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1 /*
2  * Copyright (C) 2007 Esmertec AG.
3  * Copyright (C) 2007 The Android Open Source Project
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at
8  *
9  *      http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 
18 package com.android.messaging.mmslib.pdu;
19 
20 import androidx.collection.SimpleArrayMap;
21 import android.util.SparseArray;
22 
23 import java.io.UnsupportedEncodingException;
24 
25 public class CharacterSets {
26     /**
27      * IANA assigned MIB enum numbers.
28      *
29      * From wap-230-wsp-20010705-a.pdf
30      * Any-charset = <Octet 128>
31      * Equivalent to the special RFC2616 charset value "*"
32      *
33      * Link to all the charsets: http://www.iana.org/assignments/character-sets/character-sets.xhtml
34      * Use Charset.availableCharsets() to see if a potential charset is supported in java:
35      *     private void dumpCharsets() {
36      *         logvv("dumpCharsets");
37      *         SortedMap<String, Charset> charsets = Charset.availableCharsets();
38      *         for (Entry<String, Charset> entry : charsets.entrySet()) {
39      *             String key = entry.getKey();
40      *             Charset value = entry.getValue();
41      *             logvv("charset key: " + key + " value: " + value);
42      *         }
43      *     }
44      *
45      * As of March 21, 2014, here is the list from dumpCharsets:
46      * Adobe-Standard-Encoding value: java.nio.charset.CharsetICU[Adobe-Standard-Encoding]
47      * Big5 value: java.nio.charset.CharsetICU[Big5]
48      * Big5-HKSCS value: java.nio.charset.CharsetICU[Big5-HKSCS]
49      * BOCU-1 value: java.nio.charset.CharsetICU[BOCU-1]
50      * CESU-8 value: java.nio.charset.CharsetICU[CESU-8]
51      * cp1363 value: java.nio.charset.CharsetICU[cp1363]
52      * cp851 value: java.nio.charset.CharsetICU[cp851]
53      * cp864 value: java.nio.charset.CharsetICU[cp864]
54      * EUC-JP value: java.nio.charset.CharsetICU[EUC-JP]
55      * EUC-KR value: java.nio.charset.CharsetICU[EUC-KR]
56      * GB18030 value: java.nio.charset.CharsetICU[GB18030]
57      * GBK value: java.nio.charset.CharsetICU[GBK]
58      * hp-roman8 value: java.nio.charset.CharsetICU[hp-roman8]
59      * HZ-GB-2312 value: java.nio.charset.CharsetICU[HZ-GB-2312]
60      * IBM-Thai value: java.nio.charset.CharsetICU[IBM-Thai]
61      * IBM00858 value: java.nio.charset.CharsetICU[IBM00858]
62      * IBM01140 value: java.nio.charset.CharsetICU[IBM01140]
63      * IBM01141 value: java.nio.charset.CharsetICU[IBM01141]
64      * IBM01142 value: java.nio.charset.CharsetICU[IBM01142]
65      * IBM01143 value: java.nio.charset.CharsetICU[IBM01143]
66      * IBM01144 value: java.nio.charset.CharsetICU[IBM01144]
67      * IBM01145 value: java.nio.charset.CharsetICU[IBM01145]
68      * IBM01146 value: java.nio.charset.CharsetICU[IBM01146]
69      * IBM01147 value: java.nio.charset.CharsetICU[IBM01147]
70      * IBM01148 value: java.nio.charset.CharsetICU[IBM01148]
71      * IBM01149 value: java.nio.charset.CharsetICU[IBM01149]
72      * IBM037 value: java.nio.charset.CharsetICU[IBM037]
73      * IBM1026 value: java.nio.charset.CharsetICU[IBM1026]
