93 lines
2.6 KiB
C++
93 lines
2.6 KiB
C++
/*
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* Copyright © 2018 Ebrahim Byagowi
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*
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* This is part of HarfBuzz, a text shaping library.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*/
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#ifndef HB_AAT_LTAG_TABLE_HH
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#define HB_AAT_LTAG_TABLE_HH
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#include "hb-open-type.hh"
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/*
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* ltag -- Language Tag
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* https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6ltag.html
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*/
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#define HB_AAT_TAG_ltag HB_TAG('l','t','a','g')
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namespace AAT {
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using namespace OT;
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struct FTStringRange
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{
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friend struct ltag;
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inline bool sanitize (hb_sanitize_context_t *c, const void *base) const
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{
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TRACE_SANITIZE (this);
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return_trace (c->check_struct (this) && (base+tag).sanitize (c, length));
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}
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protected:
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OffsetTo<UnsizedArrayOf<HBUINT8>, HBUINT16, false>
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tag; /* Offset from the start of the table to
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* the beginning of the string */
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HBUINT16 length; /* String length (in bytes) */
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public:
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DEFINE_SIZE_STATIC (4);
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};
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struct ltag
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{
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static const hb_tag_t tableTag = HB_AAT_TAG_ltag;
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inline hb_language_t get_language (unsigned int i) const
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{
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const FTStringRange &range = tagRanges[i];
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return hb_language_from_string ((const char *) (this+range.tag).arrayZ,
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range.length);
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}
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inline bool sanitize (hb_sanitize_context_t *c) const
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{
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TRACE_SANITIZE (this);
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return_trace (likely (c->check_struct (this) &&
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version >= 1 &&
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tagRanges.sanitize (c, this)));
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}
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protected:
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HBUINT32 version; /* Table version; currently 1 */
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HBUINT32 flags; /* Table flags; currently none defined */
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LArrayOf<FTStringRange>
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tagRanges; /* Range for each tag's string */
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public:
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DEFINE_SIZE_ARRAY (12, tagRanges);
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};
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} /* namespace AAT */
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#endif /* HB_AAT_LTAG_TABLE_HH */
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