hash: allow caching of hash value

1 files changed, 7 insertions, 2 deletions

diff --git a/src/blob.c b/src/blob.c
index 43c94ea..9f253cb 100644
--- a/src/blob.c
+++ b/src/blob.c
@@ -98,9 +98,9 @@ int apk_blob_split(apk_blob_t blob, apk_blob_t split, apk_blob_t *l, apk_blob_t
 	}
 }
 
-unsigned long apk_blob_hash(apk_blob_t blob)
+unsigned long apk_blob_hash_seed(apk_blob_t blob, unsigned long seed)
 {
-	unsigned long hash = 5381;
+	unsigned long hash = seed;
 	int i;
 
         for (i = 0; i < blob.len; i++)
@@ -109,6 +109,11 @@ unsigned long apk_blob_hash(apk_blob_t blob)
 	return hash;
 }
 
+unsigned long apk_blob_hash(apk_blob_t blob)
+{
+	return apk_blob_hash_seed(blob, 5381);
+}
+
 int apk_blob_compare(apk_blob_t a, apk_blob_t b)
 {
 	if (a.len == b.len)