enc/iso_8859_15.c

   1 /**********************************************************************
   2   iso8859_15.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 #define ENC_ISO_8859_15_TO_LOWER_CASE(c) EncISO_8859_15_ToLowerCaseTable[c]
  33 #define ENC_IS_ISO_8859_15_CTYPE(code,ctype) \
  34   ((EncISO_8859_15_CtypeTable[code] & CTYPE_TO_BIT(ctype)) != 0)
  35
  36 static const UChar EncISO_8859_15_ToLowerCaseTable[256] = {
  37   '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',
  38   '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',
  39   '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',
  40   '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',
  41   '\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047',
  42   '\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057',
  43   '\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067',
  44   '\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077',
  45   '\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
  46   '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
  47   '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
  48   '\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137',
  49   '\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
  50   '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
  51   '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
  52   '\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177',
  53   '\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207',
  54   '\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217',
  55   '\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227',
  56   '\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237',
  57   '\240', '\241', '\242', '\243', '\244', '\245', '\250', '\247',
  58   '\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257',
  59   '\260', '\261', '\262', '\263', '\270', '\265', '\266', '\267',
  60   '\270', '\271', '\272', '\273', '\275', '\275', '\377', '\277',
  61   '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
  62   '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
  63   '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\327',
  64   '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\337',
  65   '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
  66   '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
  67   '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
  68   '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377'
  69 };
  70
  71 static const unsigned short EncISO_8859_15_CtypeTable[256] = {
  72   0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008,
  73   0x4008, 0x420c, 0x4209, 0x4208, 0x4208, 0x4208, 0x4008, 0x4008,
  74   0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008,
  75   0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008,
  76   0x4284, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0,
  77   0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0,
  78   0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0,
  79   0x78b0, 0x78b0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0,
  80   0x41a0, 0x7ca2, 0x7ca2, 0x7ca2, 0x7ca2, 0x7ca2, 0x7ca2, 0x74a2,
  81   0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2,
  82   0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2,
  83   0x74a2, 0x74a2, 0x74a2, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x51a0,
  84   0x41a0, 0x78e2, 0x78e2, 0x78e2, 0x78e2, 0x78e2, 0x78e2, 0x70e2,
  85   0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2,
  86   0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2,
  87   0x70e2, 0x70e2, 0x70e2, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x4008,
  88   0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008,
  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   0x0284, 0x01a0, 0x00a0, 0x00a0, 0x00a0, 0x00a0, 0x34a2, 0x00a0,
  93   0x30e2, 0x00a0, 0x30e2, 0x01a0, 0x00a0, 0x01a0, 0x00a0, 0x00a0,
  94   0x00a0, 0x00a0, 0x10a0, 0x10a0, 0x34a2, 0x30e2, 0x00a0, 0x01a0,
  95   0x30e2, 0x10a0, 0x30e2, 0x01a0, 0x34a2, 0x30e2, 0x34a2, 0x01a0,
  96   0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2,
  97   0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2,
  98   0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x00a0,
