File: ctype-big5.c

package info (click to toggle)
mysql 3.23.49-8.13
  • links: PTS
  • area: main
  • in suites: woody
  • size: 65,624 kB
  • ctags: 45,242
  • sloc: ansic: 255,722; cpp: 86,801; perl: 26,117; tcl: 19,882; sh: 18,775; asm: 4,001; yacc: 2,626; makefile: 2,494; java: 2,300; awk: 1,484; sed: 428
file content (389 lines) | stat: -rw-r--r-- 18,836 bytes parent folder | download | duplicates (2)
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
/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
   
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 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
   Library General Public License for more details.
   
   You should have received a copy of the GNU Library General Public
   License along with this library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
   MA 02111-1307, USA */

/*
 * This file is basicly usa7 character sets with some extra functions
 * for big5 handling
*/

/*
 * This comment is parsed by configure to create ctype.c,
 * so don't change it unless you know what you are doing.
 *
 * .configure. strxfrm_multiply_big5=1
 * .configure. mbmaxlen_big5=2
 */

#include <global.h>
#include "m_string.h"
#include "m_ctype.h"

/* Support for Chinese(BIG5) characters, by jou@nematic.ieo.nctu.edu.tw
   modified by Wei He (hewei@mail.ied.ac.cn) */

#define isbig5head(c) (0xa1<=(uchar)(c) && (uchar)(c)<=0xf9)
#define isbig5tail(c) ((0x40<=(uchar)(c) && (uchar)(c)<=0x7e) || \
                      (0xa1<=(uchar)(c) && (uchar)(c)<=0xfe))

#define isbig5code(c,d) (isbig5head(c) && isbig5tail(d))
#define big5code(c,d)   (((uchar)(c) <<8) | (uchar)(d))
#define big5head(e)	((uchar)(e>>8))
#define big5tail(e)	((uchar)(e&0xff))

uchar NEAR ctype_big5[257] =
{
  0,				/* For standard library */
  32,32,32,32,32,32,32,32,32,40,40,40,40,40,32,32,
  32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,
  72,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,
  132,132,132,132,132,132,132,132,132,132,16,16,16,16,16,16,
  16,129,129,129,129,129,129,1,1,1,1,1,1,1,1,1,
  1,1,1,1,1,1,1,1,1,1,1,16,16,16,16,16,
  16,130,130,130,130,130,130,2,2,2,2,2,2,2,2,2,
  2,2,2,2,2,2,2,2,2,2,2,16,16,16,16,32,
  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
};