74      * IBM1047 value: java.nio.charset.CharsetICU[IBM1047]
75      * IBM273 value: java.nio.charset.CharsetICU[IBM273]
76      * IBM277 value: java.nio.charset.CharsetICU[IBM277]
77      * IBM278 value: java.nio.charset.CharsetICU[IBM278]
78      * IBM280 value: java.nio.charset.CharsetICU[IBM280]
79      * IBM284 value: java.nio.charset.CharsetICU[IBM284]
80      * IBM285 value: java.nio.charset.CharsetICU[IBM285]
81      * IBM290 value: java.nio.charset.CharsetICU[IBM290]
82      * IBM297 value: java.nio.charset.CharsetICU[IBM297]
83      * IBM420 value: java.nio.charset.CharsetICU[IBM420]
84      * IBM424 value: java.nio.charset.CharsetICU[IBM424]
85      * IBM437 value: java.nio.charset.CharsetICU[IBM437]
86      * IBM500 value: java.nio.charset.CharsetICU[IBM500]
87      * IBM775 value: java.nio.charset.CharsetICU[IBM775]
88      * IBM850 value: java.nio.charset.CharsetICU[IBM850]
89      * IBM852 value: java.nio.charset.CharsetICU[IBM852]
90      * IBM855 value: java.nio.charset.CharsetICU[IBM855]
91      * IBM857 value: java.nio.charset.CharsetICU[IBM857]
92      * IBM860 value: java.nio.charset.CharsetICU[IBM860]
93      * IBM861 value: java.nio.charset.CharsetICU[IBM861]
94      * IBM862 value: java.nio.charset.CharsetICU[IBM862]
95      * IBM863 value: java.nio.charset.CharsetICU[IBM863]
96      * IBM865 value: java.nio.charset.CharsetICU[IBM865]
97      * IBM866 value: java.nio.charset.CharsetICU[IBM866]
98      * IBM868 value: java.nio.charset.CharsetICU[IBM868]
99      * IBM869 value: java.nio.charset.CharsetICU[IBM869]
100      * IBM870 value: java.nio.charset.CharsetICU[IBM870]
101      * IBM871 value: java.nio.charset.CharsetICU[IBM871]
102      * IBM918 value: java.nio.charset.CharsetICU[IBM918]
103      * ISO-2022-CN value: java.nio.charset.CharsetICU[ISO-2022-CN]
104      * ISO-2022-CN-EXT value: java.nio.charset.CharsetICU[ISO-2022-CN-EXT]
105      * ISO-2022-JP value: java.nio.charset.CharsetICU[ISO-2022-JP]
106      * ISO-2022-JP-1 value: java.nio.charset.CharsetICU[ISO-2022-JP-1]
107      * ISO-2022-JP-2 value: java.nio.charset.CharsetICU[ISO-2022-JP-2]
108      * ISO-2022-KR value: java.nio.charset.CharsetICU[ISO-2022-KR]
109      * ISO-8859-1 value: java.nio.charset.CharsetICU[ISO-8859-1]
110      * ISO-8859-10 value: java.nio.charset.CharsetICU[ISO-8859-10]
111      * ISO-8859-13 value: java.nio.charset.CharsetICU[ISO-8859-13]
112      * ISO-8859-14 value: java.nio.charset.CharsetICU[ISO-8859-14]
113      * ISO-8859-15 value: java.nio.charset.CharsetICU[ISO-8859-15]
114      * ISO-8859-2 value: java.nio.charset.CharsetICU[ISO-8859-2]
115      * ISO-8859-3 value: java.nio.charset.CharsetICU[ISO-8859-3]
116      * ISO-8859-4 value: java.nio.charset.CharsetICU[ISO-8859-4]
117      * ISO-8859-5 value: java.nio.charset.CharsetICU[ISO-8859-5]
118      * ISO-8859-6 value: java.nio.charset.CharsetICU[ISO-8859-6]
119      * ISO-8859-7 value: java.nio.charset.CharsetICU[ISO-8859-7]
120      * ISO-8859-8 value: java.nio.charset.CharsetICU[ISO-8859-8]
121      * ISO-8859-9 value: java.nio.charset.CharsetICU[ISO-8859-9]
122      * KOI8-R value: java.nio.charset.CharsetICU[KOI8-R]
123      * KOI8-U value: java.nio.charset.CharsetICU[KOI8-U]
124      * macintosh value: java.nio.charset.CharsetICU[macintosh]
