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 20 Dec 2002. The file
27  * mbfilter.c is included in this package .
28  *
29  */
30 
31 #include "libmbfl/config.h"
32 
33 #ifdef HAVE_STRINGS_H
34 	/* For strcasecmp */
35 	#include <strings.h>
36 #endif
37 
38 #include "mbfl_encoding.h"
39 #include "mbfilter_pass.h"
40 #include "mbfilter_8bit.h"
41 
42 #include "filters/mbfilter_euc_cn.h"
43 #include "filters/mbfilter_hz.h"
44 #include "filters/mbfilter_euc_tw.h"
45 #include "filters/mbfilter_big5.h"
46 #include "filters/mbfilter_uhc.h"
47 #include "filters/mbfilter_euc_kr.h"
48 #include "filters/mbfilter_iso2022_kr.h"
49 #include "filters/mbfilter_sjis.h"
50 #include "filters/mbfilter_sjis_mobile.h"
51 #include "filters/mbfilter_sjis_mac.h"
52 #include "filters/mbfilter_sjis_2004.h"
53 #include "filters/mbfilter_cp51932.h"
54 #include "filters/mbfilter_jis.h"
55 #include "filters/mbfilter_iso2022_jp_ms.h"
56 #include "filters/mbfilter_iso2022jp_2004.h"
57 #include "filters/mbfilter_iso2022jp_mobile.h"
58 #include "filters/mbfilter_euc_jp.h"
59 #include "filters/mbfilter_euc_jp_win.h"
60 #include "filters/mbfilter_euc_jp_2004.h"
61 #include "filters/mbfilter_gb18030.h"
62 #include "filters/mbfilter_cp932.h"
63 #include "filters/mbfilter_cp936.h"
64 #include "filters/mbfilter_cp5022x.h"
65 #include "filters/mbfilter_base64.h"
66 #include "filters/mbfilter_qprint.h"
67 #include "filters/mbfilter_uuencode.h"
68 #include "filters/mbfilter_7bit.h"
69 #include "filters/mbfilter_utf7.h"
70 #include "filters/mbfilter_utf7imap.h"
71 #include "filters/mbfilter_utf8.h"
72 #include "filters/mbfilter_utf8_mobile.h"
73 #include "filters/mbfilter_utf16.h"
74 #include "filters/mbfilter_utf32.h"
75 #include "filters/mbfilter_ucs4.h"
76 #include "filters/mbfilter_ucs2.h"
77 #include "filters/mbfilter_htmlent.h"
78 #include "filters/mbfilter_singlebyte.h"
79 
80 #ifndef HAVE_STRCASECMP
81 #ifdef HAVE_STRICMP
82 #define strcasecmp stricmp
83 #endif
84 #endif
85 
86 
87 static const mbfl_encoding *mbfl_encoding_ptr_list[] = {
88 	&mbfl_encoding_base64,
89 	&mbfl_encoding_uuencode,
90 	&mbfl_encoding_html_ent,
91 	&mbfl_encoding_qprint,
92 	&mbfl_encoding_7bit,
93 	&mbfl_encoding_8bit,
94 	&mbfl_encoding_ucs4,
95 	&mbfl_encoding_ucs4be,
96 	&mbfl_encoding_ucs4le,
97 	&mbfl_encoding_ucs2,
98 	&mbfl_encoding_ucs2be,
99 	&mbfl_encoding_ucs2le,
100 	&mbfl_encoding_utf32,
101 	&mbfl_encoding_utf32be,
102 	&mbfl_encoding_utf32le,
103 	&mbfl_encoding_utf16,
104 	&mbfl_encoding_utf16be,
105 	&mbfl_encoding_utf16le,
106 	&mbfl_encoding_utf8,
107 	&mbfl_encoding_utf7,
108 	&mbfl_encoding_utf7imap,
109 	&mbfl_encoding_ascii,
110 	&mbfl_encoding_euc_jp,
111 	&mbfl_encoding_sjis,
112 	&mbfl_encoding_eucjp_win,
113 	&mbfl_encoding_eucjp2004,
114  	&mbfl_encoding_sjis_docomo,
115  	&mbfl_encoding_sjis_kddi,
116  	&mbfl_encoding_sjis_sb,
117  	&mbfl_encoding_sjis_mac,
118 	&mbfl_encoding_sjis2004,
119 	&mbfl_encoding_utf8_docomo,
120 	&mbfl_encoding_utf8_kddi_a,
121 	&mbfl_encoding_utf8_kddi_b,
122 	&mbfl_encoding_utf8_sb,
123 	&mbfl_encoding_cp932,
124 	&mbfl_encoding_sjiswin,
125 	&mbfl_encoding_cp51932,
126 	&mbfl_encoding_jis,
127 	&mbfl_encoding_2022jp,
128 	&mbfl_encoding_2022jpms,
129 	&mbfl_encoding_gb18030,
130 	&mbfl_encoding_cp1252,
131 	&mbfl_encoding_cp1254,
132 	&mbfl_encoding_8859_1,
133 	&mbfl_encoding_8859_2,
134 	&mbfl_encoding_8859_3,
