_nodup(list, dupdata);
if(!list)
free(dupdata);
/* if this is the first item, then new_item *is* the list */
return new_item;
return list;
}
/*