xref: /PHP-7.1/ext/mbstring/oniguruma/enc/iso8859_2.c (revision fe92d64a)
1 /**********************************************************************
2   iso8859_2.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_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_TO_BIT(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   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, 0x00a0, 0x34a2, 0x00a0, 0x34a2, 0x34a2, 0x00a0,
93   0x00a0, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x01a0, 0x34a2, 0x34a2,
94   0x00a0, 0x30e2, 0x00a0, 0x30e2, 0x00a0, 0x30e2, 0x30e2, 0x00a0,
95   0x00a0, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x00a0, 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, 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, 0x00a0
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_2_TO_LOWER_CASE(*p);
120   (*pp)++;
121   return 1; /* return byte length of converted char to lower */
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_2_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 const OnigPairCaseFoldCodes CaseFoldMap[] = {
147  { 0xa1, 0xb1 },
148  { 0xa3, 0xb3 },
149  { 0xa5, 0xb5 },
150  { 0xa6, 0xb6 },
151  { 0xa9, 0xb9 },
152  { 0xaa, 0xba },
153  { 0xab, 0xbb },
154  { 0xac, 0xbc },
155  { 0xae, 0xbe },
156  { 0xaf, 0xbf },
157 
158  { 0xc0, 0xe0 },
159  { 0xc1, 0xe1 },
160  { 0xc2, 0xe2 },
161  { 0xc3, 0xe3 },
162  { 0xc4, 0xe4 },
163  { 0xc5, 0xe5 },
164  { 0xc6, 0xe6 },
165  { 0xc7, 0xe7 },
166  { 0xc8, 0xe8 },
167  { 0xc9, 0xe9 },
168  { 0xca, 0xea },
169  { 0xcb, 0xeb },
170  { 0xcc, 0xec },
171  { 0xcd, 0xed },
172  { 0xce, 0xee },
173  { 0xcf, 0xef },
174 
175  { 0xd0, 0xf0 },
176  { 0xd1, 0xf1 },
177  { 0xd2, 0xf2 },
178  { 0xd3, 0xf3 },
179  { 0xd4, 0xf4 },
180  { 0xd5, 0xf5 },
181  { 0xd6, 0xf6 },
182  { 0xd8, 0xf8 },
183  { 0xd9, 0xf9 },
184  { 0xda, 0xfa },
185  { 0xdb, 0xfb },
186  { 0xdc, 0xfc },
187  { 0xdd, 0xfd },
188  { 0xde, 0xfe }
189 };
190 
191 static int
apply_all_case_fold(OnigCaseFoldType flag,OnigApplyAllCaseFoldFunc f,void * arg)192 apply_all_case_fold(OnigCaseFoldType flag,
193 		    OnigApplyAllCaseFoldFunc f, void* arg)
194 {
195   return onigenc_apply_all_case_fold_with_map(
196             sizeof(CaseFoldMap)/sizeof(OnigPairCaseFoldCodes), CaseFoldMap, 1,
197             flag, f, arg);
198 }
199 
200 static int
get_case_fold_codes_by_str(OnigCaseFoldType flag,const OnigUChar * p,const OnigUChar * end,OnigCaseFoldCodeItem items[])201 get_case_fold_codes_by_str(OnigCaseFoldType flag,
202     const OnigUChar* p, const OnigUChar* end, OnigCaseFoldCodeItem items[])
203 {
204   return onigenc_get_case_fold_codes_by_str_with_map(
205 	     sizeof(CaseFoldMap)/sizeof(OnigPairCaseFoldCodes), CaseFoldMap, 1,
206 	     flag, p, end, items);
207 }
208 
209 static int
is_code_ctype(OnigCodePoint code,unsigned int ctype)210 is_code_ctype(OnigCodePoint code, unsigned int ctype)
211 {
212   if (code < 256)
213     return ENC_IS_ISO_8859_2_CTYPE(code, ctype);
214   else
215     return FALSE;
216 }
217 
218 OnigEncodingType OnigEncodingISO_8859_2 = {
219   onigenc_single_byte_mbc_enc_len,
220   "ISO-8859-2",  /* 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   mbc_case_fold,
228   apply_all_case_fold,
229   get_case_fold_codes_by_str,
230   onigenc_minimum_property_name_to_ctype,
231   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 };
236