enc/big5.c

   1 /**********************************************************************
   2   big5.c -  Oniguruma (regular expression library)
   3 **********************************************************************/
   4 /*-
   5  * Copyright (c) 2002-2007  K.Kosako  <sndgk393 AT ybb DOT ne DOT jp>
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #include "regenc.h"
  31
  32 static const int EncLen_BIG5[] = {
  33   1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  34   1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  35   1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  36   1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  37   1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  38   1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  39   1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  40   1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  41   1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  42   1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  43   1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
  44   2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
  45   2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
  46   2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
  47   2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
  48   2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1
  49 };
  50 static const int EncLen_BIG5_HKSCS[] = {
  51  /* LEN  0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F */
  52  /* 0 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  53  /* 1 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  54  /* 2 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  55  /* 3 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  56  /* 4 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  57  /* 5 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  58  /* 6 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  59  /* 7 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  60  /* 8 */ 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2,
  61  /* 9 */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
  62  /* A */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
  63  /* B */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
  64  /* C */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
  65  /* D */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
  66  /* E */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
  67  /* F */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1,
  68 };
  69
  70 static const int EncLen_BIG5_UAO[] = {
  71  /* LEN  0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F */
  72  /* 0 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  73  /* 1 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  74  /* 2 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  75  /* 3 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  76  /* 4 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  77  /* 5 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  78  /* 6 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  79  /* 7 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  80  /* 8 */ 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
  81  /* 9 */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
  82  /* A */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
  83  /* B */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
  84  /* C */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
  85  /* D */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
  86  /* E */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
  87  /* F */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1,
  88 };
  89
  90 typedef enum { FAILURE = -2, ACCEPT = -1, S0 = 0, S1 } state_t;
  91 #define A ACCEPT
  92 #define F FAILURE
  93 static const signed char trans[][0x100] = {
  94   { /* S0   0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f */
  95     /* 0 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
  96     /* 1 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
  97     /* 2 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
  98     /* 3 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
  99     /* 4 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
 100     /* 5 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
 101     /* 6 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
 102     /* 7 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
 103     /* 8 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
 104     /* 9 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
 105     /* a */ F, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 106     /* b */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 107     /* c */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 108     /* d */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 109     /* e */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 110     /* f */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, F
 111   },
 112   { /* S1   0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f */
 113     /* 0 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
 114     /* 1 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
 115     /* 2 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
 116     /* 3 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
 117     /* 4 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
 118     /* 5 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
 119     /* 6 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
 120     /* 7 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, F,
 121     /* 8 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
 122     /* 9 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
 123     /* a */ F, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
 124     /* b */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
