X-Git-Url: https://git.sommitrealweird.co.uk/onak.git/blobdiff_plain/4b8483ae278577a3adc8d84da81d77019704466f..33cfd5887ea8d05241b5b4749abbf7fdfadb51fe:/ll.c?ds=inline

diff --git a/ll.c b/ll.c
index acad0bc..ed6315a 100644
--- a/ll.c
+++ b/ll.c
@@ -1,16 +1,27 @@
 /*
  * ll.c - various things of used for dealing with linked lists.
  *
- * Jonathan McDowell <noodles@earth.li>
+ * Copyright 2000-2004 Jonathan McDowell <noodles@earth.li>
  *
- * Copyright 2000-2002 Project Purple
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * 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 Street, Fifth Floor, Boston, MA 02110-1301, USA.
  */
 
-#include <assert.h>
 #include <stdio.h>
 #include <stdlib.h>
 
 #include "ll.h"
+#include "log.h"
 
 struct ll *lladd(struct ll *curll, void *object)
 {
@@ -28,22 +39,55 @@ struct ll *lladd(struct ll *curll, void *object)
 	return new;
 }
 
+struct ll *lladdend(struct ll *curll, void *object)
+{
+	struct ll *new;
+	struct ll *cur;
+
+	if ((new = malloc(sizeof(struct ll))) == NULL) {
+		logthing(LOGTHING_ERROR,
+				"Couldn't allocate memory in lladdend()");
+		return NULL;
+	}
+
+	new->next = NULL;
+	new->object = object;
+
+	if (curll != NULL) {
+		cur = curll;
+		while (cur->next != NULL) {
+			cur = cur->next;
+		}
+		cur->next = new;
+	} else {
+		curll = new;
+	}
+	
+	return curll;
+}
+
 struct ll *lldel(struct ll *curll, void *object,
 	int (*objectcmp) (const void *object1, const void *object2))
 {
-	struct ll *cur;
+	struct ll *cur = NULL;
+	struct ll *old = NULL;
 
-	assert(objectcmp != NULL);
+	log_assert(objectcmp != NULL);
 
 	cur = curll;
 	if (cur == NULL) {
 		return NULL;
 	} else if (!(*objectcmp)(cur->object, object)) {
-		return cur->next;
+		old = cur;
+		cur = cur->next;
+		free(old);
+		return cur;
 	} 
 	while (cur->next != NULL) {
 		if (!(*objectcmp)(cur->next->object, object)) {
+			old = cur->next;
 			cur->next = cur->next->next;
+			free(old);
 			break;
 		}
 	}
@@ -55,6 +99,8 @@ struct ll *llfind(struct ll *curll, void *object,
 {
 	struct ll *cur;
 
+	log_assert(objectcmp != NULL);
+
 	cur = curll;
 	while (cur != NULL && (*objectcmp)(cur->object, object)) {
 		cur = cur->next;
@@ -73,3 +119,28 @@ unsigned long llsize(struct ll *curll)
 
 	return count;
 }
+
+/**
+ *	llfree - Frees a linked list.
+ *	@curll: The list to free.
+ *	@objectfree: A pointer to a free function for the object.
+ *
+ * 	Walks through a list and free it. If a function is provided for
+ * 	objectfree then it's called for each element to free them, if it's NULL
+ * 	just the list is freed.
+ */
+void llfree(struct ll *curll, void (*objectfree) (void *object))
+{
+	struct ll *nextll;
+
+	while (curll != NULL) {
+		nextll = curll->next;
+		if (curll->object != NULL && objectfree != NULL) {
+			objectfree(curll->object);
+			curll->object = NULL;
+		}
+		free(curll);
+		curll = nextll;
+	}
+	return;
+}