125      * SCSU value: java.nio.charset.CharsetICU[SCSU]
126      * Shift_JIS value: java.nio.charset.CharsetICU[Shift_JIS]
127      * TIS-620 value: java.nio.charset.CharsetICU[TIS-620]
128      * US-ASCII value: java.nio.charset.CharsetICU[US-ASCII]
129      * UTF-16 value: java.nio.charset.CharsetICU[UTF-16]
130      * UTF-16BE value: java.nio.charset.CharsetICU[UTF-16BE]
131      * UTF-16LE value: java.nio.charset.CharsetICU[UTF-16LE]
132      * UTF-32 value: java.nio.charset.CharsetICU[UTF-32]
133      * UTF-32BE value: java.nio.charset.CharsetICU[UTF-32BE]
134      * UTF-32LE value: java.nio.charset.CharsetICU[UTF-32LE]
135      * UTF-7 value: java.nio.charset.CharsetICU[UTF-7]
136      * UTF-8 value: java.nio.charset.CharsetICU[UTF-8]
137      * windows-1250 value: java.nio.charset.CharsetICU[windows-1250]
138      * windows-1251 value: java.nio.charset.CharsetICU[windows-1251]
139      * windows-1252 value: java.nio.charset.CharsetICU[windows-1252]
140      * windows-1253 value: java.nio.charset.CharsetICU[windows-1253]
141      * windows-1254 value: java.nio.charset.CharsetICU[windows-1254]
142      * windows-1255 value: java.nio.charset.CharsetICU[windows-1255]
143      * windows-1256 value: java.nio.charset.CharsetICU[windows-1256]
144      * windows-1257 value: java.nio.charset.CharsetICU[windows-1257]
145      * windows-1258 value: java.nio.charset.CharsetICU[windows-1258]
146      * x-compound-text value: java.nio.charset.CharsetICU[x-compound-text]
147      * x-ebcdic-xml-us value: java.nio.charset.CharsetICU[x-ebcdic-xml-us]
148      * x-gsm-03.38-2000 value: java.nio.charset.CharsetICU[x-gsm-03.38-2000]
149      * x-ibm-1047-s390 value: java.nio.charset.CharsetICU[x-ibm-1047-s390]
150      * x-ibm-1125_P100-1997 value: java.nio.charset.CharsetICU[x-ibm-1125_P100-1997]
151      * x-ibm-1129_P100-1997 value: java.nio.charset.CharsetICU[x-ibm-1129_P100-1997]
152      * x-ibm-1130_P100-1997 value: java.nio.charset.CharsetICU[x-ibm-1130_P100-1997]
153      * x-ibm-1131_P100-1997 value: java.nio.charset.CharsetICU[x-ibm-1131_P100-1997]
154      * x-ibm-1132_P100-1998 value: java.nio.charset.CharsetICU[x-ibm-1132_P100-1998]
155      * x-ibm-1133_P100-1997 value: java.nio.charset.CharsetICU[x-ibm-1133_P100-1997]
156      * x-ibm-1137_P100-1999 value: java.nio.charset.CharsetICU[x-ibm-1137_P100-1999]
157      * x-ibm-1140-s390 value: java.nio.charset.CharsetICU[x-ibm-1140-s390]
158      * x-ibm-1141-s390 value: java.nio.charset.CharsetICU[x-ibm-1141-s390]
159      * x-ibm-1142-s390 value: java.nio.charset.CharsetICU[x-ibm-1142-s390]
160      * x-ibm-1143-s390 value: java.nio.charset.CharsetICU[x-ibm-1143-s390]
161      * x-ibm-1144-s390 value: java.nio.charset.CharsetICU[x-ibm-1144-s390]
162      * x-ibm-1145-s390 value: java.nio.charset.CharsetICU[x-ibm-1145-s390]
163      * x-ibm-1146-s390 value: java.nio.charset.CharsetICU[x-ibm-1146-s390]
164      * x-ibm-1147-s390 value: java.nio.charset.CharsetICU[x-ibm-1147-s390]
165      * x-ibm-1148-s390 value: java.nio.charset.CharsetICU[x-ibm-1148-s390]
166      * x-ibm-1149-s390 value: java.nio.charset.CharsetICU[x-ibm-1149-s390]
167      * x-ibm-1153-s390 value: java.nio.charset.CharsetICU[x-ibm-1153-s390]