 125     /* c */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
 126     /* d */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
 127     /* e */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
 128     /* f */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, F
 129   },
 130   { /* S2   0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f */
 131     /* 0 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
 132     /* 1 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
 133     /* 2 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
 134     /* 3 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
 135     /* 4 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
 136     /* 5 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
 137     /* 6 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
 138     /* 7 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
 139     /* 8 */ F, F, F, F, F, F, F, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 140     /* 9 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 141     /* a */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 142     /* b */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 143     /* c */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 144     /* d */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 145     /* e */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 146     /* f */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, F
 147   }
 148 };
 149 #undef A
 150 #undef F
 151
 152 static int
 153 big5_mbc_enc_len0(const UChar* p, const UChar* e, int tridx, const int tbl[])
 154 {
 155   int firstbyte = *p++;
 156   state_t s = trans[tridx][firstbyte];
 157 #define RETURN(n) \
 158     return s == ACCEPT ? ONIGENC_CONSTRUCT_MBCLEN_CHARFOUND(n) : \
 159                          ONIGENC_CONSTRUCT_MBCLEN_INVALID()
 160   if (s < 0) RETURN(1);
 161   if (p == e) return ONIGENC_CONSTRUCT_MBCLEN_NEEDMORE(tbl[firstbyte]-1);
 162   s = trans[s][*p++];
 163   RETURN(2);
 164 #undef RETURN
 165 }
 166
 167 static int
 168 big5_mbc_enc_len(const UChar* p, const UChar* e, OnigEncoding enc ARG_UNUSED)
 169 {
 170   return big5_mbc_enc_len0(p, e, 0, EncLen_BIG5);
 171 }
 172
 173 static int
 174 big5_hkscs_mbc_enc_len(const UChar* p, const UChar* e, OnigEncoding enc ARG_UNUSED)
 175 {
 176   return big5_mbc_enc_len0(p, e, 2, EncLen_BIG5_HKSCS);
 177 }
 178
 179 static int
 180 big5_uao_mbc_enc_len(const UChar* p, const UChar* e, OnigEncoding enc ARG_UNUSED)
 181 {
 182   return big5_mbc_enc_len0(p, e, 2, EncLen_BIG5_UAO);
 183 }
 184
 185 static OnigCodePoint
 186 big5_mbc_to_code(const UChar* p, const UChar* end, OnigEncoding enc)
 187 {
 188   return onigenc_mbn_mbc_to_code(enc, p, end);
 189 }
 190
 191 static int
 192 big5_code_to_mbc(OnigCodePoint code, UChar *buf, OnigEncoding enc)
 193 {
 194   return onigenc_mb2_code_to_mbc(enc, code, buf);
 195 }
 196
 197 static int
 198 big5_mbc_case_fold(OnigCaseFoldType flag, const UChar** pp, const UChar* end,
 199                    UChar* lower, OnigEncoding enc)
 200 {
 201   return onigenc_mbn_mbc_case_fold(enc, flag,
 202                                    pp, end, lower);
 203 }
 204
 205 #if 0
 206 static int
 207 big5_is_mbc_ambiguous(OnigCaseFoldType flag,
 208                       const UChar** pp, const UChar* end, OnigEncoding enc)
 209 {
 210   return onigenc_mbn_is_mbc_ambiguous(enc, flag, pp, end);
 211 }
 212 #endif
 213
 214 static int
 215 big5_is_code_ctype(OnigCodePoint code, unsigned int ctype, OnigEncoding enc)
 216 {
 217   return onigenc_mb2_is_code_ctype(enc, code, ctype);
 218 }
 219
 220 static const char BIG5_CAN_BE_TRAIL_TABLE[256] = {
 221   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 222   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 223   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 224   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 225   1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 226   1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 227   1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 228   1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0,
 229   1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 230   1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 231   1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 232   1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 233   1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 234   1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 235   1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 236   1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0
 237 };
 238
 239 #define BIG5_HKSCS_P(enc) ((enc)->precise_mbc_enc_len == big5_hkscs_mbc_enc_len)
 240 #define BIG5_UAO_P(enc) ((enc)->precise_mbc_enc_len == big5_uao_mbc_enc_len)
 241
 242 #define BIG5_ISMB_FIRST(byte)  ( \
 243         BIG5_HKSCS_P(enc) ? EncLen_BIG5_HKSCS[byte] > 1 : \
 244         EncLen_BIG5[byte] > 1 \
 245         )
 246 #define BIG5_ISMB_TRAIL(byte)  BIG5_CAN_BE_TRAIL_TABLE[(byte)]
 247
 248 static UChar*
 249 big5_left_adjust_char_head(const UChar* start, const UChar* s, const UChar* end, OnigEncoding enc)
 250 {
 251   const UChar *p;
 252   int len;
 253
 254   if (s <= start) return (UChar* )s;
 255   p = s;
 256
 257   if (BIG5_ISMB_TRAIL(*p)) {
 258     while (p > start) {
 259       if (! BIG5_ISMB_FIRST(*--p)) {
 260         p++;
 261         break;
 262       }
 263     }
 264   }
 265   len = enclen(enc, p, end);
 266   if (p + len > s) return (UChar* )p;
 267   p += len;
 268   return (UChar* )(p + ((s - p) & ~1));
 269 }
 270
 271 static int
 272 big5_is_allowed_reverse_match(const UChar* s, const UChar* end ARG_UNUSED, OnigEncoding enc ARG_UNUSED)
 273 {
 274   const UChar c = *s;
 275
 276   return (BIG5_ISMB_TRAIL(c) ? FALSE : TRUE);
 277 }
 278
 279 /*
 280  * Name: Big5  (preferred MIME name)
 281  * MIBenum: 2026
 282  * Source: Chinese for Taiwan Multi-byte set.
