From 415959387e0642842be7aad05fa5d95ea4ed350f Mon Sep 17 00:00:00 2001
From: Jeff King <peff@peff.net>
Date: Thu, 11 Feb 2016 17:23:48 -0500
Subject: [PATCH] http-push: stop using name_path

The graph traversal code here passes along a name_path to
build up the pathname at which we find each blob. But we
never actually do anything with the resulting names, making
it a waste of code and memory.

This usage came in aa1dbc9 (Update http-push functionality,
2006-03-07), and originally the result was passed to
"add_object" (which stored it, but didn't really use it,
either). But we stopped using that function in 1f1e895 (Add
"named object array" concept, 2006-06-19) in favor of
storing just the objects themselves.

Moreover, the generation of the name in process_tree() is
buggy. It sticks "name" onto the end of the name_path linked
list, and then passes it down again as it recurses (instead
of "entry.path"). So it's a good thing this was unused, as
the resulting path for "a/b/c/d" would end up as "a/a/a/a".

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 http-push.c | 23 +++++++----------------
 1 file changed, 7 insertions(+), 16 deletions(-)

diff --git a/http-push.c b/http-push.c
index d857b131a..bd6066870 100644
--- a/http-push.c
+++ b/http-push.c
@@ -1277,9 +1277,7 @@ static struct object_list **add_one_object(struct object *obj, struct object_lis
 }
 
 static struct object_list **process_blob(struct blob *blob,
-					 struct object_list **p,
-					 struct name_path *path,
-					 const char *name)
+					 struct object_list **p)
 {
 	struct object *obj = &blob->object;
 
@@ -1293,14 +1291,11 @@ static struct object_list **process_blob(struct blob *blob,
 }
 
 static struct object_list **process_tree(struct tree *tree,
-					 struct object_list **p,
-					 struct name_path *path,
-					 const char *name)
+					 struct object_list **p)
 {
 	struct object *obj = &tree->object;
 	struct tree_desc desc;
 	struct name_entry entry;
-	struct name_path me;
 
 	obj->flags |= LOCAL;
 
@@ -1310,21 +1305,17 @@ static struct object_list **process_tree(struct tree *tree,
 		die("bad tree object %s", oid_to_hex(&obj->oid));
 
 	obj->flags |= SEEN;
-	name = xstrdup(name);
 	p = add_one_object(obj, p);
-	me.up = path;
-	me.elem = name;
-	me.elem_len = strlen(name);
 
 	init_tree_desc(&desc, tree->buffer, tree->size);
 
 	while (tree_entry(&desc, &entry))
 		switch (object_type(entry.mode)) {
 		case OBJ_TREE:
-			p = process_tree(lookup_tree(entry.sha1), p, &me, name);
+			p = process_tree(lookup_tree(entry.sha1), p);
 			break;
 		case OBJ_BLOB:
-			p = process_blob(lookup_blob(entry.sha1), p, &me, name);
+			p = process_blob(lookup_blob(entry.sha1), p);
 			break;
 		default:
 			/* Subproject commit - not in this repository */
@@ -1343,7 +1334,7 @@ static int get_delta(struct rev_info *revs, struct remote_lock *lock)
 	int count = 0;
 
 	while ((commit = get_revision(revs)) != NULL) {
-		p = process_tree(commit->tree, p, NULL, "");
+		p = process_tree(commit->tree, p);
 		commit->object.flags |= LOCAL;
 		if (!(commit->object.flags & UNINTERESTING))
 			count += add_send_request(&commit->object, lock);
@@ -1362,11 +1353,11 @@ static int get_delta(struct rev_info *revs, struct remote_lock *lock)
 			continue;
 		}
 		if (obj->type == OBJ_TREE) {
-			p = process_tree((struct tree *)obj, p, NULL, name);
+			p = process_tree((struct tree *)obj, p);
 			continue;
 		}
 		if (obj->type == OBJ_BLOB) {
-			p = process_blob((struct blob *)obj, p, NULL, name);
+			p = process_blob((struct blob *)obj, p);
 			continue;
 		}
 		die("unknown pending object %s (%s)", oid_to_hex(&obj->oid), name);