135 	&mbfl_encoding_8859_4,
136 	&mbfl_encoding_8859_5,
137 	&mbfl_encoding_8859_6,
138 	&mbfl_encoding_8859_7,
139 	&mbfl_encoding_8859_8,
140 	&mbfl_encoding_8859_9,
141 	&mbfl_encoding_8859_10,
142 	&mbfl_encoding_8859_13,
143 	&mbfl_encoding_8859_14,
144 	&mbfl_encoding_8859_15,
145 	&mbfl_encoding_8859_16,
146 	&mbfl_encoding_euc_cn,
147 	&mbfl_encoding_cp936,
148 	&mbfl_encoding_hz,
149 	&mbfl_encoding_euc_tw,
150 	&mbfl_encoding_big5,
151 	&mbfl_encoding_cp950,
152 	&mbfl_encoding_euc_kr,
153 	&mbfl_encoding_uhc,
154 	&mbfl_encoding_2022kr,
155 	&mbfl_encoding_cp1251,
156 	&mbfl_encoding_cp866,
157 	&mbfl_encoding_koi8r,
158 	&mbfl_encoding_koi8u,
159 	&mbfl_encoding_armscii8,
160 	&mbfl_encoding_cp850,
161 	&mbfl_encoding_2022jp_2004,
162 	&mbfl_encoding_2022jp_kddi,
163 	&mbfl_encoding_cp50220,
164 	&mbfl_encoding_cp50221,
165 	&mbfl_encoding_cp50222,
166 	NULL
167 };
168 
mbfl_name2encoding(const char * name)169 const mbfl_encoding *mbfl_name2encoding(const char *name)
170 {
171 	const mbfl_encoding **encoding;
172 
173 	for (encoding = mbfl_encoding_ptr_list; *encoding; encoding++) {
174 		if (strcasecmp((*encoding)->name, name) == 0) {
175 			return *encoding;
176 		}
177 	}
178 
179 	/* search MIME charset name */
180 	for (encoding = mbfl_encoding_ptr_list; *encoding; encoding++) {
181 		if ((*encoding)->mime_name) {
182 			if (strcasecmp((*encoding)->mime_name, name) == 0) {
183 				return *encoding;
184 			}
185 		}
186 	}
187 
188 	/* search aliases */
189 	for (encoding = mbfl_encoding_ptr_list; *encoding; encoding++) {
190 		if ((*encoding)->aliases) {
191 			for (const char **alias = (*encoding)->aliases; *alias; alias++) {
192 				if (strcasecmp(*alias, name) == 0) {
193 					return *encoding;
194 				}
195 			}
196 		}
197 	}
198 
199 	return NULL;
200 }
201 
mbfl_no2encoding(enum mbfl_no_encoding no_encoding)202 const mbfl_encoding *mbfl_no2encoding(enum mbfl_no_encoding no_encoding)
203 {
204 	const mbfl_encoding **encoding;
205 
206 	for (encoding = mbfl_encoding_ptr_list; *encoding; encoding++) {
207 		if ((*encoding)->no_encoding == no_encoding) {
208 			return *encoding;
209 		}
210 	}
211 
212 	return NULL;
213 }
214 
mbfl_name2no_encoding(const char * name)215 enum mbfl_no_encoding mbfl_name2no_encoding(const char *name)
216 {
217 	const mbfl_encoding *encoding = mbfl_name2encoding(name);
218 	return encoding ? encoding->no_encoding : mbfl_no_encoding_invalid;
219 }
220 
mbfl_no_encoding2name(enum mbfl_no_encoding no_encoding)221 const char *mbfl_no_encoding2name(enum mbfl_no_encoding no_encoding)
222 {
223 	const mbfl_encoding *encoding = mbfl_no2encoding(no_encoding);
224 	return encoding ? encoding->name : "";
225 }
226 
mbfl_get_supported_encodings(void)227 const mbfl_encoding **mbfl_get_supported_encodings(void)
228 {
229 	return mbfl_encoding_ptr_list;
230 }
231 
mbfl_no2preferred_mime_name(enum mbfl_no_encoding no_encoding)232 const char *mbfl_no2preferred_mime_name(enum mbfl_no_encoding no_encoding)
233 {
234 	return mbfl_encoding_preferred_mime_name(mbfl_no2encoding(no_encoding));
235 }
236 
mbfl_encoding_preferred_mime_name(const mbfl_encoding * encoding)237 const char *mbfl_encoding_preferred_mime_name(const mbfl_encoding *encoding)
238 {
239 	if (encoding->mime_name && encoding->mime_name[0] != '\0') {
240 		return encoding->mime_name;
241 	}
242 	return NULL;
243 }
244