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
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
|
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2009 Phinitnun Chanasabaeng
* Initial work
* Copyright (C) 2009 Tomer Shalev
* Copyright (C) 2018 William Wilgus
*
* Rockbox diacritic positioning
* Based on initial work by Phinitnun Chanasabaeng
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "diacritic.h"
#include "system.h"
#define DIAC_NUM_RANGES (ARRAYLEN(diac_ranges))
#define DIAC_RTL (1 << 7)
#define DIAC_CNT (0xFF ^ DIAC_RTL)
/* Each diac_range_ struct defines a Unicode range that begins with
* N diacritic characters, and continues with non-diacritic characters up to the
* base of the next item in the array, [info] packs RTL status and the count of
* diacritic chars after [base]. RTL occupies the MSB and CNT the (7) lower bits
*/
struct diac_range
{
uint16_t base;
uint8_t info; /* [RTL:1 CNT:7] */
};
#define DIAC_RANGE_ENTRY(first_diac, first_non_diac, is_rtl) \
{ first_diac, ((first_non_diac - first_diac) & DIAC_CNT) | (is_rtl * DIAC_RTL)}
/* Sorted by Unicode value */
static const struct diac_range diac_ranges[] =
{
DIAC_RANGE_ENTRY(0x0000, 0x0000, 0),
DIAC_RANGE_ENTRY(0x0300, 0x0370, 0),
DIAC_RANGE_ENTRY(0x0483, 0x048a, 0),
DIAC_RANGE_ENTRY(0x0591, 0x05be, 1),
DIAC_RANGE_ENTRY(0x05bf, 0x05c0, 1),
DIAC_RANGE_ENTRY(0x05c1, 0x05c3, 1),
DIAC_RANGE_ENTRY(0x05c4, 0x05c6, 1),
DIAC_RANGE_ENTRY(0x05c7, 0x05c8, 1),
DIAC_RANGE_ENTRY(0x0610, 0x061b, 1),
DIAC_RANGE_ENTRY(0x064b, 0x065f, 1),
DIAC_RANGE_ENTRY(0x0670, 0x0671, 1),
DIAC_RANGE_ENTRY(0x06d6, 0x06dd, 1),
DIAC_RANGE_ENTRY(0x06df, 0x06e5, 1),
DIAC_RANGE_ENTRY(0x06e7, 0x06e9, 1),
DIAC_RANGE_ENTRY(0x06ea, 0x06ee, 1),
DIAC_RANGE_ENTRY(0x0711, 0x0712, 1),
DIAC_RANGE_ENTRY(0x0730, 0x074b, 1),
DIAC_RANGE_ENTRY(0x07a6, 0x07b1, 1),
DIAC_RANGE_ENTRY(0x07bf, 0x07c0, 0),
DIAC_RANGE_ENTRY(0x07eb, 0x07f4, 0),
DIAC_RANGE_ENTRY(0x0816, 0x081a, 0),
DIAC_RANGE_ENTRY(0x081b, 0x0824, 0),
DIAC_RANGE_ENTRY(0x0825, 0x0828, 0),
DIAC_RANGE_ENTRY(0x0829, 0x082e, 0),
DIAC_RANGE_ENTRY(0x0900, 0x0904, 0),
DIAC_RANGE_ENTRY(0x093c, 0x093d, 0),
DIAC_RANGE_ENTRY(0x093e, 0x094f, 0),
DIAC_RANGE_ENTRY(0x0951, 0x0956, 0),
DIAC_RANGE_ENTRY(0x0962, 0x0964, 0),
DIAC_RANGE_ENTRY(0x0981, 0x0984, 0),
DIAC_RANGE_ENTRY(0x09bc, 0x09bd, 0),
DIAC_RANGE_ENTRY(0x09be, 0x09ce, 0),
DIAC_RANGE_ENTRY(0x09d7, 0x09d8, 0),
DIAC_RANGE_ENTRY(0x09e2, 0x09e4, 0),
DIAC_RANGE_ENTRY(0x0a01, 0x0a04, 0),
DIAC_RANGE_ENTRY(0x0a3c, 0x0a52, 0),
DIAC_RANGE_ENTRY(0x0a70, 0x0a72, 0),
