pack-bitmap: replace sha1_to_hex

Replace the uses of sha1_to_hex in the pack bitmap code with hash_to_hex
to allow the use of SHA-256 as well.  Rename a few variables since they
are no longer limited to SHA-1.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

pack-bitmap-write.c

@@ -142,13 +142,13 @@ static inline void reset_all_seen(void)
 	seen_objects_nr = 0;
 }
 
-static uint32_t find_object_pos(const unsigned char *sha1)
+static uint32_t find_object_pos(const unsigned char *hash)
 {
-	struct object_entry *entry = packlist_find(writer.to_pack, sha1, NULL);
+	struct object_entry *entry = packlist_find(writer.to_pack, hash, NULL);
 
 	if (!entry) {
 		die("Failed to write bitmap index. Packfile doesn't have full closure "
-			"(object %s is missing)", sha1_to_hex(sha1));
+			"(object %s is missing)", hash_to_hex(hash));
 	}
 
 	return oe_in_pack_pos(writer.to_pack, entry);

pack-bitmap.c

@@ -169,7 +169,7 @@ static int load_bitmap_header(struct bitmap_index *index)
 
 static struct stored_bitmap *store_bitmap(struct bitmap_index *index,
 					  struct ewah_bitmap *root,
-					  const unsigned char *sha1,
+					  const unsigned char *hash,
 					  struct stored_bitmap *xor_with,
 					  int flags)
 {
@@ -181,7 +181,7 @@ static struct stored_bitmap *store_bitmap(struct bitmap_index *index,
 	stored->root = root;
 	stored->xor = xor_with;
 	stored->flags = flags;
-	oidread(&stored->oid, sha1);
+	oidread(&stored->oid, hash);
 
 	hash_pos = kh_put_sha1(index->bitmaps, stored->oid.hash, &ret);
 
@@ -189,7 +189,7 @@ static struct stored_bitmap *store_bitmap(struct bitmap_index *index,
 	 * because the SHA1 already existed on the map. this is bad, there
 	 * shouldn't be duplicated commits in the index */
 	if (ret == 0) {
-		error("Duplicate entry in bitmap index: %s", sha1_to_hex(sha1));
+		error("Duplicate entry in bitmap index: %s", hash_to_hex(hash));
 		return NULL;
 	}
 
@@ -805,7 +805,7 @@ int reuse_partial_packfile_from_bitmap(struct bitmap_index *bitmap_git,
 
 		fprintf(stderr, "Failed to reuse at %d (%016llx)\n",
 			reuse_objects, result->words[i]);
-		fprintf(stderr, " %s\n", sha1_to_hex(sha1));
+		fprintf(stderr, " %s\n", hash_to_hex(sha1));
 	}
 #endif