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author | Tomer Shalev <shalev.tomer@gmail.com> | 2010-04-07 20:41:18 +0000 |
---|---|---|
committer | Tomer Shalev <shalev.tomer@gmail.com> | 2010-04-07 20:41:18 +0000 |
commit | 56058c7213f281c61601f12cc0cdbcbf3b425a08 (patch) | |
tree | 6937891a9f05318374962cb52b78977358681386 /firmware/common | |
parent | 62321ed0bd7d8d5879a9caad3d8f642dbe876033 (diff) | |
download | rockbox-56058c7213f281c61601f12cc0cdbcbf3b425a08.tar.gz rockbox-56058c7213f281c61601f12cc0cdbcbf3b425a08.zip |
FS#11187 - diacritic.c is in 'drivers' but it does not belong there
- Move diacritic.c to firmware/common
- The function is_diacritic returns bool now
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25526 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/common')
-rw-r--r-- | firmware/common/diacritic.c | 241 |
1 files changed, 241 insertions, 0 deletions
diff --git a/firmware/common/diacritic.c b/firmware/common/diacritic.c new file mode 100644 index 0000000000..aa2726c5fb --- /dev/null +++ b/firmware/common/diacritic.c | |||
@@ -0,0 +1,241 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2009 Phinitnun Chanasabaeng | ||
11 | * Initial work | ||
12 | * Copyright (C) 2009 Tomer Shalev | ||
13 | * | ||
14 | * Rockbox diacritic positioning | ||
15 | * Based on initial work by Phinitnun Chanasabaeng | ||
16 | * | ||
17 | * This program is free software; you can redistribute it and/or | ||
18 | * modify it under the terms of the GNU General Public License | ||
19 | * as published by the Free Software Foundation; either version 2 | ||
20 | * of the License, or (at your option) any later version. | ||
21 | * | ||
22 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
23 | * KIND, either express or implied. | ||
24 | * | ||
25 | ****************************************************************************/ | ||
26 | #include "diacritic.h" | ||
27 | #include "system.h" | ||
28 | |||
29 | #define DIAC_NUM_RANGES (ARRAYLEN(diac_ranges)) | ||
30 | |||
31 | /* Each diac_range_ struct defines a Unicode range that begins with | ||
32 | * N diacritic characters, and continues with non-diacritic characters up to the | ||
33 | * base of the next item in the array */ | ||
34 | struct diac_range | ||
35 | { | ||
36 | unsigned base : 16; | ||
37 | unsigned num_diacritics : 7; | ||
38 | unsigned is_rtl : 1; | ||
39 | }; | ||
40 | |||
41 | #define DIAC_RANGE_ENTRY(first_diac, first_non_diac, is_rtl) \ | ||
42 | { first_diac, first_non_diac - first_diac, is_rtl } | ||
43 | |||
44 | /* Sorted by Unicode value */ | ||
45 | static const struct diac_range diac_ranges[] = | ||
46 | { | ||
47 | DIAC_RANGE_ENTRY(0x0000, 0x0000, 0), | ||
48 | DIAC_RANGE_ENTRY(0x0300, 0x0370, 0), | ||
