1/**********************************************************************
2  cp1251.c -  Oniguruma (regular expression library)
3**********************************************************************/
4/*-
5 * Copyright (c) 2006-2007  Byte      <byte AT mail DOT kna DOT ru>
6 *                          K.Kosako  <sndgk393 AT ybb DOT ne DOT jp>
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31#include "regenc.h"
32
33#define ENC_CP1251_TO_LOWER_CASE(c) EncCP1251_ToLowerCaseTable[c]
34#define ENC_IS_CP1251_CTYPE(code,ctype) \
35  ((EncCP1251_CtypeTable[code] & CTYPE_TO_BIT(ctype)) != 0)
36
37static const UChar EncCP1251_ToLowerCaseTable[256] = {
38  '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',
39  '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',
40  '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',
41  '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',
42  '\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047',
43  '\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057',
44  '\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067',
45  '\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077',
46  '\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
47  '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
48  '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
49  '\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137',
50  '\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
51  '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
52  '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
53  '\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177',
54  '\220', '\203', '\202', '\203', '\204', '\205', '\206', '\207',
55  '\210', '\211', '\232', '\213', '\234', '\235', '\236', '\237',
56  '\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227',
57  '\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237',
58  '\240', '\242', '\242', '\274', '\244', '\264', '\246', '\247',
59  '\270', '\251', '\272', '\253', '\254', '\255', '\256', '\277',
60  '\260', '\261', '\263', '\263', '\264', '\265', '\266', '\267',
61  '\270', '\271', '\272', '\273', '\274', '\276', '\276', '\277',
62  '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
63  '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
64  '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
65  '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377',
66  '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
67  '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
68  '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
69  '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377'
70};
71
72static const unsigned short EncCP1251_CtypeTable[256] = {
73  0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008,
74  0x4008, 0x428c, 0x4209, 0x4208, 0x4208, 0x4208, 0x4008, 0x4008,
75  0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008,
76  0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008,
77  0x4284, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0,
78  0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0,
79  0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0,
80  0x78b0, 0x78b0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0,
81  0x41a0, 0x7ca2, 0x7ca2, 0x7ca2, 0x7ca2, 0x7ca2, 0x7ca2, 0x74a2,
82  0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2,
83  0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2,
84  0x74a2, 0x74a2, 0x74a2, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x51a0,
85  0x41a0, 0x78e2, 0x78e2, 0x78e2, 0x78e2, 0x78e2, 0x78e2, 0x70e2,
86  0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2,
87  0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2,
88  0x70e2, 0x70e2, 0x70e2, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x4008,
