root/ext/mbstring/oniguruma/enc/iso8859_13.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_13.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_13_TO_LOWER_CASE(c) EncISO_8859_13_ToLowerCaseTable[c]
  33 #define ENC_IS_ISO_8859_13_CTYPE(code,ctype) \
  34   ((EncISO_8859_13_CtypeTable[code] & CTYPE_TO_BIT(ctype)) != 0)
  35 
  36 static const UChar EncISO_8859_13_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', '\246', '\247',
  58   '\270', '\251', '\272', '\253', '\254', '\255', '\256', '\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', '\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_13_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, 0x01a0, 0x00a0, 0x00a0,
  93   0x34a2, 0x00a0, 0x34a2, 0x01a0, 0x00a0, 0x01a0, 0x00a0, 0x34a2,
  94   0x00a0, 0x00a0, 0x10a0, 0x10a0, 0x01a0, 0x30e2, 0x00a0, 0x01a0,
  95   0x30e2, 0x10a0, 0x30e2, 0x01a0, 0x10a0, 0x10a0, 0x10a0, 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, 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, 0x01a0
 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_13_TO_LOWER_CASE(*p);
 120   (*pp)++;
 121   return 1;
 122 }
 123 
 124 #if 0
 125 static int
 126 is_mbc_ambiguous(OnigCaseFoldType flag, const UChar** pp, const UChar* end)
 127 {
 128   int v;
 129   const UChar* p = *pp;
 130 
 131   if (*p == 0xdf && (flag & INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR) != 0) {
 132     (*pp)++;
 133     return TRUE;
 134   }
 135 
 136   (*pp)++;
 137   v = (EncISO_8859_13_CtypeTable[*p] & (BIT_CTYPE_UPPER | BIT_CTYPE_LOWER));
 138   if ((v | BIT_CTYPE_LOWER) != 0) {
 139     /* 0xdf, 0xb5 are lower case letter, but can't convert. */
 140     if (*p == 0xb5)
 141       return FALSE;
 142     else
 143       return TRUE;
 144   }
 145 
 146   return (v != 0 ? TRUE : FALSE);
 147 }
 148 #endif
 149 
 150 static int
 151 is_code_ctype(OnigCodePoint code, unsigned int ctype)
 152 {
 153   if (code < 256)
 154     return ENC_IS_ISO_8859_13_CTYPE(code, ctype);
 155   else
 156     return FALSE;
 157 }
 158 
 159 static const OnigPairCaseFoldCodes CaseFoldMap[] = {
 160  { 0xc0, 0xe0 },
 161  { 0xc1, 0xe1 },
 162  { 0xc2, 0xe2 },
 163  { 0xc3, 0xe3 },
 164  { 0xc4, 0xe4 },
 165  { 0xc5, 0xe5 },
 166  { 0xc6, 0xe6 },
 167  { 0xc7, 0xe7 },
 168  { 0xc8, 0xe8 },
 169  { 0xc9, 0xe9 },
 170  { 0xca, 0xea },
 171  { 0xcb, 0xeb },
 172  { 0xcc, 0xec },
 173  { 0xcd, 0xed },
 174  { 0xce, 0xee },
 175  { 0xcf, 0xef },
 176 
 177  { 0xd0, 0xf0 },
 178  { 0xd1, 0xf1 },
 179  { 0xd2, 0xf2 },
 180  { 0xd3, 0xf3 },
 181  { 0xd4, 0xf4 },
 182  { 0xd5, 0xf5 },
 183  { 0xd6, 0xf6 },
 184  { 0xd8, 0xf8 },
 185  { 0xd9, 0xf9 },
 186  { 0xda, 0xfa },
 187  { 0xdb, 0xfb },
 188  { 0xdc, 0xfc },
 189  { 0xdd, 0xfd },
 190  { 0xde, 0xfe }
 191 };
 192 
 193 static int
 194 apply_all_case_fold(OnigCaseFoldType flag,
 195                     OnigApplyAllCaseFoldFunc f, void* arg)
 196 {
 197   return onigenc_apply_all_case_fold_with_map(
 198              sizeof(CaseFoldMap)/sizeof(OnigPairCaseFoldCodes), CaseFoldMap, 1,
 199              flag, f, arg);
 200 }
 201 
 202 static int
 203 get_case_fold_codes_by_str(OnigCaseFoldType flag,
 204    const OnigUChar* p, const OnigUChar* end, OnigCaseFoldCodeItem items[])
 205 {
 206   return onigenc_get_case_fold_codes_by_str_with_map(
 207              sizeof(CaseFoldMap)/sizeof(OnigPairCaseFoldCodes), CaseFoldMap, 1,
 208              flag, p, end, items);
 209 }
 210 
 211 OnigEncodingType OnigEncodingISO_8859_13 = {
 212   onigenc_single_byte_mbc_enc_len,
 213   "ISO-8859-13",  /* name */
 214   1,             /* max enc length */
 215   1,             /* min enc length */
 216   onigenc_is_mbc_newline_0x0a,
 217   onigenc_single_byte_mbc_to_code,
 218   onigenc_single_byte_code_to_mbclen,
 219   onigenc_single_byte_code_to_mbc,
 220   mbc_case_fold,
 221   apply_all_case_fold,
 222   get_case_fold_codes_by_str,
 223   onigenc_minimum_property_name_to_ctype,
 224   is_code_ctype,
 225   onigenc_not_support_get_ctype_code_range,
 226   onigenc_single_byte_left_adjust_char_head,
 227   onigenc_always_true_is_allowed_reverse_match
 228 };