uchar NEAR to_lower_big5[]=
{
  '\000','\001','\002','\003','\004','\005','\006','\007',
  '\010','\011','\012','\013','\014','\015','\016','\017',
  '\020','\021','\022','\023','\024','\025','\026','\027',
  '\030','\031','\032','\033','\034','\035','\036','\037',
  ' ',	 '!',	'"',   '#',   '$',   '%',   '&',   '\'',
  '(',	 ')',	'*',   '+',   ',',   '-',   '.',   '/',
  '0',	 '1',	'2',   '3',   '4',   '5',   '6',   '7',
  '8',	 '9',	':',   ';',   '<',   '=',   '>',   '?',
  '@',	 'a',	'b',   'c',   'd',   'e',   'f',   'g',
  'h',	 'i',	'j',   'k',   'l',   'm',   'n',   'o',
  'p',	 'q',	'r',   's',   't',   'u',   'v',   'w',
  'x',	 'y',	'z',   '[',   '\\',  ']',   '^',   '_',
  '`',	 'a',	'b',   'c',   'd',   'e',   'f',   'g',
  'h',	 'i',	'j',   'k',   'l',   'm',   'n',   'o',
  'p',	 'q',	'r',   's',   't',   'u',   'v',   'w',
  'x',	 'y',	'z',   '{',   '|',   '}',   '~',   '\177',
  (uchar) '\200',(uchar) '\201',(uchar) '\202',(uchar) '\203',(uchar) '\204',(uchar) '\205',(uchar) '\206',(uchar) '\207',
  (uchar) '\210',(uchar) '\211',(uchar) '\212',(uchar) '\213',(uchar) '\214',(uchar) '\215',(uchar) '\216',(uchar) '\217',
  (uchar) '\220',(uchar) '\221',(uchar) '\222',(uchar) '\223',(uchar) '\224',(uchar) '\225',(uchar) '\226',(uchar) '\227',
  (uchar) '\230',(uchar) '\231',(uchar) '\232',(uchar) '\233',(uchar) '\234',(uchar) '\235',(uchar) '\236',(uchar) '\237',
  (uchar) '\240',(uchar) '\241',(uchar) '\242',(uchar) '\243',(uchar) '\244',(uchar) '\245',(uchar) '\246',(uchar) '\247',
  (uchar) '\250',(uchar) '\251',(uchar) '\252',(uchar) '\253',(uchar) '\254',(uchar) '\255',(uchar) '\256',(uchar) '\257',
  (uchar) '\260',(uchar) '\261',(uchar) '\262',(uchar) '\263',(uchar) '\264',(uchar) '\265',(uchar) '\266',(uchar) '\267',
  (uchar) '\270',(uchar) '\271',(uchar) '\272',(uchar) '\273',(uchar) '\274',(uchar) '\275',(uchar) '\276',(uchar) '\277',
  (uchar) '\300',(uchar) '\301',(uchar) '\302',(uchar) '\303',(uchar) '\304',(uchar) '\305',(uchar) '\306',(uchar) '\307',
  (uchar) '\310',(uchar) '\311',(uchar) '\312',(uchar) '\313',(uchar) '\314',(uchar) '\315',(uchar) '\316',(uchar) '\317',
  (uchar) '\320',(uchar) '\321',(uchar) '\322',(uchar) '\323',(uchar) '\324',(uchar) '\325',(uchar) '\326',(uchar) '\327',
  (uchar) '\330',(uchar) '\331',(uchar) '\332',(uchar) '\333',(uchar) '\334',(uchar) '\335',(uchar) '\336',(uchar) '\337',
  (uchar) '\340',(uchar) '\341',(uchar) '\342',(uchar) '\343',(uchar) '\344',(uchar) '\345',(uchar) '\346',(uchar) '\347',
  (uchar) '\350',(uchar) '\351',(uchar) '\352',(uchar) '\353',(uchar) '\354',(uchar) '\355',(uchar) '\356',(uchar) '\357',
  (uchar) '\360',(uchar) '\361',(uchar) '\362',(uchar) '\363',(uchar) '\364',(uchar) '\365',(uchar) '\366',(uchar) '\367',
  (uchar) '\370',(uchar) '\371',(uchar) '\372',(uchar) '\373',(uchar) '\374',(uchar) '\375',(uchar) '\376',(uchar) '\377',
};

