diff-lib.c: remove implicit dependency on the_index

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff-lib.c

@@ -70,7 +70,7 @@ static int match_stat_with_submodule(struct diff_options *diffopt,
 				     struct stat *st, unsigned ce_option,
 				     unsigned *dirty_submodule)
 {
-	int changed = ce_match_stat(ce, st, ce_option);
+	int changed = ie_match_stat(diffopt->repo->index, ce, st, ce_option);
 	if (S_ISGITLINK(ce->ce_mode)) {
 		struct diff_flags orig_flags = diffopt->flags;
 		if (!diffopt->flags.override_submodule_config)
@@ -93,15 +93,16 @@ int run_diff_files(struct rev_info *revs, unsigned int option)
 	unsigned ce_option = ((option & DIFF_RACY_IS_MODIFIED)
 			      ? CE_MATCH_RACY_IS_DIRTY : 0);
 	uint64_t start = getnanotime();
+	struct index_state *istate = revs->diffopt.repo->index;
 
 	diff_set_mnemonic_prefix(&revs->diffopt, "i/", "w/");
 
 	if (diff_unmerged_stage < 0)
 		diff_unmerged_stage = 2;
-	entries = active_nr;
+	entries = istate->cache_nr;
 	for (i = 0; i < entries; i++) {
 		unsigned int oldmode, newmode;
-		struct cache_entry *ce = active_cache[i];
+		struct cache_entry *ce = istate->cache[i];
 		int changed;
 		unsigned dirty_submodule = 0;
 		const struct object_id *old_oid, *new_oid;
@@ -109,7 +110,7 @@ int run_diff_files(struct rev_info *revs, unsigned int option)
 		if (diff_can_quit_early(&revs->diffopt))
 			break;
 
-		if (!ce_path_match(&the_index, ce, &revs->prune_data, NULL))
+		if (!ce_path_match(istate, ce, &revs->prune_data, NULL))
 			continue;
 
 		if (ce_stage(ce)) {
@@ -145,7 +146,7 @@ int run_diff_files(struct rev_info *revs, unsigned int option)
 			dpath->mode = wt_mode;
 
 			while (i < entries) {
-				struct cache_entry *nce = active_cache[i];
+				struct cache_entry *nce = istate->cache[i];
 				int stage;
 
 				if (strcmp(ce->name, nce->name))
@@ -474,7 +475,9 @@ static int oneway_diff(const struct cache_entry * const *src,
 	if (tree == o->df_conflict_entry)
 		tree = NULL;
 
-	if (ce_path_match(&the_index, idx ? idx : tree, &revs->prune_data, NULL)) {
+	if (ce_path_match(revs->diffopt.repo->index,
+			  idx ? idx : tree,
+			  &revs->prune_data, NULL)) {
 		do_oneway_diff(o, idx, tree);
 		if (diff_can_quit_early(&revs->diffopt)) {
 			o->exiting_early = 1;
@@ -506,7 +509,7 @@ static int diff_cache(struct rev_info *revs,
 	opts.merge = 1;
 	opts.fn = oneway_diff;
 	opts.unpack_data = revs;
-	opts.src_index = &the_index;
+	opts.src_index = revs->diffopt.repo->index;
 	opts.dst_index = NULL;
 	opts.pathspec = &revs->diffopt.pathspec;
 	opts.pathspec->recursive = 1;