  99   0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x30e2,
 100   0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2,
 101   0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2,
 102   0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x00a0,
 103   0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2
 104 };
 105
 106 static int
 107 mbc_case_fold(OnigCaseFoldType flag,
 108                           const UChar** pp, const UChar* end ARG_UNUSED,
 109                           UChar* lower, OnigEncoding enc ARG_UNUSED)
 110 {
 111   const UChar* p = *pp;
 112
 113   if (*p == 0xdf && (flag & INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR) != 0) {
 114     *lower++ = 's';
 115     *lower   = 's';
 116     (*pp)++;
 117     return 2;
 118   }
 119
 120   *lower = ENC_ISO_8859_15_TO_LOWER_CASE(*p);
 121   (*pp)++;
 122   return 1; /* return byte length of converted char to lower */
 123 }
 124
 125 #if 0
 126 static int
 127 is_mbc_ambiguous(OnigCaseFoldType flag,
 128                  const UChar** pp, const UChar* end)
 129 {
 130   int v;
 131   const UChar* p = *pp;
 132
 133   if (*p == 0xdf && (flag & INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR) != 0) {
 134     (*pp)++;
 135     return TRUE;
 136   }
 137
 138   (*pp)++;
 139   v = (EncISO_8859_15_CtypeTable[*p] & (BIT_CTYPE_UPPER | BIT_CTYPE_LOWER));
 140   if ((v | BIT_CTYPE_LOWER) != 0) {
 141     /* 0xdf etc.. are lower case letter, but can't convert. */
 142     if (*p == 0xaa || *p == 0xb5 || *p == 0xba)
 143       return FALSE;
 144     else
 145       return TRUE;
 146   }
 147
 148   return (v != 0 ? TRUE : FALSE);
 149 }
 150 #endif
 151
 152 static int
 153 is_code_ctype(OnigCodePoint code, unsigned int ctype, OnigEncoding enc ARG_UNUSED)
 154 {
 155   if (code < 256)
 156     return ENC_IS_ISO_8859_15_CTYPE(code, ctype);
 157   else
 158     return FALSE;
 159 }
 160
 161 static const OnigPairCaseFoldCodes CaseFoldMap[] = {
 162  { 0xa6, 0xa8 },
 163
 164  { 0xb4, 0xb8 },
 165  { 0xbc, 0xbd },
 166  { 0xbe, 0xff },
 167
 168  { 0xc0, 0xe0 },
 169  { 0xc1, 0xe1 },
 170  { 0xc2, 0xe2 },
 171  { 0xc3, 0xe3 },
 172  { 0xc4, 0xe4 },
 173  { 0xc5, 0xe5 },
 174  { 0xc6, 0xe6 },
 175  { 0xc7, 0xe7 },
 176  { 0xc8, 0xe8 },
 177  { 0xc9, 0xe9 },
 178  { 0xca, 0xea },
 179  { 0xcb, 0xeb },
 180  { 0xcc, 0xec },
 181  { 0xcd, 0xed },
 182  { 0xce, 0xee },
 183  { 0xcf, 0xef },
 184
 185  { 0xd0, 0xf0 },
 186  { 0xd1, 0xf1 },
 187  { 0xd2, 0xf2 },
 188  { 0xd3, 0xf3 },
 189  { 0xd4, 0xf4 },
 190  { 0xd5, 0xf5 },
 191  { 0xd6, 0xf6 },
 192  { 0xd8, 0xf8 },
 193  { 0xd9, 0xf9 },
 194  { 0xda, 0xfa },
 195  { 0xdb, 0xfb },
 196  { 0xdc, 0xfc },
 197  { 0xdd, 0xfd },
 198  { 0xde, 0xfe }
 199 };
 200
 201 static int
 202 apply_all_case_fold(OnigCaseFoldType flag,
 203                                 OnigApplyAllCaseFoldFunc f, void* arg,
 204                                 OnigEncoding enc ARG_UNUSED)
 205 {
 206   return onigenc_apply_all_case_fold_with_map(
 207              sizeof(CaseFoldMap)/sizeof(OnigPairCaseFoldCodes), CaseFoldMap, 1,
 208              flag, f, arg);
 209 }
 210
 211 static int
 212 get_case_fold_codes_by_str(OnigCaseFoldType flag,
 213                                        const OnigUChar* p, const OnigUChar* end,
 214                                        OnigCaseFoldCodeItem items[],
 215                                        OnigEncoding enc ARG_UNUSED)
 216 {
 217   return onigenc_get_case_fold_codes_by_str_with_map(
 218              sizeof(CaseFoldMap)/sizeof(OnigPairCaseFoldCodes), CaseFoldMap, 1,
 219              flag, p, end, items);
 220 }
 221
 222 OnigEncodingDefine(iso_8859_15, ISO_8859_15) = {
 223   onigenc_single_byte_mbc_enc_len,
 224   "ISO-8859-15",  /* name */
 225   1,             /* max enc length */
 226   1,             /* min enc length */
 227   onigenc_is_mbc_newline_0x0a,
 228   onigenc_single_byte_mbc_to_code,
 229   onigenc_single_byte_code_to_mbclen,
 230   onigenc_single_byte_code_to_mbc,
 231   mbc_case_fold,
 232   apply_all_case_fold,
 233   get_case_fold_codes_by_str,
 234   onigenc_minimum_property_name_to_ctype,
 235   is_code_ctype,
 236   onigenc_not_support_get_ctype_code_range,
 237   onigenc_single_byte_left_adjust_char_head,
 238   onigenc_always_true_is_allowed_reverse_match
 239 };
 240 ENC_ALIAS("ISO8859-15", "ISO-8859-15");