int git_rebase_next(
git_rebase_operation **out,
git_rebase *rebase)
{
int error;
assert(out && rebase);
if ((error = rebase_movenext(rebase)) < 0)
return error;
if (rebase->inmemory)
error = rebase_next_inmemory(out, rebase);
else if (rebase->type == GIT_REBASE_TYPE_MERGE)
error = rebase_next_merge(out, rebase);
else
abort();
return error;
}
static int rebase_next_merge(
git_rebase_operation **out,
git_rebase *rebase,
git_checkout_options *given_checkout_opts)
{
git_buf path = GIT_BUF_INIT;
git_checkout_options checkout_opts = {0};
git_commit *current_commit = NULL, *parent_commit = NULL;
git_tree *current_tree = NULL, *head_tree = NULL, *parent_tree = NULL;
git_index *index = NULL;
git_indexwriter indexwriter = GIT_INDEXWRITER_INIT;
git_rebase_operation *operation;
char current_idstr[GIT_OID_HEXSZ];
unsigned int parent_count;
int error;
*out = NULL;
if ((error = rebase_movenext(rebase)) < 0)
goto done;
operation = git_array_get(rebase->operations, rebase->current);
if ((error = git_commit_lookup(¤t_commit, rebase->repo, &operation->id)) < 0 ||
(error = git_commit_tree(¤t_tree, current_commit)) < 0 ||
(error = git_repository_head_tree(&head_tree, rebase->repo)) < 0)
goto done;
if ((parent_count = git_commit_parentcount(current_commit)) > 1) {
giterr_set(GITERR_REBASE, "Cannot rebase a merge commit");
error = -1;
goto done;
} else if (parent_count) {
if ((error = git_commit_parent(&parent_commit, current_commit, 0)) < 0 ||
(error = git_commit_tree(&parent_tree, parent_commit)) < 0)
goto done;
}
git_oid_fmt(current_idstr, &operation->id);
normalize_checkout_opts(rebase, current_commit, &checkout_opts, given_checkout_opts);
if ((error = git_indexwriter_init_for_operation(&indexwriter, rebase->repo, &checkout_opts.checkout_strategy)) < 0 ||
(error = rebase_setupfile(rebase, MSGNUM_FILE, -1, "%d\n", rebase->current+1)) < 0 ||
(error = rebase_setupfile(rebase, CURRENT_FILE, -1, "%.*s\n", GIT_OID_HEXSZ, current_idstr)) < 0 ||
(error = git_merge_trees(&index, rebase->repo, parent_tree, head_tree, current_tree, NULL)) < 0 ||
(error = git_merge__check_result(rebase->repo, index)) < 0 ||
(error = git_checkout_index(rebase->repo, index, &checkout_opts)) < 0 ||
(error = git_indexwriter_commit(&indexwriter)) < 0)
goto done;
*out = operation;
done:
git_indexwriter_cleanup(&indexwriter);
git_index_free(index);
git_tree_free(current_tree);
git_tree_free(head_tree);
git_tree_free(parent_tree);
git_commit_free(parent_commit);
git_commit_free(current_commit);
git_buf_free(&path);
return error;
}
