/src/skia/third_party/externals/harfbuzz/src/hb-ot-shape-complex-myanmar.hh
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1 | | /* |
2 | | * Copyright © 2018 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_SHAPE_COMPLEX_MYANMAR_HH |
28 | | #define HB_OT_SHAPE_COMPLEX_MYANMAR_HH |
29 | | |
30 | | #include "hb.hh" |
31 | | |
32 | | #include "hb-ot-shape-complex-indic.hh" |
33 | | |
34 | | |
35 | | /* buffer var allocations */ |
36 | 1.40M | #define myanmar_category() indic_category() /* myanmar_category_t */ |
37 | 550k | #define myanmar_position() indic_position() /* myanmar_position_t */ |
38 | | |
39 | | |
40 | | /* Note: This enum is duplicated in the -machine.rl source file. |
41 | | * Not sure how to avoid duplication. */ |
42 | | enum myanmar_category_t { |
43 | | OT_As = 18, /* Asat */ |
44 | | OT_D0 = 20, /* Digit zero */ |
45 | | OT_DB = OT_N, /* Dot below */ |
46 | | OT_GB = OT_PLACEHOLDER, |
47 | | OT_MH = 21, /* Various consonant medial types */ |
48 | | OT_MR = 22, /* Various consonant medial types */ |
49 | | OT_MW = 23, /* Various consonant medial types */ |
50 | | OT_MY = 24, /* Various consonant medial types */ |
51 | | OT_PT = 25, /* Pwo and other tones */ |
52 | | //OT_VAbv = 26, |
53 | | //OT_VBlw = 27, |
54 | | //OT_VPre = 28, |
55 | | //OT_VPst = 29, |
56 | | OT_VS = 30, /* Variation selectors */ |
57 | | OT_P = 31, /* Punctuation */ |
58 | | OT_D = 32, /* Digits except zero */ |
59 | | }; |
60 | | |
61 | | |
62 | | static inline void |
63 | | set_myanmar_properties (hb_glyph_info_t &info) |
64 | 385k | { |
65 | 385k | hb_codepoint_t u = info.codepoint; |
66 | 385k | unsigned int type = hb_indic_get_categories (u); |
67 | 385k | unsigned int cat = type & 0xFFu; |
68 | 385k | indic_position_t pos = (indic_position_t) (type >> 8); |
69 | | |
70 | | /* Myanmar |
71 | | * https://docs.microsoft.com/en-us/typography/script-development/myanmar#analyze |
72 | | */ |
73 | 385k | if (unlikely (hb_in_range<hb_codepoint_t> (u, 0xFE00u, 0xFE0Fu))) |
74 | 58 | cat = OT_VS; |
75 | | |
76 | 385k | switch (u) |
77 | 385k | { |
78 | 109 | case 0x104Eu: |
79 | 109 | cat = OT_C; /* The spec says C, IndicSyllableCategory doesn't have. */ |
80 | 109 | break; |
81 | | |
82 | 10.0k | case 0x002Du: case 0x00A0u: case 0x00D7u: case 0x2012u: |
83 | 10.1k | case 0x2013u: case 0x2014u: case 0x2015u: case 0x2022u: |
84 | 10.1k | case 0x25CCu: case 0x25FBu: case 0x25FCu: case 0x25FDu: |
85 | 10.1k | case 0x25FEu: |
86 | 10.1k | cat = OT_GB; |
87 | 10.1k | break; |
88 | | |
89 | 20 | case 0x1004u: case 0x101Bu: case 0x105Au: |
90 | 20 | cat = OT_Ra; |
91 | 20 | break; |
92 | | |
93 | 13 | case 0x1032u: case 0x1036u: |
94 | 13 | cat = OT_A; |
95 | 13 | break; |
96 | | |
97 | 31 | case 0x1039u: |
98 | 31 | cat = OT_H; |
99 | 31 | break; |
100 | | |
101 | 30 | case 0x103Au: |
102 | 30 | cat = OT_As; |
103 | 30 | break; |
104 | | |
105 | 1.08k | case 0x1041u: case 0x1042u: case 0x1043u: case 0x1044u: |
106 | 1.90k | case 0x1045u: case 0x1046u: case 0x1047u: case 0x1048u: |
107 | 2.77k | case 0x1049u: case 0x1090u: case 0x1091u: case 0x1092u: |
108 | 3.32k | case 0x1093u: case 0x1094u: case 0x1095u: case 0x1096u: |
109 | 4.26k | case 0x1097u: case 0x1098u: case 0x1099u: |
110 | 4.26k | cat = OT_D; |
111 | 4.26k | break; |
112 | | |
113 | 140 | case 0x1040u: |
114 | 140 | cat = OT_D; /* XXX The spec says D0, but Uniscribe doesn't seem to do. */ |
115 | 140 | break; |
116 | | |
117 | 412 | case 0x103Eu: case 0x1060u: |
118 | 412 | cat = OT_MH; |
119 | 412 | break; |
120 | | |
121 | 36 | case 0x103Cu: |
122 | 36 | cat = OT_MR; |
123 | 36 | break; |
124 | | |
125 | 577 | case 0x103Du: case 0x1082u: |
126 | 577 | cat = OT_MW; |
127 | 577 | break; |
128 | | |
129 | 187 | case 0x103Bu: case 0x105Eu: case 0x105Fu: |
130 | 187 | cat = OT_MY; |
131 | 187 | break; |
132 | | |
133 | 538 | case 0x1063u: case 0x1064u: case 0x1069u: case 0x106Au: |
134 | 1.10k | case 0x106Bu: case 0x106Cu: case 0x106Du: case 0xAA7Bu: |
135 | 1.10k | cat = OT_PT; |
136 | 1.10k | break; |
137 | | |
138 | 4.05k | case 0x1038u: case 0x1087u: case 0x1088u: case 0x1089u: |
139 | 4.70k | case 0x108Au: case 0x108Bu: case 0x108Cu: case 0x108Du: |
140 | 5.77k | case 0x108Fu: case 0x109Au: case 0x109Bu: case 0x109Cu: |
141 | 5.77k | cat = OT_SM; |
142 | 5.77k | break; |
143 | | |
144 | 401 | case 0x104Au: case 0x104Bu: |
145 | 401 | cat = OT_P; |
146 | 401 | break; |
147 | | |
148 | 274 | case 0xAA74u: case 0xAA75u: case 0xAA76u: |
149 | | /* https://github.com/harfbuzz/harfbuzz/issues/218 */ |
150 | 274 | cat = OT_C; |
151 | 274 | break; |
152 | 385k | } |
153 | | |
154 | 385k | if (cat == OT_M) |
155 | 2.69k | { |
156 | 2.69k | switch ((int) pos) |
157 | 2.69k | { |
158 | 25 | case POS_PRE_C: cat = (myanmar_category_t) OT_VPre; |
159 | 25 | pos = POS_PRE_M; break; |
160 | 0 | case POS_ABOVE_C: cat = (myanmar_category_t) OT_VAbv; break; |
161 | 26 | case POS_BELOW_C: cat = (myanmar_category_t) OT_VBlw; break; |
162 | 2.64k | case POS_POST_C: cat = (myanmar_category_t) OT_VPst; break; |
163 | 385k | } |
164 | 385k | } |
165 | | |
166 | 385k | info.myanmar_category() = cat; |
167 | 385k | info.myanmar_position() = pos; |
168 | 385k | } |
169 | | |
170 | | |
171 | | #endif /* HB_OT_SHAPE_COMPLEX_MYANMAR_HH */ |