diff options
Diffstat (limited to 'commit-reach.c')
| -rw-r--r-- | commit-reach.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/commit-reach.c b/commit-reach.c index 01d796f011..d806291d5d 100644 --- a/commit-reach.c +++ b/commit-reach.c @@ -10,6 +10,7 @@ #include "commit-reach.h" /* Remember to update object flag allocation in object.h */ +#define REACHABLE (1u<<15) #define PARENT1 (1u<<16) #define PARENT2 (1u<<17) #define STALE (1u<<18) @@ -532,3 +533,65 @@ int commit_contains(struct ref_filter *filter, struct commit *commit, return contains_tag_algo(commit, list, cache) == CONTAINS_YES; return is_descendant_of(commit, list); } + +int reachable(struct commit *from, unsigned int with_flag, + unsigned int assign_flag, time_t min_commit_date) +{ + struct prio_queue work = { compare_commits_by_commit_date }; + + prio_queue_put(&work, from); + while (work.nr) { + struct commit_list *list; + struct commit *commit = prio_queue_get(&work); + + if (commit->object.flags & with_flag) { + from->object.flags |= assign_flag; + break; + } + if (!commit->object.parsed) + parse_object(the_repository, &commit->object.oid); + if (commit->object.flags & REACHABLE) + continue; + commit->object.flags |= REACHABLE; + if (commit->date < min_commit_date) + continue; + for (list = commit->parents; list; list = list->next) { + struct commit *parent = list->item; + if (!(parent->object.flags & REACHABLE)) + prio_queue_put(&work, parent); + } + } + from->object.flags |= REACHABLE; + clear_commit_marks(from, REACHABLE); + clear_prio_queue(&work); + return (from->object.flags & assign_flag); +} + +int can_all_from_reach_with_flag(struct object_array *from, + unsigned int with_flag, + unsigned int assign_flag, + time_t min_commit_date) +{ + int i; + + for (i = 0; i < from->nr; i++) { + struct object *from_one = from->objects[i].item; + + if (from_one->flags & assign_flag) + continue; + from_one = deref_tag(the_repository, from_one, "a from object", 0); + if (!from_one || from_one->type != OBJ_COMMIT) { + /* no way to tell if this is reachable by + * looking at the ancestry chain alone, so + * leave a note to ourselves not to worry about + * this object anymore. + */ + from->objects[i].item->flags |= assign_flag; + continue; + } + if (!reachable((struct commit *)from_one, with_flag, assign_flag, + min_commit_date)) + return 0; + } + return 1; +} |