168      * x-ibm-1154_P100-1999 value: java.nio.charset.CharsetICU[x-ibm-1154_P100-1999]
169      * x-ibm-1155_P100-1999 value: java.nio.charset.CharsetICU[x-ibm-1155_P100-1999]
170      * x-ibm-1156_P100-1999 value: java.nio.charset.CharsetICU[x-ibm-1156_P100-1999]
171      * x-ibm-1157_P100-1999 value: java.nio.charset.CharsetICU[x-ibm-1157_P100-1999]
172      * x-ibm-1158_P100-1999 value: java.nio.charset.CharsetICU[x-ibm-1158_P100-1999]
173      * x-ibm-1160_P100-1999 value: java.nio.charset.CharsetICU[x-ibm-1160_P100-1999]
174      * x-ibm-1162_P100-1999 value: java.nio.charset.CharsetICU[x-ibm-1162_P100-1999]
175      * x-ibm-1164_P100-1999 value: java.nio.charset.CharsetICU[x-ibm-1164_P100-1999]
176      * x-ibm-1250_P100-1995 value: java.nio.charset.CharsetICU[x-ibm-1250_P100-1995]
177      * x-ibm-1251_P100-1995 value: java.nio.charset.CharsetICU[x-ibm-1251_P100-1995]
178      * x-ibm-1252_P100-2000 value: java.nio.charset.CharsetICU[x-ibm-1252_P100-2000]
179      * x-ibm-1253_P100-1995 value: java.nio.charset.CharsetICU[x-ibm-1253_P100-1995]
180      * x-ibm-1254_P100-1995 value: java.nio.charset.CharsetICU[x-ibm-1254_P100-1995]
181      * x-ibm-1255_P100-1995 value: java.nio.charset.CharsetICU[x-ibm-1255_P100-1995]
182      * x-ibm-1256_P110-1997 value: java.nio.charset.CharsetICU[x-ibm-1256_P110-1997]
183      * x-ibm-1257_P100-1995 value: java.nio.charset.CharsetICU[x-ibm-1257_P100-1995]
184      * x-ibm-1258_P100-1997 value: java.nio.charset.CharsetICU[x-ibm-1258_P100-1997]
185      * x-ibm-12712-s390 value: java.nio.charset.CharsetICU[x-ibm-12712-s390]
186      * x-ibm-12712_P100-1998 value: java.nio.charset.CharsetICU[x-ibm-12712_P100-1998]
187      * x-ibm-1373_P100-2002 value: java.nio.charset.CharsetICU[x-ibm-1373_P100-2002]
188      * x-ibm-1383_P110-1999 value: java.nio.charset.CharsetICU[x-ibm-1383_P110-1999]
189      * x-ibm-1386_P100-2001 value: java.nio.charset.CharsetICU[x-ibm-1386_P100-2001]
190      * x-ibm-16684_P110-2003 value: java.nio.charset.CharsetICU[x-ibm-16684_P110-2003]
191      * x-ibm-16804-s390 value: java.nio.charset.CharsetICU[x-ibm-16804-s390]
192      * x-ibm-16804_X110-1999 value: java.nio.charset.CharsetICU[x-ibm-16804_X110-1999]
193      * x-ibm-25546 value: java.nio.charset.CharsetICU[x-ibm-25546]
194      * x-ibm-33722_P12A_P12A-2009_U2 value:
195      *     java.nio.charset.CharsetICU[x-ibm-33722_P12A_P12A-2009_U2]
196      * x-ibm-37-s390 value: java.nio.charset.CharsetICU[x-ibm-37-s390]
197      * x-ibm-4517_P100-2005 value: java.nio.charset.CharsetICU[x-ibm-4517_P100-2005]
198      * x-ibm-4899_P100-1998 value: java.nio.charset.CharsetICU[x-ibm-4899_P100-1998]
199      * x-ibm-4909_P100-1999 value: java.nio.charset.CharsetICU[x-ibm-4909_P100-1999]
200      * x-ibm-4971_P100-1999 value: java.nio.charset.CharsetICU[x-ibm-4971_P100-1999]
201      * x-ibm-5123_P100-1999 value: java.nio.charset.CharsetICU[x-ibm-5123_P100-1999]
202      * x-ibm-5351_P100-1998 value: java.nio.charset.CharsetICU[x-ibm-5351_P100-1998]
203      * x-ibm-5352_P100-1998 value: java.nio.charset.CharsetICU[x-ibm-5352_P100-1998]
204      * x-ibm-5353_P100-1998 value: java.nio.charset.CharsetICU[x-ibm-5353_P100-1998]
205      * x-ibm-5478_P100-1995 value: java.nio.charset.CharsetICU[x-ibm-5478_P100-1995]
