root/ext/mbstring/oniguruma/enc/iso8859_15.c

DEFINITIONS

1. mbc_case_fold
2. is_mbc_ambiguous
3. is_code_ctype
4. apply_all_case_fold
5. get_case_fold_codes_by_str

   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, UChar* lower)
 109 {
 110   const UChar* p = *pp;
 111 
 112   if (*p == 0xdf && (flag & INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR) != 0) {
 113     *lower++ = 's';
 114     *lower   = 's';
 115     (*pp)++;
 116     return 2;
 117   }
 118 
 119   *lower = ENC_ISO_8859_15_TO_LOWER_CASE(*p);
 120   (*pp)++;
 121   return 1; /* return byte length of converted char to lower */
 122 }
 123 
 124 #if 0
 125 static int
 126 is_mbc_ambiguous(OnigCaseFoldType flag,
 127                  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_15_CtypeTable[*p] & (BIT_CTYPE_UPPER | BIT_CTYPE_LOWER));
 139   if ((v | BIT_CTYPE_LOWER) != 0) {
 140     /* 0xdf etc.. are lower case letter, but can't convert. */
 141     if (*p == 0xaa || *p == 0xb5 || *p == 0xba)
 142       return FALSE;
 143     else
 144       return TRUE;
 145   }
 146 
 147   return (v != 0 ? TRUE : FALSE);
 148 }
 149 #endif
 150 
 151 static int
 152 is_code_ctype(OnigCodePoint code, unsigned int ctype)
 153 {
 154   if (code < 256)
 155     return ENC_IS_ISO_8859_15_CTYPE(code, ctype);
 156   else
 157     return FALSE;
 158 }
 159 
 160 static const OnigPairCaseFoldCodes CaseFoldMap[] = {
 161  { 0xa6, 0xa8 },
 162 
 163  { 0xb4, 0xb8 },
 164  { 0xbc, 0xbd },
 165  { 0xbe, 0xff },
 166 
 167  { 0xc0, 0xe0 },
 168  { 0xc1, 0xe1 },
 169  { 0xc2, 0xe2 },
 170  { 0xc3, 0xe3 },
 171  { 0xc4, 0xe4 },
 172  { 0xc5, 0xe5 },
 173  { 0xc6, 0xe6 },
 174  { 0xc7, 0xe7 },
 175  { 0xc8, 0xe8 },
 176  { 0xc9, 0xe9 },
 177  { 0xca, 0xea },
 178  { 0xcb, 0xeb },
 179  { 0xcc, 0xec },
 180  { 0xcd, 0xed },
 181  { 0xce, 0xee },
 182  { 0xcf, 0xef },
 183 
 184  { 0xd0, 0xf0 },
 185  { 0xd1, 0xf1 },
 186  { 0xd2, 0xf2 },
 187  { 0xd3, 0xf3 },
 188  { 0xd4, 0xf4 },
 189  { 0xd5, 0xf5 },
 190  { 0xd6, 0xf6 },
 191  { 0xd8, 0xf8 },
 192  { 0xd9, 0xf9 },
 193  { 0xda, 0xfa },
 194  { 0xdb, 0xfb },
 195  { 0xdc, 0xfc },
 196  { 0xdd, 0xfd },
 197  { 0xde, 0xfe }
 198 };
 199 
 200 static int
 201 apply_all_case_fold(OnigCaseFoldType flag,
 202                     OnigApplyAllCaseFoldFunc f, void* arg)
 203 {
 204   return onigenc_apply_all_case_fold_with_map(
 205              sizeof(CaseFoldMap)/sizeof(OnigPairCaseFoldCodes), CaseFoldMap, 1,
 206              flag, f, arg);
 207 }
 208 
 209 static int
 210 get_case_fold_codes_by_str(OnigCaseFoldType flag,
 211     const OnigUChar* p, const OnigUChar* end, OnigCaseFoldCodeItem items[])
 212 {
 213   return onigenc_get_case_fold_codes_by_str_with_map(
 214              sizeof(CaseFoldMap)/sizeof(OnigPairCaseFoldCodes), CaseFoldMap, 1,
 215              flag, p, end, items);
 216 }
 217 
 218 OnigEncodingType OnigEncodingISO_8859_15 = {
 219   onigenc_single_byte_mbc_enc_len,
 220   "ISO-8859-15",  /* name */
 221   1,             /* max enc length */
 222   1,             /* min enc length */
 223   onigenc_is_mbc_newline_0x0a,
 224   onigenc_single_byte_mbc_to_code,
 225   onigenc_single_byte_code_to_mbclen,
 226   onigenc_single_byte_code_to_mbc,
 227   mbc_case_fold,
 228   apply_all_case_fold,
 229   get_case_fold_codes_by_str,
 230   onigenc_minimum_property_name_to_ctype,
 231   is_code_ctype,
 232   onigenc_not_support_get_ctype_code_range,
 233   onigenc_single_byte_left_adjust_char_head,
 234   onigenc_always_true_is_allowed_reverse_match
 235 };