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
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
|
/*
* Copyright (C) 2007 Apple Computer, Inc.
*
* Portions are Copyright (C) 1998 Netscape Communications Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Alternatively, the contents of this file may be used under the terms
* of either the Mozilla Public License Version 1.1, found at
* http://www.mozilla.org/MPL/ (the "MPL") or the GNU General Public
* License Version 2.0, found at http://www.fsf.org/copyleft/gpl.html
* (the "GPL"), in which case the provisions of the MPL or the GPL are
* applicable instead of those above. If you wish to allow use of your
* version of this file only under the terms of one of those two
* licenses (the MPL or the GPL) and not to allow others to use your
* version of this file under the LGPL, indicate your decision by
* deletingthe provisions above and replace them with the notice and
* other provisions required by the MPL or the GPL, as the case may be.
* If you do not delete the provisions above, a recipient may use your
* version of this file under any of the LGPL, the MPL or the GPL.
*/
#include "config.h"
#include "UnicodeRange.h"
namespace WebCore {
// This table depends on unicode range definitions.
// Each item's index must correspond to a unicode range value
// eg. x-cyrillic = LangGroupTable[cRangeCyrillic]
static const char* gUnicodeRangeToLangGroupTable[] =
{
"x-cyrillic",
"el",
"tr",
"he",
"ar",
"x-baltic",
"th",
"ko",
"ja",
"zh-CN",
"zh-TW",
"x-devanagari",
"x-tamil",
"x-armn",
"x-beng",
"x-cans",
"x-ethi",
"x-geor",
"x-gujr",
"x-guru",
"x-khmr",
"x-mlym"
};
/**********************************************************************
* Unicode subranges as defined in unicode 3.0
* x-western, x-central-euro, tr, x-baltic -> latin
* 0000 - 036f
* 1e00 - 1eff
* 2000 - 206f (general punctuation)
* 20a0 - 20cf (currency symbols)
* 2100 - 214f (letterlike symbols)
* 2150 - 218f (Number Forms)
* el -> greek
* 0370 - 03ff
* 1f00 - 1fff
* x-cyrillic -> cyrillic
* 0400 - 04ff
* he -> hebrew
* 0590 - 05ff
* ar -> arabic
* 0600 - 06ff
* fb50 - fdff (arabic presentation forms)
* fe70 - feff (arabic presentation forms b)
* th - thai
* 0e00 - 0e7f
* ko -> korean
* ac00 - d7af (hangul Syllables)
* 1100 - 11ff (jamo)
* 3130 - 318f (hangul compatibility jamo)
* ja
* 3040 - 309f (hiragana)
* 30a0 - 30ff (katakana)
* zh-CN
* zh-TW
*
* CJK
* 3100 - 312f (bopomofo)
* 31a0 - 31bf (bopomofo extended)
* 3000 - 303f (CJK Symbols and Punctuation)
* 2e80 - 2eff (CJK radicals supplement)
* 2f00 - 2fdf (Kangxi Radicals)
* 2ff0 - 2fff (Ideographic Description Characters)
* 3190 - 319f (kanbun)
* 3200 - 32ff (Enclosed CJK letters and Months)
* 3300 - 33ff (CJK compatibility)
* 3400 - 4dbf (CJK Unified Ideographs Extension A)
* 4e00 - 9faf (CJK Unified Ideographs)
* f900 - fa5f (CJK Compatibility Ideographs)
* fe30 - fe4f (CJK compatibility Forms)
* ff00 - ffef (halfwidth and fullwidth forms)
*
* Armenian
* 0530 - 058f
* Sriac
* 0700 - 074f
* Thaana
* 0780 - 07bf
* Devanagari
