1 /**********************************************************************
2 iso8859_2.c - Oniguruma (regular expression library)
3 **********************************************************************/
4 /*-
5 * Copyright (c) 2002-2006 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_2_TO_LOWER_CASE(c) EncISO_8859_2_ToLowerCaseTable[c]
33 #define ENC_IS_ISO_8859_2_CTYPE(code,ctype) \
34 ((EncISO_8859_2_CtypeTable[code] & ctype) != 0)
35
36 static const UChar EncISO_8859_2_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', '\261', '\242', '\263', '\244', '\265', '\266', '\247',
58 '\250', '\271', '\272', '\273', '\274', '\255', '\276', '\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_2_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, 0x14a2, 0x00a0, 0x14a2, 0x00a0, 0x14a2, 0x14a2, 0x00a0,
93 0x00a0, 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x01a0, 0x14a2, 0x14a2,
94 0x00a0, 0x10e2, 0x00a0, 0x10e2, 0x00a0, 0x10e2, 0x10e2, 0x00a0,
95 0x00a0, 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x00a0, 0x10e2, 0x10e2,
96 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x14a2,
97 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x14a2,
98 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x00a0,
99 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x14a2, 0x10e2,
100 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x10e2,
101 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x10e2,
102 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x00a0,
103 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x10e2, 0x00a0
104 };
105
106 static int
iso_8859_2_mbc_to_normalize(OnigAmbigType flag,const UChar ** pp,const UChar * end,UChar * lower)107 iso_8859_2_mbc_to_normalize(OnigAmbigType flag,
108 const UChar** pp, const UChar* end, UChar* lower)
109 {
110 const UChar* 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_ISO_8859_2_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
iso_8859_2_is_mbc_ambiguous(OnigAmbigType flag,const UChar ** pp,const UChar * end)126 iso_8859_2_is_mbc_ambiguous(OnigAmbigType flag,
127 const UChar** pp, const UChar* end)
128 {
129 const UChar* p = *pp;
130
131 (*pp)++;
132 if (((flag & ONIGENC_AMBIGUOUS_MATCH_ASCII_CASE) != 0 &&
133 ONIGENC_IS_MBC_ASCII(p)) ||
134 ((flag & ONIGENC_AMBIGUOUS_MATCH_NONASCII_CASE) != 0 &&
135 !ONIGENC_IS_MBC_ASCII(p))) {
136 int v = (EncISO_8859_2_CtypeTable[*p] &
137 (ONIGENC_CTYPE_UPPER | ONIGENC_CTYPE_LOWER));
138
139 if ((v | ONIGENC_CTYPE_LOWER) != 0) {
140 /* 0xdf is lower case letter, but can't convert. */
141 if (*p == 0xdf)
142 return FALSE;
143 else
144 return TRUE;
145 }
146
147 return (v != 0 ? TRUE : FALSE);
148 }
149 return FALSE;
150 }
151
152 static int
iso_8859_2_get_all_pair_ambig_codes(OnigAmbigType flag,const OnigPairAmbigCodes ** ccs)153 iso_8859_2_get_all_pair_ambig_codes(OnigAmbigType flag,
154 const OnigPairAmbigCodes** ccs)
155 {
156 static const OnigPairAmbigCodes cc[] = {
157 { 0xa1, 0xb1 },
158 { 0xa3, 0xb3 },
159 { 0xa5, 0xb5 },
160 { 0xa6, 0xb6 },
161 { 0xa9, 0xb9 },
162 { 0xaa, 0xba },
163 { 0xab, 0xbb },
164 { 0xac, 0xbc },
165 { 0xae, 0xbe },
