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. The file
27 : * mbfilter.c is included in this package .
28 : *
29 : */
30 :
31 : #ifdef HAVE_CONFIG_H
32 : #include "config.h"
33 : #endif
34 :
35 : #include "mbfilter.h"
36 : #include "mbfilter_byte2.h"
37 :
38 : const mbfl_encoding mbfl_encoding_byte2be = {
39 : mbfl_no_encoding_byte2be,
40 : "byte2be",
41 : NULL,
42 : NULL,
43 : NULL,
44 : MBFL_ENCTYPE_SBCS
45 : };
46 :
47 : const mbfl_encoding mbfl_encoding_byte2le = {
48 : mbfl_no_encoding_byte2le,
49 : "byte2le",
50 : NULL,
51 : NULL,
52 : NULL,
53 : MBFL_ENCTYPE_SBCS
54 : };
55 :
56 : const struct mbfl_convert_vtbl vtbl_byte2be_wchar = {
57 : mbfl_no_encoding_byte2be,
58 : mbfl_no_encoding_wchar,
59 : mbfl_filt_conv_common_ctor,
60 : mbfl_filt_conv_common_dtor,
61 : mbfl_filt_conv_byte2be_wchar,
62 : mbfl_filt_conv_common_flush
63 : };
64 :
65 : const struct mbfl_convert_vtbl vtbl_wchar_byte2be = {
66 : mbfl_no_encoding_wchar,
67 : mbfl_no_encoding_byte2be,
68 : mbfl_filt_conv_common_ctor,
69 : mbfl_filt_conv_common_dtor,
70 : mbfl_filt_conv_wchar_byte2be,
71 : mbfl_filt_conv_common_flush };
72 :
73 : const struct mbfl_convert_vtbl vtbl_byte2le_wchar = {
74 : mbfl_no_encoding_byte2le,
75 : mbfl_no_encoding_wchar,
76 : mbfl_filt_conv_common_ctor,
77 : mbfl_filt_conv_common_dtor,
78 : mbfl_filt_conv_byte2le_wchar,
79 : mbfl_filt_conv_common_flush };
80 :
81 : const struct mbfl_convert_vtbl vtbl_wchar_byte2le = {
82 : mbfl_no_encoding_wchar,
83 : mbfl_no_encoding_byte2le,
84 : mbfl_filt_conv_common_ctor,
85 : mbfl_filt_conv_common_dtor,
86 : mbfl_filt_conv_wchar_byte2le,
87 : mbfl_filt_conv_common_flush };
88 :
89 : #define CK(statement) do { if ((statement) < 0) return (-1); } while (0)
90 :
91 : int mbfl_filt_conv_byte2be_wchar(int c, mbfl_convert_filter *filter)
92 0 : {
93 : int n;
94 :
95 0 : if (filter->status == 0) {
96 0 : filter->status = 1;
97 0 : n = (c & 0xff) << 8;
98 0 : filter->cache = n;
99 : } else {
100 0 : filter->status = 0;
101 0 : n = (c & 0xff) | filter->cache;
102 0 : CK((*filter->output_function)(n, filter->data));
103 : }
104 0 : return c;
105 : }
106 :
107 : int mbfl_filt_conv_wchar_byte2be(int c, mbfl_convert_filter *filter)
108 0 : {
109 0 : CK((*filter->output_function)((c >> 8) & 0xff, filter->data));
110 0 : CK((*filter->output_function)(c & 0xff, filter->data));
111 0 : return c;
112 : }
113 :
114 : int mbfl_filt_conv_byte2le_wchar(int c, mbfl_convert_filter *filter)
115 0 : {
116 : int n;
117 :
118 0 : if (filter->status == 0) {
119 0 : filter->status = 1;
120 0 : n = c & 0xff;
121 0 : filter->cache = n;
122 : } else {
123 0 : filter->status = 0;
124 0 : n = ((c & 0xff) << 8) | filter->cache;
125 0 : CK((*filter->output_function)(n, filter->data));
126 : }
127 0 : return c;
128 : }
129 :
130 : int mbfl_filt_conv_wchar_byte2le(int c, mbfl_convert_filter *filter)
131 0 : {
132 0 : CK((*filter->output_function)(c & 0xff, filter->data));
133 0 : CK((*filter->output_function)((c >> 8) & 0xff, filter->data));
134 0 : return c;
135 : }
136 :
137 :
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