1 /**********************************************************************
2 koi8.c - Oniguruma (regular expression library)
3 **********************************************************************/
4 /*-
5 * Copyright (c) 2002-2004 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) != 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 0x2008, 0x2008, 0x2008, 0x2008, 0x2008, 0x2008, 0x2008, 0x2008,
73 0x2008, 0x220c, 0x2209, 0x2208, 0x2208, 0x2208, 0x2008, 0x2008,
74 0x2008, 0x2008, 0x2008, 0x2008, 0x2008, 0x2008, 0x2008, 0x2008,
75 0x2008, 0x2008, 0x2008, 0x2008, 0x2008, 0x2008, 0x2008, 0x2008,
76 0x2284, 0x21a0, 0x21a0, 0x21a0, 0x21a0, 0x21a0, 0x21a0, 0x21a0,
77 0x21a0, 0x21a0, 0x21a0, 0x21a0, 0x21a0, 0x21a0, 0x21a0, 0x21a0,
78 0x38b0, 0x38b0, 0x38b0, 0x38b0, 0x38b0, 0x38b0, 0x38b0, 0x38b0,
79 0x38b0, 0x38b0, 0x21a0, 0x21a0, 0x21a0, 0x21a0, 0x21a0, 0x21a0,
80 0x21a0, 0x3ca2, 0x3ca2, 0x3ca2, 0x3ca2, 0x3ca2, 0x3ca2, 0x34a2,
81 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2,
82 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2,
83 0x34a2, 0x34a2, 0x34a2, 0x21a0, 0x21a0, 0x21a0, 0x21a0, 0x31a0,
84 0x21a0, 0x38e2, 0x38e2, 0x38e2, 0x38e2, 0x38e2, 0x38e2, 0x30e2,
85 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2,
86 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2,
87 0x30e2, 0x30e2, 0x30e2, 0x21a0, 0x21a0, 0x21a0, 0x21a0, 0x2008,
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 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x10e2,
97 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x10e2,
98 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x10e2,
99 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x10e2,
100 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x14a2,
101 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x14a2,
102 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x14a2,
103 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x14a2
104 };
105
106 static int
koi8_mbc_to_normalize(OnigAmbigType flag,const OnigUChar ** pp,const OnigUChar * end,OnigUChar * lower)107 koi8_mbc_to_normalize(OnigAmbigType flag,
108 const OnigUChar** pp, const OnigUChar* end, OnigUChar* lower)
109 {
110 const OnigUChar* p = *pp;
111
112 if (((flag & ONIGENC_AMBIGUOUS_MATCH_ASCII_CASE) != 0 &&
113 ONIGENC_IS_MBC_ASCII(p)) ||
114 ((flag & ONIGENC_AMBIGUOUS_MATCH_NONASCII_CASE) != 0 &&
115 !ONIGENC_IS_MBC_ASCII(p))) {
116 *lower = ENC_KOI8_TO_LOWER_CASE(*p);
117 }
118 else {
119 *lower = *p;
120 }
121 (*pp)++;
122 return 1; /* return byte length of converted char to lower */
123 }
124
125 static int
koi8_is_mbc_ambiguous(OnigAmbigType flag,const OnigUChar ** pp,const OnigUChar * end)126 koi8_is_mbc_ambiguous(OnigAmbigType flag, const OnigUChar** pp, const OnigUChar* end)
127 {
128 const OnigUChar* p = *pp;
129
130 (*pp)++;
131 if (((flag & ONIGENC_AMBIGUOUS_MATCH_ASCII_CASE) != 0 &&
132 ONIGENC_IS_MBC_ASCII(p)) ||
133 ((flag & ONIGENC_AMBIGUOUS_MATCH_NONASCII_CASE) != 0 &&
134 !ONIGENC_IS_MBC_ASCII(p))) {
135 int v = (EncKOI8_CtypeTable[*p] &
136 (ONIGENC_CTYPE_UPPER | ONIGENC_CTYPE_LOWER));
137 return (v != 0 ? TRUE : FALSE);
138 }
139 return FALSE;
