Ruby  1.9.3p429(2013-05-15revision40747)
iso_8859_4.c
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1 /**********************************************************************
2  iso8859_4.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_4_TO_LOWER_CASE(c) EncISO_8859_4_ToLowerCaseTable[c]
33 #define ENC_IS_ISO_8859_4_CTYPE(code,ctype) \
34  ((EncISO_8859_4_CtypeTable[code] & CTYPE_TO_BIT(ctype)) != 0)
35 
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', '\257',
59  '\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267',
60  '\270', '\271', '\272', '\273', '\274', '\277', '\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_4_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, 0x34a2, 0x00a0, 0x34a2, 0x34a2, 0x00a0,
93  0x00a0, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x01a0, 0x34a2, 0x00a0,
94  0x00a0, 0x30e2, 0x00a0, 0x30e2, 0x00a0, 0x30e2, 0x30e2, 0x00a0,
95  0x00a0, 0x30e2, 0x30e2, 0x30e2, 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, 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
108  const UChar** pp, const UChar* end ARG_UNUSED, UChar* lower,
109  OnigEncoding enc ARG_UNUSED)
110 {
111  const UChar* p = *pp;
112 
113  if (*p == 0xdf && (flag & INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR) != 0) {
114  *lower++ = 's';
115  *lower = 's';
116  (*pp)++;
117  return 2;
118  }
119 
120  *lower = ENC_ISO_8859_4_TO_LOWER_CASE(*p);
121  (*pp)++;
122  return 1; /* return byte length of converted char to lower */
123 }
124 
125 #if 0
126 static int
127 is_mbc_ambiguous(OnigCaseFoldType flag, 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)++;
139  if ((v | BIT_CTYPE_LOWER) != 0) {
140  if (*p == 0xa2)
141  return FALSE;
142  else
143  return TRUE;
144  }
145 
146  return (v != 0 ? TRUE : FALSE);
147 }
148 #endif
149 
150 static int
151 is_code_ctype(OnigCodePoint code, unsigned int ctype, OnigEncoding enc ARG_UNUSED)
152 {
153  if (code < 256)
154  return ENC_IS_ISO_8859_4_CTYPE(code, ctype);
155  else
156  return FALSE;
157 }
158 
160  { 0xa1, 0xb1 },
161  { 0xa3, 0xb3 },
162  { 0xa5, 0xb5 },
163  { 0xa6, 0xb6 },
164  { 0xa9, 0xb9 },
165  { 0xaa, 0xba },
166  { 0xab, 0xbb },
167  { 0xac, 0xbc },
168  { 0xae, 0xbe },
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  { 0xd8, 0xf8 },
195  { 0xd9, 0xf9 },
196  { 0xda, 0xfa },
197  { 0xdb, 0xfb },
198  { 0xdc, 0xfc },
199  { 0xdd, 0xfd },
200  { 0xde, 0xfe }
201 };
202 
203 static int
205  OnigApplyAllCaseFoldFunc f, void* arg,
206  OnigEncoding enc ARG_UNUSED)
207 {
209  sizeof(CaseFoldMap)/sizeof(OnigPairCaseFoldCodes), CaseFoldMap, 1,
210  flag, f, arg);
211 }
212 
213 static int
215  const OnigUChar* p, const OnigUChar* end,
216  OnigCaseFoldCodeItem items[],
217  OnigEncoding enc ARG_UNUSED)
218 {
220  sizeof(CaseFoldMap)/sizeof(OnigPairCaseFoldCodes), CaseFoldMap, 1,
221  flag, p, end, items);
222 }
223 
224 OnigEncodingDefine(iso_8859_4, ISO_8859_4) = {
226  "ISO-8859-4", /* name */
227  1, /* max enc length */
228  1, /* min enc length */
241 };
242 ENC_ALIAS("ISO8859-4", "ISO-8859-4")
243