git-rev-list: split out commit limiting from main() too.

Ok, now I'm happier.

diff --git a/rev-list.c b/rev-list.c
index 8775b6558d69686e8446a8a271be753bf939cdd0..56dd814c0e029c0ac6fe2fffa3f65a2d52187b53 100644 (file)
--- a/rev-list.c
+++ b/rev-list.c
@@ -84,6 +84,25 @@ static int everybody_uninteresting(struct commit_list *list)
        return 1;
 }
 
+struct commit_list *limit_list(struct commit_list *list, struct commit *end)
+{
+       struct commit_list *newlist = NULL;
+       struct commit_list **p = &newlist;
+       do {
+               struct commit *commit = pop_most_recent_commit(&list, SEEN);
+               struct object *obj = &commit->object;
+
+               if (commit == end || (obj->flags & UNINTERESTING)) {
+                       mark_parents_uninteresting(commit);
+                       if (everybody_uninteresting(list))
+                               break;
+                       continue;
+               }
+               p = &commit_list_insert(commit, p)->next;
+       } while (list);
+       return newlist;
+}
+
 int main(int argc, char **argv)
 {
        int nr_sha;
@@ -144,23 +163,8 @@ int main(int argc, char **argv)
        }
 
        commit_list_insert(commit, &list);
-       if (end) {
-               struct commit_list *newlist = NULL;
-               struct commit_list **p = &newlist;
-               do {
-                       struct commit *commit = pop_most_recent_commit(&list, SEEN);
-                       struct object *obj = &commit->object;
-
-                       if (commit == end || (obj->flags & UNINTERESTING)) {
-                               mark_parents_uninteresting(commit);
-                               if (everybody_uninteresting(list))
-                                       break;
-                               continue;
-                       }
-                       p = &commit_list_insert(commit, p)->next;
-               } while (list);
-               list = newlist;
-       }
+       if (end)
+               list = limit_list(list, end);
 
        show_commit_list(list);
        return 0;