/**
* collectd - src/utils_llist.c
- * Copyright (C) 2006 Florian Forster <octo at verplant.org>
+ * Copyright (C) 2006 Florian Forster <octo at collectd.org>
*
- * This program is free software; you can redistribute it and/
- * or modify it under the terms of the GNU General Public Li-
- * cence as published by the Free Software Foundation; only
- * version 2 of the Licence is applicable.
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
*
- * This program is distributed in the hope that it will be use-
- * ful, but WITHOUT ANY WARRANTY; without even the implied war-
- * ranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- * See the GNU General Public Licence for more details.
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
*
- * You should have received a copy of the GNU General Public
- * Licence along with this program; if not, write to the Free
- * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
- * USA.
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
*
* Authors:
- * Florian Forster <octo at verplant.org>
+ * Florian Forster <octo at collectd.org>
*/
#include "config.h"
llentry_t *e_this;
llentry_t *e_next;
+ if (l == NULL)
+ return;
+
for (e_this = l->head; e_this != NULL; e_this = e_next)
{
e_next = e_this->next;
return (l ? l->size : 0);
}
+static int llist_strcmp (llentry_t *e, void *ud)
+{
+ if ((e == NULL) || (ud == NULL))
+ return (-1);
+ return (strcmp (e->key, (const char *)ud));
+}
+
llentry_t *llist_search (llist_t *l, const char *key)
{
+ return (llist_search_custom (l, llist_strcmp, (void *)key));
+}
+
+llentry_t *llist_search_custom (llist_t *l,
+ int (*compare) (llentry_t *, void *), void *user_data)
+{
llentry_t *e;
- for (e = l->head; e != NULL; e = e->next)
- if (strcmp (key, e->key) == 0)
+ if (l == NULL)
+ return (NULL);
+
+ e = l->head;
+ while (e != NULL) {
+ llentry_t *next = e->next;
+
+ if (compare (e, user_data) == 0)
break;
+ e = next;
+ }
+
return (e);
}
llentry_t *llist_head (llist_t *l)
{
+ if (l == NULL)
+ return (NULL);
return (l->head);
}
llentry_t *llist_tail (llist_t *l)
{
+ if (l == NULL)
+ return (NULL);
return (l->tail);
}