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Diffstat (limited to 'thirdparty/harfbuzz/src/hb-ot-shaper-arabic-win1256.hh')
| -rw-r--r-- | thirdparty/harfbuzz/src/hb-ot-shaper-arabic-win1256.hh | 349 |
1 files changed, 349 insertions, 0 deletions
diff --git a/thirdparty/harfbuzz/src/hb-ot-shaper-arabic-win1256.hh b/thirdparty/harfbuzz/src/hb-ot-shaper-arabic-win1256.hh new file mode 100644 index 0000000000..b8d481c813 --- /dev/null +++ b/thirdparty/harfbuzz/src/hb-ot-shaper-arabic-win1256.hh @@ -0,0 +1,349 @@ +/* + * 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_SHAPER_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_UINT8(u8) +1/*byte*/ +#define OT_UINT16(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_UINT8(u8) (u8), +#define OT_UINT16(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_UINT8(a) OT_UINT8(b) OT_UINT8(c) OT_UINT8(d) + +#define OT_OFFSET(From, To) /* Offset from From to To in bytes */ \ + OT_UINT16(OT_DISTANCE(From, To)) + +#define OT_GLYPHID /* GlyphID */ \ + OT_UINT16 +/* Shorthand. */ +#define G OT_GLYPHID + +#define OT_UARRAY(Name, Items) \ + OT_LABEL_START(Name) \ + OT_UINT16(OT_COUNT(Name##Data, 2)) \ + OT_LABEL(Name##Data) \ + Items \ + OT_LABEL_END + +#define OT_UHEADLESSARRAY(Name, Items) \ + OT_LABEL_START(Name) \ + OT_UINT16(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_UINT16(LookupType) \ + OT_UINT16(LookupFlag) \ + OT_LABEL_END \ + OT_UARRAY(Name##SubLookupOffsetsArray, OT_LIST(SubLookupOffsets)) + +#define OT_SUBLOOKUP(Name, SubFormat, Items) \ + OT_LABEL_START(Name) \ + OT_UINT16(SubFormat) \ + Items + +#define OT_COVERAGE1(Name, Items) \ + OT_LABEL_START(Name) \ + OT_UINT16(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)) \ + /* static_assert_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)) \ + /* static_assert_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_UINT16(OT_COUNT(manifestData, 6)) \ + OT_LABEL(manifestData) \ + Items \ + OT_LABEL_END + +#define MANIFEST_LOOKUP(Tag, Name) \ + Tag \ + OT_OFFSET(manifest, Name) + + +/* + * 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 MANIFEST +#undef MANIFEST_LOOKUP + +#undef OT_TABLE_START +#undef OT_TABLE_END +#undef OT_LABEL_START +#undef OT_LABEL_END +#undef OT_UINT8 +#undef OT_UINT16 +#undef OT_COUNT +#undef OT_DISTANCE + +#undef OT_LABEL +#undef OT_LIST + +#undef OT_TAG +#undef OT_OFFSET +#undef OT_GLYPHID +#undef G +#undef OT_UARRAY +#undef OT_UHEADLESSARRAY + +#undef OT_LOOKUP_FLAG_IGNORE_MARKS +#undef OT_LOOKUP +#undef OT_SUBLOOKUP +#undef OT_COVERAGE1 +#undef OT_LOOKUP_TYPE_SUBST_SINGLE +#undef OT_LOOKUP_TYPE_SUBST_LIGATURE +#undef OT_SUBLOOKUP_SINGLE_SUBST_FORMAT2 +#undef OT_SUBLOOKUP_LIGATURE_SUBST_FORMAT1 +#undef OT_LIGATURE_SET +#undef OT_LIGATURE + + +/* + * Include a second time to get the table data... + */ +#if 0 +#include "hb.hh" /* Make check-includes.sh happy. */ +#endif +#ifdef OT_MEASURE +#include "hb-ot-shaper-arabic-win1256.hh" +#endif + +#define HB_OT_SHAPER_ARABIC_WIN1256_HH +#endif /* HB_OT_SHAPER_ARABIC_WIN1256_HH */ |