49 | DIAC_RANGE_ENTRY(0x0483, 0x048a, 0), | ||
50 | DIAC_RANGE_ENTRY(0x0591, 0x05be, 1), | ||
51 | DIAC_RANGE_ENTRY(0x05bf, 0x05c0, 1), | ||
52 | DIAC_RANGE_ENTRY(0x05c1, 0x05c3, 1), | ||
53 | DIAC_RANGE_ENTRY(0x05c4, 0x05c6, 1), | ||
54 | DIAC_RANGE_ENTRY(0x05c7, 0x05c8, 1), | ||
55 | DIAC_RANGE_ENTRY(0x0610, 0x061b, 1), | ||
56 | DIAC_RANGE_ENTRY(0x064b, 0x065f, 1), | ||
57 | DIAC_RANGE_ENTRY(0x0670, 0x0671, 1), | ||
58 | DIAC_RANGE_ENTRY(0x06d6, 0x06dd, 1), | ||
59 | DIAC_RANGE_ENTRY(0x06df, 0x06e5, 1), | ||
60 | DIAC_RANGE_ENTRY(0x06e7, 0x06e9, 1), | ||
61 | DIAC_RANGE_ENTRY(0x06ea, 0x06ee, 1), | ||
62 | DIAC_RANGE_ENTRY(0x0711, 0x0712, 1), | ||
63 | DIAC_RANGE_ENTRY(0x0730, 0x074b, 1), | ||
64 | DIAC_RANGE_ENTRY(0x07a6, 0x07b1, 1), | ||
65 | DIAC_RANGE_ENTRY(0x07bf, 0x07c0, 0), | ||
66 | DIAC_RANGE_ENTRY(0x07eb, 0x07f4, 0), | ||
67 | DIAC_RANGE_ENTRY(0x0816, 0x081a, 0), | ||
68 | DIAC_RANGE_ENTRY(0x081b, 0x0824, 0), | ||
69 | DIAC_RANGE_ENTRY(0x0825, 0x0828, 0), | ||
70 | DIAC_RANGE_ENTRY(0x0829, 0x082e, 0), | ||
71 | DIAC_RANGE_ENTRY(0x0900, 0x0904, 0), | ||
72 | DIAC_RANGE_ENTRY(0x093c, 0x093d, 0), | ||
73 | DIAC_RANGE_ENTRY(0x093e, 0x094f, 0), | ||
74 | DIAC_RANGE_ENTRY(0x0951, 0x0956, 0), | ||
75 | DIAC_RANGE_ENTRY(0x0962, 0x0964, 0), | ||
76 | DIAC_RANGE_ENTRY(0x0981, 0x0984, 0), | ||
77 | DIAC_RANGE_ENTRY(0x09bc, 0x09bd, 0), | ||
78 | DIAC_RANGE_ENTRY(0x09be, 0x09ce, 0), | ||
79 | DIAC_RANGE_ENTRY(0x09d7, 0x09d8, 0), | ||
80 | DIAC_RANGE_ENTRY(0x09e2, 0x09e4, 0), | ||
81 | DIAC_RANGE_ENTRY(0x0a01, 0x0a04, 0), | ||
82 | DIAC_RANGE_ENTRY(0x0a3c, 0x0a52, 0), | ||
83 | DIAC_RANGE_ENTRY(0x0a70, 0x0a72, 0), | ||
84 | DIAC_RANGE_ENTRY(0x0a75, 0x0a76, 0), | ||
85 | DIAC_RANGE_ENTRY(0x0a81, 0x0a84, 0), | ||
86 | DIAC_RANGE_ENTRY(0x0abc, 0x0abd, 0), | ||
87 | DIAC_RANGE_ENTRY(0x0abe, 0x0ace, 0), | ||
88 | DIAC_RANGE_ENTRY(0x0ae2, 0x0ae4, 0), | ||
89 | DIAC_RANGE_ENTRY(0x0b01, 0x0b04, 0), | ||
90 | DIAC_RANGE_ENTRY(0x0b3c, 0x0b3d, 0), | ||
91 | DIAC_RANGE_ENTRY(0x0b3e, 0x0b58, 0), | ||
92 | DIAC_RANGE_ENTRY(0x0b82, 0x0b83, 0), | ||
93 | DIAC_RANGE_ENTRY(0x0bbe, 0x0bce, 0), | ||
94 | DIAC_RANGE_ENTRY(0x0bd7, 0x0bd8, 0), | ||
95 | DIAC_RANGE_ENTRY(0x0c01, 0x0c04, 0), | ||
96 | DIAC_RANGE_ENTRY(0x0c3e, 0x0c57, 0), | ||
97 | DIAC_RANGE_ENTRY(0x0c62, 0x0c64, 0), | ||
98 | DIAC_RANGE_ENTRY(0x0c82, 0x0c84, 0), | ||
99 | DIAC_RANGE_ENTRY(0x0cbc, 0x0cbd, 0), | ||
100 | DIAC_RANGE_ENTRY(0x0cbe, 0x0cd7, 0), | ||
101 | DIAC_RANGE_ENTRY(0x0ce2, 0x0ce4, 0), | ||
102 | DIAC_RANGE_ENTRY(0x0d02, 0x0d04, 0), | ||
103 | DIAC_RANGE_ENTRY(0x0d3e, 0x0d58, 0), | ||
104 | DIAC_RANGE_ENTRY(0x0d62, 0x0d64, 0), | ||
105 | DIAC_RANGE_ENTRY(0x0d82, 0x0d84, 0), | ||
106 | DIAC_RANGE_ENTRY(0x0dca, 0x0df4, 0), | ||
