Convert lookup_blob to struct object_id

Convert lookup_blob to take a pointer to struct object_id.

The commit was created with manual changes to blob.c and blob.h, plus
the following semantic patch:

@@
expression E1;
@@
- lookup_blob(E1.hash)
+ lookup_blob(&E1)

@@
expression E1;
@@
- lookup_blob(E1->hash)
+ lookup_blob(E1)

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

blob.c

@@ -3,11 +3,11 @@
 
 const char *blob_type = "blob";
 
-struct blob *lookup_blob(const unsigned char *sha1)
+struct blob *lookup_blob(const struct object_id *oid)
 {
-	struct object *obj = lookup_object(sha1);
+	struct object *obj = lookup_object(oid->hash);
 	if (!obj)
-		return create_object(sha1, alloc_blob_node());
+		return create_object(oid->hash, alloc_blob_node());
 	return object_as_type(obj, OBJ_BLOB, 0);
 }
 

blob.h

@@ -9,7 +9,7 @@ struct blob {
 	struct object object;
 };
 
-struct blob *lookup_blob(const unsigned char *sha1);
+struct blob *lookup_blob(const struct object_id *oid);
 
 int parse_blob_buffer(struct blob *item, void *buffer, unsigned long size);
 

builtin/fast-export.c

@@ -232,7 +232,7 @@ static void export_blob(const struct object_id *oid)
 
 	if (anonymize) {
 		buf = anonymize_blob(&size);
-		object = (struct object *)lookup_blob(oid->hash);
+		object = (struct object *)lookup_blob(oid);
 		eaten = 0;
 	} else {
 		buf = read_sha1_file(oid->hash, &type, &size);

builtin/fsck.c

@@ -781,7 +781,7 @@ int cmd_fsck(int argc, const char **argv, const char *prefix)
 			mode = active_cache[i]->ce_mode;
 			if (S_ISGITLINK(mode))
 				continue;
-			blob = lookup_blob(active_cache[i]->oid.hash);
+			blob = lookup_blob(&active_cache[i]->oid);
 			if (!blob)
 				continue;
 			obj = &blob->object;

builtin/index-pack.c

@@ -829,7 +829,7 @@ static void sha1_object(const void *data, struct object_entry *obj_entry,
 	if (strict) {
 		read_lock();
 		if (type == OBJ_BLOB) {
-			struct blob *blob = lookup_blob(oid->hash);
+			struct blob *blob = lookup_blob(oid);
 			if (blob)
 				blob->object.flags |= FLAG_CHECKED;
 			else

builtin/merge-tree.c

@@ -168,7 +168,7 @@ static struct merge_list *create_entry(unsigned stage, unsigned mode, const stru
 	res->stage = stage;
 	res->path = path;
 	res->mode = mode;
-	res->blob = lookup_blob(oid->hash);
+	res->blob = lookup_blob(oid);
 	return res;
 }
 

builtin/unpack-objects.c

@@ -249,7 +249,7 @@ static void write_object(unsigned nr, enum object_type type,
 		added_object(nr, type, buf, size);
 		free(buf);
 
-		blob = lookup_blob(obj_list[nr].oid.hash);
+		blob = lookup_blob(&obj_list[nr].oid);
 		if (blob)
 			blob->object.flags |= FLAG_WRITTEN;
 		else

fsck.c

@@ -365,7 +365,7 @@ static int fsck_walk_tree(struct tree *tree, void *data, struct fsck_options *op
 			result = options->walk(obj, OBJ_TREE, data, options);
 		}
 		else if (S_ISREG(entry.mode) || S_ISLNK(entry.mode)) {
-			obj = &lookup_blob(entry.oid->hash)->object;
+			obj = &lookup_blob(entry.oid)->object;
 			if (name)
 				put_object_name(options, obj, "%s%s", name,
 					entry.path);

http-push.c

@@ -1315,7 +1315,7 @@ static struct object_list **process_tree(struct tree *tree,
 			p = process_tree(lookup_tree(entry.oid->hash), p);
 			break;
 		case OBJ_BLOB:
-			p = process_blob(lookup_blob(entry.oid->hash), p);
+			p = process_blob(lookup_blob(entry.oid), p);
 			break;
 		default:
 			/* Subproject commit - not in this repository */

list-objects.c

@@ -119,7 +119,7 @@ static void process_tree(struct rev_info *revs,
 					cb_data);
 		else
 			process_blob(revs,
-				     lookup_blob(entry.oid->hash),
+				     lookup_blob(entry.oid),
 				     show, base, entry.path,
 				     cb_data);
 	}

object.c

@@ -190,7 +190,7 @@ struct object *parse_object_buffer(const unsigned char *sha1, enum object_type t
 
 	obj = NULL;
 	if (type == OBJ_BLOB) {
-		struct blob *blob = lookup_blob(oid.hash);
+		struct blob *blob = lookup_blob(&oid);
 		if (blob) {
 			if (parse_blob_buffer(blob, buffer, size))
 				return NULL;
@@ -266,7 +266,7 @@ struct object *parse_object(const unsigned char *sha1)
 			error("sha1 mismatch %s", sha1_to_hex(repl));
 			return NULL;
 		}
-		parse_blob_buffer(lookup_blob(oid.hash), NULL, 0);
+		parse_blob_buffer(lookup_blob(&oid), NULL, 0);
 		return lookup_object(sha1);
 	}
 

reachable.c

@@ -88,7 +88,7 @@ static void add_recent_object(const struct object_id *oid,
 		obj = (struct object *)lookup_tree(oid->hash);
 		break;
 	case OBJ_BLOB:
-		obj = (struct object *)lookup_blob(oid->hash);
+		obj = (struct object *)lookup_blob(oid);
 		break;
 	default:
 		die("unknown object type for %s: %s",

revision.c

@@ -62,7 +62,7 @@ static void mark_tree_contents_uninteresting(struct tree *tree)
 			mark_tree_uninteresting(lookup_tree(entry.oid->hash));
 			break;
 		case OBJ_BLOB:
-			mark_blob_uninteresting(lookup_blob(entry.oid->hash));
+			mark_blob_uninteresting(lookup_blob(entry.oid));
 			break;
 		default:
 			/* Subproject commit - not in this repository */
@@ -1275,7 +1275,7 @@ void add_index_objects_to_pending(struct rev_info *revs, unsigned flags)
 		if (S_ISGITLINK(ce->ce_mode))
 			continue;
 
-		blob = lookup_blob(ce->oid.hash);
+		blob = lookup_blob(&ce->oid);
 		if (!blob)
 			die("unable to add index blob to traversal");
 		add_pending_object_with_path(revs, &blob->object, "",

tag.c

@@ -142,7 +142,7 @@ int parse_tag_buffer(struct tag *item, const void *data, unsigned long size)
 	bufptr = nl + 1;
 
 	if (!strcmp(type, blob_type)) {
-		item->tagged = &lookup_blob(oid.hash)->object;
+		item->tagged = &lookup_blob(&oid)->object;
 	} else if (!strcmp(type, tree_type)) {
 		item->tagged = &lookup_tree(oid.hash)->object;
 	} else if (!strcmp(type, commit_type)) {

walker.c

@@ -52,7 +52,7 @@ static int process_tree(struct walker *walker, struct tree *tree)
 				obj = &tree->object;
 		}
 		else {
-			struct blob *blob = lookup_blob(entry.oid->hash);
+			struct blob *blob = lookup_blob(entry.oid);
 			if (blob)
 				obj = &blob->object;
 		}