root/ext/mbstring/oniguruma/enc/koi8.c

DEFINITIONS

1. koi8_mbc_case_fold
2. koi8_is_mbc_ambiguous
3. koi8_is_code_ctype
4. koi8_apply_all_case_fold
5. koi8_get_case_fold_codes_by_str

   1 /**********************************************************************
   2   koi8.c -  Oniguruma (regular expression library)
   3 **********************************************************************/
   4 /*-
   5  * Copyright (c) 2002-2008  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_KOI8_TO_LOWER_CASE(c) EncKOI8_ToLowerCaseTable[c]
  33 #define ENC_IS_KOI8_CTYPE(code,ctype) \
  34   ((EncKOI8_CtypeTable[code] & CTYPE_TO_BIT(ctype)) != 0)
  35 
  36 static const UChar EncKOI8_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   '\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257',
  59   '\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267',
  60   '\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277',
  61   '\300', '\301', '\302', '\303', '\304', '\305', '\306', '\307',
  62   '\310', '\311', '\312', '\313', '\314', '\315', '\316', '\317',
  63   '\320', '\321', '\322', '\323', '\324', '\325', '\326', '\327',
  64   '\330', '\331', '\332', '\333', '\334', '\335', '\336', '\337',
  65   '\300', '\301', '\302', '\303', '\304', '\305', '\306', '\307',
  66   '\310', '\311', '\312', '\313', '\314', '\315', '\316', '\317',
  67   '\320', '\321', '\322', '\323', '\324', '\325', '\326', '\327',
  68   '\330', '\331', '\332', '\333', '\334', '\335', '\336', '\337'
  69 };
  70 
  71 static const unsigned short EncKOI8_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, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
  93   0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
  94   0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
  95   0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
  96   0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2,
  97   0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2,
  98   0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2,
  99   0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2,
 100   0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2,
 101   0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2,
 102   0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2,
 103   0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2
 104 };
 105 
 106 
 107 static int
 108 koi8_mbc_case_fold(OnigCaseFoldType flag ARG_UNUSED,
 109            const UChar** pp, const UChar* end ARG_UNUSED, UChar* lower)
 110 {
 111   const UChar* p = *pp;
 112 
 113   *lower = ENC_KOI8_TO_LOWER_CASE(*p);
 114   (*pp)++;
 115   return 1;
 116 }
 117 
 118 #if 0
 119 static int
 120 koi8_is_mbc_ambiguous(OnigAmbigType flag, const OnigUChar** pp, const OnigUChar* end)
 121 {
 122   const OnigUChar* p = *pp;
 123 
 124   (*pp)++;
 125   if (((flag & ONIGENC_CASE_FOLD_ASCII_CASE) != 0 &&
 126        ONIGENC_IS_MBC_ASCII(p)) ||
 127       ((flag & ONIGENC_CASE_FOLD_NONASCII_CASE) != 0 &&
 128        !ONIGENC_IS_MBC_ASCII(p))) {
 129     int v = (EncKOI8_CtypeTable[*p] &
 130              (BIT_CTYPE_UPPER | BIT_CTYPE_LOWER));
