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comparison mupdf-source/thirdparty/harfbuzz/src/hb-ot-shaper-arabic-win1256.hh @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
1 /*
2 * Copyright © 2014 Google, Inc.
3 *
4 * This is part of HarfBuzz, a text shaping library.
5 *
6 * Permission is hereby granted, without written agreement and without
7 * license or royalty fees, to use, copy, modify, and distribute this
8 * software and its documentation for any purpose, provided that the
9 * above copyright notice and the following two paragraphs appear in
10 * all copies of this software.
11 *
12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
16 * DAMAGE.
17 *
18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
23 *
24 * Google Author(s): Behdad Esfahbod
25 */
26
27 #ifndef HB_OT_SHAPER_ARABIC_WIN1256_HH
28
29
30 /*
31 * The macros in the first part of this file are generic macros that can
32 * be used to define the bytes for OpenType table data in code in a
33 * readable manner. We can move the macros to reside with their respective
34 * struct types, but since we only use these to define one data table, the
35 * Windows-1256 Arabic shaping table in this file, we keep them here.
36 */
37
38
39 /* First we measure, then we cut. */
40 #ifndef OT_MEASURE
41 #define OT_MEASURE
42 #define OT_TABLE_START static const struct TABLE_NAME {
43 #define OT_TABLE_END }
44 #define OT_LABEL_START(Name) unsigned char Name[
45 #define OT_LABEL_END ];
46 #define OT_UINT8(u8) +1/*byte*/
47 #define OT_UINT16(u16) +2/*bytes*/
48 #else
49 #undef OT_MEASURE
50 #define OT_TABLE_START TABLE_NAME = {
51 #define OT_TABLE_END };
52 #define OT_LABEL_START(Name) {
53 #define OT_LABEL_END },
54 #define OT_UINT8(u8) (u8),
55 #define OT_UINT16(u16) (unsigned char)((u16)>>8), (unsigned char)((u16)&0xFFu),
56 #define OT_COUNT(Name, ItemSize) ((unsigned int) sizeof(((struct TABLE_NAME*)0)->Name) \
57 / (unsigned int)(ItemSize) \
58 /* OT_ASSERT it's divisible (and positive). */)
59 #define OT_DISTANCE(From,To) ((unsigned int) \
60 ((char*)(&((struct TABLE_NAME*)0)->To) - \
61 (char*)(&((struct TABLE_NAME*)0)->From)) \
62 /* OT_ASSERT it's positive. */)
63 #endif
64
65
66 #define OT_LABEL(Name) \
67 OT_LABEL_END \
68 OT_LABEL_START(Name)
69
70 /* Whenever we receive an argument that is a list, it will expand to
71 * contain commas. That cannot be passed to another macro because the
72 * commas will throw off the preprocessor. The solution is to wrap
73 * the passed-in argument in OT_LIST() before passing to the next macro.
74 * Unfortunately this trick requires vararg macros. */
75 #define OT_LIST(...) __VA_ARGS__
76
77
78 /*
79 * Basic Types
80 */
81
82 #define OT_TAG(a,b,c,d) \
83 OT_UINT8(a) OT_UINT8(b) OT_UINT8(c) OT_UINT8(d)
84
85 #define OT_OFFSET(From, To) /* Offset from From to To in bytes */ \
86 OT_UINT16(OT_DISTANCE(From, To))
87
88 #define OT_GLYPHID /* GlyphID */ \
89 OT_UINT16
90 /* Shorthand. */
91 #define G OT_GLYPHID
92
93 #define OT_UARRAY(Name, Items) \
94 OT_LABEL_START(Name) \
95 OT_UINT16(OT_COUNT(Name##Data, 2)) \
96 OT_LABEL(Name##Data) \
97 Items \
98 OT_LABEL_END
99
100 #define OT_UHEADLESSARRAY(Name, Items) \
101 OT_LABEL_START(Name) \
102 OT_UINT16(OT_COUNT(Name##Data, 2) + 1) \
103 OT_LABEL(Name##Data) \
104 Items \
105 OT_LABEL_END
106
107
108 /*
109 * Common Types
110 */
111
112 #define OT_LOOKUP_FLAG_IGNORE_MARKS 0x08u
113
114 #define OT_LOOKUP(Name, LookupType, LookupFlag, SubLookupOffsets) \