107 | DIAC_RANGE_ENTRY(0x0e31, 0x0e32, 0), | ||
108 | DIAC_RANGE_ENTRY(0x0e34, 0x0e3b, 0), | ||
109 | DIAC_RANGE_ENTRY(0x0e47, 0x0e4f, 0), | ||
110 | DIAC_RANGE_ENTRY(0x0eb1, 0x0eb2, 0), | ||
111 | DIAC_RANGE_ENTRY(0x0eb4, 0x0ebd, 0), | ||
112 | DIAC_RANGE_ENTRY(0x0ec8, 0x0ece, 0), | ||
113 | DIAC_RANGE_ENTRY(0x0f18, 0x0f1a, 0), | ||
114 | DIAC_RANGE_ENTRY(0x0f35, 0x0f36, 0), | ||
115 | DIAC_RANGE_ENTRY(0x0f37, 0x0f38, 0), | ||
116 | DIAC_RANGE_ENTRY(0x0f39, 0x0f3a, 0), | ||
117 | DIAC_RANGE_ENTRY(0x0f3e, 0x0f40, 0), | ||
118 | DIAC_RANGE_ENTRY(0x0f71, 0x0f85, 0), | ||
119 | DIAC_RANGE_ENTRY(0x0f86, 0x0f88, 0), | ||
120 | DIAC_RANGE_ENTRY(0x0f90, 0x0fbd, 0), | ||
121 | DIAC_RANGE_ENTRY(0x102b, 0x103f, 0), | ||
122 | DIAC_RANGE_ENTRY(0x1056, 0x105a, 0), | ||
123 | DIAC_RANGE_ENTRY(0x105e, 0x1061, 0), | ||
124 | DIAC_RANGE_ENTRY(0x1062, 0x1065, 0), | ||
125 | DIAC_RANGE_ENTRY(0x1067, 0x106e, 0), | ||
126 | DIAC_RANGE_ENTRY(0x1071, 0x1075, 0), | ||
127 | DIAC_RANGE_ENTRY(0x1082, 0x108e, 0), | ||
128 | DIAC_RANGE_ENTRY(0x108f, 0x1090, 0), | ||
129 | DIAC_RANGE_ENTRY(0x109a, 0x109e, 0), | ||
130 | DIAC_RANGE_ENTRY(0x135f, 0x1360, 0), | ||
131 | DIAC_RANGE_ENTRY(0x1712, 0x1715, 0), | ||
132 | DIAC_RANGE_ENTRY(0x1732, 0x1735, 0), | ||
133 | DIAC_RANGE_ENTRY(0x1752, 0x1754, 0), | ||
134 | DIAC_RANGE_ENTRY(0x1772, 0x1774, 0), | ||
135 | DIAC_RANGE_ENTRY(0x17b6, 0x17d4, 0), | ||
136 | DIAC_RANGE_ENTRY(0x17dd, 0x17de, 0), | ||
137 | DIAC_RANGE_ENTRY(0x18a9, 0x18aa, 0), | ||
138 | DIAC_RANGE_ENTRY(0x1920, 0x193c, 0), | ||
139 | DIAC_RANGE_ENTRY(0x19b0, 0x19c1, 0), | ||
140 | DIAC_RANGE_ENTRY(0x19c8, 0x19ca, 0), | ||
141 | DIAC_RANGE_ENTRY(0x1a17, 0x1a1c, 0), | ||
142 | DIAC_RANGE_ENTRY(0x1a55, 0x1a80, 0), | ||
143 | DIAC_RANGE_ENTRY(0x1b00, 0x1b05, 0), | ||
144 | DIAC_RANGE_ENTRY(0x1b34, 0x1b45, 0), | ||
145 | DIAC_RANGE_ENTRY(0x1b6b, 0x1b74, 0), | ||
146 | DIAC_RANGE_ENTRY(0x1b80, 0x1b83, 0), | ||
147 | DIAC_RANGE_ENTRY(0x1ba1, 0x1bab, 0), | ||
148 | DIAC_RANGE_ENTRY(0x1c24, 0x1c38, 0), | ||
149 | DIAC_RANGE_ENTRY(0x1cd0, 0x1cd3, 0), | ||
150 | DIAC_RANGE_ENTRY(0x1cd4, 0x1ce9, 0), | ||
151 | DIAC_RANGE_ENTRY(0x1ced, 0x1cee, 0), | ||
152 | DIAC_RANGE_ENTRY(0x1cf2, 0x1cf3, 0), | ||
153 | DIAC_RANGE_ENTRY(0x1dc0, 0x1e00, 0), | ||
154 | DIAC_RANGE_ENTRY(0x20d0, 0x20f1, 0), | ||
155 | DIAC_RANGE_ENTRY(0x2cef, 0x2cf2, 0), | ||
156 | DIAC_RANGE_ENTRY(0x2de0, 0x2e00, 0), | ||
157 | DIAC_RANGE_ENTRY(0x302a, 0x3030, 0), | ||
158 | DIAC_RANGE_ENTRY(0x3099, 0x309b, 0), | ||
159 | DIAC_RANGE_ENTRY(0xa66f, 0xa673, 0), | ||
160 | DIAC_RANGE_ENTRY(0xa67c, 0xa67e, 0), | ||
161 | DIAC_RANGE_ENTRY(0xa6f0, 0xa6f2, 0), | ||
162 | DIAC_RANGE_ENTRY(0xa802, 0xa803, 0), | ||
