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/*
* Copyright © 2014 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
*/
#ifndef HB_OT_SHAPE_COMPLEX_ARABIC_WIN1256_HH
/*
* The macros in the first part of this file are generic macros that can
* be used to define the bytes for OpenType table data in code in a
* readable manner. We can move the macros to reside with their respective
* struct types, but since we only use these to define one data table, the
* Windows-1256 Arabic shaping table in this file, we keep them here.
*/
/* First we measure, then we cut. */
#ifndef OT_MEASURE
#define OT_MEASURE
#define OT_TABLE_START static const struct TABLE_NAME {
#define OT_TABLE_END }
#define OT_LABEL_START(Name) unsigned char Name[
#define OT_LABEL_END ];
#define OT_BYTE(u8) +1/*byte*/
#define OT_USHORT(u16) +2/*bytes*/
#else
#undef OT_MEASURE
#define OT_TABLE_START TABLE_NAME = {
#define OT_TABLE_END };
#define OT_LABEL_START(Name) {
#define OT_LABEL_END },
#define OT_BYTE(u8) (u8),
#define OT_USHORT(u16) (unsigned char)((u16)>>8), (unsigned char)((u16)&0xFFu),
#define OT_COUNT(Name, ItemSize) ((unsigned int) sizeof(((struct TABLE_NAME*)0)->Name) \
/ (unsigned int)(ItemSize) \
/* OT_ASSERT it's divisible (and positive). */)
#define OT_DISTANCE(From,To) ((unsigned int) \
((char*)(&((struct TABLE_NAME*)0)->To) - \
(char*)(&((struct TABLE_NAME*)0)->From)) \
/* OT_ASSERT it's positive. */)
#endif
#define OT_LABEL(Name) \
OT_LABEL_END \
OT_LABEL_START(Name)
/* Whenever we receive an argument that is a list, it will expand to
* contain commas. That cannot be passed to another macro because the
* commas will throw off the preprocessor. The solution is to wrap
* the passed-in argument in OT_LIST() before passing to the next macro.
* Unfortunately this trick requires vararg macros. */
#define OT_LIST(...) __VA_ARGS__
/*
* Basic Types
*/
#define OT_TAG(a,b,c,d) \
OT_BYTE(a) OT_BYTE(b) OT_BYTE(c) OT_BYTE(d)
#define OT_OFFSET(From, To) /* Offset from From to To in bytes */ \
OT_USHORT(OT_DISTANCE(From, To))
#define OT_GLYPHID /* GlyphID */ \
OT_USHORT
#define OT_UARRAY(Name, Items) \
OT_LABEL_START(Name) \
OT_USHORT(OT_COUNT(Name##Data, 2)) \
OT_LABEL(Name##Data) \
Items \
OT_LABEL_END
#define OT_UHEADLESSARRAY(Name, Items) \
OT_LABEL_START(Name) \
OT_USHORT(OT_COUNT(Name##Data, 2) + 1) \
OT_LABEL(Name##Data) \
Items \
OT_LABEL_END
/*
* Common Types
*/
#define OT_LOOKUP_FLAG_IGNORE_MARKS 0x08u
#define OT_LOOKUP(Name, LookupType, LookupFlag, SubLookupOffsets) \
OT_LABEL_START(Name) \
OT_USHORT(LookupType) \
OT_USHORT(LookupFlag) \
OT_LABEL_END \
OT_UARRAY(Name##SubLookupOffsetsArray, OT_LIST(SubLookupOffsets))
#define OT_SUBLOOKUP(Name, SubFormat, Items) \