115 OT_LABEL_START(Name) \
116 OT_UINT16(LookupType) \
117 OT_UINT16(LookupFlag) \
118 OT_LABEL_END \
119 OT_UARRAY(Name##SubLookupOffsetsArray, OT_LIST(SubLookupOffsets))
120
121 #define OT_SUBLOOKUP(Name, SubFormat, Items) \
122 OT_LABEL_START(Name) \
123 OT_UINT16(SubFormat) \
124 Items
125
126 #define OT_COVERAGE1(Name, Items) \
127 OT_LABEL_START(Name) \
128 OT_UINT16(1) \
129 OT_LABEL_END \
130 OT_UARRAY(Name##Glyphs, OT_LIST(Items))
131
132
133 /*
134 * GSUB
135 */
136
137 #define OT_LOOKUP_TYPE_SUBST_SINGLE 1u
138 #define OT_LOOKUP_TYPE_SUBST_LIGATURE 4u
139
140 #define OT_SUBLOOKUP_SINGLE_SUBST_FORMAT2(Name, FromGlyphs, ToGlyphs) \
141 OT_SUBLOOKUP(Name, 2, \
142 OT_OFFSET(Name, Name##Coverage) \
143 OT_LABEL_END \
144 OT_UARRAY(Name##Substitute, OT_LIST(ToGlyphs)) \
145 ) \
146 OT_COVERAGE1(Name##Coverage, OT_LIST(FromGlyphs)) \
147 /* static_assert_expr (len(FromGlyphs) == len(ToGlyphs)) */
148
149 #define OT_SUBLOOKUP_LIGATURE_SUBST_FORMAT1(Name, FirstGlyphs, LigatureSetOffsets) \
150 OT_SUBLOOKUP(Name, 1, \
151 OT_OFFSET(Name, Name##Coverage) \
152 OT_LABEL_END \
153 OT_UARRAY(Name##LigatureSetOffsetsArray, OT_LIST(LigatureSetOffsets)) \
154 ) \
155 OT_COVERAGE1(Name##Coverage, OT_LIST(FirstGlyphs)) \
156 /* static_assert_expr (len(FirstGlyphs) == len(LigatureSetOffsets)) */
157
158 #define OT_LIGATURE_SET(Name, LigatureSetOffsets) \
159 OT_UARRAY(Name, OT_LIST(LigatureSetOffsets))
160
161 #define OT_LIGATURE(Name, Components, LigGlyph) \
162 OT_LABEL_START(Name) \
163 LigGlyph \
164 OT_LABEL_END \
165 OT_UHEADLESSARRAY(Name##ComponentsArray, OT_LIST(Components))
166
167 /*
168 *
169 * Start of Windows-1256 shaping table.
170 *
171 */
172
173 /* Table name. */
174 #define TABLE_NAME arabic_win1256_gsub_lookups
175
176 /* Table manifest. */
177 #define MANIFEST(Items) \
178 OT_LABEL_START(manifest) \
179 OT_UINT16(OT_COUNT(manifestData, 6)) \
180 OT_LABEL(manifestData) \
181 Items \
182 OT_LABEL_END
183
184 #define MANIFEST_LOOKUP(Tag, Name) \
185 Tag \
186 OT_OFFSET(manifest, Name)
187
188
189 /*
190 * Table Start
191 */
192 OT_TABLE_START
193
194
195 /*
196 * Manifest
197 */
198 MANIFEST(
199 MANIFEST_LOOKUP(OT_TAG('r','l','i','g'), rligLookup)
200 MANIFEST_LOOKUP(OT_TAG('i','n','i','t'), initLookup)
201 MANIFEST_LOOKUP(OT_TAG('m','e','d','i'), mediLookup)
202 MANIFEST_LOOKUP(OT_TAG('f','i','n','a'), finaLookup)
203 MANIFEST_LOOKUP(OT_TAG('r','l','i','g'), rligMarksLookup)
204 )
205
206 /*
207 * Lookups
208 */
209 OT_LOOKUP(initLookup, OT_LOOKUP_TYPE_SUBST_SINGLE, OT_LOOKUP_FLAG_IGNORE_MARKS,
210 OT_OFFSET(initLookup, initmediSubLookup)
211 OT_OFFSET(initLookup, initSubLookup)
212 )
213 OT_LOOKUP(mediLookup, OT_LOOKUP_TYPE_SUBST_SINGLE, OT_LOOKUP_FLAG_IGNORE_MARKS,
214 OT_OFFSET(mediLookup, initmediSubLookup)
215 OT_OFFSET(mediLookup, mediSubLookup)
216 OT_OFFSET(mediLookup, medifinaLamAlefSubLookup)
217 )
218 OT_LOOKUP(finaLookup, OT_LOOKUP_TYPE_SUBST_SINGLE, OT_LOOKUP_FLAG_IGNORE_MARKS,
219 OT_OFFSET(finaLookup, finaSubLookup)
220 /* We don't need this one currently as the sequence inherits masks
221 * from the first item. Just in case we change that in the future
222 * to be smart about Arabic masks when ligating... */
223 OT_OFFSET(finaLookup, medifinaLamAlefSubLookup)
224 )
225 OT_LOOKUP(rligLookup, OT_LOOKUP_TYPE_SUBST_LIGATURE, OT_LOOKUP_FLAG_IGNORE_MARKS,
226 OT_OFFSET(rligLookup, lamAlefLigaturesSubLookup)
227 )
