1 /**********************************************************************
2   iso8859_13.c -  Oniguruma (regular expression library)
3 **********************************************************************/
4 /*-
5  * Copyright (c) 2002-2019  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_ISO_8859_13_TO_LOWER_CASE(c) EncISO_8859_13_ToLowerCaseTable[c]
33 #define ENC_IS_ISO_8859_13_CTYPE(code,ctype) \
34   ((EncISO_8859_13_CtypeTable[code] & CTYPE_TO_BIT(ctype)) != 0)
35 
36 static const UChar EncISO_8859_13_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   '\270', '\251', '\272', '\253', '\254', '\255', '\256', '\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_13_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, 0x01a0, 0x00a0, 0x00a0, 0x00a0, 0x01a0, 0x00a0, 0x00a0,
93   0x34a2, 0x00a0, 0x34a2, 0x01a0, 0x00a0, 0x01a0, 0x00a0, 0x34a2,
94   0x00a0, 0x00a0, 0x10a0, 0x10a0, 0x01a0, 0x30e2, 0x00a0, 0x01a0,
95   0x30e2, 0x10a0, 0x30e2, 0x01a0, 0x10a0, 0x10a0, 0x10a0, 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, 0x00a0,
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, 0x00a0,
103   0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x01a0
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_13_TO_LOWER_CASE(*p);
120   (*pp)++;
121   return 1;
122 }
123 
124 static int
is_code_ctype(OnigCodePoint code,unsigned int ctype)125 is_code_ctype(OnigCodePoint code, unsigned int ctype)
126 {
127   if (code < 256)
128     return ENC_IS_ISO_8859_13_CTYPE(code, ctype);
129   else
130     return FALSE;
131 }
132 
133 static const OnigPairCaseFoldCodes CaseFoldMap[] = {
134  { 0xc0, 0xe0 },
135  { 0xc1, 0xe1 },
136  { 0xc2, 0xe2 },
137  { 0xc3, 0xe3 },
138  { 0xc4, 0xe4 },
139  { 0xc5, 0xe5 },
140  { 0xc6, 0xe6 },
141  { 0xc7, 0xe7 },
142  { 0xc8, 0xe8 },
143  { 0xc9, 0xe9 },
144  { 0xca, 0xea },
145  { 0xcb, 0xeb },
146  { 0xcc, 0xec },
147  { 0xcd, 0xed },
148  { 0xce, 0xee },
149  { 0xcf, 0xef },
150 
151  { 0xd0, 0xf0 },
152  { 0xd1, 0xf1 },
153  { 0xd2, 0xf2 },
154  { 0xd3, 0xf3 },
155  { 0xd4, 0xf4 },
156  { 0xd5, 0xf5 },
157  { 0xd6, 0xf6 },
158  { 0xd8, 0xf8 },
159  { 0xd9, 0xf9 },
160  { 0xda, 0xfa },
161  { 0xdb, 0xfb },
162  { 0xdc, 0xfc },
163  { 0xdd, 0xfd },
164  { 0xde, 0xfe }
165 };
166 
167 static int
apply_all_case_fold(OnigCaseFoldType flag,OnigApplyAllCaseFoldFunc f,void * arg)168 apply_all_case_fold(OnigCaseFoldType flag,
169                     OnigApplyAllCaseFoldFunc f, void* arg)
170 {
171   return onigenc_apply_all_case_fold_with_map(
172              sizeof(CaseFoldMap)/sizeof(OnigPairCaseFoldCodes), CaseFoldMap, 1,
173              flag, f, arg);
174 }
175 
176 static int
get_case_fold_codes_by_str(OnigCaseFoldType flag,const OnigUChar * p,const OnigUChar * end,OnigCaseFoldCodeItem items[])177 get_case_fold_codes_by_str(OnigCaseFoldType flag,
178    const OnigUChar* p, const OnigUChar* end, OnigCaseFoldCodeItem items[])
179 {
180   return onigenc_get_case_fold_codes_by_str_with_map(
181                  sizeof(CaseFoldMap)/sizeof(OnigPairCaseFoldCodes), CaseFoldMap, 1,
182                  flag, p, end, items);
183 }
184 
185 OnigEncodingType OnigEncodingISO_8859_13 = {
186   onigenc_single_byte_mbc_enc_len,
187   "ISO-8859-13",  /* name */
188   1,             /* max enc length */
189   1,             /* min enc length */
190   onigenc_is_mbc_newline_0x0a,
191   onigenc_single_byte_mbc_to_code,
192   onigenc_single_byte_code_to_mbclen,
193   onigenc_single_byte_code_to_mbc,
194   mbc_case_fold,
195   apply_all_case_fold,
196   get_case_fold_codes_by_str,
197   onigenc_minimum_property_name_to_ctype,
198   is_code_ctype,
199   onigenc_not_support_get_ctype_code_range,
200   onigenc_single_byte_left_adjust_char_head,
201   onigenc_always_true_is_allowed_reverse_match,
202   NULL, /* init */
203   NULL, /* is_initialized */
204   onigenc_always_true_is_valid_mbc_string,
205   ENC_FLAG_ASCII_COMPATIBLE|ENC_FLAG_SKIP_OFFSET_1,
206   0, 0
207 };
208