* 0900 - 097f
* Bengali
* 0980 - 09ff
* Gurmukhi
* 0a00 - 0a7f
* Gujarati
* 0a80 - 0aff
* Oriya
* 0b00 - 0b7f
* Tamil
* 0b80 - 0bff
* Telugu
* 0c00 - 0c7f
* Kannada
* 0c80 - 0cff
* Malayalam
* 0d00 - 0d7f
* Sinhala
* 0d80 - 0def
* Lao
* 0e80 - 0eff
* Tibetan
* 0f00 - 0fbf
* Myanmar
* 1000 - 109f
* Georgian
* 10a0 - 10ff
* Ethiopic
* 1200 - 137f
* Cherokee
* 13a0 - 13ff
* Canadian Aboriginal Syllabics
* 1400 - 167f
* Ogham
* 1680 - 169f
* Runic
* 16a0 - 16ff
* Khmer
* 1780 - 17ff
* Mongolian
* 1800 - 18af
* Misc - superscripts and subscripts
* 2070 - 209f
* Misc - Combining Diacritical Marks for Symbols
* 20d0 - 20ff
* Misc - Arrows
* 2190 - 21ff
* Misc - Mathematical Operators
* 2200 - 22ff
* Misc - Miscellaneous Technical
* 2300 - 23ff
* Misc - Control picture
* 2400 - 243f
* Misc - Optical character recognition
* 2440 - 2450
* Misc - Enclose Alphanumerics
* 2460 - 24ff
* Misc - Box Drawing
* 2500 - 257f
* Misc - Block Elements
* 2580 - 259f
* Misc - Geometric Shapes
* 25a0 - 25ff
* Misc - Miscellaneous Symbols
* 2600 - 267f
* Misc - Dingbats
* 2700 - 27bf
* Misc - Braille Patterns
* 2800 - 28ff
* Yi Syllables
* a000 - a48f
* Yi radicals
* a490 - a4cf
* Alphabetic Presentation Forms
* fb00 - fb4f
* Misc - Combining half Marks
* fe20 - fe2f
* Misc - small form variants
* fe50 - fe6f
* Misc - Specials
* fff0 - ffff
*********************************************************************/
static const unsigned cNumSubTables = 9;
static const unsigned cSubTableSize = 16;
static const unsigned char gUnicodeSubrangeTable[cNumSubTables][cSubTableSize] =
{
{ // table for X---
cRangeTableBase+1, //u0xxx
cRangeTableBase+2, //u1xxx
cRangeTableBase+3, //u2xxx
cRangeSetCJK, //u3xxx
cRangeSetCJK, //u4xxx
cRangeSetCJK, //u5xxx
cRangeSetCJK, //u6xxx
cRangeSetCJK, //u7xxx
cRangeSetCJK, //u8xxx
cRangeSetCJK, //u9xxx
cRangeTableBase+4, //uaxxx
cRangeKorean, //ubxxx
cRangeKorean, //ucxxx
cRangeTableBase+5, //udxxx
cRangePrivate, //uexxx
cRangeTableBase+6 //ufxxx
},
{ //table for 0X--
cRangeSetLatin, //u00xx
cRangeSetLatin, //u01xx
cRangeSetLatin, //u02xx
cRangeGreek, //u03xx XXX 0300-036f is in fact cRangeCombiningDiacriticalMarks
cRangeCyrillic, //u04xx
cRangeTableBase+7, //u05xx, includes Cyrillic supplement, Hebrew, and Armenian
cRangeArabic, //u06xx
cRangeTertiaryTable, //u07xx
cRangeUnassigned, //u08xx
cRangeTertiaryTable, //u09xx
cRangeTertiaryTable, //u0axx
cRangeTertiaryTable, //u0bxx
cRangeTertiaryTable, //u0cxx
cRangeTertiaryTable, //u0dxx
cRangeTertiaryTable, //u0exx
cRangeTibetan, //u0fxx
},
{ //table for 1x--
cRangeTertiaryTable, //u10xx
cRangeKorean, //u11xx
cRangeEthiopic, //u12xx
cRangeTertiaryTable, //u13xx
cRangeCanadian, //u14xx
cRangeCanadian, //u15xx
cRangeTertiaryTable, //u16xx
cRangeKhmer, //u17xx
cRangeMongolian, //u18xx
cRangeUnassigned, //u19xx
cRangeUnassigned, //u1axx
cRangeUnassigned, //u1bxx
cRangeUnassigned, //u1cxx
cRangeUnassigned, //u1dxx
cRangeSetLatin, //u1exx
cRangeGreek, //u1fxx
},
{ //table for 2x--
cRangeSetLatin, //u20xx
cRangeSetLatin, //u21xx
cRangeMathOperators, //u22xx