206      * x-ibm-803_P100-1999 value: java.nio.charset.CharsetICU[x-ibm-803_P100-1999]
207      * x-ibm-813_P100-1995 value: java.nio.charset.CharsetICU[x-ibm-813_P100-1995]
208      * x-ibm-8482_P100-1999 value: java.nio.charset.CharsetICU[x-ibm-8482_P100-1999]
209      * x-ibm-901_P100-1999 value: java.nio.charset.CharsetICU[x-ibm-901_P100-1999]
210      * x-ibm-902_P100-1999 value: java.nio.charset.CharsetICU[x-ibm-902_P100-1999]
211      * x-ibm-9067_X100-2005 value: java.nio.charset.CharsetICU[x-ibm-9067_X100-2005]
212      * x-ibm-916_P100-1995 value: java.nio.charset.CharsetICU[x-ibm-916_P100-1995]
213      * x-IBM1006 value: java.nio.charset.CharsetICU[x-IBM1006]
214      * x-IBM1025 value: java.nio.charset.CharsetICU[x-IBM1025]
215      * x-IBM1097 value: java.nio.charset.CharsetICU[x-IBM1097]
216      * x-IBM1098 value: java.nio.charset.CharsetICU[x-IBM1098]
217      * x-IBM1112 value: java.nio.charset.CharsetICU[x-IBM1112]
218      * x-IBM1122 value: java.nio.charset.CharsetICU[x-IBM1122]
219      * x-IBM1123 value: java.nio.charset.CharsetICU[x-IBM1123]
220      * x-IBM1124 value: java.nio.charset.CharsetICU[x-IBM1124]
221      * x-IBM1153 value: java.nio.charset.CharsetICU[x-IBM1153]
222      * x-IBM1363 value: java.nio.charset.CharsetICU[x-IBM1363]
223      * x-IBM1364 value: java.nio.charset.CharsetICU[x-IBM1364]
224      * x-IBM1371 value: java.nio.charset.CharsetICU[x-IBM1371]
225      * x-IBM1388 value: java.nio.charset.CharsetICU[x-IBM1388]
226      * x-IBM1390 value: java.nio.charset.CharsetICU[x-IBM1390]
227      * x-IBM1399 value: java.nio.charset.CharsetICU[x-IBM1399]
228      * x-IBM33722 value: java.nio.charset.CharsetICU[x-IBM33722]
229      * x-IBM720 value: java.nio.charset.CharsetICU[x-IBM720]
230      * x-IBM737 value: java.nio.charset.CharsetICU[x-IBM737]
231      * x-IBM856 value: java.nio.charset.CharsetICU[x-IBM856]
232      * x-IBM867 value: java.nio.charset.CharsetICU[x-IBM867]
233      * x-IBM875 value: java.nio.charset.CharsetICU[x-IBM875]
234      * x-IBM922 value: java.nio.charset.CharsetICU[x-IBM922]
235      * x-IBM930 value: java.nio.charset.CharsetICU[x-IBM930]
236      * x-IBM933 value: java.nio.charset.CharsetICU[x-IBM933]
237      * x-IBM935 value: java.nio.charset.CharsetICU[x-IBM935]
238      * x-IBM937 value: java.nio.charset.CharsetICU[x-IBM937]
239      * x-IBM939 value: java.nio.charset.CharsetICU[x-IBM939]
240      * x-IBM942 value: java.nio.charset.CharsetICU[x-IBM942]
241      * x-IBM943 value: java.nio.charset.CharsetICU[x-IBM943]
242      * x-IBM949 value: java.nio.charset.CharsetICU[x-IBM949]
243      * x-IBM949C value: java.nio.charset.CharsetICU[x-IBM949C]
244      * x-IBM950 value: java.nio.charset.CharsetICU[x-IBM950]
245      * x-IBM954 value: java.nio.charset.CharsetICU[x-IBM954]
246      * x-IBM964 value: java.nio.charset.CharsetICU[x-IBM964]
247      * x-IBM970 value: java.nio.charset.CharsetICU[x-IBM970]
248      * x-IBM971 value: java.nio.charset.CharsetICU[x-IBM971]
249      * x-IMAP-mailbox-name value: java.nio.charset.CharsetICU[x-IMAP-mailbox-name]
250      * x-iscii-be value: java.nio.charset.CharsetICU[x-iscii-be]
251      * x-iscii-gu value: java.nio.charset.CharsetICU[x-iscii-gu]
