1 /*
2 * "streamable kanji code filter and converter"
3 * Copyright (c) 1998-2002 HappySize, Inc. All rights reserved.
4 *
5 * LICENSE NOTICES
6 *
7 * This file is part of "streamable kanji code filter and converter",
8 * which is distributed under the terms of GNU Lesser General Public
9 * License (version 2) as published by the Free Software Foundation.
10 *
11 * This software is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with "streamable kanji code filter and converter";
18 * if not, write to the Free Software Foundation, Inc., 59 Temple Place,
19 * Suite 330, Boston, MA 02111-1307 USA
20 *
21 * The author of this file:
22 *
23 */
24 /*
25 * The source code included in this files was separated from mbfilter_jis.c
26 * by rui hirokawa <hirokawa@php.net> on 18 aug 2011.
27 *
28 */
29
30 #ifdef HAVE_CONFIG_H
31 #include "config.h"
32 #endif
33
34 #include "mbfilter.h"
35 #include "mbfilter_iso2022jp_2004.h"
36 #include "mbfilter_sjis_2004.h"
37
38 #include "unicode_table_jis2004.h"
39 #include "unicode_table_jis.h"
40
41 extern int mbfl_filt_conv_any_jis_flush(mbfl_convert_filter *filter);
42 static int mbfl_filt_ident_2022jp_2004(int c, mbfl_identify_filter *filter);
43
44 const mbfl_encoding mbfl_encoding_2022jp_2004 = {
45 mbfl_no_encoding_2022jp_2004,
46 "ISO-2022-JP-2004",
47 "ISO-2022-JP-2004",
48 NULL,
49 NULL,
50 MBFL_ENCTYPE_MBCS | MBFL_ENCTYPE_SHFTCODE | MBFL_ENCTYPE_GL_UNSAFE
51 };
52
53 const struct mbfl_identify_vtbl vtbl_identify_2022jp_2004 = {
54 mbfl_no_encoding_2022jp_2004,
55 mbfl_filt_ident_common_ctor,
56 mbfl_filt_ident_common_dtor,
57 mbfl_filt_ident_2022jp_2004
58 };
59
60 const struct mbfl_convert_vtbl vtbl_2022jp_2004_wchar = {
61 mbfl_no_encoding_2022jp_2004,
62 mbfl_no_encoding_wchar,
63 mbfl_filt_conv_common_ctor,
64 mbfl_filt_conv_common_dtor,
65 mbfl_filt_conv_jis2004_wchar,
66 mbfl_filt_conv_common_flush
67 };
68
69 const struct mbfl_convert_vtbl vtbl_wchar_2022jp_2004 = {
70 mbfl_no_encoding_wchar,
71 mbfl_no_encoding_2022jp_2004,
72 mbfl_filt_conv_common_ctor,
73 mbfl_filt_conv_common_dtor,
74 mbfl_filt_conv_wchar_jis2004,
75 mbfl_filt_conv_jis2004_flush
76 };
77
78 static int mbfl_filt_ident_2022jp_2004(int c, mbfl_identify_filter *filter)
79 {
80 retry:
81 switch (filter->status & 0xf) {
82 /* case 0x00: ASCII */
83 /* case 0x80: X 0212 */
84 /* case 0x90: X 0213 plane 1 */
85 /* case 0xa0: X 0213 plane 2 */
86 case 0:
87 if (c == 0x1b) {
88 filter->status += 2;
89 } else if (filter->status == 0x80 && c > 0x20 && c < 0x7f) { /* kanji first char */
90 filter->status += 1;
91 } else if (c >= 0 && c < 0x80) { /* latin, CTLs */
92 ;
93 } else {
94 filter->flag = 1; /* bad */
95 }
96 break;
97
98 /* case 0x81: X 0208 second char */
99 case 1:
100 if (c == 0x1b) {
101 filter->status++;
102 } else {
103 filter->status &= ~0xf;
104 if (c < 0x21 || c > 0x7e) { /* bad */
105 filter->flag = 1;
106 }
107 }
108 break;
109
110 /* ESC */
111 case 2:
112 if (c == 0x24) { /* '$' */
113 filter->status++;
114 } else if (c == 0x28) { /* '(' */
115 filter->status += 3;
116 } else {
117 filter->flag = 1; /* bad */
118 filter->status &= ~0xf;
119 goto retry;
120 }
121 break;
122
123 /* ESC $ */
124 case 3:
125 if (c == 0x42) { /* 'B' */
126 filter->status = 0x80;
127 } else if (c == 0x28) { /* '(' */
128 filter->status++;
129 } else {
130 filter->flag = 1; /* bad */
131 filter->status &= ~0xf;
132 goto retry;
133 }
134 break;
135
136 /* ESC $ ( */
137 case 4:
138 if (c == 0x51) { /* JIS X 0213 plane 1 */
139 filter->status = 0x90;
140 } else if (c == 0x50) { /* JIS X 0213 plane 2 */
141 filter->status = 0xa0;
142 } else {
143 filter->flag = 1; /* bad */
144 filter->status &= ~0xf;
145 goto retry;
146 }
147 break;
148
149 /* ESC ( */
150 case 5:
151 if (c == 0x42) { /* 'B' */
152 filter->status = 0;
153 } else {
154 filter->flag = 1; /* bad */
155 filter->status &= ~0xf;
156 goto retry;
157 }
158 break;
159
160 default:
161 filter->status = 0;
162 break;
163 }
164
165 return c;
166 }
167
168