db, hash: fix package purging/upgrading to update filedb properly

1 files changed, 28 insertions, 0 deletions

diff --git a/src/hash.c b/src/hash.c
index a81bb76..ee24a29 100644
--- a/src/hash.c
+++ b/src/hash.c
@@ -87,5 +87,33 @@ void apk_hash_insert(struct apk_hash *h, apk_hash_item item)
 
 void apk_hash_delete(struct apk_hash *h, apk_blob_t key)
 {
+	ptrdiff_t offset = h->ops->node_offset;
+	unsigned long hash;
+	apk_hash_node *pos;
+	apk_hash_item item;
+	apk_blob_t itemkey;
+
+	hash = h->ops->hash_key(key) % h->buckets->num;
+	if (h->ops->compare_item != NULL) {
+		hlist_for_each(pos, &h->buckets->item[hash]) {
+			item = ((void *) pos) - offset;
+			if (h->ops->compare_item(item, key) == 0) {
+				hlist_del(pos, &h->buckets->item[hash]);
+				h->ops->delete_item(item);
+				return;
+			}
+
+		}
+	} else {
+		hlist_for_each(pos, &h->buckets->item[hash]) {
+			item = ((void *) pos) - offset;
+			itemkey = h->ops->get_key(item);
+			if (h->ops->compare(key, itemkey) == 0) {
+				hlist_del(pos, &h->buckets->item[hash]);
+				h->ops->delete_item(item);
+				return;
+			}
+		}
+	}
 }