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_ascii.h"
37
38 static int mbfl_filt_ident_ascii(int c, mbfl_identify_filter *filter);
39
40 static const char *mbfl_encoding_ascii_aliases[] = {"ANSI_X3.4-1968", "iso-ir-6", "ANSI_X3.4-1986", "ISO_646.irv:1991", "US-ASCII", "ISO646-US", "us", "IBM367", "IBM-367", "cp367", "csASCII", NULL};
41
42 const mbfl_encoding mbfl_encoding_ascii = {
43 mbfl_no_encoding_ascii,
44 "ASCII",
45 "US-ASCII", /* preferred MIME name */
46 (const char *(*)[])&mbfl_encoding_ascii_aliases,
47 NULL,
48 MBFL_ENCTYPE_SBCS
49 };
50
51 const struct mbfl_identify_vtbl vtbl_identify_ascii = {
52 mbfl_no_encoding_ascii,
53 mbfl_filt_ident_common_ctor,
54 mbfl_filt_ident_common_dtor,
55 mbfl_filt_ident_ascii
56 };
57
58 const struct mbfl_convert_vtbl vtbl_ascii_wchar = {
59 mbfl_no_encoding_ascii,
60 mbfl_no_encoding_wchar,
61 mbfl_filt_conv_common_ctor,
62 mbfl_filt_conv_common_dtor,
63 mbfl_filt_conv_ascii_wchar,
64 mbfl_filt_conv_common_flush
65 };
66
67 const struct mbfl_convert_vtbl vtbl_wchar_ascii = {
68 mbfl_no_encoding_wchar,
69 mbfl_no_encoding_ascii,
70 mbfl_filt_conv_common_ctor,
71 mbfl_filt_conv_common_dtor,
72 mbfl_filt_conv_wchar_ascii,
73 mbfl_filt_conv_common_flush
74 };
75
76 #define CK(statement) do { if ((statement) < 0) return (-1); } while (0)
77
78 /*
79 * ASCII => wchar
80 */
mbfl_filt_conv_ascii_wchar(int c,mbfl_convert_filter * filter)81 int mbfl_filt_conv_ascii_wchar(int c, mbfl_convert_filter *filter)
82 {
83 return (*filter->output_function)(c, filter->data);
84 }
85
86
87 /*
88 * wchar => ASCII
89 */
mbfl_filt_conv_wchar_ascii(int c,mbfl_convert_filter * filter)90 int mbfl_filt_conv_wchar_ascii(int c, mbfl_convert_filter *filter)
91 {
92 if (c >= 0 && c < 0x80) {
93 CK((*filter->output_function)(c, filter->data));
94 } else {
95 if (filter->illegal_mode != MBFL_OUTPUTFILTER_ILLEGAL_MODE_NONE) {
96 CK(mbfl_filt_conv_illegal_output(c, filter));
97 }
98 }
99
100 return c;
101 }
102
mbfl_filt_ident_ascii(int c,mbfl_identify_filter * filter)103 static int mbfl_filt_ident_ascii(int c, mbfl_identify_filter *filter)
104 {
105 if (c >= 0x20 && c < 0x80) {
106 ;
107 } else if (c == 0x0d || c == 0x0a || c == 0x09 || c == 0) { /* CR or LF or HTAB or null */
108 ;
109 } else {
110 filter->flag = 1;
111 }
112
113 return c;
114 }
115
