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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
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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_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_ZERO (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_ZERO (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 */