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[PATCH v2 03/24] refs: convert delete_ref and refs_delete_ref to struct object_id




Convert delete_ref and refs_delete_ref to take a pointer to struct
object_id.  Update the documentation accordingly, including referring to
null_oid in lowercase, as it is not a #define constant.

Signed-off-by: brian m. carlson <sandals@xxxxxxxxxxxxxxxxxxxx>
---
 builtin/branch.c          |  2 +-
 builtin/replace.c         |  2 +-
 builtin/reset.c           |  2 +-
 builtin/tag.c             |  2 +-
 builtin/update-ref.c      |  2 +-
 refs.c                    | 21 +++++++++++----------
 refs.h                    | 12 ++++++------
 refs/files-backend.c      |  2 +-
 t/helper/test-ref-store.c |  6 +++---
 9 files changed, 26 insertions(+), 25 deletions(-)

diff --git a/builtin/branch.c b/builtin/branch.c
index 355f9ef5da..6031b74d68 100644
--- a/builtin/branch.c
+++ b/builtin/branch.c
@@ -256,7 +256,7 @@ static int delete_branches(int argc, const char **argv, int force, int kinds,
 			goto next;
 		}
 
-		if (delete_ref(NULL, name, is_null_oid(&oid) ? NULL : oid.hash,
+		if (delete_ref(NULL, name, is_null_oid(&oid) ? NULL : &oid,
 			       REF_NODEREF)) {
 			error(remote_branch
 			      ? _("Error deleting remote-tracking branch '%s'")
diff --git a/builtin/replace.c b/builtin/replace.c
index 3e71a77152..2854eaa0f3 100644
--- a/builtin/replace.c
+++ b/builtin/replace.c
@@ -128,7 +128,7 @@ static int for_each_replace_name(const char **argv, each_replace_name_fn fn)
 static int delete_replace_ref(const char *name, const char *ref,
 			      const struct object_id *oid)
 {
-	if (delete_ref(NULL, ref, oid->hash, 0))
+	if (delete_ref(NULL, ref, oid, 0))
 		return 1;
 	printf("Deleted replace ref '%s'\n", name);
 	return 0;
diff --git a/builtin/reset.c b/builtin/reset.c
index 9cd89b2305..5f3632e05b 100644
--- a/builtin/reset.c
+++ b/builtin/reset.c
@@ -269,7 +269,7 @@ static int reset_refs(const char *rev, const struct object_id *oid)
 		update_ref_oid(msg.buf, "ORIG_HEAD", orig, old_orig, 0,
 			   UPDATE_REFS_MSG_ON_ERR);
 	} else if (old_orig)
-		delete_ref(NULL, "ORIG_HEAD", old_orig->hash, 0);
+		delete_ref(NULL, "ORIG_HEAD", old_orig, 0);
 	set_reflog_message(&msg, "updating HEAD", rev);
 	update_ref_status = update_ref_oid(msg.buf, "HEAD", oid, orig, 0,
 				       UPDATE_REFS_MSG_ON_ERR);
diff --git a/builtin/tag.c b/builtin/tag.c
index c627794181..46ff4ca736 100644
--- a/builtin/tag.c
+++ b/builtin/tag.c
@@ -97,7 +97,7 @@ static int for_each_tag_name(const char **argv, each_tag_name_fn fn,
 static int delete_tag(const char *name, const char *ref,
 		      const struct object_id *oid, const void *cb_data)
 {
-	if (delete_ref(NULL, ref, oid->hash, 0))
+	if (delete_ref(NULL, ref, oid, 0))
 		return 1;
 	printf(_("Deleted tag '%s' (was %s)\n"), name, find_unique_abbrev(oid->hash, DEFAULT_ABBREV));
 	return 0;
diff --git a/builtin/update-ref.c b/builtin/update-ref.c
index 6b90c5dead..bf0f80ebae 100644
--- a/builtin/update-ref.c
+++ b/builtin/update-ref.c
@@ -434,7 +434,7 @@ int cmd_update_ref(int argc, const char **argv, const char *prefix)
 		 * NULL_SHA1 as "don't care" here:
 		 */
 		return delete_ref(msg, refname,
-				  (oldval && !is_null_oid(&oldoid)) ? oldoid.hash : NULL,
+				  (oldval && !is_null_oid(&oldoid)) ? &oldoid : NULL,
 				  flags);
 	else
 		return update_ref(msg, refname, oid.hash, oldval ? oldoid.hash : NULL,
diff --git a/refs.c b/refs.c
index 6042645c40..0a5b68d6fb 100644
--- a/refs.c
+++ b/refs.c
@@ -620,25 +620,25 @@ static int write_pseudoref(const char *pseudoref, const unsigned char *sha1,
 	return ret;
 }
 
-static int delete_pseudoref(const char *pseudoref, const unsigned char *old_sha1)
+static int delete_pseudoref(const char *pseudoref, const struct object_id *old_oid)
 {
 	static struct lock_file lock;
 	const char *filename;
 
 	filename = git_path("%s", pseudoref);
 
