harfbuzz/src/hb-ot-name.cc

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/*
* 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-ot-name-table.hh"
#include "hb-ot-face.hh"
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#include "hb-utf.hh"
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static inline const OT::name_accelerator_t&
_get_name (hb_face_t *face)
{
if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return Null(OT::name_accelerator_t);
return *(hb_ot_face_data (face)->name.get ());
}
unsigned int
hb_ot_name_get_names (hb_face_t *face,
const hb_ot_name_entry_t **entries /* OUT */)
{
const OT::name_accelerator_t &name = _get_name (face);
if (entries)
*entries = name.names.arrayZ();
return name.names.len;
}
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template <typename utf_t>
static inline unsigned int
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hb_ot_name_get_utf (hb_face_t *face,
hb_name_id_t name_id,
hb_language_t language,
unsigned int *text_size /* IN/OUT */,
typename utf_t::codepoint_t *text /* OUT */)
{
const OT::name_accelerator_t &name = _get_name (face);
unsigned int idx = 0; //XXX
hb_bytes_t bytes = name.table->get_name (idx);
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if (text_size && *text_size)
{
/* TODO Switch to walking string and validating. */
memcpy (text, bytes.arrayZ, MIN (*text_size * 2, bytes.len));
}
/* XXX Null-terminate. */
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if (text_size)
*text_size = bytes.len / 2; //TODO
/* TODO Fallback? */
return *text_size; //XXX
}
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unsigned int
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hb_ot_name_get_utf16 (hb_face_t *face,
hb_name_id_t name_id,
hb_language_t language,
unsigned int *text_size /* IN/OUT */,
uint16_t *text /* OUT */)
{
return hb_ot_name_get_utf<hb_utf16_t> (face, name_id, language, text_size, text);
}