/*
* Copyright © 2018 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.
*
* Google Author(s): Behdad Esfahbod
*/
#include "hb.hh"
#include "hb-open-type.hh"
#include "hb-face.hh"
#include "hb-aat-layout-common.hh"
#include "hb-aat-layout-feat-table.hh"
#include "hb-ot-layout-common.hh"
#include "hb-ot-cmap-table.hh"
#include "hb-ot-glyf-table.hh"
#include "hb-ot-head-table.hh"
#include "hb-ot-maxp-table.hh"
#ifndef HB_NO_VISIBILITY
#include "hb-ot-name-language-static.hh"
uint64_t const _hb_NullPool[(HB_NULL_POOL_SIZE + sizeof (uint64_t) - 1) / sizeof (uint64_t)] = {};
/*thread_local*/ uint64_t _hb_CrapPool[(HB_NULL_POOL_SIZE + sizeof (uint64_t) - 1) / sizeof (uint64_t)] = {};
DEFINE_NULL_NAMESPACE_BYTES (OT, Index) = {0xFF,0xFF};
DEFINE_NULL_NAMESPACE_BYTES (OT, VarIdx) = {0xFF,0xFF,0xFF,0xFF};
DEFINE_NULL_NAMESPACE_BYTES (OT, LangSys) = {0x00,0x00, 0xFF,0xFF, 0x00,0x00};
DEFINE_NULL_NAMESPACE_BYTES (OT, RangeRecord) = {0x01};
DEFINE_NULL_NAMESPACE_BYTES (OT, CmapSubtableLongGroup) = {0x00,0x00,0x00,0x01, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00};
DEFINE_NULL_NAMESPACE_BYTES (AAT, SettingName) = {0xFF,0xFF, 0xFF,0xFF};
DEFINE_NULL_NAMESPACE_BYTES (AAT, Lookup) = {0xFF,0xFF};
/* hb_map_t */
const hb_codepoint_t minus_1 = -1;
/* hb_face_t */
#ifndef HB_NO_BEYOND_64K
static inline unsigned
load_num_glyphs_from_loca (const hb_face_t *face)
{
unsigned ret = 0;
unsigned indexToLocFormat = face->table.head->indexToLocFormat;
if (indexToLocFormat <= 1)
{
bool short_offset = 0 == indexToLocFormat;
hb_blob_t *loca_blob = face->table.loca.get_blob ();
ret = hb_max (1u, loca_blob->length / (short_offset ? 2 : 4)) - 1;
}
return ret;
}
#endif
static inline unsigned
load_num_glyphs_from_maxp (const hb_face_t *face)
{
return face->table.maxp->get_num_glyphs ();
}
unsigned int
hb_face_t::load_num_glyphs () const
{
unsigned ret = 0;
#ifndef HB_NO_BEYOND_64K
ret = hb_max (ret, load_num_glyphs_from_loca (this));
#endif
ret = hb_max (ret, load_num_glyphs_from_maxp (this));
num_glyphs.set_relaxed (ret);
return ret;
}
unsigned int
hb_face_t::load_upem () const
{
unsigned int ret = table.head->get_upem ();
upem.set_relaxed (ret);
return ret;
}
/* hb_user_data_array_t */
bool
hb_user_data_array_t::set (hb_user_data_key_t *key,
void * data,
hb_destroy_func_t destroy,
hb_bool_t replace)
{
if (!key)
return false;
if (replace) {
if (!data && !destroy) {
items.remove (key, lock);
return true;
}
}
hb_user_data_item_t item = {key, data, destroy};
bool ret = !!items.replace_or_insert (item, lock, (bool) replace);
return ret;
}
void *
hb_user_data_array_t::get (hb_user_data_key_t *key)
{
hb_user_data_item_t item = {nullptr, nullptr, nullptr};
return items.find (key, &item, lock) ? item.data : nullptr;
}
#endif
