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_jis.h"
39
40 extern int mbfl_filt_conv_any_jis_flush(mbfl_convert_filter *filter);
41 static int mbfl_filt_ident_2022jp_2004(int c, mbfl_identify_filter *filter);
42
43 const mbfl_encoding mbfl_encoding_2022jp_2004 = {
44 mbfl_no_encoding_2022jp_2004,
45 "ISO-2022-JP-2004",
46 "ISO-2022-JP-2004",
47 NULL,
48 NULL,
49 MBFL_ENCTYPE_MBCS | MBFL_ENCTYPE_SHFTCODE | MBFL_ENCTYPE_GL_UNSAFE,
50 &vtbl_2022jp_2004_wchar,
51 &vtbl_wchar_2022jp_2004
52 };
53
54 const struct mbfl_identify_vtbl vtbl_identify_2022jp_2004 = {
55 mbfl_no_encoding_2022jp_2004,
56 mbfl_filt_ident_common_ctor,
57 mbfl_filt_ident_common_dtor,
58 mbfl_filt_ident_2022jp_2004
59 };
60
61 const struct mbfl_convert_vtbl vtbl_2022jp_2004_wchar = {
62 mbfl_no_encoding_2022jp_2004,
63 mbfl_no_encoding_wchar,
64 mbfl_filt_conv_common_ctor,
65 mbfl_filt_conv_common_dtor,
66 mbfl_filt_conv_jis2004_wchar,
67 mbfl_filt_conv_common_flush
68 };
69
70 const struct mbfl_convert_vtbl vtbl_wchar_2022jp_2004 = {
71 mbfl_no_encoding_wchar,
72 mbfl_no_encoding_2022jp_2004,
73 mbfl_filt_conv_common_ctor,
74 mbfl_filt_conv_common_dtor,
75 mbfl_filt_conv_wchar_jis2004,
76 mbfl_filt_conv_jis2004_flush
77 };
78
mbfl_filt_ident_2022jp_2004(int c,mbfl_identify_filter * filter)79 static int mbfl_filt_ident_2022jp_2004(int c, mbfl_identify_filter *filter)
80 {
81 retry:
82 switch (filter->status & 0xf) {
83 /* case 0x00: ASCII */
84 /* case 0x80: X 0212 */
85 /* case 0x90: X 0213 plane 1 */
86 /* case 0xa0: X 0213 plane 2 */
87 case 0:
88 if (c == 0x1b) {
89 filter->status += 2;
90 } else if (filter->status == 0x80 && c > 0x20 && c < 0x7f) { /* kanji first char */
91 filter->status += 1;
92 } else if (c >= 0 && c < 0x80) { /* latin, CTLs */
93 ;
94 } else {
95 filter->flag = 1; /* bad */
96 }
97 break;
98
99 /* case 0x81: X 0208 second char */
100 case 1:
101 if (c == 0x1b) {
102 filter->status++;
103 } else {
104 filter->status &= ~0xf;
105 if (c < 0x21 || c > 0x7e) { /* bad */
106 filter->flag = 1;
107 }
108 }
109 break;
110
111 /* ESC */
112 case 2:
113 if (c == 0x24) { /* '$' */
114 filter->status++;
115 } else if (c == 0x28) { /* '(' */
116 filter->status += 3;
117 } else {
118 filter->flag = 1; /* bad */
119 filter->status &= ~0xf;
120 goto retry;
121 }
122 break;
123
124 /* ESC $ */
125 case 3:
126 if (c == 0x42) { /* 'B' */
127 filter->status = 0x80;
128 } else if (c == 0x28) { /* '(' */
129 filter->status++;
130 } else {
131 filter->flag = 1; /* bad */
132 filter->status &= ~0xf;
133 goto retry;
134 }
135 break;
136
137 /* ESC $ ( */
138 case 4:
139 if (c == 0x51) { /* JIS X 0213 plane 1 */
140 filter->status = 0x90;
141 } else if (c == 0x50) { /* JIS X 0213 plane 2 */
142 filter->status = 0xa0;
143 } else {
144 filter->flag = 1; /* bad */
145 filter->status &= ~0xf;
146 goto retry;
147 }
148 break;
149
150 /* ESC ( */
151 case 5:
152 if (c == 0x42) { /* 'B' */
153 filter->status = 0;
154 } else {
155 filter->flag = 1; /* bad */
156 filter->status &= ~0xf;
157 goto retry;
158 }
159 break;
160
161 default:
162 filter->status = 0;
163 break;
164 }
165
166 return c;
167 }
168
