5a053ffe80
This commit renames lib/setup.h to lib/curl_setup.h and
renames lib/setup_once.h to lib/curl_setup_once.h.
Removes the need and usage of a header inclusion guard foreign
to libcurl. [1]
Removes the need and presence of an alarming notice we carried
in old setup_once.h [2]
----------------------------------------
1 - lib/setup_once.h used __SETUP_ONCE_H macro as header inclusion guard
up to commit ec691ca3 which changed this to HEADER_CURL_SETUP_ONCE_H,
this single inclusion guard is enough to ensure that inclusion of
lib/setup_once.h done from lib/setup.h is only done once.
Additionally lib/setup.h has always used __SETUP_ONCE_H macro to
protect inclusion of setup_once.h even after commit ec691ca3, this
was to avoid a circular header inclusion triggered when building a
c-ares enabled version with c-ares sources available which also has
a setup_once.h header. Commit ec691ca3 exposes the real nature of
__SETUP_ONCE_H usage in lib/setup.h, it is a header inclusion guard
foreign to libcurl belonging to c-ares's setup_once.h
The renaming this commit does, fixes the circular header inclusion,
and as such removes the need and usage of a header inclusion guard
foreign to libcurl. Macro __SETUP_ONCE_H no longer used in libcurl.
2 - Due to the circular interdependency of old lib/setup_once.h and the
c-ares setup_once.h header, old file lib/setup_once.h has carried
back from 2006 up to now days an alarming and prominent notice about
the need of keeping libcurl's and c-ares's setup_once.h in sync.
Given that this commit fixes the circular interdependency, the need
and presence of mentioned notice is removed.
All mentioned interdependencies come back from now old days when
the c-ares project lived inside a curl subdirectory. This commit
removes last traces of such fact.
128 lines
3.3 KiB
C
128 lines
3.3 KiB
C
/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at http://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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***************************************************************************/
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#include "curl_setup.h"
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#include "curl_memory.h"
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#include "slist.h"
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/* The last #include file should be: */
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#include "memdebug.h"
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/* returns last node in linked list */
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static struct curl_slist *slist_get_last(struct curl_slist *list)
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{
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struct curl_slist *item;
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/* if caller passed us a NULL, return now */
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if(!list)
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return NULL;
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/* loop through to find the last item */
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item = list;
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while(item->next) {
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item = item->next;
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}
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return item;
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}
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/*
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* curl_slist_append() appends a string to the linked list. It always returns
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* the address of the first record, so that you can use this function as an
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* initialization function as well as an append function. If you find this
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* bothersome, then simply create a separate _init function and call it
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* appropriately from within the program.
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*/
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struct curl_slist *curl_slist_append(struct curl_slist *list,
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const char *data)
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{
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struct curl_slist *last;
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struct curl_slist *new_item;
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new_item = malloc(sizeof(struct curl_slist));
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if(new_item) {
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char *dupdata = strdup(data);
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if(dupdata) {
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new_item->next = NULL;
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new_item->data = dupdata;
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}
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else {
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free(new_item);
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return NULL;
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}
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}
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else
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return NULL;
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if(list) {
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last = slist_get_last(list);
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last->next = new_item;
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return list;
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}
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/* if this is the first item, then new_item *is* the list */
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return new_item;
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}
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/*
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* Curl_slist_duplicate() duplicates a linked list. It always returns the
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* address of the first record of the cloned list or NULL in case of an
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* error (or if the input list was NULL).
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*/
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struct curl_slist *Curl_slist_duplicate(struct curl_slist *inlist)
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{
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struct curl_slist *outlist = NULL;
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struct curl_slist *tmp;
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while(inlist) {
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tmp = curl_slist_append(outlist, inlist->data);
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if(!tmp) {
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curl_slist_free_all(outlist);
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return NULL;
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}
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outlist = tmp;
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inlist = inlist->next;
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}
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return outlist;
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}
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/* be nice and clean up resources */
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void curl_slist_free_all(struct curl_slist *list)
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{
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struct curl_slist *next;
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struct curl_slist *item;
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if(!list)
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return;
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item = list;
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do {
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next = item->next;
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Curl_safefree(item->data);
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free(item);
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item = next;
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} while(next);
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}
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