New support function: change_local_filter_dir().

exclude.c

@@ -493,6 +493,30 @@ void pop_local_filters(void *mem)
 	free(pop);
 }
 
+void change_local_filter_dir(const char *dname, int dlen, int dir_depth)
+{
+	static int min_depth = MAXPATHLEN, cur_depth = -1;
+	static void *filt_array[MAXPATHLEN/2+1];
+
+	if (!dname) {
+		while (cur_depth >= min_depth)
+			pop_local_filters(filt_array[cur_depth--]);
+		min_depth = MAXPATHLEN;
+		cur_depth = -1;
+		return;
+	}
+
+	assert(dir_depth < MAXPATHLEN/2+1);
+
+	while (cur_depth >= dir_depth && cur_depth >= min_depth)
+		pop_local_filters(filt_array[cur_depth--]);
+	cur_depth = dir_depth;
+	if (cur_depth < min_depth)
+		min_depth = cur_depth;
+
+	filt_array[cur_depth] = push_local_filters(dname, dlen);
+}
+
 static int rule_matches(char *name, struct filter_struct *ex, int name_is_dir)
 {
 	int slash_handling, str_cnt = 0, anchored_match = 0;