1 /**********************************************************************
2   iso8859_15.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_15_TO_LOWER_CASE(c) EncISO_8859_15_ToLowerCaseTable[c]
33 #define ENC_IS_ISO_8859_15_CTYPE(code,ctype) \
34   ((EncISO_8859_15_CtypeTable[code] & ctype) != 0)
35 
36 static const UChar EncISO_8859_15_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', '\250', '\247',
58   '\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257',
59   '\260', '\261', '\262', '\263', '\270', '\265', '\266', '\267',
60   '\270', '\271', '\272', '\273', '\275', '\275', '\377', '\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_15_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, 0x01a0, 0x00a0, 0x00a0, 0x00a0, 0x00a0, 0x14a2, 0x00a0,
93   0x10e2, 0x00a0, 0x10e2, 0x01a0, 0x00a0, 0x01a0, 0x00a0, 0x00a0,
94   0x00a0, 0x00a0, 0x10a0, 0x10a0, 0x14a2, 0x10e2, 0x00a0, 0x01a0,
95   0x10e2, 0x10a0, 0x10e2, 0x01a0, 0x14a2, 0x10e2, 0x14a2, 0x01a0,
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, 0x10e2
104 };
105 
106 static int
mbc_to_normalize(OnigAmbigType flag,const UChar ** pp,const UChar * end,UChar * lower)107 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_15_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
is_mbc_ambiguous(OnigAmbigType flag,const UChar ** pp,const UChar * end)126 is_mbc_ambiguous(OnigAmbigType flag, const UChar** pp, const UChar* end)
127 {
128   const UChar* 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 = (EncISO_8859_15_CtypeTable[*p] &
136              (ONIGENC_CTYPE_UPPER | ONIGENC_CTYPE_LOWER));
137 
138     if ((v | ONIGENC_CTYPE_LOWER) != 0) {
139       /* 0xdf etc.. are lower case letter, but can't convert. */
140       if (*p == 0xdf || *p == 0xaa || *p == 0xb5 || *p == 0xba)
141         return FALSE;
142       else
143         return TRUE;
144     }
145 
146     return (v != 0 ? TRUE : FALSE);
147   }
148   return FALSE;
149 }
150 
151 static int
is_code_ctype(OnigCodePoint code,unsigned int ctype)152 is_code_ctype(OnigCodePoint code, unsigned int ctype)
153 {
154   if (code < 256)
155     return ENC_IS_ISO_8859_15_CTYPE(code, ctype);
156   else
157     return FALSE;
158 }
159 
160 static int
get_all_pair_ambig_codes(OnigAmbigType flag,const OnigPairAmbigCodes ** ccs)161 get_all_pair_ambig_codes(OnigAmbigType flag,
162 			 const OnigPairAmbigCodes** ccs)
163 {
164   static const OnigPairAmbigCodes cc[] = {
165     { 0xa6, 0xa8 },
166     { 0xa8, 0xa6 },
167 
168     { 0xb4, 0xb8 },
169     { 0xb8, 0xb4 },
170     { 0xbc, 0xbd },
171     { 0xbd, 0xbc },
172     { 0xbe, 0xff },
173 
174     { 0xc0, 0xe0 },
175     { 0xc1, 0xe1 },
176     { 0xc2, 0xe2 },
177     { 0xc3, 0xe3 },
178     { 0xc4, 0xe4 },
179     { 0xc5, 0xe5 },
180     { 0xc6, 0xe6 },
181     { 0xc7, 0xe7 },