228 OT_LOOKUP(rligMarksLookup, OT_LOOKUP_TYPE_SUBST_LIGATURE, 0,
229 OT_OFFSET(rligMarksLookup, shaddaLigaturesSubLookup)
230 )
231
232 /*
233 * init/medi/fina forms
234 */
235 OT_SUBLOOKUP_SINGLE_SUBST_FORMAT2(initmediSubLookup,
236 G(198) G(200) G(201) G(202) G(203) G(204) G(205) G(206) G(211)
237 G(212) G(213) G(214) G(223) G(225) G(227) G(228) G(236) G(237),
238 G(162) G(4) G(5) G(5) G(6) G(7) G(9) G(11) G(13)
239 G(14) G(15) G(26) G(140) G(141) G(142) G(143) G(154) G(154)
240 )
241 OT_SUBLOOKUP_SINGLE_SUBST_FORMAT2(initSubLookup,
242 G(218) G(219) G(221) G(222) G(229),
243 G(27) G(30) G(128) G(131) G(144)
244 )
245 OT_SUBLOOKUP_SINGLE_SUBST_FORMAT2(mediSubLookup,
246 G(218) G(219) G(221) G(222) G(229),
247 G(28) G(31) G(129) G(138) G(149)
248 )
249 OT_SUBLOOKUP_SINGLE_SUBST_FORMAT2(finaSubLookup,
250 G(194) G(195) G(197) G(198) G(199) G(201) G(204) G(205) G(206)
251 G(218) G(219) G(229) G(236) G(237),
252 G(2) G(1) G(3) G(181) G(0) G(159) G(8) G(10) G(12)
253 G(29) G(127) G(152) G(160) G(156)
254 )
255 OT_SUBLOOKUP_SINGLE_SUBST_FORMAT2(medifinaLamAlefSubLookup,
256 G(165) G(178) G(180) G(252),
257 G(170) G(179) G(185) G(255)
258 )
259
260 /*
261 * Lam+Alef ligatures
262 */
263 OT_SUBLOOKUP_LIGATURE_SUBST_FORMAT1(lamAlefLigaturesSubLookup,
264 G(225),
265 OT_OFFSET(lamAlefLigaturesSubLookup, lamLigatureSet)
266 )
267 OT_LIGATURE_SET(lamLigatureSet,
268 OT_OFFSET(lamLigatureSet, lamInitLigature1)
269 OT_OFFSET(lamLigatureSet, lamInitLigature2)
270 OT_OFFSET(lamLigatureSet, lamInitLigature3)
271 OT_OFFSET(lamLigatureSet, lamInitLigature4)
272 )
273 OT_LIGATURE(lamInitLigature1, G(199), G(165))
274 OT_LIGATURE(lamInitLigature2, G(195), G(178))
275 OT_LIGATURE(lamInitLigature3, G(194), G(180))
276 OT_LIGATURE(lamInitLigature4, G(197), G(252))
277
278 /*
279 * Shadda ligatures
280 */
281 OT_SUBLOOKUP_LIGATURE_SUBST_FORMAT1(shaddaLigaturesSubLookup,
282 G(248),
283 OT_OFFSET(shaddaLigaturesSubLookup, shaddaLigatureSet)
284 )
285 OT_LIGATURE_SET(shaddaLigatureSet,
286 OT_OFFSET(shaddaLigatureSet, shaddaLigature1)
287 OT_OFFSET(shaddaLigatureSet, shaddaLigature2)
288 OT_OFFSET(shaddaLigatureSet, shaddaLigature3)
289 )
290 OT_LIGATURE(shaddaLigature1, G(243), G(172))
291 OT_LIGATURE(shaddaLigature2, G(245), G(173))
292 OT_LIGATURE(shaddaLigature3, G(246), G(175))
293
294 /*
295 * Table end
296 */
297 OT_TABLE_END
298
299
300 /*
301 * Clean up
302 */
303
304 #undef MANIFEST
305 #undef MANIFEST_LOOKUP
306
307 #undef OT_TABLE_START
308 #undef OT_TABLE_END
309 #undef OT_LABEL_START
310 #undef OT_LABEL_END
311 #undef OT_UINT8
312 #undef OT_UINT16
313 #undef OT_COUNT
314 #undef OT_DISTANCE
315
316 #undef OT_LABEL
317 #undef OT_LIST
318
319 #undef OT_TAG
320 #undef OT_OFFSET
321 #undef OT_GLYPHID
322 #undef G
323 #undef OT_UARRAY
324 #undef OT_UHEADLESSARRAY
325
326 #undef OT_LOOKUP_FLAG_IGNORE_MARKS
327 #undef OT_LOOKUP
328 #undef OT_SUBLOOKUP
329 #undef OT_COVERAGE1
330 #undef OT_LOOKUP_TYPE_SUBST_SINGLE
331 #undef OT_LOOKUP_TYPE_SUBST_LIGATURE
332 #undef OT_SUBLOOKUP_SINGLE_SUBST_FORMAT2
333 #undef OT_SUBLOOKUP_LIGATURE_SUBST_FORMAT1
334 #undef OT_LIGATURE_SET
335 #undef OT_LIGATURE
336
337
338 /*
339 * Include a second time to get the table data...
340 */
341 #if 0
342 #include "hb.hh" /* Make check-includes.sh happy. */
343 #endif
344 #ifdef OT_MEASURE
345 #include "hb-ot-shaper-arabic-win1256.hh"
346 #endif
347
348 #define HB_OT_SHAPER_ARABIC_WIN1256_HH
349 #endif /* HB_OT_SHAPER_ARABIC_WIN1256_HH */