dir: convert is_excluded_from_list to take an index

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

dir.c

@@ -1010,10 +1010,11 @@ static struct exclude *last_exclude_matching_from_list(const char *pathname,
  */
 int is_excluded_from_list(const char *pathname,
 			  int pathlen, const char *basename, int *dtype,
-			  struct exclude_list *el)
+			  struct exclude_list *el, struct index_state *istate)
 {
 	struct exclude *exclude;
-	exclude = last_exclude_matching_from_list(pathname, pathlen, basename, dtype, el, &the_index);
+	exclude = last_exclude_matching_from_list(pathname, pathlen, basename,
+						  dtype, el, istate);
 	if (exclude)
 		return exclude->flags & EXC_FLAG_NEGATIVE ? 0 : 1;
 	return -1; /* undecided */

dir.h

@@ -217,8 +217,10 @@ extern int within_depth(const char *name, int namelen, int depth, int max_depth)
 extern int fill_directory(struct dir_struct *dir, const struct pathspec *pathspec);
 extern int read_directory(struct dir_struct *, const char *path, int len, const struct pathspec *pathspec);
 
-extern int is_excluded_from_list(const char *pathname, int pathlen, const char *basename,
-				 int *dtype, struct exclude_list *el);
+extern int is_excluded_from_list(const char *pathname, int pathlen,
+				 const char *basename, int *dtype,
+				 struct exclude_list *el,
+				 struct index_state *istate);
 struct dir_entry *dir_add_ignored(struct dir_struct *dir,
 				  struct index_state *istate,
 				  const char *pathname, int len);

unpack-trees.c

@@ -1068,7 +1068,7 @@ static int clear_ce_flags_dir(struct cache_entry **cache, int nr,
 	struct cache_entry **cache_end;
 	int dtype = DT_DIR;
 	int ret = is_excluded_from_list(prefix->buf, prefix->len,
-					basename, &dtype, el);
+					basename, &dtype, el, &the_index);
 	int rc;
 
 	strbuf_addch(prefix, '/');
@@ -1171,7 +1171,7 @@ static int clear_ce_flags_1(struct cache_entry **cache, int nr,
 		/* Non-directory */
 		dtype = ce_to_dtype(ce);
 		ret = is_excluded_from_list(ce->name, ce_namelen(ce),
-					    name, &dtype, el);
+					    name, &dtype, el, &the_index);
 		if (ret < 0)
 			ret = defval;
 		if (ret > 0)