Introduce get_octopus_merge_bases() in commit.c

[thirdparty/git.git] / commit.c

diff --git a/commit.c b/commit.c
index bbf9c75416537f4e64416d54b03cd00f9d0a56db..6052ca34c803e6af432309041c8e3201b71efca4 100644 (file)
--- a/commit.c
+++ b/commit.c
@@ -600,6 +600,33 @@ static struct commit_list *merge_bases(struct commit *one, struct commit *two)
        return result;
 }
 
+struct commit_list *get_octopus_merge_bases(struct commit_list *in)
+{
+       struct commit_list *i, *j, *k, *ret = NULL;
+       struct commit_list **pptr = &ret;
+
+       for (i = in; i; i = i->next) {
+               if (!ret)
+                       pptr = &commit_list_insert(i->item, pptr)->next;
+               else {
+                       struct commit_list *new = NULL, *end = NULL;
+
+                       for (j = ret; j; j = j->next) {
+                               struct commit_list *bases;
+                               bases = get_merge_bases(i->item, j->item, 1);
+                               if (!new)
+                                       new = bases;
+                               else
+                                       end->next = bases;
+                               for (k = bases; k; k = k->next)
+                                       end = k;
+                       }
+                       ret = new;
+               }
+       }
+       return ret;
+}
+
 struct commit_list *get_merge_bases(struct commit *one,
                                        struct commit *two, int cleanup)
 {