* ranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public Licence for more details.
*
- * 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.
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* Authors:
* Florian Forster <octo at verplant.org>
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;
{
e->next = l->head;
l->head = e;
+
+ if (l->tail == NULL)
+ l->tail = e;
+
++(l->size);
}
{
llentry_t *prev;
+ if ((l == NULL) || (e == NULL))
+ return;
+
prev = l->head;
while ((prev != NULL) && (prev->next != e))
prev = prev->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);
}