uchar NEAR to_upper_big5[]=
{
  '\000','\001','\002','\003','\004','\005','\006','\007',
  '\010','\011','\012','\013','\014','\015','\016','\017',
  '\020','\021','\022','\023','\024','\025','\026','\027',
  '\030','\031','\032','\033','\034','\035','\036','\037',
  ' ',	 '!',	'"',   '#',   '$',   '%',   '&',   '\'',
  '(',	 ')',	'*',   '+',   ',',   '-',   '.',   '/',
  '0',	 '1',	'2',   '3',   '4',   '5',   '6',   '7',
  '8',	 '9',	':',   ';',   '<',   '=',   '>',   '?',
  '@',	 'A',	'B',   'C',   'D',   'E',   'F',   'G',
  'H',	 'I',	'J',   'K',   'L',   'M',   'N',   'O',
  'P',	 'Q',	'R',   'S',   'T',   'U',   'V',   'W',
  'X',	 'Y',	'Z',   '[',   '\\',  ']',   '^',   '_',
  '`',	 'A',	'B',   'C',   'D',   'E',   'F',   'G',
  'H',	 'I',	'J',   'K',   'L',   'M',   'N',   'O',
  'P',	 'Q',	'R',   'S',   'T',   'U',   'V',   'W',
  'X',	 'Y',	'Z',   '{',   '|',   '}',   '~',   '\177',
  (uchar) '\200',(uchar) '\201',(uchar) '\202',(uchar) '\203',(uchar) '\204',(uchar) '\205',(uchar) '\206',(uchar) '\207',
  (uchar) '\210',(uchar) '\211',(uchar) '\212',(uchar) '\213',(uchar) '\214',(uchar) '\215',(uchar) '\216',(uchar) '\217',
  (uchar) '\220',(uchar) '\221',(uchar) '\222',(uchar) '\223',(uchar) '\224',(uchar) '\225',(uchar) '\226',(uchar) '\227',
  (uchar) '\230',(uchar) '\231',(uchar) '\232',(uchar) '\233',(uchar) '\234',(uchar) '\235',(uchar) '\236',(uchar) '\237',
  (uchar) '\240',(uchar) '\241',(uchar) '\242',(uchar) '\243',(uchar) '\244',(uchar) '\245',(uchar) '\246',(uchar) '\247',
  (uchar) '\250',(uchar) '\251',(uchar) '\252',(uchar) '\253',(uchar) '\254',(uchar) '\255',(uchar) '\256',(uchar) '\257',
  (uchar) '\260',(uchar) '\261',(uchar) '\262',(uchar) '\263',(uchar) '\264',(uchar) '\265',(uchar) '\266',(uchar) '\267',
  (uchar) '\270',(uchar) '\271',(uchar) '\272',(uchar) '\273',(uchar) '\274',(uchar) '\275',(uchar) '\276',(uchar) '\277',
  (uchar) '\300',(uchar) '\301',(uchar) '\302',(uchar) '\303',(uchar) '\304',(uchar) '\305',(uchar) '\306',(uchar) '\307',
  (uchar) '\310',(uchar) '\311',(uchar) '\312',(uchar) '\313',(uchar) '\314',(uchar) '\315',(uchar) '\316',(uchar) '\317',
  (uchar) '\320',(uchar) '\321',(uchar) '\322',(uchar) '\323',(uchar) '\324',(uchar) '\325',(uchar) '\326',(uchar) '\327',
  (uchar) '\330',(uchar) '\331',(uchar) '\332',(uchar) '\333',(uchar) '\334',(uchar) '\335',(uchar) '\336',(uchar) '\337',
  (uchar) '\340',(uchar) '\341',(uchar) '\342',(uchar) '\343',(uchar) '\344',(uchar) '\345',(uchar) '\346',(uchar) '\347',
  (uchar) '\350',(uchar) '\351',(uchar) '\352',(uchar) '\353',(uchar) '\354',(uchar) '\355',(uchar) '\356',(uchar) '\357',
  (uchar) '\360',(uchar) '\361',(uchar) '\362',(uchar) '\363',(uchar) '\364',(uchar) '\365',(uchar) '\366',(uchar) '\367',
  (uchar) '\370',(uchar) '\371',(uchar) '\372',(uchar) '\373',(uchar) '\374',(uchar) '\375',(uchar) '\376',(uchar) '\377',
};