OT_LABEL_START(Name) \
OT_USHORT(SubFormat) \
Items
#define OT_COVERAGE1(Name, Items) \
OT_LABEL_START(Name) \
OT_USHORT(1) \
OT_LABEL_END \
OT_UARRAY(Name##Glyphs, OT_LIST(Items))
/*
* GSUB
*/
#define OT_LOOKUP_TYPE_SUBST_SINGLE 1u
#define OT_LOOKUP_TYPE_SUBST_MULTIPLE 2u
#define OT_LOOKUP_TYPE_SUBST_LIGATURE 4u
#define OT_SUBLOOKUP_SINGLE_SUBST_FORMAT2(Name, FromGlyphs, ToGlyphs) \
OT_SUBLOOKUP(Name, 2, \
OT_OFFSET(Name, Name##Coverage) \
OT_LABEL_END \
OT_UARRAY(Name##Substitute, OT_LIST(ToGlyphs)) \
) \
OT_COVERAGE1(Name##Coverage, OT_LIST(FromGlyphs)) \
/* ASSERT_STATIC_EXPR len(FromGlyphs) == len(ToGlyphs) */
#define OT_SUBLOOKUP_LIGATURE_SUBST_FORMAT1(Name, FirstGlyphs, LigatureSetOffsets) \
OT_SUBLOOKUP(Name, 1, \
OT_OFFSET(Name, Name##Coverage) \
OT_LABEL_END \
OT_UARRAY(Name##LigatureSetOffsetsArray, OT_LIST(LigatureSetOffsets)) \
) \
OT_COVERAGE1(Name##Coverage, OT_LIST(FirstGlyphs)) \
/* ASSERT_STATIC_EXPR len(FirstGlyphs) == len(LigatureSetOffsets) */
#define OT_LIGATURE_SET(Name, LigatureSetOffsets) \
OT_UARRAY(Name, OT_LIST(LigatureSetOffsets))
#define OT_LIGATURE(Name, Components, LigGlyph) \
OT_LABEL_START(Name) \
LigGlyph \
OT_LABEL_END \
OT_UHEADLESSARRAY(Name##ComponentsArray, OT_LIST(Components))
/*
*
* Start of Windows-1256 shaping table.
*
*/
/* Table name. */
#define TABLE_NAME arabic_win1256_gsub_lookups
/* Table manifest. */
#define MANIFEST(Items) \
OT_LABEL_START(manifest) \
OT_USHORT(OT_COUNT(manifestData, 6)) \
OT_LABEL(manifestData) \
Items \
OT_LABEL_END
#define MANIFEST_LOOKUP(Tag, Name) \
Tag \
OT_OFFSET(manifest, Name)
/* Shorthand. */
#define G OT_GLYPHID
/*
* Table Start
*/
OT_TABLE_START
/*
* Manifest
*/
MANIFEST(
MANIFEST_LOOKUP(OT_TAG('r','l','i','g'), rligLookup)
MANIFEST_LOOKUP(OT_TAG('i','n','i','t'), initLookup)
MANIFEST_LOOKUP(OT_TAG('m','e','d','i'), mediLookup)
MANIFEST_LOOKUP(OT_TAG('f','i','n','a'), finaLookup)
MANIFEST_LOOKUP(OT_TAG('r','l','i','g'), rligMarksLookup)
)
/*
* Lookups
*/
OT_LOOKUP(initLookup, OT_LOOKUP_TYPE_SUBST_SINGLE, OT_LOOKUP_FLAG_IGNORE_MARKS,
OT_OFFSET(initLookup, initmediSubLookup)
OT_OFFSET(initLookup, initSubLookup)
)
OT_LOOKUP(mediLookup, OT_LOOKUP_TYPE_SUBST_SINGLE, OT_LOOKUP_FLAG_IGNORE_MARKS,
OT_OFFSET(mediLookup, initmediSubLookup)
OT_OFFSET(mediLookup, mediSubLookup)
OT_OFFSET(mediLookup, medifinaLamAlefSubLookup)
)
OT_LOOKUP(finaLookup, OT_LOOKUP_TYPE_SUBST_SINGLE, OT_LOOKUP_FLAG_IGNORE_MARKS,
OT_OFFSET(finaLookup, finaSubLookup)
/* We don't need this one currently as the sequence inherits masks
* from the first item. Just in case we change that in the future
* to be smart about Arabic masks when ligating... */
OT_OFFSET(finaLookup, medifinaLamAlefSubLookup)
)