cRangeMiscTechnical, //u23xx
cRangeControlOpticalEnclose, //u24xx
cRangeBoxBlockGeometrics, //u25xx
cRangeMiscSymbols, //u26xx
cRangeDingbats, //u27xx
cRangeBraillePattern, //u28xx
cRangeUnassigned, //u29xx
cRangeUnassigned, //u2axx
cRangeUnassigned, //u2bxx
cRangeUnassigned, //u2cxx
cRangeUnassigned, //u2dxx
cRangeSetCJK, //u2exx
cRangeSetCJK, //u2fxx
},
{ //table for ax--
cRangeYi, //ua0xx
cRangeYi, //ua1xx
cRangeYi, //ua2xx
cRangeYi, //ua3xx
cRangeYi, //ua4xx
cRangeUnassigned, //ua5xx
cRangeUnassigned, //ua6xx
cRangeUnassigned, //ua7xx
cRangeUnassigned, //ua8xx
cRangeUnassigned, //ua9xx
cRangeUnassigned, //uaaxx
cRangeUnassigned, //uabxx
cRangeKorean, //uacxx
cRangeKorean, //uadxx
cRangeKorean, //uaexx
cRangeKorean, //uafxx
},
{ //table for dx--
cRangeKorean, //ud0xx
cRangeKorean, //ud1xx
cRangeKorean, //ud2xx
cRangeKorean, //ud3xx
cRangeKorean, //ud4xx
cRangeKorean, //ud5xx
cRangeKorean, //ud6xx
cRangeKorean, //ud7xx
cRangeSurrogate, //ud8xx
cRangeSurrogate, //ud9xx
cRangeSurrogate, //udaxx
cRangeSurrogate, //udbxx
cRangeSurrogate, //udcxx
cRangeSurrogate, //uddxx
cRangeSurrogate, //udexx
cRangeSurrogate, //udfxx
},
{ // table for fx--
cRangePrivate, //uf0xx
cRangePrivate, //uf1xx
cRangePrivate, //uf2xx
cRangePrivate, //uf3xx
cRangePrivate, //uf4xx
cRangePrivate, //uf5xx
cRangePrivate, //uf6xx
cRangePrivate, //uf7xx
cRangePrivate, //uf8xx
cRangeSetCJK, //uf9xx
cRangeSetCJK, //ufaxx
cRangeArabic, //ufbxx, includes alphabic presentation form
cRangeArabic, //ufcxx
cRangeArabic, //ufdxx
cRangeArabic, //ufexx, includes Combining half marks,
// CJK compatibility forms,
// CJK compatibility forms,
// small form variants
cRangeTableBase+8, //uffxx, halfwidth and fullwidth forms, includes Specials
},
{ //table for 0x0500 - 0x05ff
cRangeCyrillic, //u050x
cRangeCyrillic, //u051x
cRangeCyrillic, //u052x
cRangeArmenian, //u053x
cRangeArmenian, //u054x
cRangeArmenian, //u055x
cRangeArmenian, //u056x
cRangeArmenian, //u057x
cRangeArmenian, //u058x
cRangeHebrew, //u059x
cRangeHebrew, //u05ax
cRangeHebrew, //u05bx
cRangeHebrew, //u05cx
cRangeHebrew, //u05dx
cRangeHebrew, //u05ex
cRangeHebrew, //u05fx
},
{ //table for 0xff00 - 0xffff
cRangeSetCJK, //uff0x, fullwidth latin
cRangeSetCJK, //uff1x, fullwidth latin
cRangeSetCJK, //uff2x, fullwidth latin
cRangeSetCJK, //uff3x, fullwidth latin
cRangeSetCJK, //uff4x, fullwidth latin
cRangeSetCJK, //uff5x, fullwidth latin
cRangeSetCJK, //uff6x, halfwidth katakana
cRangeSetCJK, //uff7x, halfwidth katakana
cRangeSetCJK, //uff8x, halfwidth katakana
cRangeSetCJK, //uff9x, halfwidth katakana
cRangeSetCJK, //uffax, halfwidth hangul jamo
cRangeSetCJK, //uffbx, halfwidth hangul jamo
cRangeSetCJK, //uffcx, halfwidth hangul jamo
cRangeSetCJK, //uffdx, halfwidth hangul jamo
cRangeSetCJK, //uffex, fullwidth symbols
cRangeSpecials, //ufffx, Specials
},
};
// Most scripts between U+0700 and U+16FF are assigned a chunk of 128 (0x80)
// code points so that the number of entries in the tertiary range
// table for that range is obtained by dividing (0x1700 - 0x0700) by 128.
