1 /**********************************************************************
2   iso8859_14.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_14_TO_LOWER_CASE(c) EncISO_8859_14_ToLowerCaseTable[c]
33 #define ENC_IS_ISO_8859_14_CTYPE(code,ctype) \
34   ((EncISO_8859_14_CtypeTable[code] & CTYPE_TO_BIT(ctype)) != 0)
35 
36 static const UChar EncISO_8859_14_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', '\242', '\242', '\243', '\245', '\245', '\253', '\247',
58   '\270', '\251', '\272', '\253', '\274', '\255', '\256', '\377',
59   '\261', '\261', '\263', '\263', '\265', '\265', '\266', '\271',
60   '\270', '\271', '\272', '\277', '\274', '\276', '\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_14_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, 0x30e2, 0x00a0, 0x34a2, 0x30e2, 0x34a2, 0x00a0,
93   0x34a2, 0x00a0, 0x34a2, 0x30e2, 0x34a2, 0x01a0, 0x00a0, 0x34a2,
94   0x34a2, 0x30e2, 0x34a2, 0x30e2, 0x34a2, 0x30e2, 0x00a0, 0x34a2,
95   0x30e2, 0x30e2, 0x30e2, 0x34a2, 0x30e2, 0x34a2, 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_14_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,
127 		 const UChar** pp, const UChar* end)
128 {
129   int v;
130   const UChar* p = *pp;
131 
132   if (*p == 0xdf && (flag & INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR) != 0) {
133     (*pp)++;
134     return TRUE;
135   }
136 
137   (*pp)++;
138   v = (EncISO_8859_14_CtypeTable[*p] & (BIT_CTYPE_UPPER | BIT_CTYPE_LOWER));
139   if ((v | BIT_CTYPE_LOWER) != 0) {
140     return TRUE;
141   }
142 
143   return (v != 0 ? TRUE : FALSE);
144 }
145 #endif
146 
147 static int
is_code_ctype(OnigCodePoint code,unsigned int ctype)148 is_code_ctype(OnigCodePoint code, unsigned int ctype)
149 {
150   if (code < 256)
151     return ENC_IS_ISO_8859_14_CTYPE(code, ctype);
152   else
153     return FALSE;
154 }
155 
156 static const OnigPairCaseFoldCodes CaseFoldMap[] = {
157  { 0xa1, 0xa2 },
158  { 0xa4, 0xa5 },
159  { 0xa6, 0xab },
160  { 0xa8, 0xb8 },
161  { 0xaa, 0xba },
162  { 0xac, 0xbc },
163  { 0xaf, 0xff },
164 
165  { 0xb0, 0xb1 },
166  { 0xb2, 0xb3 },
167  { 0xb4, 0xb5 },
168  { 0xb7, 0xb9 },
169  { 0xbb, 0xbf },
170  { 0xbd, 0xbe },
171 
172  { 0xc0, 0xe0 },
173  { 0xc1, 0xe1 },
174  { 0xc2, 0xe2 },
175  { 0xc3, 0xe3 },
176  { 0xc4, 0xe4 },
177  { 0xc5, 0xe5 },
178  { 0xc6, 0xe6 },
179  { 0xc7, 0xe7 },
180  { 0xc8, 0xe8 },
181  { 0xc9, 0xe9 },
182  { 0xca, 0xea },
183  { 0xcb, 0xeb },
184  { 0xcc, 0xec },
185  { 0xcd, 0xed },
186  { 0xce, 0xee },
187  { 0xcf, 0xef },
188 
189  { 0xd0, 0xf0 },
190  { 0xd1, 0xf1 },
191  { 0xd2, 0xf2 },
192  { 0xd3, 0xf3 },
193  { 0xd4, 0xf4 },
194  { 0xd5, 0xf5 },
195  { 0xd6, 0xf6 },
196  { 0xd7, 0xf7 },
197  { 0xd8, 0xf8 },
198  { 0xd9, 0xf9 },
199  { 0xda, 0xfa },
200  { 0xdb, 0xfb },
201  { 0xdc, 0xfc },
202  { 0xdd, 0xfd },
203  { 0xde, 0xfe }
204 };
205 
206 static int
apply_all_case_fold(OnigCaseFoldType flag,OnigApplyAllCaseFoldFunc f,void * arg)207 apply_all_case_fold(OnigCaseFoldType flag,
208 		    OnigApplyAllCaseFoldFunc f, void* arg)
209 {
210   return onigenc_apply_all_case_fold_with_map(
211              sizeof(CaseFoldMap)/sizeof(OnigPairCaseFoldCodes), CaseFoldMap, 1,
212              flag, f, arg);
213 }
214 
215 static int
get_case_fold_codes_by_str(OnigCaseFoldType flag,const OnigUChar * p,const OnigUChar * end,OnigCaseFoldCodeItem items[])216 get_case_fold_codes_by_str(OnigCaseFoldType flag,
217     const OnigUChar* p, const OnigUChar* end, OnigCaseFoldCodeItem items[])
218 {
219   return onigenc_get_case_fold_codes_by_str_with_map(
220 	     sizeof(CaseFoldMap)/sizeof(OnigPairCaseFoldCodes), CaseFoldMap, 1,
221 	     flag, p, end, items);
222 }
223 
224 OnigEncodingType OnigEncodingISO_8859_14 = {
225   onigenc_single_byte_mbc_enc_len,
226   "ISO-8859-14",  /* name */
227   1,             /* max enc length */
228   1,             /* min enc length */
229   onigenc_is_mbc_newline_0x0a,
230   onigenc_single_byte_mbc_to_code,
231   onigenc_single_byte_code_to_mbclen,
232   onigenc_single_byte_code_to_mbc,
233   mbc_case_fold,
234   apply_all_case_fold,
235   get_case_fold_codes_by_str,
236   onigenc_minimum_property_name_to_ctype,
237   is_code_ctype,
238   onigenc_not_support_get_ctype_code_range,
239   onigenc_single_byte_left_adjust_char_head,
240   onigenc_always_true_is_allowed_reverse_match
241 };
242