252      * x-iscii-ka value: java.nio.charset.CharsetICU[x-iscii-ka]
253      * x-iscii-ma value: java.nio.charset.CharsetICU[x-iscii-ma]
254      * x-iscii-or value: java.nio.charset.CharsetICU[x-iscii-or]
255      * x-iscii-pa value: java.nio.charset.CharsetICU[x-iscii-pa]
256      * x-iscii-ta value: java.nio.charset.CharsetICU[x-iscii-ta]
257      * x-iscii-te value: java.nio.charset.CharsetICU[x-iscii-te]
258      * x-ISCII91 value: java.nio.charset.CharsetICU[x-ISCII91]
259      * x-ISO-2022-CN-CNS value: java.nio.charset.CharsetICU[x-ISO-2022-CN-CNS]
260      * x-iso-8859-11 value: java.nio.charset.CharsetICU[x-iso-8859-11]
261      * x-JavaUnicode value: java.nio.charset.CharsetICU[x-JavaUnicode]
262      * x-JavaUnicode2 value: java.nio.charset.CharsetICU[x-JavaUnicode2]
263      * x-JIS7 value: java.nio.charset.CharsetICU[x-JIS7]
264      * x-JIS8 value: java.nio.charset.CharsetICU[x-JIS8]
265      * x-LMBCS-1 value: java.nio.charset.CharsetICU[x-LMBCS-1]
266      * x-mac-centraleurroman value: java.nio.charset.CharsetICU[x-mac-centraleurroman]
267      * x-mac-cyrillic value: java.nio.charset.CharsetICU[x-mac-cyrillic]
268      * x-mac-greek value: java.nio.charset.CharsetICU[x-mac-greek]
269      * x-mac-turkish value: java.nio.charset.CharsetICU[x-mac-turkish]
270      * x-MS950-HKSCS value: java.nio.charset.CharsetICU[x-MS950-HKSCS]
271      * x-UnicodeBig value: java.nio.charset.CharsetICU[x-UnicodeBig]
272      * x-UTF-16LE-BOM value: java.nio.charset.CharsetICU[x-UTF-16LE-BOM]
273      * x-UTF16_OppositeEndian value: java.nio.charset.CharsetICU[x-UTF16_OppositeEndian]
274      * x-UTF16_PlatformEndian value: java.nio.charset.CharsetICU[x-UTF16_PlatformEndian]
275      * x-UTF32_OppositeEndian value: java.nio.charset.CharsetICU[x-UTF32_OppositeEndian]
276      * x-UTF32_PlatformEndian value: java.nio.charset.CharsetICU[x-UTF32_PlatformEndian]
277      *
278      */
279     public static final int ANY_CHARSET = 0x00;
280     public static final int US_ASCII    = 0x03;
281     public static final int ISO_8859_1  = 0x04;
282     public static final int ISO_8859_2  = 0x05;
283     public static final int ISO_8859_3  = 0x06;
284     public static final int ISO_8859_4  = 0x07;
285     public static final int ISO_8859_5  = 0x08;
286     public static final int ISO_8859_6  = 0x09;
287     public static final int ISO_8859_7  = 0x0A;
288     public static final int ISO_8859_8  = 0x0B;
289     public static final int ISO_8859_9  = 0x0C;
290     public static final int SHIFT_JIS   = 0x11;
291     public static final int EUC_JP      = 0x12;
292     public static final int EUC_KR      = 0x26;
293     public static final int ISO_2022_JP = 0x27;
294     public static final int ISO_2022_JP_2 = 0x28;
295     public static final int UTF_8       = 0x6A;
296     public static final int GBK         = 0x71;
297     public static final int GB18030     = 0x72;
298     public static final int GB2312      = 0x07E9;
299     public static final int BIG5        = 0x07EA;
300     public static final int UCS2        = 0x03E8;
301     public static final int UTF_16      = 0x03F7;
302     public static final int HZ_GB_2312  = 0x0825;
303 
304     /**
305      * If the encoding of given data is unsupported, use UTF_8 to decode it.
