Function walk_path

path-walk.c:301–412

* For each path in paths_to_explore, walk the trees another level * and add any found blobs to the batch (but only if they exist and * haven't been added yet). */

 * haven't been added yet).
 */
static int walk_path(struct path_walk_context *ctx,
		     const char *path)
{
	struct type_and_oid_list *list;
	int ret = 0;

	list = strmap_get(&ctx->paths_to_lists, path);

	if (!list)
		BUG("provided path '%s' that had no associated list", path);

	if (!list->oids.nr)
		return 0;

	if (ctx->info->prune_all_uninteresting) {
		/*
		 * This is true if all objects were UNINTERESTING
		 * when added to the list.
		 */
		if (!list->maybe_interesting)
			return 0;

		/*
		 * But it's still possible that the objects were set
		 * as UNINTERESTING after being added. Do a quick check.
		 */
		list->maybe_interesting = 0;
		for (size_t i = 0;
		     !list->maybe_interesting && i < list->oids.nr;
		     i++) {
			if (list->type == OBJ_TREE) {
				struct tree *t = lookup_tree(ctx->repo,
							     &list->oids.oid[i]);
				if (t && !(t->object.flags & UNINTERESTING))
					list->maybe_interesting = 1;
			} else if (list->type == OBJ_BLOB) {
				struct blob *b = lookup_blob(ctx->repo,
							     &list->oids.oid[i]);
				if (b && !(b->object.flags & UNINTERESTING))
					list->maybe_interesting = 1;
			} else {
				/* Tags are always interesting if visited. */
				list->maybe_interesting = 1;
			}
		}

		/* We have confirmed that all objects are UNINTERESTING. */
		if (!list->maybe_interesting)
			return 0;
	}

	if (list->type == OBJ_BLOB &&
	    ctx->revs->prune_data.nr &&
	    !path_is_for_direct_objects(path) &&
	    !match_pathspec(ctx->repo->index, &ctx->revs->prune_data,
			   path, strlen(path), 0,
			   NULL, 0))
		return 0;