1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
|
/*
* Copyright © 2018 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_MYANMAR_HH
#define HB_OT_SHAPE_COMPLEX_MYANMAR_HH
#include "hb.hh"
#include "hb-ot-shape-complex-indic.hh"
/* buffer var allocations */
#define myanmar_category() indic_category() /* myanmar_category_t */
#define myanmar_position() indic_position() /* myanmar_position_t */
/* Note: This enum is duplicated in the -machine.rl source file.
* Not sure how to avoid duplication. */
enum myanmar_category_t {
OT_As = 18, /* Asat */
OT_D0 = 20, /* Digit zero */
OT_DB = OT_N, /* Dot below */
OT_GB = OT_PLACEHOLDER,
OT_MH = 21, /* Various consonant medial types */
OT_MR = 22, /* Various consonant medial types */
OT_MW = 23, /* Various consonant medial types */
OT_MY = 24, /* Various consonant medial types */
OT_PT = 25, /* Pwo and other tones */
//OT_VAbv = 26,
//OT_VBlw = 27,
//OT_VPre = 28,
//OT_VPst = 29,
OT_VS = 30, /* Variation selectors */
OT_P = 31, /* Punctuation */
OT_D = 32, /* Digits except zero */
};
static inline void
set_myanmar_properties (hb_glyph_info_t &info)
{
hb_codepoint_t u = info.codepoint;
unsigned int type = hb_indic_get_categories (u);
unsigned int cat = type & 0xFFu;
indic_position_t pos = (indic_position_t) (type >> 8);
/* Myanmar
* https://docs.microsoft.com/en-us/typography/script-development/myanmar#analyze
*/
if (unlikely (hb_in_range<hb_codepoint_t> (u, 0xFE00u, 0xFE0Fu)))
cat = OT_VS;
switch (u)
{
case 0x104Eu:
cat = OT_C; /* The spec says C, IndicSyllableCategory doesn't have. */
break;
case 0x002Du: case 0x00A0u: case 0x00D7u: case 0x2012u:
case 0x2013u: case 0x2014u: case 0x2015u: case 0x2022u:
case 0x25CCu: case 0x25FBu: case 0x25FCu: case 0x25FDu:
case 0x25FEu:
cat = OT_GB;
break;
case 0x1004u: case 0x101Bu: case 0x105Au:
cat = OT_Ra;
break;
case 0x1032u: case 0x1036u:
cat = OT_A;
break;
case 0x1039u:
cat = OT_H;
break;
case 0x103Au:
cat = OT_As;
break;
case 0x1041u: case 0x1042u: case 0x1043u: case 0x1044u:
case 0x1045u: case 0x1046u: case 0x1047u: case 0x1048u:
case 0x1049u: case 0x1090u: case 0x1091u: case 0x1092u:
case 0x1093u: case 0x1094u: case 0x1095u: case 0x1096u:
case 0x1097u: case 0x1098u: case 0x1099u:
cat = OT_D;
break;
case 0x1040u:
cat = OT_D; /* XXX The spec says D0, but Uniscribe doesn't seem to do. */
break;
case 0x103Eu: case 0x1060u:
cat = OT_MH;
break;
case 0x103Cu:
cat = OT_MR;
break;
case 0x103Du: case 0x1082u:
cat = OT_MW;
break;
case 0x103Bu: case 0x105Eu: case 0x105Fu:
cat = OT_MY;
break;
case 0x1063u: case 0x1064u: case 0x1069u: case 0x106Au:
case 0x106Bu: case 0x106Cu: case 0x106Du: case 0xAA7Bu:
cat = OT_PT;
break;
case 0x1038u: case 0x1087u: case 0x1088u: case 0x1089u:
case 0x108Au: case 0x108Bu: case 0x108Cu: case 0x108Du:
case 0x108Fu: case 0x109Au: case 0x109Bu: case 0x109Cu:
cat = OT_SM;
break;
case 0x104Au: case 0x104Bu:
cat = OT_P;
break;
case 0xAA74u: case 0xAA75u: case 0xAA76u:
/* https://github.com/harfbuzz/harfbuzz/issues/218 */
cat = OT_C;
break;
}
if (cat == OT_M)
{
switch ((int) pos)
{
case POS_PRE_C: cat = (myanmar_category_t) OT_VPre;
pos = POS_PRE_M; break;
case POS_ABOVE_C: cat = (myanmar_category_t) OT_VAbv; break;
case POS_BELOW_C: cat = (myanmar_category_t) OT_VBlw; break;
case POS_POST_C: cat = (myanmar_category_t) OT_VPst; break;
}
}
info.myanmar_category() = cat;
info.myanmar_position() = pos;
}
#endif /* HB_OT_SHAPE_COMPLEX_MYANMAR_HH */
|