 283  *         PCL Symbol Set Id: 18T
 284  * Alias: csBig5
 285  */
 286 OnigEncodingDefine(big5, BIG5) = {
 287   big5_mbc_enc_len,
 288   "Big5",     /* name */
 289   2,          /* max enc length */
 290   1,          /* min enc length */
 291   onigenc_is_mbc_newline_0x0a,
 292   big5_mbc_to_code,
 293   onigenc_mb2_code_to_mbclen,
 294   big5_code_to_mbc,
 295   big5_mbc_case_fold,
 296   onigenc_ascii_apply_all_case_fold,
 297   onigenc_ascii_get_case_fold_codes_by_str,
 298   onigenc_minimum_property_name_to_ctype,
 299   big5_is_code_ctype,
 300   onigenc_not_support_get_ctype_code_range,
 301   big5_left_adjust_char_head,
 302   big5_is_allowed_reverse_match,
 303   onigenc_ascii_only_case_map,
 304   0,
 305   ONIGENC_FLAG_NONE,
 306 };
 307
 308 /*
 309  * Name: CP950
 310  * Source: http://msdn.microsoft.com/en-us/goglobal/cc305155.aspx
 311  */
 312 ENC_REPLICATE("CP950", "Big5")
 313
 314 /*
 315  * Name: Big5-HKSCS
 316  * MIBenum: 2101
 317  * Source: http://www.iana.org/assignments/charset-reg/Big5-HKSCS
 318  * Source: http://www.ogcio.gov.hk/ccli/eng/hkscs/mapping_table_2008.html
 319  * Alias: None
 320  */
 321 OnigEncodingDefine(big5_hkscs, BIG5_HKSCS) = {
 322   big5_hkscs_mbc_enc_len,
 323   "Big5-HKSCS",     /* name */
 324   2,          /* max enc length */
 325   1,          /* min enc length */
 326   onigenc_is_mbc_newline_0x0a,
 327   big5_mbc_to_code,
 328   onigenc_mb2_code_to_mbclen,
 329   big5_code_to_mbc,
 330   big5_mbc_case_fold,
 331   onigenc_ascii_apply_all_case_fold,
 332   onigenc_ascii_get_case_fold_codes_by_str,
 333   onigenc_minimum_property_name_to_ctype,
 334   big5_is_code_ctype,
 335   onigenc_not_support_get_ctype_code_range,
 336   big5_left_adjust_char_head,
 337   big5_is_allowed_reverse_match,
 338   onigenc_ascii_only_case_map,
 339   0,
 340   ONIGENC_FLAG_NONE,
 341 };
 342 ENC_ALIAS("Big5-HKSCS:2008", "Big5-HKSCS")
 343
 344 /*
 345  * Name: CP951
 346  * Source: http://www.microsoft.com/hk/hkscs/default.aspx
 347  * Source: http://www.microsoft.com/downloads/en/details.aspx?FamilyID=0e6f5ac8-7baa-4571-b8e8-78b3b776afd7&DisplayLang=en
 348  * Source: http://blogs.msdn.com/b/shawnste/archive/2007/03/12/cp-951-hkscs.aspx
 349  */
 350 ENC_REPLICATE("CP951", "Big5-HKSCS")
 351
 352 /*
 353  * Name: Big5-UAO [NOT registered by IANA!]
 354  * Source: http://moztw.org/docs/big5/table/big5_2003-b2u.txt
 355  */
 356 OnigEncodingDefine(big5_uao, BIG5_UAO) = {
 357   big5_uao_mbc_enc_len,
 358   "Big5-UAO",     /* name */
 359   2,          /* max enc length */
 360   1,          /* min enc length */
 361   onigenc_is_mbc_newline_0x0a,
 362   big5_mbc_to_code,
 363   onigenc_mb2_code_to_mbclen,
 364   big5_code_to_mbc,
 365   big5_mbc_case_fold,
 366   onigenc_ascii_apply_all_case_fold,
 367   onigenc_ascii_get_case_fold_codes_by_str,
 368   onigenc_minimum_property_name_to_ctype,
 369   big5_is_code_ctype,
 370   onigenc_not_support_get_ctype_code_range,
 371   big5_left_adjust_char_head,
 372   big5_is_allowed_reverse_match,
 373   onigenc_ascii_only_case_map,
 374   0,
 375   ONIGENC_FLAG_NONE,
 376 };