DIAC_RANGE_ENTRY(0x0a75, 0x0a76, 0),
DIAC_RANGE_ENTRY(0x0a81, 0x0a84, 0),
DIAC_RANGE_ENTRY(0x0abc, 0x0abd, 0),
DIAC_RANGE_ENTRY(0x0abe, 0x0ace, 0),
DIAC_RANGE_ENTRY(0x0ae2, 0x0ae4, 0),
DIAC_RANGE_ENTRY(0x0b01, 0x0b04, 0),
DIAC_RANGE_ENTRY(0x0b3c, 0x0b3d, 0),
DIAC_RANGE_ENTRY(0x0b3e, 0x0b58, 0),
DIAC_RANGE_ENTRY(0x0b82, 0x0b83, 0),
DIAC_RANGE_ENTRY(0x0bbe, 0x0bce, 0),
DIAC_RANGE_ENTRY(0x0bd7, 0x0bd8, 0),
DIAC_RANGE_ENTRY(0x0c01, 0x0c04, 0),
DIAC_RANGE_ENTRY(0x0c3e, 0x0c57, 0),
DIAC_RANGE_ENTRY(0x0c62, 0x0c64, 0),
DIAC_RANGE_ENTRY(0x0c82, 0x0c84, 0),
DIAC_RANGE_ENTRY(0x0cbc, 0x0cbd, 0),
DIAC_RANGE_ENTRY(0x0cbe, 0x0cd7, 0),
DIAC_RANGE_ENTRY(0x0ce2, 0x0ce4, 0),
DIAC_RANGE_ENTRY(0x0d02, 0x0d04, 0),
DIAC_RANGE_ENTRY(0x0d3e, 0x0d58, 0),
DIAC_RANGE_ENTRY(0x0d62, 0x0d64, 0),
DIAC_RANGE_ENTRY(0x0d82, 0x0d84, 0),
DIAC_RANGE_ENTRY(0x0dca, 0x0df4, 0),
DIAC_RANGE_ENTRY(0x0e31, 0x0e32, 0),
DIAC_RANGE_ENTRY(0x0e34, 0x0e3b, 0),
DIAC_RANGE_ENTRY(0x0e47, 0x0e4f, 0),
DIAC_RANGE_ENTRY(0x0eb1, 0x0eb2, 0),
DIAC_RANGE_ENTRY(0x0eb4, 0x0ebd, 0),
DIAC_RANGE_ENTRY(0x0ec8, 0x0ece, 0),
DIAC_RANGE_ENTRY(0x0f18, 0x0f1a, 0),
DIAC_RANGE_ENTRY(0x0f35, 0x0f36, 0),
DIAC_RANGE_ENTRY(0x0f37, 0x0f38, 0),
DIAC_RANGE_ENTRY(0x0f39, 0x0f3a, 0),
DIAC_RANGE_ENTRY(0x0f3e, 0x0f40, 0),
DIAC_RANGE_ENTRY(0x0f71, 0x0f85, 0),
DIAC_RANGE_ENTRY(0x0f86, 0x0f88, 0),
DIAC_RANGE_ENTRY(0x0f90, 0x0fbd, 0),
DIAC_RANGE_ENTRY(0x102b, 0x103f, 0),
DIAC_RANGE_ENTRY(0x1056, 0x105a, 0),
DIAC_RANGE_ENTRY(0x105e, 0x1061, 0),
DIAC_RANGE_ENTRY(0x1062, 0x1065, 0),
DIAC_RANGE_ENTRY(0x1067, 0x106e, 0),
DIAC_RANGE_ENTRY(0x1071, 0x1075, 0),
DIAC_RANGE_ENTRY(0x1082, 0x108e, 0),
DIAC_RANGE_ENTRY(0x108f, 0x1090, 0),
DIAC_RANGE_ENTRY(0x109a, 0x109e, 0),
DIAC_RANGE_ENTRY(0x135f, 0x1360, 0),
DIAC_RANGE_ENTRY(0x1712, 0x1715, 0),
DIAC_RANGE_ENTRY(0x1732, 0x1735, 0),
DIAC_RANGE_ENTRY(0x1752, 0x1754, 0),
DIAC_RANGE_ENTRY(0x1772, 0x1774, 0),
DIAC_RANGE_ENTRY(0x17b6, 0x17d4, 0),
DIAC_RANGE_ENTRY(0x17dd, 0x17de, 0),
DIAC_RANGE_ENTRY(0x18a9, 0x18aa, 0),
DIAC_RANGE_ENTRY(0x1920, 0x193c, 0),
DIAC_RANGE_ENTRY(0x19b0, 0x19c1, 0),
DIAC_RANGE_ENTRY(0x19c8, 0x19ca, 0),
DIAC_RANGE_ENTRY(0x1a17, 0x1a1c, 0),
DIAC_RANGE_ENTRY(0x1a55, 0x1a80, 0),
DIAC_RANGE_ENTRY(0x1b00, 0x1b05, 0),
DIAC_RANGE_ENTRY(0x1b34, 0x1b45, 0),
DIAC_RANGE_ENTRY(0x1b6b, 0x1b74, 0),
DIAC_RANGE_ENTRY(0x1b80, 0x1b83, 0),
DIAC_RANGE_ENTRY(0x1ba1, 0x1bab, 0),
DIAC_RANGE_ENTRY(0x1c24, 0x1c38, 0),
DIAC_RANGE_ENTRY(0x1cd0, 0x1cd3, 0),
DIAC_RANGE_ENTRY(0x1cd4, 0x1ce9, 0),