OT_LOOKUP(rligLookup, OT_LOOKUP_TYPE_SUBST_LIGATURE, OT_LOOKUP_FLAG_IGNORE_MARKS,
OT_OFFSET(rligLookup, lamAlefLigaturesSubLookup)
)
OT_LOOKUP(rligMarksLookup, OT_LOOKUP_TYPE_SUBST_LIGATURE, 0,
OT_OFFSET(rligMarksLookup, shaddaLigaturesSubLookup)
)
/*
* init/medi/fina forms
*/
OT_SUBLOOKUP_SINGLE_SUBST_FORMAT2(initmediSubLookup,
G(198) G(200) G(201) G(202) G(203) G(204) G(205) G(206) G(211)
G(212) G(213) G(214) G(223) G(225) G(227) G(228) G(236) G(237),
G(162) G(4) G(5) G(5) G(6) G(7) G(9) G(11) G(13)
G(14) G(15) G(26) G(140) G(141) G(142) G(143) G(154) G(154)
)
OT_SUBLOOKUP_SINGLE_SUBST_FORMAT2(initSubLookup,
G(218) G(219) G(221) G(222) G(229),
G(27) G(30) G(128) G(131) G(144)
)
OT_SUBLOOKUP_SINGLE_SUBST_FORMAT2(mediSubLookup,
G(218) G(219) G(221) G(222) G(229),
G(28) G(31) G(129) G(138) G(149)
)
OT_SUBLOOKUP_SINGLE_SUBST_FORMAT2(finaSubLookup,
G(194) G(195) G(197) G(198) G(199) G(201) G(204) G(205) G(206)
G(218) G(219) G(229) G(236) G(237),
G(2) G(1) G(3) G(181) G(0) G(159) G(8) G(10) G(12)
G(29) G(127) G(152) G(160) G(156)
)
OT_SUBLOOKUP_SINGLE_SUBST_FORMAT2(medifinaLamAlefSubLookup,
G(165) G(178) G(180) G(252),
G(170) G(179) G(185) G(255)
)
/*
* Lam+Alef ligatures
*/
OT_SUBLOOKUP_LIGATURE_SUBST_FORMAT1(lamAlefLigaturesSubLookup,
G(225),
OT_OFFSET(lamAlefLigaturesSubLookup, lamLigatureSet)
)
OT_LIGATURE_SET(lamLigatureSet,
OT_OFFSET(lamLigatureSet, lamInitLigature1)
OT_OFFSET(lamLigatureSet, lamInitLigature2)
OT_OFFSET(lamLigatureSet, lamInitLigature3)
OT_OFFSET(lamLigatureSet, lamInitLigature4)
)
OT_LIGATURE(lamInitLigature1, G(199), G(165))
OT_LIGATURE(lamInitLigature2, G(195), G(178))
OT_LIGATURE(lamInitLigature3, G(194), G(180))
OT_LIGATURE(lamInitLigature4, G(197), G(252))
/*
* Shadda ligatures
*/
OT_SUBLOOKUP_LIGATURE_SUBST_FORMAT1(shaddaLigaturesSubLookup,
G(248),
OT_OFFSET(shaddaLigaturesSubLookup, shaddaLigatureSet)
)
OT_LIGATURE_SET(shaddaLigatureSet,
OT_OFFSET(shaddaLigatureSet, shaddaLigature1)
OT_OFFSET(shaddaLigatureSet, shaddaLigature2)
OT_OFFSET(shaddaLigatureSet, shaddaLigature3)
)
OT_LIGATURE(shaddaLigature1, G(243), G(172))
OT_LIGATURE(shaddaLigature2, G(245), G(173))
OT_LIGATURE(shaddaLigature3, G(246), G(175))
/*
* Table end
*/
OT_TABLE_END
/*
* Clean up
*/
#undef OT_TABLE_START
#undef OT_TABLE_END
#undef OT_LABEL_START
#undef OT_LABEL_END
#undef OT_BYTE
#undef OT_USHORT
#undef OT_DISTANCE
#undef OT_COUNT
/*
* Include a second time to get the table data...
*/
#if 0
#include "hb-private.hh" /* Make check-includes.sh happy. */
#endif
#ifdef OT_MEASURE
#include "hb-ot-shape-complex-arabic-win1256.hh"
#endif
#define HB_OT_SHAPE_COMPLEX_ARABIC_WIN1256_HH
#endif /* HB_OT_SHAPE_COMPLEX_ARABIC_WIN1256_HH */
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