uchar NEAR sort_order_big5[]=
{
  '\000','\001','\002','\003','\004','\005','\006','\007',
  '\010','\011','\012','\013','\014','\015','\016','\017',
  '\020','\021','\022','\023','\024','\025','\026','\027',
  '\030','\031','\032','\033','\034','\035','\036','\037',
  ' ',	 '!',	'"',   '#',   '$',   '%',   '&',   '\'',
  '(',	 ')',	'*',   '+',   ',',   '-',   '.',   '/',
  '0',	 '1',	'2',   '3',   '4',   '5',   '6',   '7',
  '8',	 '9',	':',   ';',   '<',   '=',   '>',   '?',
  '@',	 'A',	'B',   'C',   'D',   'E',   'F',   'G',
  'H',	 'I',	'J',   'K',   'L',   'M',   'N',   'O',
  'P',	 'Q',	'R',   'S',   'T',   'U',   'V',   'W',
  'X',	 'Y',	'Z',   '\\',  ']',   '[',   '^',   '_',
  'E',	 'A',	'B',   'C',   'D',   'E',   'F',   'G',
  'H',	 'I',	'J',   'K',   'L',   'M',   'N',   'O',
  'P',	 'Q',	'R',   'S',   'T',   'U',   'V',   'W',
  'X',	 'Y',	'Z',   '{',   '|',   '}',   'Y',   '\177',
  (uchar) '\200',(uchar) '\201',(uchar) '\202',(uchar) '\203',(uchar) '\204',(uchar) '\205',(uchar) '\206',(uchar) '\207',
  (uchar) '\210',(uchar) '\211',(uchar) '\212',(uchar) '\213',(uchar) '\214',(uchar) '\215',(uchar) '\216',(uchar) '\217',
  (uchar) '\220',(uchar) '\221',(uchar) '\222',(uchar) '\223',(uchar) '\224',(uchar) '\225',(uchar) '\226',(uchar) '\227',
  (uchar) '\230',(uchar) '\231',(uchar) '\232',(uchar) '\233',(uchar) '\234',(uchar) '\235',(uchar) '\236',(uchar) '\237',
  (uchar) '\240',(uchar) '\241',(uchar) '\242',(uchar) '\243',(uchar) '\244',(uchar) '\245',(uchar) '\246',(uchar) '\247',
  (uchar) '\250',(uchar) '\251',(uchar) '\252',(uchar) '\253',(uchar) '\254',(uchar) '\255',(uchar) '\256',(uchar) '\257',
  (uchar) '\260',(uchar) '\261',(uchar) '\262',(uchar) '\263',(uchar) '\264',(uchar) '\265',(uchar) '\266',(uchar) '\267',
  (uchar) '\270',(uchar) '\271',(uchar) '\272',(uchar) '\273',(uchar) '\274',(uchar) '\275',(uchar) '\276',(uchar) '\277',
  (uchar) '\300',(uchar) '\301',(uchar) '\302',(uchar) '\303',(uchar) '\304',(uchar) '\305',(uchar) '\306',(uchar) '\307',
  (uchar) '\310',(uchar) '\311',(uchar) '\312',(uchar) '\313',(uchar) '\314',(uchar) '\315',(uchar) '\316',(uchar) '\317',
  (uchar) '\320',(uchar) '\321',(uchar) '\322',(uchar) '\323',(uchar) '\324',(uchar) '\325',(uchar) '\326',(uchar) '\327',
  (uchar) '\330',(uchar) '\331',(uchar) '\332',(uchar) '\333',(uchar) '\334',(uchar) '\335',(uchar) '\336',(uchar) '\337',
  (uchar) '\340',(uchar) '\341',(uchar) '\342',(uchar) '\343',(uchar) '\344',(uchar) '\345',(uchar) '\346',(uchar) '\347',
  (uchar) '\350',(uchar) '\351',(uchar) '\352',(uchar) '\353',(uchar) '\354',(uchar) '\355',(uchar) '\356',(uchar) '\357',
  (uchar) '\360',(uchar) '\361',(uchar) '\362',(uchar) '\363',(uchar) '\364',(uchar) '\365',(uchar) '\366',(uchar) '\367',
  (uchar) '\370',(uchar) '\371',(uchar) '\372',(uchar) '\373',(uchar) '\374',(uchar) '\375',(uchar) '\376',(uchar) '\377',
};

