[PATCH v4 4/5] diff-lib: refactor match_stat_with_submodule

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Flatten out the if statements in match_stat_with_submodule so the
logic is more readable and easier for future patches to add to.
orig_flags didn't need to be set if the cache entry wasn't a
GITLINK so defer setting it.

Signed-off-by: Calvin Wan <calvinwan@xxxxxxxxxx>
---
 diff-lib.c | 29 ++++++++++++++++++-----------
 1 file changed, 18 insertions(+), 11 deletions(-)

diff --git a/diff-lib.c b/diff-lib.c
index 2edea41a23..f5257c0c71 100644
--- a/diff-lib.c
+++ b/diff-lib.c
@@ -73,18 +73,25 @@ static int match_stat_with_submodule(struct diff_options *diffopt,
 				     unsigned *dirty_submodule)
 {
 	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)
-			set_diffopt_flags_from_submodule_config(diffopt, ce->name);
-		if (diffopt->flags.ignore_submodules)
-			changed = 0;
-		else if (!diffopt->flags.ignore_dirty_submodules &&
-			 (!changed || diffopt->flags.dirty_submodules))
-			*dirty_submodule = is_submodule_modified(ce->name,
-								 diffopt->flags.ignore_untracked_in_submodules);
-		diffopt->flags = orig_flags;
+	struct diff_flags orig_flags;
+
+	if (!S_ISGITLINK(ce->ce_mode))
+		goto ret;
+
+	orig_flags = diffopt->flags;
+	if (!diffopt->flags.override_submodule_config)
+		set_diffopt_flags_from_submodule_config(diffopt, ce->name);
+	if (diffopt->flags.ignore_submodules) {
+		changed = 0;
+		goto cleanup;
 	}
+	if (!diffopt->flags.ignore_dirty_submodules &&
+	    (!changed || diffopt->flags.dirty_submodules))
+		*dirty_submodule = is_submodule_modified(ce->name,
+					 diffopt->flags.ignore_untracked_in_submodules);
+cleanup:
+	diffopt->flags = orig_flags;
+ret:
 	return changed;
 }
 
-- 
2.38.1.431.g37b22c650d-goog




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