182     { 0xc8, 0xe8 },
183     { 0xc9, 0xe9 },
184     { 0xca, 0xea },
185     { 0xcb, 0xeb },
186     { 0xcc, 0xec },
187     { 0xcd, 0xed },
188     { 0xce, 0xee },
189     { 0xcf, 0xef },
190 
191     { 0xd0, 0xf0 },
192     { 0xd1, 0xf1 },
193     { 0xd2, 0xf2 },
194     { 0xd3, 0xf3 },
195     { 0xd4, 0xf4 },
196     { 0xd5, 0xf5 },
197     { 0xd6, 0xf6 },
198     { 0xd8, 0xf8 },
199     { 0xd9, 0xf9 },
200     { 0xda, 0xfa },
201     { 0xdb, 0xfb },
202     { 0xdc, 0xfc },
203     { 0xdd, 0xfd },
204     { 0xde, 0xfe },
205 
206     { 0xe0, 0xc0 },
207     { 0xe1, 0xc1 },
208     { 0xe2, 0xc2 },
209     { 0xe3, 0xc3 },
210     { 0xe4, 0xc4 },
211     { 0xe5, 0xc5 },
212     { 0xe6, 0xc6 },
213     { 0xe7, 0xc7 },
214     { 0xe8, 0xc8 },
215     { 0xe9, 0xc9 },
216     { 0xea, 0xca },
217     { 0xeb, 0xcb },
218     { 0xec, 0xcc },
219     { 0xed, 0xcd },
220     { 0xee, 0xce },
221     { 0xef, 0xcf },
222 
223     { 0xf0, 0xd0 },
224     { 0xf1, 0xd1 },
225     { 0xf2, 0xd2 },
226     { 0xf3, 0xd3 },
227     { 0xf4, 0xd4 },
228     { 0xf5, 0xd5 },
229     { 0xf6, 0xd6 },
230     { 0xf8, 0xd8 },
231     { 0xf9, 0xd9 },
232     { 0xfa, 0xda },
233     { 0xfb, 0xdb },
234     { 0xfc, 0xdc },
235     { 0xfd, 0xdd },
236     { 0xfe, 0xde },
237     { 0xff, 0xbe }
238   };
239 
240   if (flag == ONIGENC_AMBIGUOUS_MATCH_ASCII_CASE) {
241     *ccs = OnigAsciiPairAmbigCodes;
242     return 52;
243   }
244   if (flag == ONIGENC_AMBIGUOUS_MATCH_NONASCII_CASE) {
245     *ccs = cc;
246     return sizeof(cc) / sizeof(OnigPairAmbigCodes);
247   }
248   else
249     return 0;
250 }
251 
252 OnigEncodingType OnigEncodingISO_8859_15 = {
253   onigenc_single_byte_mbc_enc_len,
254   "ISO-8859-15",  /* name */
255   1,             /* max enc length */
256   1,             /* min enc length */
257   (ONIGENC_AMBIGUOUS_MATCH_ASCII_CASE |
258    ONIGENC_AMBIGUOUS_MATCH_NONASCII_CASE ),
259   {
260       (OnigCodePoint )'\\'                       /* esc */
261     , (OnigCodePoint )ONIG_INEFFECTIVE_META_CHAR /* anychar '.'  */
262     , (OnigCodePoint )ONIG_INEFFECTIVE_META_CHAR /* anytime '*'  */
263     , (OnigCodePoint )ONIG_INEFFECTIVE_META_CHAR /* zero or one time '?' */
264     , (OnigCodePoint )ONIG_INEFFECTIVE_META_CHAR /* one or more time '+' */
265     , (OnigCodePoint )ONIG_INEFFECTIVE_META_CHAR /* anychar anytime */
266   },
267   onigenc_is_mbc_newline_0x0a,
268   onigenc_single_byte_mbc_to_code,
269   onigenc_single_byte_code_to_mbclen,
270   onigenc_single_byte_code_to_mbc,
271   mbc_to_normalize,
272   is_mbc_ambiguous,
273   get_all_pair_ambig_codes,
274   onigenc_ess_tsett_get_all_comp_ambig_codes,
275   is_code_ctype,
276   onigenc_not_support_get_ctype_code_range,
277   onigenc_single_byte_left_adjust_char_head,
278   onigenc_always_true_is_allowed_reverse_match
279 };
280