Ruby  1.9.3p551(2014-11-13revision48407)
iso_8859_2.c
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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 numberof(array) (int)(sizeof(array) / sizeof((array)[0]))
33 
34 #define ENC_ISO_8859_2_TO_LOWER_CASE(c) EncISO_8859_2_ToLowerCaseTable[c]
35 #define ENC_IS_ISO_8859_2_CTYPE(code,ctype) \
36  ((EncISO_8859_2_CtypeTable[code] & CTYPE_TO_BIT(ctype)) != 0)
37 
39  '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',
40  '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',
41  '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',
42  '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',
43  '\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047',
44  '\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057',
45  '\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067',
46  '\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077',
47  '\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
48  '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
49  '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
50  '\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137',
51  '\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
52  '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
53  '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
54  '\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177',
55  '\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207',
56  '\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217',
57  '\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227',
58  '\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237',
59  '\240', '\261', '\242', '\263', '\244', '\265', '\266', '\247',
60  '\250', '\271', '\272', '\273', '\274', '\255', '\276', '\277',
61  '\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267',
62  '\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277',
63  '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
64  '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
65  '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\327',
66  '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\337',
67  '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
68  '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
69  '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
70  '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377'
71 };
72 
73 static const unsigned short EncISO_8859_2_CtypeTable[256] = {
74  0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008,
75  0x4008, 0x420c, 0x4209, 0x4208, 0x4208, 0x4208, 0x4008, 0x4008,
76  0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008,
77  0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008,
78  0x4284, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0,
79  0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0,
80  0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0,
81  0x78b0, 0x78b0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0,
82  0x41a0, 0x7ca2, 0x7ca2, 0x7ca2, 0x7ca2, 0x7ca2, 0x7ca2, 0x74a2,
83  0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2,
84  0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2,
85  0x74a2, 0x74a2, 0x74a2, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x51a0,
86  0x41a0, 0x78e2, 0x78e2, 0x78e2, 0x78e2, 0x78e2, 0x78e2, 0x70e2,
87  0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2,
88  0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2,
89  0x70e2, 0x70e2, 0x70e2, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x4008,
90  0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008,
91  0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008,
92  0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008,
93  0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008,
94  0x0284, 0x34a2, 0x00a0, 0x34a2, 0x00a0, 0x34a2, 0x34a2, 0x00a0,
95  0x00a0, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x01a0, 0x34a2, 0x34a2,
96  0x00a0, 0x30e2, 0x00a0, 0x30e2, 0x00a0, 0x30e2, 0x30e2, 0x00a0,
97  0x00a0, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x00a0, 0x30e2, 0x30e2,
98  0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2,
99  0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2,
100  0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x00a0,
101  0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x30e2,
102  0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2,
103  0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2,
104  0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x00a0,
105  0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x00a0
106 };
107 
108 static int
110  const UChar** pp, const UChar* end ARG_UNUSED, UChar* lower,
111  OnigEncoding enc ARG_UNUSED)
112 {
113  const UChar* p = *pp;
114 
115  if (*p == 0xdf && (flag & INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR) != 0) {
116  *lower++ = 's';
117  *lower = 's';
118  (*pp)++;
119  return 2;
120  }
121 
122  *lower = ENC_ISO_8859_2_TO_LOWER_CASE(*p);
123  (*pp)++;
124  return 1; /* return byte length of converted char to lower */
125 }
126 
127 #if 0
128 static int
129 is_mbc_ambiguous(OnigCaseFoldType flag, const UChar** pp, const UChar* end)
130 {
131  int v;
132  const UChar* p = *pp;
133 
134  if (*p == 0xdf && (flag & INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR) != 0) {
135  (*pp)++;
136  return TRUE;
137  }
138 
139  (*pp)++;
141  if ((v | BIT_CTYPE_LOWER) != 0) {
142  return TRUE;
143  }
144 
145  return (v != 0 ? TRUE : FALSE);
146 }
147 #endif
148 
150  { 0xa1, 0xb1 },
151  { 0xa3, 0xb3 },
152  { 0xa5, 0xb5 },
153  { 0xa6, 0xb6 },
154  { 0xa9, 0xb9 },
155  { 0xaa, 0xba },
156  { 0xab, 0xbb },
157  { 0xac, 0xbc },
158  { 0xae, 0xbe },
159  { 0xaf, 0xbf },
160 
161  { 0xc0, 0xe0 },
162  { 0xc1, 0xe1 },
163  { 0xc2, 0xe2 },
164  { 0xc3, 0xe3 },
165  { 0xc4, 0xe4 },
166  { 0xc5, 0xe5 },
167  { 0xc6, 0xe6 },
168  { 0xc7, 0xe7 },
169  { 0xc8, 0xe8 },
170  { 0xc9, 0xe9 },
171  { 0xca, 0xea },
172  { 0xcb, 0xeb },
173  { 0xcc, 0xec },
174  { 0xcd, 0xed },
175  { 0xce, 0xee },
176  { 0xcf, 0xef },
177 
178  { 0xd0, 0xf0 },
179  { 0xd1, 0xf1 },
180  { 0xd2, 0xf2 },
181  { 0xd3, 0xf3 },
182  { 0xd4, 0xf4 },
183  { 0xd5, 0xf5 },
184  { 0xd6, 0xf6 },
185  { 0xd8, 0xf8 },
186  { 0xd9, 0xf9 },
187  { 0xda, 0xfa },
188  { 0xdb, 0xfb },
189  { 0xdc, 0xfc },
190  { 0xdd, 0xfd },
191  { 0xde, 0xfe }
192 };
193 
194 static int
196  OnigApplyAllCaseFoldFunc f, void* arg,
197  OnigEncoding enc ARG_UNUSED)
198 {
200  numberof(CaseFoldMap), CaseFoldMap, 1,
201  flag, f, arg);
202 }
203 
204 static int
206  const OnigUChar* p, const OnigUChar* end,
207  OnigCaseFoldCodeItem items[],
208  OnigEncoding enc ARG_UNUSED)
209 {
211  numberof(CaseFoldMap), CaseFoldMap, 1,
212  flag, p, end, items);
213 }
214 
215 static int
216 is_code_ctype(OnigCodePoint code, unsigned int ctype, OnigEncoding enc ARG_UNUSED)
217 {
218  if (code < 256)
219  return ENC_IS_ISO_8859_2_CTYPE(code, ctype);
220  else
221  return FALSE;
222 }
223 
224 OnigEncodingDefine(iso_8859_2, ISO_8859_2) = {
226  "ISO-8859-2", /* name */
227  1, /* max enc length */
228  1, /* min enc length */
241 };
242 ENC_ALIAS("ISO8859-2", "ISO-8859-2")
243 
244 /*
245  * Name: windows-1250
246  * MIBenum: 2250
247  * Link: http://www.iana.org/assignments/character-sets
248  * Link: http://www.microsoft.com/globaldev/reference/sbcs/1250.mspx
249  * Link: http://en.wikipedia.org/wiki/Windows-1250
250  */
251 ENC_REPLICATE("Windows-1250", "ISO-8859-2")
252 ENC_ALIAS("CP1250", "Windows-1250")
253