89  0x34a2, 0x34a2, 0x01a0, 0x30e2, 0x01a0, 0x01a0, 0x01a0, 0x01a0,
90  0x0000, 0x01a0, 0x34a2, 0x01a0, 0x34a2, 0x34a2, 0x34a2, 0x34a2,
91  0x30e2, 0x01a0, 0x01a0, 0x01a0, 0x01a0, 0x01a0, 0x01a0, 0x01a0,
92  0x0008, 0x0000, 0x30e2, 0x01a0, 0x30e2, 0x30e2, 0x30e2, 0x30e2,
93  0x0280, 0x34a2, 0x30e2, 0x34a2, 0x01a0, 0x34a2, 0x01a0, 0x01a0,
94  0x34a2, 0x01a0, 0x34a2, 0x01a0, 0x01a0, 0x01a0, 0x01a0, 0x34a2,
95  0x01a0, 0x01a0, 0x34a2, 0x30e2, 0x30e2, 0x31e2, 0x01a0, 0x01a0,
96  0x30e2, 0x0000, 0x30e2, 0x01a0, 0x30e2, 0x34a2, 0x30e2, 0x30e2,
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, 0x34a2,
100  0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2,
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  0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2
105};
106
107static int
108cp1251_mbc_case_fold(OnigCaseFoldType flag ARG_UNUSED,
109             const UChar** pp, const UChar* end ARG_UNUSED, UChar* lower, OnigEncoding enc ARG_UNUSED)
110{
111  const UChar* p = *pp;
112
113  *lower = ENC_CP1251_TO_LOWER_CASE(*p);
114  (*pp)++;
115  return 1;
116}
117
118static int
119cp1251_is_code_ctype(OnigCodePoint code, unsigned int ctype, OnigEncoding enc ARG_UNUSED)
120{
121  if (code < 256)
122    return ENC_IS_CP1251_CTYPE(code, ctype);
123  else
124    return FALSE;
125}
126
127static const OnigPairCaseFoldCodes CaseFoldMap[] = {
128  { 0xb8, 0xa8 },
129
130  { 0xe0, 0xc0 },
131  { 0xe1, 0xc1 },
132  { 0xe2, 0xc2 },
133  { 0xe3, 0xc3 },
134  { 0xe4, 0xc4 },
135  { 0xe5, 0xc5 },
136  { 0xe6, 0xc6 },
137  { 0xe7, 0xc7 },
138  { 0xe8, 0xc8 },
139  { 0xe9, 0xc9 },
140  { 0xea, 0xca },
141  { 0xeb, 0xcb },
142  { 0xec, 0xcc },
143  { 0xed, 0xcd },
144  { 0xee, 0xce },
145  { 0xef, 0xcf },
146
147  { 0xf0, 0xd0 },
148  { 0xf1, 0xd1 },
149  { 0xf2, 0xd2 },
150  { 0xf3, 0xd3 },
151  { 0xf4, 0xd4 },
152  { 0xf5, 0xd5 },
153  { 0xf6, 0xd6 },
154  { 0xf7, 0xd7 },
155  { 0xf8, 0xd8 },
156  { 0xf9, 0xd9 },
157  { 0xfa, 0xda },
158  { 0xfb, 0xdb },
159  { 0xfc, 0xdc },
160  { 0xfd, 0xdd },
161  { 0xfe, 0xde },
162  { 0xff, 0xdf }
163};
164
165static int
166cp1251_apply_all_case_fold(OnigCaseFoldType flag,
167			       OnigApplyAllCaseFoldFunc f, void* arg, OnigEncoding enc ARG_UNUSED)
168{
169  return onigenc_apply_all_case_fold_with_map(
170             sizeof(CaseFoldMap)/sizeof(OnigPairCaseFoldCodes), CaseFoldMap, 0,
171             flag, f, arg);
172}
173
174static int
175cp1251_get_case_fold_codes_by_str(OnigCaseFoldType flag,
176    const OnigUChar* p, const OnigUChar* end, OnigCaseFoldCodeItem items[], OnigEncoding enc ARG_UNUSED)
177{
178  return onigenc_get_case_fold_codes_by_str_with_map(
179	     sizeof(CaseFoldMap)/sizeof(OnigPairCaseFoldCodes), CaseFoldMap, 0,
180	     flag, p, end, items);
181}
182
183OnigEncodingDefine(windows_1251, Windows_1251) = {
184  onigenc_single_byte_mbc_enc_len,
185  "Windows-1251",      /* name */
186  1,             /* max enc length */
187  1,             /* min enc length */
188  onigenc_is_mbc_newline_0x0a,
189  onigenc_single_byte_mbc_to_code,
190  onigenc_single_byte_code_to_mbclen,
191  onigenc_single_byte_code_to_mbc,
192  cp1251_mbc_case_fold,
193  cp1251_apply_all_case_fold,
194  cp1251_get_case_fold_codes_by_str,
195  onigenc_minimum_property_name_to_ctype,
196  cp1251_is_code_ctype,
197  onigenc_not_support_get_ctype_code_range,
198  onigenc_single_byte_left_adjust_char_head,
199  onigenc_always_true_is_allowed_reverse_match,
200  0,
201  ONIGENC_FLAG_NONE,
202};
203/*
204 * Name: windows-1251
205 * MIBenum: 2251
206 * Link: http://www.iana.org/assignments/character-sets
207 * Link: http://www.microsoft.com/globaldev/reference/sbcs/1251.mspx
208 * Link: http://en.wikipedia.org/wiki/Windows-1251
209 */
210ENC_ALIAS("CP1251", "Windows-1251")
211