1 /**********************************************************************
2 koi8.c - Oniguruma (regular expression library)
3 **********************************************************************/
4 /*-
5 * Copyright (c) 2002-2020 K.Kosako
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
koi8_mbc_case_fold(OnigCaseFoldType flag,const UChar ** pp,const UChar * end ARG_UNUSED,UChar * lower)108 koi8_mbc_case_fold(OnigCaseFoldType flag,
109 const UChar** pp, const UChar* end ARG_UNUSED, UChar* lower)
110 {
111 const UChar* p = *pp;
112
113 if (CASE_FOLD_IS_NOT_ASCII_ONLY(flag) || ONIGENC_IS_ASCII_CODE(*p))
114 *lower = ENC_KOI8_TO_LOWER_CASE(*p);
115 else
116 *lower = *p;
117
118 (*pp)++;
119 return 1;
120 }
121
122 static int
koi8_is_code_ctype(OnigCodePoint code,unsigned int ctype)123 koi8_is_code_ctype(OnigCodePoint code, unsigned int ctype)
124 {
125 if (code < 256)
126 return ENC_IS_KOI8_CTYPE(code, ctype);
127 else
128 return FALSE;
129 }
130
131 static const OnigPairCaseFoldCodes CaseFoldMap[] = {
132 { 0xc0, 0xe0 },
133 { 0xc1, 0xe1 },
134 { 0xc2, 0xe2 },
135 { 0xc3, 0xe3 },
136 { 0xc4, 0xe4 },
137 { 0xc5, 0xe5 },
138 { 0xc6, 0xe6 },
139 { 0xc7, 0xe7 },
140 { 0xc8, 0xe8 },
141 { 0xc9, 0xe9 },
142 { 0xca, 0xea },
143 { 0xcb, 0xeb },
144 { 0xcc, 0xec },
145 { 0xcd, 0xed },
146 { 0xce, 0xee },
147 { 0xcf, 0xef },
148
149 { 0xd0, 0xf0 },
150 { 0xd1, 0xf1 },
151 { 0xd2, 0xf2 },
152 { 0xd3, 0xf3 },
153 { 0xd4, 0xf4 },
154 { 0xd5, 0xf5 },
155 { 0xd6, 0xf6 },
156 { 0xd7, 0xf7 },
157 { 0xd8, 0xf8 },
158 { 0xd9, 0xf9 },
159 { 0xda, 0xfa },
160 { 0xdb, 0xfb },
161 { 0xdc, 0xfc },
162 { 0xdd, 0xfd },
163 { 0xde, 0xfe },
164 { 0xdf, 0xff },
165
166 { 0xe0, 0xc0 },
167 { 0xe1, 0xc1 },
168 { 0xe2, 0xc2 },
169 { 0xe3, 0xc3 },
170 { 0xe4, 0xc4 },
171 { 0xe5, 0xc5 },
172 { 0xe6, 0xc6 },
173 { 0xe7, 0xc7 },
174 { 0xe8, 0xc8 },
175 { 0xe9, 0xc9 },
176 { 0xea, 0xca },
177 { 0xeb, 0xcb },
178 { 0xec, 0xcc },
179 { 0xed, 0xcd },
180 { 0xee, 0xce },
181 { 0xef, 0xcf },
182
183 { 0xf0, 0xd0 },
184 { 0xf1, 0xd1 },
185 { 0xf2, 0xd2 },
186 { 0xf3, 0xd3 },
187 { 0xf4, 0xd4 },
188 { 0xf5, 0xd5 },
189 { 0xf6, 0xd6 },
190 { 0xf7, 0xd7 },
191 { 0xf8, 0xd8 },
192 { 0xf9, 0xd9 },
193 { 0xfa, 0xda },
194 { 0xfb, 0xdb },
195 { 0xfc, 0xdc },
196 { 0xfe, 0xde },
197 { 0xff, 0xdf }
198 };
199
200 static int
koi8_apply_all_case_fold(OnigCaseFoldType flag,OnigApplyAllCaseFoldFunc f,void * arg)201 koi8_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, 0,
206 flag, f, arg);
207 }
208
209 static int
koi8_get_case_fold_codes_by_str(OnigCaseFoldType flag,const OnigUChar * p,const OnigUChar * end,OnigCaseFoldCodeItem items[])210 koi8_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, 0,
215 flag, p, end, items);
216 }
217
218 OnigEncodingType OnigEncodingKOI8 = {
219 onigenc_single_byte_mbc_enc_len,
220 "KOI8", /* 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 koi8_mbc_case_fold,
228 koi8_apply_all_case_fold,
229 koi8_get_case_fold_codes_by_str,
230 onigenc_minimum_property_name_to_ctype,
231 koi8_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 NULL, /* init */
236 NULL, /* is_initialized */
237 onigenc_always_true_is_valid_mbc_string,
238 ENC_FLAG_ASCII_COMPATIBLE|ENC_FLAG_SKIP_OFFSET_1,
239 0, 0
240 };
241