static uint16 big5strokexfrm(uint16 i)
{
  if ((i == 0xA440) || (i == 0xA441))  return 0xA440;
  else if (((i >= 0xA442) && (i <= 0xA453)) || ((i >= 0xC940) && (i <= 0xC944)))  return 0xA442;
  else if (((i >= 0xA454) && (i <= 0xA47E)) || ((i >= 0xC945) && (i <= 0xC94C)))  return 0xA454;
  else if (((i >= 0xA4A1) && (i <= 0xA4FD)) || ((i >= 0xC94D) && (i <= 0xC962)))  return 0xA4A1;
  else if (((i >= 0xA4FE) && (i <= 0xA5DF)) || ((i >= 0xC963) && (i <= 0xC9AA)))  return 0xA4FE;
  else if (((i >= 0xA5E0) && (i <= 0xA6E9)) || ((i >= 0xC9AB) && (i <= 0xCA59)))  return 0xA5E0;
  else if (((i >= 0xA6EA) && (i <= 0xA8C2)) || ((i >= 0xCA5A) && (i <= 0xCBB0)))  return 0xA6EA;
  else if ((i == 0xA260) || ((i >= 0xA8C3) && (i <= 0xAB44)) || ((i >= 0xCBB1) && (i <= 0xCDDC)))  return 0xA8C3;
  else if ((i == 0xA259) || (i == 0xF9DA) || ((i >= 0xAB45) && (i <= 0xADBB)) || ((i >= 0xCDDD) && (i <= 0xD0C7)))  return 0xAB45;
  else if ((i == 0xA25A) || ((i >= 0xADBC) && (i <= 0xB0AD)) || ((i >= 0xD0C8) && (i <= 0xD44A)))  return 0xADBC;
  else if ((i == 0xA25B) || (i == 0xA25C) || ((i >= 0xB0AE) && (i <= 0xB3C2)) || ((i >= 0xD44B) && (i <= 0xD850)))  return 0xB0AE;
  else if ((i == 0xF9DB) || ((i >= 0xB3C3) && (i <= 0xB6C2)) || ((i >= 0xD851) && (i <= 0xDCB0)))  return 0xB3C3;
  else if ((i == 0xA25D) || (i == 0xA25F) || (i == 0xC6A1) || (i == 0xF9D6) || (i == 0xF9D8) || ((i >= 0xB6C3) && (i <= 0xB9AB)) || ((i >= 0xDCB1) && (i <= 0xE0EF)))  return 0xB6C3;
  else if ((i == 0xF9DC) || ((i >= 0xB9AC) && (i <= 0xBBF4)) || ((i >= 0xE0F0) && (i <= 0xE4E5)))  return 0xB9AC;
  else if ((i == 0xA261) || ((i >= 0xBBF5) && (i <= 0xBEA6)) || ((i >= 0xE4E6) && (i <= 0xE8F3)))  return 0xBBF5;
  else if ((i == 0xA25E) || (i == 0xF9D7) || (i == 0xF9D9) || ((i >= 0xBEA7) && (i <= 0xC074)) || ((i >= 0xE8F4) && (i <= 0xECB8)))  return 0xBEA7;
  else if (((i >= 0xC075) && (i <= 0xC24E)) || ((i >= 0xECB9) && (i <= 0xEFB6)))  return 0xC075;
  else if (((i >= 0xC24F) && (i <= 0xC35E)) || ((i >= 0xEFB7) && (i <= 0xF1EA)))  return 0xC24F;
  else if (((i >= 0xC35F) && (i <= 0xC454)) || ((i >= 0xF1EB) && (i <= 0xF3FC)))  return 0xC35F;
  else if (((i >= 0xC455) && (i <= 0xC4D6)) || ((i >= 0xF3FD) && (i <= 0xF5BF)))  return 0xC455;
  else if (((i >= 0xC4D7) && (i <= 0xC56A)) || ((i >= 0xF5C0) && (i <= 0xF6D5)))  return 0xC4D7;
  else if (((i >= 0xC56B) && (i <= 0xC5C7)) || ((i >= 0xF6D6) && (i <= 0xF7CF)))  return 0xC56B;
  else if (((i >= 0xC5C8) && (i <= 0xC5F0)) || ((i >= 0xF7D0) && (i <= 0xF8A4)))  return 0xC5C8;
  else if (((i >= 0xC5F1) && (i <= 0xC654)) || ((i >= 0xF8A5) && (i <= 0xF8ED)))  return 0xC5F1;
  else if (((i >= 0xC655) && (i <= 0xC664)) || ((i >= 0xF8EE) && (i <= 0xF96A)))  return 0xC655;
  else if (((i >= 0xC665) && (i <= 0xC66B)) || ((i >= 0xF96B) && (i <= 0xF9A1)))  return 0xC665;
  else if (((i >= 0xC66C) && (i <= 0xC675)) || ((i >= 0xF9A2) && (i <= 0xF9B9)))  return 0xC66C;
  else if (((i >= 0xC676) && (i <= 0xC678)) || ((i >= 0xF9BA) && (i <= 0xF9C5)))  return 0xC676;
  else if (((i >= 0xC679) && (i <= 0xC67C)) || ((i >= 0xF9C7) && (i <= 0xF9CB)))  return 0xC679;
  else if ((i == 0xC67D) || ((i >= 0xF9CC) && (i <= 0xF9CF)))  return 0xC67D;
  else if (i == 0xF9D0)  return 0xF9D0;
  else if ((i == 0xC67E) || (i == 0xF9D1))  return 0xC67E;
  else if ((i == 0xF9C6) || (i == 0xF9D2))  return 0xF9C6;
  else if (i == 0xF9D3)  return 0xF9D3;
  else if (i == 0xF9D4)  return 0xF9D4;
  else if (i == 0xF9D5)  return 0xF9D5;
  return 0xA140;
}