140 }
141
142
143 static int
koi8_is_code_ctype(OnigCodePoint code,unsigned int ctype)144 koi8_is_code_ctype(OnigCodePoint code, unsigned int ctype)
145 {
146 if (code < 256)
147 return ENC_IS_KOI8_CTYPE(code, ctype);
148 else
149 return FALSE;
150 }
151
152 static int
koi8_get_all_pair_ambig_codes(OnigAmbigType flag,const OnigPairAmbigCodes ** ccs)153 koi8_get_all_pair_ambig_codes(OnigAmbigType flag,
154 const OnigPairAmbigCodes** ccs)
155 {
156 static const OnigPairAmbigCodes cc[] = {
157 { 0xc0, 0xe0 },
158 { 0xc1, 0xe1 },
159 { 0xc2, 0xe2 },
160 { 0xc3, 0xe3 },
161 { 0xc4, 0xe4 },
162 { 0xc5, 0xe5 },
163 { 0xc6, 0xe6 },
164 { 0xc7, 0xe7 },
165 { 0xc8, 0xe8 },
166 { 0xc9, 0xe9 },
167 { 0xca, 0xea },
168 { 0xcb, 0xeb },
169 { 0xcc, 0xec },
170 { 0xcd, 0xed },
171 { 0xce, 0xee },
172 { 0xcf, 0xef },
173
174 { 0xd0, 0xf0 },
175 { 0xd1, 0xf1 },
176 { 0xd2, 0xf2 },
177 { 0xd3, 0xf3 },
178 { 0xd4, 0xf4 },
179 { 0xd5, 0xf5 },
180 { 0xd6, 0xf6 },
181 { 0xd7, 0xf7 },
182 { 0xd8, 0xf8 },
183 { 0xd9, 0xf9 },
184 { 0xda, 0xfa },
185 { 0xdb, 0xfb },
186 { 0xdc, 0xfc },
187 { 0xdd, 0xfd },
188 { 0xde, 0xfe },
189 { 0xdf, 0xff },
190
191 { 0xe0, 0xc0 },
192 { 0xe1, 0xc1 },
193 { 0xe2, 0xc2 },
194 { 0xe3, 0xc3 },
195 { 0xe4, 0xc4 },
196 { 0xe5, 0xc5 },
197 { 0xe6, 0xc6 },
198 { 0xe7, 0xc7 },
199 { 0xe8, 0xc8 },
200 { 0xe9, 0xc9 },
201 { 0xea, 0xca },
202 { 0xeb, 0xcb },
203 { 0xec, 0xcc },
204 { 0xed, 0xcd },
205 { 0xee, 0xce },
206 { 0xef, 0xcf },
207
208 { 0xf0, 0xd0 },
209 { 0xf1, 0xd1 },
210 { 0xf2, 0xd2 },
211 { 0xf3, 0xd3 },
212 { 0xf4, 0xd4 },
213 { 0xf5, 0xd5 },
214 { 0xf6, 0xd6 },
215 { 0xf7, 0xd7 },
216 { 0xf8, 0xd8 },
217 { 0xf9, 0xd9 },
218 { 0xfa, 0xda },
219 { 0xfb, 0xdb },
220 { 0xfc, 0xdc },
221 { 0xfe, 0xde },
222 { 0xff, 0xdf }
223 };
224
225 if (flag == ONIGENC_AMBIGUOUS_MATCH_ASCII_CASE) {
226 *ccs = OnigAsciiPairAmbigCodes;
227 return 52;
228 }
229 if (flag == ONIGENC_AMBIGUOUS_MATCH_NONASCII_CASE) {
230 *ccs = cc;
231 return sizeof(cc) / sizeof(OnigPairAmbigCodes);
232 }
233 else
234 return 0;
235 }
236
237 OnigEncodingType OnigEncodingKOI8 = {
238 onigenc_single_byte_mbc_enc_len,
239 "KOI8", /* name */
240 1, /* max enc length */
241 1, /* min enc length */
242 (ONIGENC_AMBIGUOUS_MATCH_ASCII_CASE |
243 ONIGENC_AMBIGUOUS_MATCH_NONASCII_CASE ),
244 {
245 (OnigCodePoint )'\\' /* esc */
246 , (OnigCodePoint )ONIG_INEFFECTIVE_META_CHAR /* anychar '.' */
247 , (OnigCodePoint )ONIG_INEFFECTIVE_META_CHAR /* anytime '*' */
248 , (OnigCodePoint )ONIG_INEFFECTIVE_META_CHAR /* zero or one time '?' */
249 , (OnigCodePoint )ONIG_INEFFECTIVE_META_CHAR /* one or more time '+' */
250 , (OnigCodePoint )ONIG_INEFFECTIVE_META_CHAR /* anychar anytime */
251 },
252 onigenc_is_mbc_newline_0x0a,
253 onigenc_single_byte_mbc_to_code,
254 onigenc_single_byte_code_to_mbclen,
255 onigenc_single_byte_code_to_mbc,
256 koi8_mbc_to_normalize,
257 koi8_is_mbc_ambiguous,
258 koi8_get_all_pair_ambig_codes,
259 onigenc_nothing_get_all_comp_ambig_codes,
260 koi8_is_code_ctype,
261 onigenc_not_support_get_ctype_code_range,
262 onigenc_single_byte_left_adjust_char_head,
263 onigenc_always_true_is_allowed_reverse_match
264 };
265
