From 5240c9d75d8e1b747da427ba6320432d3201168a Mon Sep 17 00:00:00 2001 From: Miklos Vajna Date: Fri, 27 Jun 2008 18:22:00 +0200 Subject: [PATCH] Introduce get_octopus_merge_bases() in commit.c This is like get_merge_bases() but it works for multiple heads, like show-branch --merge-base. Signed-off-by: Miklos Vajna Signed-off-by: Junio C Hamano --- commit.c | 27 +++++++++++++++++++++++++++ commit.h | 1 + 2 files changed, 28 insertions(+) diff --git a/commit.c b/commit.c index bbf9c7541..6052ca34c 100644 --- 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) { diff --git a/commit.h b/commit.h index 7f8c5ee0f..dcec7fb9a 100644 --- a/commit.h +++ b/commit.h @@ -121,6 +121,7 @@ int read_graft_file(const char *graft_file); struct commit_graft *lookup_commit_graft(const unsigned char *sha1); extern struct commit_list *get_merge_bases(struct commit *rev1, struct commit *rev2, int cleanup); +extern struct commit_list *get_octopus_merge_bases(struct commit_list *in); extern int register_shallow(const unsigned char *sha1); extern int unregister_shallow(const unsigned char *sha1); -- 2.26.2