fetch-object: unify fetch_object[s] functions

There are fetch_object() and fetch_objects() helpers in
fetch-object.h; as the latter takes "struct oid_array",
the former cannot be made into a thin wrapper around the
latter without an extra allocation and set-up cost.

Update fetch_objects() to take an array of "struct object_id"
and number of elements in it as separate parameters, remove
fetch_object(), and adjust all existing callers of these
functions to use the new fetch_objects().

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

fetch-object.c

@@ -23,21 +23,15 @@ static void fetch_refs(const char *remote_name, struct ref *ref)
 	fetch_if_missing = original_fetch_if_missing;
 }
 
-void fetch_object(const char *remote_name, const unsigned char *sha1)
-{
-	struct ref *ref = alloc_ref(sha1_to_hex(sha1));
-	hashcpy(ref->old_oid.hash, sha1);
-	fetch_refs(remote_name, ref);
-}
-
-void fetch_objects(const char *remote_name, const struct oid_array *to_fetch)
+void fetch_objects(const char *remote_name, const struct object_id *oids,
+		   int oid_nr)
 {
 	struct ref *ref = NULL;
 	int i;
 
-	for (i = 0; i < to_fetch->nr; i++) {
-		struct ref *new_ref = alloc_ref(oid_to_hex(&to_fetch->oid[i]));
-		oidcpy(&new_ref->old_oid, &to_fetch->oid[i]);
+	for (i = 0; i < oid_nr; i++) {
+		struct ref *new_ref = alloc_ref(oid_to_hex(&oids[i]));
+		oidcpy(&new_ref->old_oid, &oids[i]);
 		new_ref->next = ref;
 		ref = new_ref;
 	}

fetch-object.h

@@ -1,11 +1,7 @@
 #ifndef FETCH_OBJECT_H
 #define FETCH_OBJECT_H
 
-#include "sha1-array.h"
-
-extern void fetch_object(const char *remote_name, const unsigned char *sha1);
-
-extern void fetch_objects(const char *remote_name,
-			  const struct oid_array *to_fetch);
+void fetch_objects(const char *remote_name, const struct object_id *oids,
+		   int oid_nr);
 
 #endif

sha1-file.c

@@ -1317,7 +1317,7 @@ int oid_object_info_extended(struct repository *r, const struct object_id *oid,
 			 * TODO Pass a repository struct through fetch_object,
 			 * such that arbitrary repositories work.
 			 */
-			fetch_object(repository_format_partial_clone, real->hash);
+			fetch_objects(repository_format_partial_clone, real, 1);
 			already_retried = 1;
 			continue;
 		}

unpack-trees.c

@@ -392,7 +392,7 @@ static int check_updates(struct unpack_trees_options *o)
 		}
 		if (to_fetch.nr)
 			fetch_objects(repository_format_partial_clone,
-				      &to_fetch);
+				      to_fetch.oid, to_fetch.nr);
 		fetch_if_missing = fetch_if_missing_store;
 		oid_array_clear(&to_fetch);
 	}