Annotation of embedaddon/php/ext/mbstring/libmbfl/filters/mbfilter_ascii.c, revision 1.1.1.1
1.1 misho 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", "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: */
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: */
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:
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: }
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