DIAC_RANGE_ENTRY(0x1ced, 0x1cee, 0),
DIAC_RANGE_ENTRY(0x1cf2, 0x1cf3, 0),
DIAC_RANGE_ENTRY(0x1dc0, 0x1e00, 0),
DIAC_RANGE_ENTRY(0x20d0, 0x20f1, 0),
DIAC_RANGE_ENTRY(0x2cef, 0x2cf2, 0),
DIAC_RANGE_ENTRY(0x2de0, 0x2e00, 0),
DIAC_RANGE_ENTRY(0x302a, 0x3030, 0),
DIAC_RANGE_ENTRY(0x3099, 0x309b, 0),
DIAC_RANGE_ENTRY(0xa66f, 0xa673, 0),
DIAC_RANGE_ENTRY(0xa67c, 0xa67e, 0),
DIAC_RANGE_ENTRY(0xa6f0, 0xa6f2, 0),
DIAC_RANGE_ENTRY(0xa802, 0xa803, 0),
DIAC_RANGE_ENTRY(0xa806, 0xa807, 0),
DIAC_RANGE_ENTRY(0xa80b, 0xa80c, 0),
DIAC_RANGE_ENTRY(0xa823, 0xa828, 0),
DIAC_RANGE_ENTRY(0xa880, 0xa882, 0),
DIAC_RANGE_ENTRY(0xa8b4, 0xa8c5, 0),
DIAC_RANGE_ENTRY(0xa8e0, 0xa8f2, 0),
DIAC_RANGE_ENTRY(0xa926, 0xa92e, 0),
DIAC_RANGE_ENTRY(0xa947, 0xa954, 0),
DIAC_RANGE_ENTRY(0xa980, 0xa984, 0),
DIAC_RANGE_ENTRY(0xa9b3, 0xa9c1, 0),
DIAC_RANGE_ENTRY(0xaa29, 0xaa37, 0),
DIAC_RANGE_ENTRY(0xaa43, 0xaa44, 0),
DIAC_RANGE_ENTRY(0xaa4c, 0xaa4e, 0),
DIAC_RANGE_ENTRY(0xaa7b, 0xaa7c, 0),
DIAC_RANGE_ENTRY(0xaab0, 0xaab1, 0),
DIAC_RANGE_ENTRY(0xaab2, 0xaab5, 0),
DIAC_RANGE_ENTRY(0xaab7, 0xaab9, 0),
DIAC_RANGE_ENTRY(0xaabe, 0xaac0, 0),
DIAC_RANGE_ENTRY(0xaac1, 0xaac2, 0),
DIAC_RANGE_ENTRY(0xabe3, 0xabeb, 0),
DIAC_RANGE_ENTRY(0xabec, 0xabee, 0),
DIAC_RANGE_ENTRY(0xfb1e, 0xfb1f, 0),
DIAC_RANGE_ENTRY(0xfe20, 0xfe27, 0),
DIAC_RANGE_ENTRY(0xfe70, 0xfe70, 1),
DIAC_RANGE_ENTRY(0xff00, 0xff00, 0),
DIAC_RANGE_ENTRY(0xffff, 0xffff, 0),
};
#define MRU_MAX_LEN 32
#ifndef BOOTLOADER
bool is_diacritic(const unsigned short char_code, bool *is_rtl)
{
static uint8_t mru_len = 0;
static uint8_t diacritic_mru[MRU_MAX_LEN];
uint8_t i, itmp;
uint8_t info, mru;
const struct diac_range *diac;
/* Search in MRU */
for (mru = 0, i = 0; mru < mru_len; mru++)
{
/* Items shifted >> 1 */
itmp = i;
i = diacritic_mru[mru];
diacritic_mru[mru] = itmp;
/* Found in MRU */
if ((char_code >= (diac = &diac_ranges[i])->base)
&& (char_code < (++diac)->base))
{
goto Found;
}
}
/* Search in DB */
for (i = 0; i < DIAC_NUM_RANGES - 1; i++)
{
/* Found */
if (char_code < diac_ranges[i + 1].base)
break;
}
/* Add MRU entry */
if (mru_len < MRU_MAX_LEN)
mru_len++;
Found:
/* Promote MRU item to top of MRU */
diacritic_mru[0] = i;
diac = &diac_ranges[i];
info = diac->info;
/* Update RTL */
if (is_rtl)
*is_rtl = ((DIAC_RTL & info) == DIAC_RTL);
return (char_code < diac->base + (info & DIAC_CNT));
}
#else /*BOOTLOADER*/
inline bool is_diacritic(const unsigned short char_code, bool *is_rtl)
{
(void)char_code;
if (is_rtl)
*is_rtl = false;
return false;
}
#endif /* ndef BOOTLOADER*/
|