-	if (old_sha1 && !is_null_sha1(old_sha1)) {
+	if (old_oid && !is_null_oid(old_oid)) {
 		int fd;
-		unsigned char actual_old_sha1[20];
+		struct object_id actual_old_oid;
 
 		fd = hold_lock_file_for_update_timeout(
 				&lock, filename, LOCK_DIE_ON_ERROR,
 				get_files_ref_lock_timeout_ms());
 		if (fd < 0)
 			die_errno(_("Could not open '%s' for writing"), filename);
-		if (read_ref(pseudoref, actual_old_sha1))
+		if (read_ref(pseudoref, actual_old_oid.hash))
 			die("could not read ref '%s'", pseudoref);
-		if (hashcmp(actual_old_sha1, old_sha1)) {
+		if (oidcmp(&actual_old_oid, old_oid)) {
 			warning("Unexpected sha1 when deleting %s", pseudoref);
 			rollback_lock_file(&lock);
 			return -1;
@@ -655,7 +655,7 @@ static int delete_pseudoref(const char *pseudoref, const unsigned char *old_sha1
 
 int refs_delete_ref(struct ref_store *refs, const char *msg,
 		    const char *refname,
-		    const unsigned char *old_sha1,
+		    const struct object_id *old_oid,
 		    unsigned int flags)
 {
 	struct ref_transaction *transaction;
@@ -663,12 +663,13 @@ int refs_delete_ref(struct ref_store *refs, const char *msg,
 
 	if (ref_type(refname) == REF_TYPE_PSEUDOREF) {
 		assert(refs == get_main_ref_store());
-		return delete_pseudoref(refname, old_sha1);
+		return delete_pseudoref(refname, old_oid);
 	}
 
 	transaction = ref_store_transaction_begin(refs, &err);
 	if (!transaction ||
-	    ref_transaction_delete(transaction, refname, old_sha1,
+	    ref_transaction_delete(transaction, refname,
+				   old_oid ? old_oid->hash : NULL,
 				   flags, msg, &err) ||
 	    ref_transaction_commit(transaction, &err)) {
 		error("%s", err.buf);
@@ -682,10 +683,10 @@ int refs_delete_ref(struct ref_store *refs, const char *msg,
 }
 
 int delete_ref(const char *msg, const char *refname,
-	       const unsigned char *old_sha1, unsigned int flags)
+	       const struct object_id *old_oid, unsigned int flags)
 {
 	return refs_delete_ref(get_main_ref_store(), msg, refname,
-			       old_sha1, flags);
+			       old_oid, flags);
 }
 
 int copy_reflog_msg(char *buf, const char *msg)
diff --git a/refs.h b/refs.h
index e1c5803f9a..07e9907b31 100644
--- a/refs.h
+++ b/refs.h
@@ -371,19 +371,19 @@ int refs_reflog_exists(struct ref_store *refs, const char *refname);
 int reflog_exists(const char *refname);
 
 /*
- * Delete the specified reference. If old_sha1 is non-NULL, then
+ * Delete the specified reference. If old_oid is non-NULL, then
  * verify that the current value of the reference is old_sha1 before
- * deleting it. If old_sha1 is NULL, delete the reference if it
- * exists, regardless of its old value. It is an error for old_sha1 to
- * be NULL_SHA1. msg and flags are passed through to
+ * deleting it. If old_oid is NULL, delete the reference if it
+ * exists, regardless of its old value. It is an error for old_oid to
+ * be null_oid. msg and flags are passed through to
  * ref_transaction_delete().
  */
 int refs_delete_ref(struct ref_store *refs, const char *msg,
 		    const char *refname,
-		    const unsigned char *old_sha1,
+		    const struct object_id *old_oid,
 		    unsigned int flags);
 int delete_ref(const char *msg, const char *refname,
-	       const unsigned char *old_sha1, unsigned int flags);
+	       const struct object_id *old_oid, unsigned int flags);
 
 /*
  * Delete the specified references. If there are any problems, emit
diff --git a/refs/files-backend.c b/refs/files-backend.c
index e3968d4f7c..0c641f0ad0 100644
--- a/refs/files-backend.c
+++ b/refs/files-backend.c
@@ -1308,7 +1308,7 @@ static int files_rename_ref(struct ref_store *ref_store,
 	}
 
 	if (refs_delete_ref(&refs->base, logmsg, oldrefname,
-			    orig_oid.hash, REF_NODEREF)) {
+			    &orig_oid, REF_NODEREF)) {
 		error("unable to delete old %s", oldrefname);
 		goto rollback;
 	}
diff --git a/t/helper/test-ref-store.c b/t/helper/test-ref-store.c
index 05d8c4d8af..4624238641 100644
--- a/t/helper/test-ref-store.c
+++ b/t/helper/test-ref-store.c
@@ -218,12 +218,12 @@ static int cmd_delete_ref(struct ref_store *refs, const char **argv)
 	const char *refname = notnull(*argv++, "refname");
 	const char *sha1_buf = notnull(*argv++, "old-sha1");
 	unsigned int flags = arg_flags(*argv++, "flags");
-	unsigned char old_sha1[20];
+	struct object_id old_oid;
 
-	if (get_sha1_hex(sha1_buf, old_sha1))
+	if (get_oid_hex(sha1_buf, &old_oid))
 		die("not sha-1");
 
-	return refs_delete_ref(refs, msg, refname, old_sha1, flags);
+	return refs_delete_ref(refs, msg, refname, &old_oid, flags);
 }
 
 static int cmd_update_ref(struct ref_store *refs, const char **argv)
-- 
2.14.2.920.gcf0c67979c