sha1_file: convert read_object_with_reference to object_id

Convert read_object_with_reference to take pointers to struct object_id.
Update the internals of the function accordingly.

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

1 files changed, 10 insertions, 10 deletions

diff --git a/sha1_file.c b/sha1_file.c
index e1292c11fd..e2b8e7694e 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -1399,29 +1399,29 @@ void *read_sha1_file_extended(const unsigned char *sha1,
 	return NULL;
 }
 
-void *read_object_with_reference(const unsigned char *sha1,
+void *read_object_with_reference(const struct object_id *oid,
 				 const char *required_type_name,
 				 unsigned long *size,
-				 unsigned char *actual_sha1_return)
+				 struct object_id *actual_oid_return)
 {
 	enum object_type type, required_type;
 	void *buffer;
 	unsigned long isize;
-	unsigned char actual_sha1[20];
+	struct object_id actual_oid;
 
 	required_type = type_from_string(required_type_name);
-	hashcpy(actual_sha1, sha1);
+	oidcpy(&actual_oid, oid);
 	while (1) {
 		int ref_length = -1;
 		const char *ref_type = NULL;
 
-		buffer = read_sha1_file(actual_sha1, &type, &isize);
+		buffer = read_sha1_file(actual_oid.hash, &type, &isize);
 		if (!buffer)
 			return NULL;
 		if (type == required_type) {
 			*size = isize;
-			if (actual_sha1_return)
-				hashcpy(actual_sha1_return, actual_sha1);
+			if (actual_oid_return)
+				oidcpy(actual_oid_return, &actual_oid);
 			return buffer;
 		}
 		/* Handle references */
@@ -1435,15 +1435,15 @@ void *read_object_with_reference(const unsigned char *sha1,
 		}
 		ref_length = strlen(ref_type);
 
-		if (ref_length + 40 > isize ||
+		if (ref_length + GIT_SHA1_HEXSZ > isize ||
 		    memcmp(buffer, ref_type, ref_length) ||
-		    get_sha1_hex((char *) buffer + ref_length, actual_sha1)) {
+		    get_oid_hex((char *) buffer + ref_length, &actual_oid)) {
 			free(buffer);
 			return NULL;
 		}
 		free(buffer);
 		/* Now we have the ID of the referred-to object in
-		 * actual_sha1.  Check again. */
+		 * actual_oid.  Check again. */
 	}
 }