enc/iso_8859_10.c

   1 /**********************************************************************
   2   iso8859_10.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 #include "iso_8859.h"
  32
  33 #define ENC_ISO_8859_10_TO_LOWER_CASE(c) EncISO_8859_10_ToLowerCaseTable[c]
  34 #define ENC_IS_ISO_8859_10_CTYPE(code,ctype) \
  35   ((EncISO_8859_10_CtypeTable[code] & CTYPE_TO_BIT(ctype)) != 0)
  36
  37 static const UChar EncISO_8859_10_ToLowerCaseTable[256] = {
  38   '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',
  39   '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',
  40   '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',
  41   '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',
  42   '\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047',
  43   '\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057',
  44   '\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067',
  45   '\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077',
  46   '\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
  47   '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
  48   '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
  49   '\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137',
  50   '\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
  51   '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
  52   '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
  53   '\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177',
  54   '\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207',
  55   '\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217',
  56   '\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227',
  57   '\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237',
  58   '\240', '\261', '\262', '\263', '\264', '\265', '\266', '\247',
  59   '\270', '\271', '\272', '\273', '\274', '\255', '\276', '\277',
  60   '\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267',
  61   '\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277',
  62   '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
  63   '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
  64   '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
  65   '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\337',
  66   '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
  67   '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
  68   '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
  69   '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377'
  70 };
  71
  72 static const unsigned short EncISO_8859_10_CtypeTable[256] = {
  73   0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008,
  74   0x4008, 0x420c, 0x4209, 0x4208, 0x4208, 0x4208, 0x4008, 0x4008,
  75   0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008,
  76   0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008,
  77   0x4284, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0,
  78   0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0,
  79   0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0,
  80   0x78b0, 0x78b0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0,
  81   0x41a0, 0x7ca2, 0x7ca2, 0x7ca2, 0x7ca2, 0x7ca2, 0x7ca2, 0x74a2,
  82   0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2,
  83   0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2,
  84   0x74a2, 0x74a2, 0x74a2, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x51a0,
  85   0x41a0, 0x78e2, 0x78e2, 0x78e2, 0x78e2, 0x78e2, 0x78e2, 0x70e2,
  86   0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2,
  87   0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2,
  88   0x70e2, 0x70e2, 0x70e2, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x4008,
  89   0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008,
  90   0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008,
  91   0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008,
  92   0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008,
  93   0x0284, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x00a0,
  94   0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x01a0, 0x34a2, 0x34a2,
  95   0x00a0, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x01a0,
  96   0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x01a0, 0x30e2, 0x30e2,
  97   0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2,
  98   0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2,
  99   0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2,
 100   0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x30e2,
 101   0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2,
 102   0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2,
 103   0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2,
 104   0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2
 105 };
 106
 107 static int
 108 mbc_case_fold(OnigCaseFoldType flag,
 109                           const UChar** pp, const UChar* end ARG_UNUSED,
 110                           UChar* lower, OnigEncoding enc ARG_UNUSED)
 111 {
 112   const UChar* p = *pp;
 113
 114   if (*p == SHARP_s && (flag & INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR) != 0) {
 115     *lower++ = 's';
 116     *lower   = 's';
