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.c
26 * by moriyoshi koizumi <moriyoshi@php.net> on 4 dec 2002.
27 *
28 */
29
30 #ifdef HAVE_CONFIG_H
31 #include "config.h"
32 #endif
33
34 #include "mbfilter.h"
35 #include "mbfilter_iso8859_2.h"
36 #include "unicode_table_iso8859_2.h"
37
38 static const char *mbfl_encoding_8859_2_aliases[] = {"ISO_8859-2", "latin2", NULL};
39
40 const mbfl_encoding mbfl_encoding_8859_2 = {
41 mbfl_no_encoding_8859_2,
42 "ISO-8859-2",
43 "ISO-8859-2",
44 (const char *(*)[])&mbfl_encoding_8859_2_aliases,
45 NULL,
46 MBFL_ENCTYPE_SBCS,
47 &vtbl_8859_2_wchar,
48 &vtbl_wchar_8859_2
49 };
50
51 const struct mbfl_identify_vtbl vtbl_identify_8859_2 = {
52 mbfl_no_encoding_8859_2,
53 mbfl_filt_ident_common_ctor,
54 mbfl_filt_ident_common_dtor,
55 mbfl_filt_ident_true
56 };
57
58 const struct mbfl_convert_vtbl vtbl_8859_2_wchar = {
59 mbfl_no_encoding_8859_2,
60 mbfl_no_encoding_wchar,
61 mbfl_filt_conv_common_ctor,
62 mbfl_filt_conv_common_dtor,
63 mbfl_filt_conv_8859_2_wchar,
64 mbfl_filt_conv_common_flush
65 };
66
67 const struct mbfl_convert_vtbl vtbl_wchar_8859_2 = {
68 mbfl_no_encoding_wchar,
69 mbfl_no_encoding_8859_2,
70 mbfl_filt_conv_common_ctor,
71 mbfl_filt_conv_common_dtor,
72 mbfl_filt_conv_wchar_8859_2,
73 mbfl_filt_conv_common_flush
74 };
75
76
77 #define CK(statement) do { if ((statement) < 0) return (-1); } while (0)
78
79 /*
80 * ISO-8859-2 => wchar
81 */
mbfl_filt_conv_8859_2_wchar(int c,mbfl_convert_filter * filter)82 int mbfl_filt_conv_8859_2_wchar(int c, mbfl_convert_filter *filter)
83 {
84 int s;
85
86 if (c >= 0 && c < 0xa0) {
87 s = c;
88 } else if (c >= 0xa0 && c < 0x100) {
89 s = iso8859_2_ucs_table[c - 0xa0];
90 if (s <= 0) {
91 s = c;
92 s &= MBFL_WCSPLANE_MASK;
93 s |= MBFL_WCSPLANE_8859_2;
94 }
95 } else {
96 s = c;
97 s &= MBFL_WCSGROUP_MASK;
98 s |= MBFL_WCSGROUP_THROUGH;
99 }
100
101 CK((*filter->output_function)(s, filter->data));
102
103 return c;
104 }
105
106 /*
107 * wchar => ISO-8859-2
108 */
mbfl_filt_conv_wchar_8859_2(int c,mbfl_convert_filter * filter)109 int mbfl_filt_conv_wchar_8859_2(int c, mbfl_convert_filter *filter)
110 {
111 int s, n;
112
113 if (c >= 0 && c < 0xa0) {
114 s = c;
115 } else {
116 s = -1;
117 n = 95;
118 while (n >= 0) {
119 if (c == iso8859_2_ucs_table[n]) {
120 s = 0xa0 + n;
121 break;
122 }
123 n--;
124 }
125 if (s <= 0 && (c & ~MBFL_WCSPLANE_MASK) == MBFL_WCSPLANE_8859_2) {
126 s = c & MBFL_WCSPLANE_MASK;
127 }
128 }
129
130 if (s >= 0) {
131 CK((*filter->output_function)(s, filter->data));
132 } else {
133 CK(mbfl_filt_conv_illegal_output(c, filter));
134 }
135
136 return c;
137 }
138