// Exceptions: Ethiopic, Tibetan, Hangul Jamo and Canadian aboriginal
// syllabaries take multiple chunks and Ogham and Runic share a single chunk.
static const unsigned cTertiaryTableSize = ((0x1700 - 0x0700) / 0x80);
static const unsigned char gUnicodeTertiaryRangeTable[cTertiaryTableSize] =
{ //table for 0x0700 - 0x1600
cRangeSyriac, //u070x
cRangeThaana, //u078x
cRangeUnassigned, //u080x place holder(resolved in the 2ndary tab.)
cRangeUnassigned, //u088x place holder(resolved in the 2ndary tab.)
cRangeDevanagari, //u090x
cRangeBengali, //u098x
cRangeGurmukhi, //u0a0x
cRangeGujarati, //u0a8x
cRangeOriya, //u0b0x
cRangeTamil, //u0b8x
cRangeTelugu, //u0c0x
cRangeKannada, //u0c8x
cRangeMalayalam, //u0d0x
cRangeSinhala, //u0d8x
cRangeThai, //u0e0x
cRangeLao, //u0e8x
cRangeTibetan, //u0f0x place holder(resolved in the 2ndary tab.)
cRangeTibetan, //u0f8x place holder(resolved in the 2ndary tab.)
cRangeMyanmar, //u100x
cRangeGeorgian, //u108x
cRangeKorean, //u110x place holder(resolved in the 2ndary tab.)
cRangeKorean, //u118x place holder(resolved in the 2ndary tab.)
cRangeEthiopic, //u120x place holder(resolved in the 2ndary tab.)
cRangeEthiopic, //u128x place holder(resolved in the 2ndary tab.)
cRangeEthiopic, //u130x
cRangeCherokee, //u138x
cRangeCanadian, //u140x place holder(resolved in the 2ndary tab.)
cRangeCanadian, //u148x place holder(resolved in the 2ndary tab.)
cRangeCanadian, //u150x place holder(resolved in the 2ndary tab.)
cRangeCanadian, //u158x place holder(resolved in the 2ndary tab.)
cRangeCanadian, //u160x
cRangeOghamRunic, //u168x this contains two scripts, Ogham & Runic
};
// A two level index is almost enough for locating a range, with the
// exception of u03xx and u05xx. Since we don't really care about range for
// combining diacritical marks in our font application, they are
// not discriminated further. Future adoption of this method for other use
// should be aware of this limitation. The implementation can be extended if
// there is such a need.
// For Indic, Southeast Asian scripts and some other scripts between
// U+0700 and U+16FF, it's extended to the third level.
unsigned int findCharUnicodeRange(UChar32 ch)
{
if (ch >= 0xFFFF)
return 0;
unsigned int range;
//search the first table
range = gUnicodeSubrangeTable[0][ch >> 12];
if (range < cRangeTableBase)
// we try to get a specific range
return range;
// otherwise, we have one more table to look at
range = gUnicodeSubrangeTable[range - cRangeTableBase][(ch & 0x0f00) >> 8];
if (range < cRangeTableBase)
return range;
if (range < cRangeTertiaryTable)
return gUnicodeSubrangeTable[range - cRangeTableBase][(ch & 0x00f0) >> 4];
// Yet another table to look at : U+0700 - U+16FF : 128 code point blocks
return gUnicodeTertiaryRangeTable[(ch - 0x0700) >> 7];
}
const char* langGroupFromUnicodeRange(unsigned char unicodeRange)
{
if (cRangeSpecificItemNum > unicodeRange)
return gUnicodeRangeToLangGroupTable[unicodeRange];
return 0;
}
}
|