int my_strnncoll_big5(const uchar * s1, int len1, const uchar * s2, int len2)
{
  uint len;

  len = min(len1,len2);
  while (len--)
  {
    if ((len > 0) && isbig5code(*s1,*(s1+1)) && isbig5code(*s2, *(s2+1)))
    {
      if (*s1 != *s2 || *(s1+1) != *(s2+1))
	return ((int) big5code(*s1,*(s1+1)) -
		(int) big5code(*s2,*(s2+1)));
      s1 +=2;
      s2 +=2;
      len--;
    } else if (sort_order_big5[(uchar) *s1++] != sort_order_big5[(uchar) *s2++])
      return ((int) sort_order_big5[(uchar) s1[-1]] -
	      (int) sort_order_big5[(uchar) s2[-1]]);
  }
  return (int) (len1-len2);
}

int my_strnxfrm_big5(uchar * dest, const uchar * src, int len, int srclen)
{
  uint16 e;
  /*uchar *d = dest; XXX: unused*/

  len = srclen;
  while (len--)
  {
    if ((len > 0) && isbig5code(*src, *(src+1)))
    {
      e = big5strokexfrm((uint16) big5code(*src, *(src+1)));
      *dest++ = big5head(e);
      *dest++ = big5tail(e);
      src +=2;
      len--;
    } else
      *dest++ = sort_order_big5[(uchar) *src++];
  }
  return srclen;
}

int my_strcoll_big5(const uchar * s1, const uchar * s2)
{

  while (*s1 && *s2)
  {
    if (*(s1+1) && *(s2+1) && isbig5code(*s1,*(s1+1)) && isbig5code(*s2, *(s2+1)))
    {
      if (*s1 != *s2 || *(s1+1) != *(s2+1))
	return ((int) big5code(*s1,*(s1+1)) -
		(int) big5code(*s2,*(s2+1)));
      s1 +=2;
      s2 +=2;
    } else if (sort_order_big5[(uchar) *s1++] != sort_order_big5[(uchar) *s2++])
      return ((int) sort_order_big5[(uchar) s1[-1]] -
	      (int) sort_order_big5[(uchar) s2[-1]]);
  }
  return 0;
}

int my_strxfrm_big5(uchar * dest, const uchar * src, int len)
{
  uint16 e;
  uchar *d = dest;

  if (len < 1) return 0;
  if (!*src)
  {
    *d = '\0';
    return 0;
  }
  while (*src && (len > 1))
  {
    if (*(src+1) && isbig5code(*src, *(src+1)))
    {
      e = big5strokexfrm((uint16) big5code(*src, *(src+1)));
      *d++ = big5head(e);
      *d++ = big5tail(e);
      src +=2;
      len--;
    } else
      *d++ = sort_order_big5[(uchar) *src++];
  }
  *d = '\0';
  return (int) (d-dest);
}

/*
** Calculate min_str and max_str that ranges a LIKE string.
** Arguments:
** ptr		Pointer to LIKE string.
** ptr_length	Length of LIKE string.
** escape	Escape character in LIKE.  (Normally '\').
**		All escape characters should be removed from min_str and max_str
** res_length   Length of min_str and max_str.
** min_str      Smallest case sensitive string that ranges LIKE.
**		Should be space padded to res_length.
** max_str	Largest case sensitive string that ranges LIKE.
**		Normally padded with the biggest character sort value.
**
** The function should return 0 if ok and 1 if the LIKE string can't be
** optimized !
*/

#define max_sort_char ((char) 255)
#define wild_one '_'
#define wild_many '%'

my_bool my_like_range_big5(const char *ptr,uint ptr_length,pchar escape,
		           uint res_length, char *min_str,char *max_str,
		           uint *min_length,uint *max_length)
{
  const char *end=ptr+ptr_length;
  char *min_org=min_str;
  char *min_end=min_str+res_length;

  for (; ptr != end && min_str != min_end ; ptr++)
  {
    if (ptr+1 != end && isbig5code(ptr[0],ptr[1]))
    {
      *min_str++= *max_str++ = *ptr++;
      *min_str++= *max_str++ = *ptr;
      continue;
    }
    if (*ptr == escape && ptr+1 != end)
    {
      ptr++;				/* Skipp escape */
      *min_str++= *max_str++ = *ptr;
      continue;
    }
    if (*ptr == wild_one)		/* '_' in SQL */
    {
      *min_str++='\0';			/* This should be min char */
      *max_str++=max_sort_char;
      continue;
    }
    if (*ptr == wild_many)		/* '%' in SQL */
    {
      *min_length= (uint) (min_str-min_org);
      *max_length= res_length;
      do {
	*min_str++ = '\0';		/* Because if key compression */
	*max_str++ = max_sort_char;
      } while (min_str != min_end);
      return 0;
    }
    *min_str++= *max_str++ = *ptr;
  }
  *min_length= *max_length= (uint) (min_str-min_org);
  while (min_str != min_end)
  {
    *min_str++ = ' ';			/* Because if key compression */
    *max_str++ = ' ';
  }
  return 0;
}

int ismbchar_big5(const char* p, const char *e)
{
  return (isbig5head(*(p)) && (e)-(p)>1 && isbig5tail(*((p)+1))? 2: 0);
}

my_bool ismbhead_big5(uint c)
{
  return isbig5head(c);
}

int mbcharlen_big5(uint c)
{
  return (isbig5head(c)? 2: 0);
}