 131     return (v != 0 ? TRUE : FALSE);
 132   }
 133   return FALSE;
 134 }
 135 #endif
 136 
 137 static int
 138 koi8_is_code_ctype(OnigCodePoint code, unsigned int ctype)
 139 {
 140   if (code < 256)
 141     return ENC_IS_KOI8_CTYPE(code, ctype);
 142   else
 143     return FALSE;
 144 }
 145 
 146 static const OnigPairCaseFoldCodes CaseFoldMap[] = {
 147  { 0xc0, 0xe0 },
 148  { 0xc1, 0xe1 },
 149  { 0xc2, 0xe2 },
 150  { 0xc3, 0xe3 },
 151  { 0xc4, 0xe4 },
 152  { 0xc5, 0xe5 },
 153  { 0xc6, 0xe6 },
 154  { 0xc7, 0xe7 },
 155  { 0xc8, 0xe8 },
 156  { 0xc9, 0xe9 },
 157  { 0xca, 0xea },
 158  { 0xcb, 0xeb },
 159  { 0xcc, 0xec },
 160  { 0xcd, 0xed },
 161  { 0xce, 0xee },
 162  { 0xcf, 0xef },
 163 
 164  { 0xd0, 0xf0 },
 165  { 0xd1, 0xf1 },
 166  { 0xd2, 0xf2 },
 167  { 0xd3, 0xf3 },
 168  { 0xd4, 0xf4 },
 169  { 0xd5, 0xf5 },
 170  { 0xd6, 0xf6 },
 171  { 0xd7, 0xf7 },
 172  { 0xd8, 0xf8 },
 173  { 0xd9, 0xf9 },
 174  { 0xda, 0xfa },
 175  { 0xdb, 0xfb },
 176  { 0xdc, 0xfc },
 177  { 0xdd, 0xfd },
 178  { 0xde, 0xfe },
 179  { 0xdf, 0xff },
 180 
 181  { 0xe0, 0xc0 },
 182  { 0xe1, 0xc1 },
 183  { 0xe2, 0xc2 },
 184  { 0xe3, 0xc3 },
 185  { 0xe4, 0xc4 },
 186  { 0xe5, 0xc5 },
 187  { 0xe6, 0xc6 },
 188  { 0xe7, 0xc7 },
 189  { 0xe8, 0xc8 },
 190  { 0xe9, 0xc9 },
 191  { 0xea, 0xca },
 192  { 0xeb, 0xcb },
 193  { 0xec, 0xcc },
 194  { 0xed, 0xcd },
 195  { 0xee, 0xce },
 196  { 0xef, 0xcf },
 197 
 198  { 0xf0, 0xd0 },
 199  { 0xf1, 0xd1 },
 200  { 0xf2, 0xd2 },
 201  { 0xf3, 0xd3 },
 202  { 0xf4, 0xd4 },
 203  { 0xf5, 0xd5 },
 204  { 0xf6, 0xd6 },
 205  { 0xf7, 0xd7 },
 206  { 0xf8, 0xd8 },
 207  { 0xf9, 0xd9 },
 208  { 0xfa, 0xda },
 209  { 0xfb, 0xdb },
 210  { 0xfc, 0xdc },
 211  { 0xfe, 0xde },
 212  { 0xff, 0xdf }
 213 };
 214 
 215 static int
 216 koi8_apply_all_case_fold(OnigCaseFoldType flag,
 217                          OnigApplyAllCaseFoldFunc f, void* arg)
 218 {
 219   return onigenc_apply_all_case_fold_with_map(
 220              sizeof(CaseFoldMap)/sizeof(OnigPairCaseFoldCodes), CaseFoldMap, 0,
 221              flag, f, arg);
 222 }
 223 
 224 static int
 225 koi8_get_case_fold_codes_by_str(OnigCaseFoldType flag,
 226     const OnigUChar* p, const OnigUChar* end, OnigCaseFoldCodeItem items[])
 227 {
 228   return onigenc_get_case_fold_codes_by_str_with_map(
 229              sizeof(CaseFoldMap)/sizeof(OnigPairCaseFoldCodes), CaseFoldMap, 0,
 230              flag, p, end, items);
 231 }
 232 
 233 OnigEncodingType OnigEncodingKOI8 = {
 234   onigenc_single_byte_mbc_enc_len,
 235   "KOI8",        /* name */
 236   1,             /* max enc length */
 237   1,             /* min enc length */
 238   onigenc_is_mbc_newline_0x0a,
 239   onigenc_single_byte_mbc_to_code,
 240   onigenc_single_byte_code_to_mbclen,
 241   onigenc_single_byte_code_to_mbc,
 242   koi8_mbc_case_fold,
 243   koi8_apply_all_case_fold,
 244   koi8_get_case_fold_codes_by_str,
 245   onigenc_minimum_property_name_to_ctype,
 246   koi8_is_code_ctype,
 247   onigenc_not_support_get_ctype_code_range,
 248   onigenc_single_byte_left_adjust_char_head,
 249   onigenc_always_true_is_allowed_reverse_match
 250 };