163 | DIAC_RANGE_ENTRY(0xa806, 0xa807, 0), | ||
164 | DIAC_RANGE_ENTRY(0xa80b, 0xa80c, 0), | ||
165 | DIAC_RANGE_ENTRY(0xa823, 0xa828, 0), | ||
166 | DIAC_RANGE_ENTRY(0xa880, 0xa882, 0), | ||
167 | DIAC_RANGE_ENTRY(0xa8b4, 0xa8c5, 0), | ||
168 | DIAC_RANGE_ENTRY(0xa8e0, 0xa8f2, 0), | ||
169 | DIAC_RANGE_ENTRY(0xa926, 0xa92e, 0), | ||
170 | DIAC_RANGE_ENTRY(0xa947, 0xa954, 0), | ||
171 | DIAC_RANGE_ENTRY(0xa980, 0xa984, 0), | ||
172 | DIAC_RANGE_ENTRY(0xa9b3, 0xa9c1, 0), | ||
173 | DIAC_RANGE_ENTRY(0xaa29, 0xaa37, 0), | ||
174 | DIAC_RANGE_ENTRY(0xaa43, 0xaa44, 0), | ||
175 | DIAC_RANGE_ENTRY(0xaa4c, 0xaa4e, 0), | ||
176 | DIAC_RANGE_ENTRY(0xaa7b, 0xaa7c, 0), | ||
177 | DIAC_RANGE_ENTRY(0xaab0, 0xaab1, 0), | ||
178 | DIAC_RANGE_ENTRY(0xaab2, 0xaab5, 0), | ||
179 | DIAC_RANGE_ENTRY(0xaab7, 0xaab9, 0), | ||
180 | DIAC_RANGE_ENTRY(0xaabe, 0xaac0, 0), | ||
181 | DIAC_RANGE_ENTRY(0xaac1, 0xaac2, 0), | ||
182 | DIAC_RANGE_ENTRY(0xabe3, 0xabeb, 0), | ||
183 | DIAC_RANGE_ENTRY(0xabec, 0xabee, 0), | ||
184 | DIAC_RANGE_ENTRY(0xfb1e, 0xfb1f, 0), | ||
185 | DIAC_RANGE_ENTRY(0xfe20, 0xfe27, 0), | ||
186 | DIAC_RANGE_ENTRY(0xfe70, 0xfe70, 1), | ||
187 | DIAC_RANGE_ENTRY(0xff00, 0xff00, 0), | ||
188 | DIAC_RANGE_ENTRY(0xffff, 0xffff, 0), | ||
189 | }; | ||
190 | |||
191 | #define MRU_MAX_LEN 32 | ||
192 | |||
193 | static unsigned short mru_len = 0; | ||
194 | static unsigned short diacritic_mru[MRU_MAX_LEN]; | ||
195 | |||
196 | bool is_diacritic(const unsigned short char_code, bool *is_rtl) | ||
197 | { | ||
198 | unsigned short mru, i; | ||
199 | const struct diac_range *diac; | ||
200 | |||
201 | /* Search in MRU */ | ||
202 | for (mru = 0; mru < mru_len; mru++) | ||
203 | { | ||
204 | i = diacritic_mru[mru]; | ||
205 | |||
206 | /* Found in MRU */ | ||
207 | if (diac_ranges[i].base <= char_code && | ||
208 | char_code < diac_ranges[i + 1].base) | ||
209 | { | ||
210 | goto Found; | ||
211 | } | ||
212 | } | ||
213 | |||
214 | /* Search in DB */ | ||
215 | for (i = 0; i < DIAC_NUM_RANGES - 1; i++) | ||
216 | { | ||
217 | /* Found */ | ||
218 | if (char_code < diac_ranges[i + 1].base) | ||
219 | break; | ||
220 | } | ||
221 | |||
222 | /* Add MRU entry, or overwrite LRU if MRU array is full */ | ||
223 | if (mru_len < MRU_MAX_LEN) | ||
224 | mru_len++; | ||
225 | else | ||
226 | mru--; | ||
227 | |||
228 | Found: | ||
229 | /* Promote MRU item to top of MRU */ | ||
230 | for ( ; mru > 0; mru--) | ||
231 | diacritic_mru[mru] = diacritic_mru[mru - 1]; | ||
232 | diacritic_mru[0] = i; | ||
233 | |||
234 | diac = &diac_ranges[i]; | ||
235 | |||
236 | /* Update RTL */ | ||
237 | if (is_rtl) | ||
238 | *is_rtl = diac->is_rtl; | ||
239 | |||
240 | return (char_code < diac->base + diac->num_diacritics); | ||
241 | } | ||