/*

 * Copyright © 2022  Google, Inc.

 *

 *  This is part of HarfBuzz, a text shaping library.

 *

 * Permission is hereby granted, without written agreement and without

 * license or royalty fees, to use, copy, modify, and distribute this

 * software and its documentation for any purpose, provided that the

 * above copyright notice and the following two paragraphs appear in

 * all copies of this software.

 *

 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR

 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES

 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN

 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH

 * DAMAGE.

 *

 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,

 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND

 * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS

 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO

 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.

 *

 */

#include "hb.hh"

#include "hb-subset-serialize.h"

#include "hb-repacker.hh"

/**

 * hb_subset_serialize_or_fail:

 * @table_tag: tag of the table being packed, needed to allow table specific optimizations.

 * @hb_objects: raw array of struct hb_subset_serialize_object_t, which provides

 * object graph info

 * @num_hb_objs: number of hb_subset_serialize_object_t in the hb_objects array.

 *

 * Given the input object graph info, repack a table to eliminate offset overflows and

 * serialize it into a continuous array of bytes. A nullptr is returned if the serializing attempt fails.

 * Table specific optimizations (eg. extension promotion in GSUB/GPOS) may be performed.

 * Passing HB_TAG_NONE will disable table specific optimizations.

 *

 * Since: 10.2.0

 **/

HB_EXTERN hb_blob_t *

hb_subset_serialize_or_fail (hb_tag_t                      table_tag,

                             hb_subset_serialize_object_t *hb_objects,

                             unsigned                      num_hb_objs)

{

  hb_vector_t<const hb_subset_serialize_object_t *> packed;

  packed.alloc (num_hb_objs + 1);

  packed.push (nullptr);

  for (unsigned i = 0 ; i < num_hb_objs ; i++)

    packed.push (&(hb_objects[i]));

  return hb_resolve_overflows (packed, table_tag, 20, true);

}