diff options
Diffstat (limited to 'remote.c')
| -rw-r--r-- | remote.c | 102 |
1 files changed, 99 insertions, 3 deletions
@@ -1195,6 +1195,101 @@ static struct ref **tail_ref(struct ref **head) return tail; } +struct tips { + struct commit **tip; + int nr, alloc; +}; + +static void add_to_tips(struct tips *tips, const unsigned char *sha1) +{ + struct commit *commit; + + if (is_null_sha1(sha1)) + return; + commit = lookup_commit_reference_gently(sha1, 1); + if (!commit || (commit->object.flags & TMP_MARK)) + return; + commit->object.flags |= TMP_MARK; + ALLOC_GROW(tips->tip, tips->nr + 1, tips->alloc); + tips->tip[tips->nr++] = commit; +} + +static void add_missing_tags(struct ref *src, struct ref **dst, struct ref ***dst_tail) +{ + struct string_list dst_tag = STRING_LIST_INIT_NODUP; + struct string_list src_tag = STRING_LIST_INIT_NODUP; + struct string_list_item *item; + struct ref *ref; + struct tips sent_tips; + + /* + * Collect everything we know they would have at the end of + * this push, and collect all tags they have. + */ + memset(&sent_tips, 0, sizeof(sent_tips)); + for (ref = *dst; ref; ref = ref->next) { + if (ref->peer_ref && + !is_null_sha1(ref->peer_ref->new_sha1)) + add_to_tips(&sent_tips, ref->peer_ref->new_sha1); + else + add_to_tips(&sent_tips, ref->old_sha1); + if (!prefixcmp(ref->name, "refs/tags/")) + string_list_append(&dst_tag, ref->name); + } + clear_commit_marks_many(sent_tips.nr, sent_tips.tip, TMP_MARK); + + sort_string_list(&dst_tag); + + /* Collect tags they do not have. */ + for (ref = src; ref; ref = ref->next) { + if (prefixcmp(ref->name, "refs/tags/")) + continue; /* not a tag */ + if (string_list_has_string(&dst_tag, ref->name)) + continue; /* they already have it */ + if (sha1_object_info(ref->new_sha1, NULL) != OBJ_TAG) + continue; /* be conservative */ + item = string_list_append(&src_tag, ref->name); + item->util = ref; + } + string_list_clear(&dst_tag, 0); + + /* + * At this point, src_tag lists tags that are missing from + * dst, and sent_tips lists the tips we are pushing or those + * that we know they already have. An element in the src_tag + * that is an ancestor of any of the sent_tips needs to be + * sent to the other side. + */ + if (sent_tips.nr) { + for_each_string_list_item(item, &src_tag) { + struct ref *ref = item->util; + struct ref *dst_ref; + struct commit *commit; + + if (is_null_sha1(ref->new_sha1)) + continue; + commit = lookup_commit_reference_gently(ref->new_sha1, 1); + if (!commit) + /* not pushing a commit, which is not an error */ + continue; + + /* + * Is this tag, which they do not have, reachable from + * any of the commits we are sending? + */ + if (!in_merge_bases_many(commit, sent_tips.nr, sent_tips.tip)) + continue; + + /* Add it in */ + dst_ref = make_linked_ref(ref->name, dst_tail); + hashcpy(dst_ref->new_sha1, ref->new_sha1); + dst_ref->peer_ref = copy_ref(ref); + } + } + string_list_clear(&src_tag, 0); + free(sent_tips.tip); +} + /* * Given the set of refs the local repository has, the set of refs the * remote repository has, and the refspec used for push, determine @@ -1227,9 +1322,6 @@ int match_push_refs(struct ref *src, struct ref **dst, const struct refspec *pat = NULL; char *dst_name; - if (ref->peer_ref) - continue; - dst_name = get_ref_match(rs, nr_refspec, ref, send_mirror, FROM_SRC, &pat); if (!dst_name) continue; @@ -1257,6 +1349,10 @@ int match_push_refs(struct ref *src, struct ref **dst, free_name: free(dst_name); } + + if (flags & MATCH_REFS_FOLLOW_TAGS) + add_missing_tags(src, dst, &dst_tail); + if (send_prune) { /* check for missing refs on the remote */ for (ref = *dst; ref; ref = ref->next) { |