1 /**********************************************************************
2   iso8859_10.c -  Oniguruma (regular expression library)
3 **********************************************************************/
4 /*-
5  * Copyright (c) 2002-2016  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_10_TO_LOWER_CASE(c) EncISO_8859_10_ToLowerCaseTable[c]
33 #define ENC_IS_ISO_8859_10_CTYPE(code,ctype) \
34   ((EncISO_8859_10_CtypeTable[code] & CTYPE_TO_BIT(ctype)) != 0)
35 
36 static const UChar EncISO_8859_10_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', '\262', '\263', '\264', '\265', '\266', '\247',
58   '\270', '\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', '\367',
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_10_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, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x00a0,
93   0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x01a0, 0x34a2, 0x34a2,
94   0x00a0, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x01a0,
95   0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x01a0, 0x30e2, 0x30e2,
96   0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2,
97   0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2,
98   0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2,
99   0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x30e2,
100   0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2,
101   0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2,
102   0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2,
103   0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2
104 };
105 
106 static int
mbc_case_fold(OnigCaseFoldType flag,const UChar ** pp,const UChar * end ARG_UNUSED,UChar * lower)107 mbc_case_fold(OnigCaseFoldType flag,
108 	      const UChar** pp, const UChar* end ARG_UNUSED, UChar* lower)
109 {
110   const UChar* p = *pp;
111 
112   if (*p == 0xdf && (flag & INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR) != 0) {
113     *lower++ = 's';
114     *lower   = 's';
115     (*pp)++;
116     return 2;
117   }
118 
119   *lower = ENC_ISO_8859_10_TO_LOWER_CASE(*p);
120   (*pp)++;
121   return 1;
122 }
123 
124 #if 0
125 static int
126 is_mbc_ambiguous(OnigCaseFoldType flag, const UChar** pp, const UChar* end)
127 {
128   int v;
129   const UChar* p = *pp;
130 
131   if (*p == 0xdf && (flag & INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR) != 0) {
132     (*pp)++;
133     return TRUE;
134   }
135 
136   (*pp)++;
137   v = (EncISO_8859_10_CtypeTable[*p] & (BIT_CTYPE_UPPER | BIT_CTYPE_LOWER));
138   if ((v | BIT_CTYPE_LOWER) != 0) {
139     return TRUE;
140   }
141 
142   return (v != 0 ? TRUE : FALSE);
143 }
144 #endif
145 
146 static int
is_code_ctype(OnigCodePoint code,unsigned int ctype)147 is_code_ctype(OnigCodePoint code, unsigned int ctype)
148 {
149   if (code < 256)
150     return ENC_IS_ISO_8859_10_CTYPE(code, ctype);
151   else
152     return FALSE;
153 }
154 
155 static const OnigPairCaseFoldCodes CaseFoldMap[] = {
156  { 0xa1, 0xb1 },
157  { 0xa2, 0xb2 },
158  { 0xa3, 0xb3 },
159  { 0xa4, 0xb4 },
160  { 0xa5, 0xb5 },
161  { 0xa6, 0xb6 },
162  { 0xa8, 0xb8 },
163  { 0xa9, 0xb9 },
164  { 0xaa, 0xba },
165  { 0xab, 0xbb },
166  { 0xac, 0xbc },
167  { 0xae, 0xbe },
168  { 0xaf, 0xbf },
169 
170  { 0xc0, 0xe0 },
171  { 0xc1, 0xe1 },
172  { 0xc2, 0xe2 },
173  { 0xc3, 0xe3 },
174  { 0xc4, 0xe4 },
175  { 0xc5, 0xe5 },
176  { 0xc6, 0xe6 },
177  { 0xc7, 0xe7 },
178  { 0xc8, 0xe8 },
179  { 0xc9, 0xe9 },
180  { 0xca, 0xea },
181  { 0xcb, 0xeb },
182  { 0xcc, 0xec },
183  { 0xcd, 0xed },
184  { 0xce, 0xee },
185  { 0xcf, 0xef },
186 
187  { 0xd0, 0xf0 },
188  { 0xd1, 0xf1 },
189  { 0xd2, 0xf2 },
190  { 0xd3, 0xf3 },
191  { 0xd4, 0xf4 },
192  { 0xd5, 0xf5 },
193  { 0xd6, 0xf6 },
194  { 0xd7, 0xf7 },
195  { 0xd8, 0xf8 },
196  { 0xd9, 0xf9 },
197  { 0xda, 0xfa },
198  { 0xdb, 0xfb },
199  { 0xdc, 0xfc },
200  { 0xdd, 0xfd },
201  { 0xde, 0xfe }
202 };
203 
204 static int
apply_all_case_fold(OnigCaseFoldType flag,OnigApplyAllCaseFoldFunc f,void * arg)205 apply_all_case_fold(OnigCaseFoldType flag,
206 		    OnigApplyAllCaseFoldFunc f, void* arg)
207 {
208   return onigenc_apply_all_case_fold_with_map(
209              sizeof(CaseFoldMap)/sizeof(OnigPairCaseFoldCodes), CaseFoldMap, 1,
210              flag, f, arg);
211 }
212 
213 static int
get_case_fold_codes_by_str(OnigCaseFoldType flag,const OnigUChar * p,const OnigUChar * end,OnigCaseFoldCodeItem items[])214 get_case_fold_codes_by_str(OnigCaseFoldType flag,
215     const OnigUChar* p, const OnigUChar* end, OnigCaseFoldCodeItem items[])
216 {
217   return onigenc_get_case_fold_codes_by_str_with_map(
218 	     sizeof(CaseFoldMap)/sizeof(OnigPairCaseFoldCodes), CaseFoldMap, 1,
219 	     flag, p, end, items);
220 }
221 
222 OnigEncodingType OnigEncodingISO_8859_10 = {
223   onigenc_single_byte_mbc_enc_len,
224   "ISO-8859-10", /* name */
225   1,             /* max enc length */
226   1,             /* min enc length */
227   onigenc_is_mbc_newline_0x0a,
228   onigenc_single_byte_mbc_to_code,
229   onigenc_single_byte_code_to_mbclen,
230   onigenc_single_byte_code_to_mbc,
231   mbc_case_fold,
232   apply_all_case_fold,
233   get_case_fold_codes_by_str,
234   onigenc_minimum_property_name_to_ctype,
235   is_code_ctype,
236   onigenc_not_support_get_ctype_code_range,
237   onigenc_single_byte_left_adjust_char_head,
238   onigenc_always_true_is_allowed_reverse_match,
239   NULL, /* init */
240   NULL, /* is_initialized */
241   onigenc_always_true_is_valid_mbc_string
242 };
243