166 { 0xaf, 0xbf },
167
168 { 0xb1, 0xa1 },
169 { 0xb3, 0xa3 },
170 { 0xb5, 0xa5 },
171 { 0xb6, 0xa6 },
172 { 0xb9, 0xa9 },
173 { 0xba, 0xaa },
174 { 0xbb, 0xab },
175 { 0xbc, 0xac },
176 { 0xbe, 0xae },
177 { 0xbf, 0xaf },
178
179 { 0xc0, 0xe0 },
180 { 0xc1, 0xe1 },
181 { 0xc2, 0xe2 },
182 { 0xc3, 0xe3 },
183 { 0xc4, 0xe4 },
184 { 0xc5, 0xe5 },
185 { 0xc6, 0xe6 },
186 { 0xc7, 0xe7 },
187 { 0xc8, 0xe8 },
188 { 0xc9, 0xe9 },
189 { 0xca, 0xea },
190 { 0xcb, 0xeb },
191 { 0xcc, 0xec },
192 { 0xcd, 0xed },
193 { 0xce, 0xee },
194 { 0xcf, 0xef },
195
196 { 0xd0, 0xf0 },
197 { 0xd1, 0xf1 },
198 { 0xd2, 0xf2 },
199 { 0xd3, 0xf3 },
200 { 0xd4, 0xf4 },
201 { 0xd5, 0xf5 },
202 { 0xd6, 0xf6 },
203 { 0xd8, 0xf8 },
204 { 0xd9, 0xf9 },
205 { 0xda, 0xfa },
206 { 0xdb, 0xfb },
207 { 0xdc, 0xfc },
208 { 0xdd, 0xfd },
209 { 0xde, 0xfe },
210
211 { 0xe0, 0xc0 },
212 { 0xe1, 0xc1 },
213 { 0xe2, 0xc2 },
214 { 0xe3, 0xc3 },
215 { 0xe4, 0xc4 },
216 { 0xe5, 0xc5 },
217 { 0xe6, 0xc6 },
218 { 0xe7, 0xc7 },
219 { 0xe8, 0xc8 },
220 { 0xe9, 0xc9 },
221 { 0xea, 0xca },
222 { 0xeb, 0xcb },
223 { 0xec, 0xcc },
224 { 0xed, 0xcd },
225 { 0xee, 0xce },
226 { 0xef, 0xcf },
227
228 { 0xf0, 0xd0 },
229 { 0xf1, 0xd1 },
230 { 0xf2, 0xd2 },
231 { 0xf3, 0xd3 },
232 { 0xf4, 0xd4 },
233 { 0xf5, 0xd5 },
234 { 0xf6, 0xd6 },
235 { 0xf8, 0xd8 },
236 { 0xf9, 0xd9 },
237 { 0xfa, 0xda },
238 { 0xfb, 0xdb },
239 { 0xfc, 0xdc },
240 { 0xfd, 0xdd },
241 { 0xfe, 0xde }
242 };
243
244 if (flag == ONIGENC_AMBIGUOUS_MATCH_ASCII_CASE) {
245 *ccs = OnigAsciiPairAmbigCodes;
246 return 52;
247 }
248 if (flag == ONIGENC_AMBIGUOUS_MATCH_NONASCII_CASE) {
249 *ccs = cc;
250 return sizeof(cc) / sizeof(OnigPairAmbigCodes);
251 }
252 else
253 return 0;
254 }
255
256 static int
iso_8859_2_is_code_ctype(OnigCodePoint code,unsigned int ctype)257 iso_8859_2_is_code_ctype(OnigCodePoint code, unsigned int ctype)
258 {
259 if (code < 256)
260 return ENC_IS_ISO_8859_2_CTYPE(code, ctype);
261 else
262 return FALSE;
263 }
264
265 OnigEncodingType OnigEncodingISO_8859_2 = {
266 onigenc_single_byte_mbc_enc_len,
267 "ISO-8859-2", /* name */
268 1, /* max enc length */
269 1, /* min enc length */
270 (ONIGENC_AMBIGUOUS_MATCH_ASCII_CASE |
271 ONIGENC_AMBIGUOUS_MATCH_NONASCII_CASE ),
272 {
273 (OnigCodePoint )'\\' /* esc */
274 , (OnigCodePoint )ONIG_INEFFECTIVE_META_CHAR /* anychar '.' */
275 , (OnigCodePoint )ONIG_INEFFECTIVE_META_CHAR /* anytime '*' */
276 , (OnigCodePoint )ONIG_INEFFECTIVE_META_CHAR /* zero or one time '?' */
277 , (OnigCodePoint )ONIG_INEFFECTIVE_META_CHAR /* one or more time '+' */
278 , (OnigCodePoint )ONIG_INEFFECTIVE_META_CHAR /* anychar anytime */
279 },
280 onigenc_is_mbc_newline_0x0a,
281 onigenc_single_byte_mbc_to_code,
282 onigenc_single_byte_code_to_mbclen,
283 onigenc_single_byte_code_to_mbc,
284 iso_8859_2_mbc_to_normalize,
285 iso_8859_2_is_mbc_ambiguous,
286 iso_8859_2_get_all_pair_ambig_codes,
287 onigenc_ess_tsett_get_all_comp_ambig_codes,
288 iso_8859_2_is_code_ctype,
289 onigenc_not_support_get_ctype_code_range,
290 onigenc_single_byte_left_adjust_char_head,
291 onigenc_always_true_is_allowed_reverse_match
292 };
293
