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_4.h"
36 #include "unicode_table_iso8859_4.h"
37
38 static const char *mbfl_encoding_8859_4_aliases[] = {"ISO_8859-4", "latin4", NULL};
39
40 const mbfl_encoding mbfl_encoding_8859_4 = {
41 mbfl_no_encoding_8859_4,
42 "ISO-8859-4",
43 "ISO-8859-4",
44 (const char *(*)[])&mbfl_encoding_8859_4_aliases,
45 NULL,
46 MBFL_ENCTYPE_SBCS
47 };
48
49 const struct mbfl_identify_vtbl vtbl_identify_8859_4 = {
50 mbfl_no_encoding_8859_4,
51 mbfl_filt_ident_common_ctor,
52 mbfl_filt_ident_common_dtor,
53 mbfl_filt_ident_true };
54
55 const struct mbfl_convert_vtbl vtbl_8859_4_wchar = {
56 mbfl_no_encoding_8859_4,
57 mbfl_no_encoding_wchar,
58 mbfl_filt_conv_common_ctor,
59 mbfl_filt_conv_common_dtor,
60 mbfl_filt_conv_8859_4_wchar,
61 mbfl_filt_conv_common_flush
62 };
63
64 const struct mbfl_convert_vtbl vtbl_wchar_8859_4 = {
65 mbfl_no_encoding_wchar,
66 mbfl_no_encoding_8859_4,
67 mbfl_filt_conv_common_ctor,
68 mbfl_filt_conv_common_dtor,
69 mbfl_filt_conv_wchar_8859_4,
70 mbfl_filt_conv_common_flush
71 };
72
73 #define CK(statement) do { if ((statement) < 0) return (-1); } while (0)
74
75 /*
76 * ISO-8859-4 => wchar
77 */
mbfl_filt_conv_8859_4_wchar(int c,mbfl_convert_filter * filter)78 int mbfl_filt_conv_8859_4_wchar(int c, mbfl_convert_filter *filter)
79 {
80 int s;
81
82 if (c >= 0 && c < 0xa0) {
83 s = c;
84 } else if (c >= 0xa0 && c < 0x100) {
85 s = iso8859_4_ucs_table[c - 0xa0];
86 if (s <= 0) {
87 s = c;
88 s &= MBFL_WCSPLANE_MASK;
89 s |= MBFL_WCSPLANE_8859_4;
90 }
91 } else {
92 s = c;
93 s &= MBFL_WCSGROUP_MASK;
94 s |= MBFL_WCSGROUP_THROUGH;
95 }
96
97 CK((*filter->output_function)(s, filter->data));
98
99 return c;
100 }
101
102 /*
103 * wchar => ISO-8859-4
104 */
mbfl_filt_conv_wchar_8859_4(int c,mbfl_convert_filter * filter)105 int mbfl_filt_conv_wchar_8859_4(int c, mbfl_convert_filter *filter)
106 {
107 int s, n;
108
109 if (c >= 0 && c < 0xa0) {
110 s = c;
111 } else {
112 s = -1;
113 n = 95;
114 while (n >= 0) {
115 if (c == iso8859_4_ucs_table[n]) {
116 s = 0xa0 + n;
117 break;
118 }
119 n--;
120 }
121 if (s <= 0 && (c & ~MBFL_WCSPLANE_MASK) == MBFL_WCSPLANE_8859_4) {
122 s = c & MBFL_WCSPLANE_MASK;
123 }
124 }
125
126 if (s >= 0) {
127 CK((*filter->output_function)(s, filter->data));
128 } else {
129 if (filter->illegal_mode != MBFL_OUTPUTFILTER_ILLEGAL_MODE_NONE) {
130 CK(mbfl_filt_conv_illegal_output(c, filter));
131 }
132 }
133
134 return c;
135 }
136
137
138
