1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
/**********************************************************************
big5.c - Oniguruma (regular expression library)
**********************************************************************/
/*-
* Copyright (c) 2002-2019 K.Kosako
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "regenc.h"
static const int EncLen_BIG5[] = {
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1
};
static int
big5_mbc_enc_len(const UChar* p)
{
return EncLen_BIG5[*p];
}
static int
big5_code_to_mbclen(OnigCodePoint code)
{
if ((code & (~0xffff)) != 0) return ONIGERR_INVALID_CODE_POINT_VALUE;
if ((code & 0xff00) != 0) return 2;
if (EncLen_BIG5[(int )(code & 0xff)] == 1) return 1;
return ONIGERR_INVALID_CODE_POINT_VALUE;
}
static int
is_valid_mbc_string(const UChar* p, const UChar* end)
{
while (p < end) {
if (*p < 0x80) {
p++;
}
else if (*p < 0xa1) {
return FALSE;
}
else if (*p < 0xff) {
p++;
if (p >= end) return FALSE;
if (*p < 0x40) return FALSE;
if (*p > 0x7e && *p < 0xa1) return FALSE;
if (*p == 0xff) return FALSE;
p++;
}
else
return FALSE;
}
return TRUE;
}
static OnigCodePoint
big5_mbc_to_code(const UChar* p, const UChar* end)
{
return onigenc_mbn_mbc_to_code(ONIG_ENCODING_BIG5, p, end);
}
static int
big5_code_to_mbc(OnigCodePoint code, UChar *buf)
{
return onigenc_mb2_code_to_mbc(ONIG_ENCODING_BIG5, code, buf);
}
static int
big5_mbc_case_fold(OnigCaseFoldType flag, const UChar** pp, const UChar* end,
UChar* lower)
{
return onigenc_mbn_mbc_case_fold(ONIG_ENCODING_BIG5, flag,
pp, end, lower);
}
static int
big5_is_code_ctype(OnigCodePoint code, unsigned int ctype)
{
return onigenc_mb2_is_code_ctype(ONIG_ENCODING_BIG5, code, ctype);
}
static const char BIG5_CAN_BE_TRAIL_TABLE[256] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0
};
#define BIG5_ISMB_FIRST(byte) (EncLen_BIG5[byte] > 1)
#define BIG5_ISMB_TRAIL(byte) BIG5_CAN_BE_TRAIL_TABLE[(byte)]
static UChar*
big5_left_adjust_char_head(const UChar* start, const UChar* s)
{
const UChar *p;
int len;
if (s <= start) return (UChar* )s;
p = s;
if (BIG5_ISMB_TRAIL(*p)) {
while (p > start) {
if (! BIG5_ISMB_FIRST(*--p)) {
p++;
break;
}
}
}
len = enclen(ONIG_ENCODING_BIG5, p);
if (p + len > s) return (UChar* )p;
p += len;
return (UChar* )(p + ((s - p) & ~1));
}
static int
big5_is_allowed_reverse_match(const UChar* s, const UChar* end ARG_UNUSED)
{
const UChar c = *s;
return (BIG5_ISMB_TRAIL(c) ? FALSE : TRUE);
}
OnigEncodingType OnigEncodingBIG5 = {
big5_mbc_enc_len,
"Big5", /* name */
2, /* max enc length */
1, /* min enc length */
onigenc_is_mbc_newline_0x0a,
big5_mbc_to_code,
big5_code_to_mbclen,
big5_code_to_mbc,
big5_mbc_case_fold,
onigenc_ascii_apply_all_case_fold,
onigenc_ascii_get_case_fold_codes_by_str,
onigenc_minimum_property_name_to_ctype,
big5_is_code_ctype,
onigenc_not_support_get_ctype_code_range,
big5_left_adjust_char_head,
big5_is_allowed_reverse_match,
NULL, /* init */
NULL, /* is_initialized */
is_valid_mbc_string,
ENC_FLAG_ASCII_COMPATIBLE|ENC_FLAG_SKIP_OFFSET_1,
0, 0
};
|
