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[RFC PATCH 2/4] commit-list: add a function to check if a commit is in a list




To avoid naming some commits, name_rev() will need to check if a commit
is part of a commit list.

Signed-off-by: Alban Gruin <alban.gruin@xxxxxxxxx>
---
 commit.c | 12 ++++++++++++
 commit.h |  1 +
 2 files changed, 13 insertions(+)

diff --git a/commit.c b/commit.c
index a5333c7ac6..fcb3e9245f 100644
--- a/commit.c
+++ b/commit.c
@@ -524,6 +524,18 @@ struct commit_list *commit_list_insert(struct commit *item, struct commit_list *
 	return new_list;
 }
 
+int commit_list_contains(const struct commit_list *l, struct commit *commit)
+{
+	const struct commit_list *item;
+
+	for (item = l; item != NULL; item = item->next) {
+		if (oideq(&item->item->object.oid, &commit->object.oid))
+			return 1;
+	}
+
+	return 0;
+}
+
 unsigned commit_list_count(const struct commit_list *l)
 {
 	unsigned c = 0;
diff --git a/commit.h b/commit.h
index 42728c2906..c9df613b0e 100644
--- a/commit.h
+++ b/commit.h
@@ -165,6 +165,7 @@ struct commit_list *commit_list_insert(struct commit *item,
 					struct commit_list **list);
 struct commit_list **commit_list_append(struct commit *commit,
 					struct commit_list **next);
+int commit_list_contains(const struct commit_list *l, struct commit *commit);
 unsigned commit_list_count(const struct commit_list *l);
 struct commit_list *commit_list_insert_by_date(struct commit *item,
 				    struct commit_list **list);
-- 
2.20.1