From aed3b0f26563f655af5e3d1bd25879a94fcb05ea Mon Sep 17 00:00:00 2001
From: Jonathan Dieter <jdieter@gmail.com>
Date: Sun, 8 Jul 2018 20:54:27 +0100
Subject: [PATCH] Initial work to move buzhash into libzck

Signed-off-by: Jonathan Dieter <jdieter@gmail.com>
---
 src/lib/zck.c         | 4 +++-
 src/lib/zck_private.h | 6 ++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/lib/zck.c b/src/lib/zck.c
index a0c3578..e45c029 100644
--- a/src/lib/zck.c
+++ b/src/lib/zck.c
@@ -68,7 +68,6 @@ static void zck_clear(zckCtx *zck) {
     index_free(zck);
     if(zck->header)
         free(zck->header);
-    zck->fd = -1;
     zck->header = NULL;
     zck->header_size = 0;
     if(!comp_close(zck))
@@ -89,6 +88,7 @@ static void zck_clear(zckCtx *zck) {
         close(zck->temp_fd);
         zck->temp_fd = 0;
     }
+    zck->fd = -1;
 }
 
 static int hex_to_int (char c) {
@@ -337,6 +337,8 @@ zckCtx PUBLIC *zck_create() {
     }
     zck->prep_hash_type = -1;
     zck->prep_hdr_size = -1;
+    zck->buzhash_width = DEFAULT_BUZHASH_WIDTH;
+    zck->buzhash_match_bits = (2^DEFAULT_BUZHASH_BITS) - 1;
     return zck;
 }
 
diff --git a/src/lib/zck_private.h b/src/lib/zck_private.h
index 84948b2..61b6a6c 100644
--- a/src/lib/zck_private.h
+++ b/src/lib/zck_private.h
@@ -12,6 +12,9 @@
 #define ZCK_MODE_READ 0
 #define ZCK_MODE_WRITE 1
 
+#define DEFAULT_BUZHASH_WIDTH 48
+#define DEFAULT_BUZHASH_BITS 15
+
 #define zmalloc(x) calloc(1, x)
 
 #define PUBLIC __attribute__((visibility("default")))
@@ -204,6 +207,9 @@ typedef struct zckCtx {
 
     char *data;
     size_t data_size;
+
+    int buzhash_width;
+    int buzhash_match_bits;
 } zckCtx;
 
 int get_tmp_fd()
-- 
2.30.2