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
  32 #define ENC_ISO_8859_10_TO_LOWER_CASE(c) EncISO_8859_10_ToLowerCaseTable[c]
  33 #define ENC_IS_ISO_8859_10_CTYPE(code,ctype) \
  34   ((EncISO_8859_10_CtypeTable[code] & CTYPE_TO_BIT(ctype)) != 0)
  35
  36 static const UChar EncISO_8859_10_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', '\261', '\262', '\263', '\264', '\265', '\266', '\247',
  58   '\270', '\271', '\272', '\273', '\274', '\255', '\276', '\277',
  59   '\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267',
  60   '\270', '\271', '\272', '\273', '\274', '\275', '\276', '\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', '\367',
  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_10_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, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x00a0,
  93   0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x01a0, 0x34a2, 0x34a2,
  94   0x00a0, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x01a0,
  95   0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x01a0, 0x30e2, 0x30e2,
  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, 0x34a2,
  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, 0x30e2,
 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_10_TO_LOWER_CASE(*p);
 121   (*pp)++;
 122   return 1;
 123 }
 124
 125 #if 0
 126 static int
 127 is_mbc_ambiguous(OnigCaseFoldType flag, const UChar** pp, const UChar* end)
 128 {
 129   int v;
 130   const UChar* p = *pp;
 131
 132   if (*p == 0xdf && (flag & INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR) != 0) {
 133     (*pp)++;
 134     return TRUE;
 135   }
 136
 137   (*pp)++;
 138   v = (EncISO_8859_10_CtypeTable[*p] & (BIT_CTYPE_UPPER | BIT_CTYPE_LOWER));
 139   if ((v | BIT_CTYPE_LOWER) != 0) {
 140     return TRUE;
 141   }
 142
 143   return (v != 0 ? TRUE : FALSE);
 144 }
 145 #endif
 146
 147 static int
 148 is_code_ctype(OnigCodePoint code, unsigned int ctype, OnigEncoding enc ARG_UNUSED)
 149 {
 150   if (code < 256)
 151     return ENC_IS_ISO_8859_10_CTYPE(code, ctype);
 152   else
 153     return FALSE;
 154 }
 155
 156 static const OnigPairCaseFoldCodes CaseFoldMap[] = {
 157  { 0xa1, 0xb1 },
 158  { 0xa2, 0xb2 },
 159  { 0xa3, 0xb3 },
 160  { 0xa4, 0xb4 },
 161  { 0xa5, 0xb5 },
 162  { 0xa6, 0xb6 },
 163  { 0xa8, 0xb8 },
 164  { 0xa9, 0xb9 },
 165  { 0xaa, 0xba },
 166  { 0xab, 0xbb },
 167  { 0xac, 0xbc },
 168  { 0xae, 0xbe },
 169  { 0xaf, 0xbf },
 170
 171  { 0xc0, 0xe0 },
 172  { 0xc1, 0xe1 },
 173  { 0xc2, 0xe2 },
 174  { 0xc3, 0xe3 },
 175  { 0xc4, 0xe4 },
 176  { 0xc5, 0xe5 },
 177  { 0xc6, 0xe6 },
 178  { 0xc7, 0xe7 },
 179  { 0xc8, 0xe8 },
 180  { 0xc9, 0xe9 },
 181  { 0xca, 0xea },
 182  { 0xcb, 0xeb },
 183  { 0xcc, 0xec },
 184  { 0xcd, 0xed },
 185  { 0xce, 0xee },
 186  { 0xcf, 0xef },
 187
 188  { 0xd0, 0xf0 },
 189  { 0xd1, 0xf1 },
 190  { 0xd2, 0xf2 },
 191  { 0xd3, 0xf3 },
 192  { 0xd4, 0xf4 },
 193  { 0xd5, 0xf5 },
 194  { 0xd6, 0xf6 },
 195  { 0xd7, 0xf7 },
 196  { 0xd8, 0xf8 },
 197  { 0xd9, 0xf9 },
 198  { 0xda, 0xfa },
 199  { 0xdb, 0xfb },
 200  { 0xdc, 0xfc },
 201  { 0xdd, 0xfd },
 202  { 0xde, 0xfe }
 203 };
 204
 205 static int
 206 apply_all_case_fold(OnigCaseFoldType flag,
 207                                OnigApplyAllCaseFoldFunc f, void* arg,
 208                                OnigEncoding enc ARG_UNUSED)
 209 {
 210   return onigenc_apply_all_case_fold_with_map(
 211              sizeof(CaseFoldMap)/sizeof(OnigPairCaseFoldCodes), CaseFoldMap, 1,
 212              flag, f, arg);
 213 }
 214
 215 static int
 216 get_case_fold_codes_by_str(OnigCaseFoldType flag,
 217                                        const OnigUChar* p, const OnigUChar* end,
 218                                        OnigCaseFoldCodeItem items[],
 219                                        OnigEncoding enc ARG_UNUSED)
 220 {
 221   return onigenc_get_case_fold_codes_by_str_with_map(
 222              sizeof(CaseFoldMap)/sizeof(OnigPairCaseFoldCodes), CaseFoldMap, 1,
 223              flag, p, end, items);
 224 }
 225
 226 OnigEncodingDefine(iso_8859_10, ISO_8859_10) = {
 227   onigenc_single_byte_mbc_enc_len,
 228   "ISO-8859-10", /* name */
 229   1,             /* max enc length */
 230   1,             /* min enc length */
 231   onigenc_is_mbc_newline_0x0a,
 232   onigenc_single_byte_mbc_to_code,
 233   onigenc_single_byte_code_to_mbclen,
 234   onigenc_single_byte_code_to_mbc,
 235   mbc_case_fold,
 236   apply_all_case_fold,
 237   get_case_fold_codes_by_str,
 238   onigenc_minimum_property_name_to_ctype,
 239   is_code_ctype,
 240   onigenc_not_support_get_ctype_code_range,
 241   onigenc_single_byte_left_adjust_char_head,
 242   onigenc_always_true_is_allowed_reverse_match
 243 };
 244 ENC_ALIAS("ISO8859-10", "ISO-8859-10")