 117     (*pp)++;
 118     return 2;
 119   }
 120
 121   *lower = ENC_ISO_8859_10_TO_LOWER_CASE(*p);
 122   (*pp)++;
 123   return 1;
 124 }
 125
 126 #if 0
 127 static int
 128 is_mbc_ambiguous(OnigCaseFoldType flag, const UChar** pp, const UChar* end)
 129 {
 130   int v;
 131   const UChar* p = *pp;
 132
 133   if (*p == SHARP_s && (flag & INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR) != 0) {
 134     (*pp)++;
 135     return TRUE;
 136   }
 137
 138   (*pp)++;
 139   v = (EncISO_8859_10_CtypeTable[*p] & (BIT_CTYPE_UPPER | BIT_CTYPE_LOWER));
 140   if ((v | BIT_CTYPE_LOWER) != 0) {
 141     return TRUE;
 142   }
 143
 144   return (v != 0 ? TRUE : FALSE);
 145 }
 146 #endif
 147
 148 static int
 149 is_code_ctype(OnigCodePoint code, unsigned int ctype, OnigEncoding enc ARG_UNUSED)
 150 {
 151   if (code < 256)
 152     return ENC_IS_ISO_8859_10_CTYPE(code, ctype);
 153   else
 154     return FALSE;
 155 }
 156
 157 static const OnigPairCaseFoldCodes CaseFoldMap[] = {
 158  { 0xa1, 0xb1 },
 159  { 0xa2, 0xb2 },
 160  { 0xa3, 0xb3 },
 161  { 0xa4, 0xb4 },
 162  { 0xa5, 0xb5 },
 163  { 0xa6, 0xb6 },
 164  { 0xa8, 0xb8 },
 165  { 0xa9, 0xb9 },
 166  { 0xaa, 0xba },
 167  { 0xab, 0xbb },
 168  { 0xac, 0xbc },
 169  { 0xae, 0xbe },
 170  { 0xaf, 0xbf },
 171
 172  { 0xc0, 0xe0 },
 173  { 0xc1, 0xe1 },
 174  { 0xc2, 0xe2 },
 175  { 0xc3, 0xe3 },
 176  { 0xc4, 0xe4 },
 177  { 0xc5, 0xe5 },
 178  { 0xc6, 0xe6 },
 179  { 0xc7, 0xe7 },
 180  { 0xc8, 0xe8 },
 181  { 0xc9, 0xe9 },
 182  { 0xca, 0xea },
 183  { 0xcb, 0xeb },
 184  { 0xcc, 0xec },
 185  { 0xcd, 0xed },
 186  { 0xce, 0xee },
 187  { 0xcf, 0xef },
 188
 189  { 0xd0, 0xf0 },
 190  { 0xd1, 0xf1 },
 191  { 0xd2, 0xf2 },
 192  { 0xd3, 0xf3 },
 193  { 0xd4, 0xf4 },
 194  { 0xd5, 0xf5 },
 195  { 0xd6, 0xf6 },
 196  { 0xd7, 0xf7 },
 197  { 0xd8, 0xf8 },
 198  { 0xd9, 0xf9 },
 199  { 0xda, 0xfa },
 200  { 0xdb, 0xfb },
 201  { 0xdc, 0xfc },
 202  { 0xdd, 0xfd },
 203  { 0xde, 0xfe }
 204 };
 205
 206 static int
 207 apply_all_case_fold(OnigCaseFoldType flag,
 208                                OnigApplyAllCaseFoldFunc f, void* arg,
 209                                OnigEncoding enc ARG_UNUSED)
 210 {
 211   return onigenc_apply_all_case_fold_with_map(
 212              numberof(CaseFoldMap), CaseFoldMap, 1,
 213              flag, f, arg);
 214 }
 215
 216 static int
 217 get_case_fold_codes_by_str(OnigCaseFoldType flag,
 218                            const OnigUChar* p, const OnigUChar* end,
 219                            OnigCaseFoldCodeItem items[],
 220                            OnigEncoding enc ARG_UNUSED)
 221 {
 222   return onigenc_get_case_fold_codes_by_str_with_map(
 223              numberof(CaseFoldMap), CaseFoldMap, 1,
 224              flag, p, end, items);
 225 }
 226
 227 static int
 228 case_map(OnigCaseFoldType* flagP, const OnigUChar** pp,
 229          const OnigUChar* end, OnigUChar* to, OnigUChar* to_end,
 230          const struct OnigEncodingTypeST* enc)
 231 {
 232   OnigCodePoint code;
 233   OnigUChar *to_start = to;
 234   OnigCaseFoldType flags = *flagP;
 235
 236   while (*pp < end && to < to_end) {
 237     code = *(*pp)++;
 238     if (code == SHARP_s) {
 239       if (flags & ONIGENC_CASE_UPCASE) {
 240         flags |= ONIGENC_CASE_MODIFIED;
 241         *to++ = 'S';
 242         code = (flags & ONIGENC_CASE_TITLECASE) ? 's' : 'S';
 243       }
 244       else if (flags & ONIGENC_CASE_FOLD) {
 245         flags |= ONIGENC_CASE_MODIFIED;
 246         *to++ = 's';
 247         code = 's';
 248       }
 249     }
 250     else if (code == 0xBD || code == 0xFF)
 251       ;
 252     else if ((EncISO_8859_10_CtypeTable[code] & BIT_CTYPE_UPPER)
 253              && (flags & (ONIGENC_CASE_DOWNCASE | ONIGENC_CASE_FOLD))) {
 254       flags |= ONIGENC_CASE_MODIFIED;
 255       code = ENC_ISO_8859_10_TO_LOWER_CASE(code);
 256     }
 257     else if ((EncISO_8859_10_CtypeTable[code] & BIT_CTYPE_LOWER)
 258              && (flags & ONIGENC_CASE_UPCASE)) {
 259       flags |= ONIGENC_CASE_MODIFIED;
 260       if (code >= 0xA0 && code <= 0xBF)
 261         code -= 0x10;
 262       else
 263         code -= 0x20;
 264     }
 265     *to++ = code;
 266     if (flags & ONIGENC_CASE_TITLECASE)  /* switch from titlecase to lowercase for capitalize */
 267       flags ^= (ONIGENC_CASE_UPCASE | ONIGENC_CASE_DOWNCASE | ONIGENC_CASE_TITLECASE);
 268   }
 269   *flagP = flags;
 270   return (int )(to - to_start);
 271 }
 272
 273 OnigEncodingDefine(iso_8859_10, ISO_8859_10) = {
 274   onigenc_single_byte_mbc_enc_len,
 275   "ISO-8859-10", /* name */
 276   1,             /* max enc length */
 277   1,             /* min enc length */
 278   onigenc_is_mbc_newline_0x0a,
 279   onigenc_single_byte_mbc_to_code,
 280   onigenc_single_byte_code_to_mbclen,
 281   onigenc_single_byte_code_to_mbc,
 282   mbc_case_fold,
 283   apply_all_case_fold,
 284   get_case_fold_codes_by_str,
 285   onigenc_minimum_property_name_to_ctype,
 286   is_code_ctype,
 287   onigenc_not_support_get_ctype_code_range,
 288   onigenc_single_byte_left_adjust_char_head,
 289   onigenc_always_true_is_allowed_reverse_match,
 290   case_map,
 291   0,
 292   ONIGENC_FLAG_NONE,
 293 };
 294 ENC_ALIAS("ISO8859-10", "ISO-8859-10")