Function commit_tree_ext

builtin/history.c:101–158

};

static int commit_tree_ext(struct repository *repo,
			   const char *action,
			   struct commit *commit_with_message,
			   const struct commit_list *parents,
			   const struct object_id *old_tree,
			   const struct object_id *new_tree,
			   struct commit **out,
			   enum commit_tree_flags flags)
{
	const char *exclude_gpgsig[] = {
		/* We reencode the message, so the encoding needs to be stripped. */
		"encoding",
		/* We need to strip signatures as those will become invalid. */
		"gpgsig",
		"gpgsig-sha256",
		NULL,
	};
	const char *original_message, *original_body, *ptr;
	struct commit_extra_header *original_extra_headers = NULL;
	struct strbuf commit_message = STRBUF_INIT;
	struct object_id rewritten_commit_oid;
	char *original_author = NULL;
	size_t len;
	int ret;

	/* We retain authorship of the original commit. */
	original_message = repo_logmsg_reencode(repo, commit_with_message, NULL, NULL);
	ptr = find_commit_header(original_message, "author", &len);
	if (ptr)
		original_author = xmemdupz(ptr, len);
	find_commit_subject(original_message, &original_body);

	if (flags & COMMIT_TREE_EDIT_MESSAGE) {
		ret = fill_commit_message(repo, old_tree, new_tree,
					  original_body, action, &commit_message);
		if (ret < 0)
			goto out;
	} else {
		strbuf_addstr(&commit_message, original_body);
	}

	original_extra_headers = read_commit_extra_headers(commit_with_message,
							   exclude_gpgsig);

	ret = commit_tree_extended(commit_message.buf, commit_message.len, new_tree,
				   parents, &rewritten_commit_oid, original_author,
				   NULL, NULL, original_extra_headers);
	if (ret < 0)
		goto out;

	*out = lookup_commit_or_die(&rewritten_commit_oid, "rewritten commit");

out:
	free_commit_extra_headers(original_extra_headers);
	strbuf_release(&commit_message);
	free(original_author);
	return ret;
}