Function walk_objects_by_path

path-walk.c:697–845

* Given the configuration of 'info', walk the commits based on 'info->revs' and * call 'info->path_fn' on each discovered path. * * Returns nonzero on an error. */

 * Returns nonzero on an error.
 */
int walk_objects_by_path(struct path_walk_info *info)
{
	int ret;
	size_t commits_nr = 0, paths_nr = 0;
	struct commit *c;
	struct type_and_oid_list *root_tree_list;
	struct type_and_oid_list *commit_list;
	struct path_walk_context ctx = {
		.repo = info->revs->repo,
		.revs = info->revs,
		.info = info,
		.path_stack = {
			.compare = compare_by_type,
			.cb_data = &ctx
		},
		.path_stack_pushed = STRSET_INIT,
		.paths_to_lists = STRMAP_INIT
	};

	trace2_region_enter("path-walk", "commit-walk", info->revs->repo);

	if (!prepare_filters(info, &info->revs->filter))
		return -1;

	CALLOC_ARRAY(commit_list, 1);
	commit_list->type = OBJ_COMMIT;

	if (info->tags)
		info->revs->tag_objects = 1;

	if (ctx.revs->prune_data.nr) {
		if (!ctx.revs->prune_data.has_wildcard &&
		    !ctx.revs->prune_data.magic)
			ctx.exact_pathspecs = 1;
	}

	/* Insert a single list for the root tree into the paths. */
	CALLOC_ARRAY(root_tree_list, 1);
	root_tree_list->type = OBJ_TREE;
	root_tree_list->maybe_interesting = 1;
	strmap_put(&ctx.paths_to_lists, root_path, root_tree_list);
	push_to_stack(&ctx, root_path);

	/*
	 * Ensure that prepare_revision_walk() keeps all pending objects
	 * even through an object type filter.
	 */
	info->revs->blob_objects = info->revs->tree_objects = 1;

	if (prepare_revision_walk(info->revs))
		die(_("failed to setup revision walk"));

	info->revs->blob_objects = info->blobs;
	info->revs->tree_objects = info->trees;

	/*
	 * Walk trees to mark them as UNINTERESTING.
	 * This is particularly important when 'edge_aggressive' is set.