306      */
307     public static final int DEFAULT_CHARSET = UTF_8;
308 
309     /**
310      * Array of MIB enum numbers.
311      */
312     private static final int[] MIBENUM_NUMBERS = {
313             ANY_CHARSET,
314             US_ASCII,
315             ISO_8859_1,
316             ISO_8859_2,
317             ISO_8859_3,
318             ISO_8859_4,
319             ISO_8859_5,
320             ISO_8859_6,
321             ISO_8859_7,
322             ISO_8859_8,
323             ISO_8859_9,
324             SHIFT_JIS,
325             EUC_JP,
326             EUC_KR,
327             ISO_2022_JP,
328             ISO_2022_JP_2,
329             UTF_8,
330             GBK,
331             GB18030,
332             GB2312,
333             BIG5,
334             UCS2,
335             UTF_16,
336             HZ_GB_2312,
337     };
338 
339     /**
340      * The Well-known-charset Mime name.
341      */
342     public static final String MIMENAME_ANY_CHARSET = "*";
343     public static final String MIMENAME_US_ASCII    = "us-ascii";
344     public static final String MIMENAME_ISO_8859_1  = "iso-8859-1";
345     public static final String MIMENAME_ISO_8859_2  = "iso-8859-2";
346     public static final String MIMENAME_ISO_8859_3  = "iso-8859-3";
347     public static final String MIMENAME_ISO_8859_4  = "iso-8859-4";
348     public static final String MIMENAME_ISO_8859_5  = "iso-8859-5";
349     public static final String MIMENAME_ISO_8859_6  = "iso-8859-6";
350     public static final String MIMENAME_ISO_8859_7  = "iso-8859-7";
351     public static final String MIMENAME_ISO_8859_8  = "iso-8859-8";
352     public static final String MIMENAME_ISO_8859_9  = "iso-8859-9";
353     public static final String MIMENAME_SHIFT_JIS   = "shift_JIS";
354     public static final String MIMENAME_EUC_JP      = "euc-jp";
355     public static final String MIMENAME_EUC_KR      = "euc-kr";
356     public static final String MIMENAME_ISO_2022_JP = "iso-2022-jp";
357     public static final String MIMENAME_ISO_2022_JP_2 = "iso-2022-jp-2";
358     public static final String MIMENAME_UTF_8       = "utf-8";
359     public static final String MIMENAME_GBK         = "gbk";
360     public static final String MIMENAME_GB18030     = "gb18030";
361     public static final String MIMENAME_GB2312      = "gb2312";
362     public static final String MIMENAME_BIG5        = "big5";
363     public static final String MIMENAME_UCS2        = "iso-10646-ucs-2";
364     public static final String MIMENAME_UTF_16      = "utf-16";
365     public static final String MIMENAME_HZ_GB_2312  = "hz-gb-2312";
366 
367     public static final String DEFAULT_CHARSET_NAME = MIMENAME_UTF_8;
368 
369     /**
370      * Array of the names of character sets.
371      */
372     private static final String[] MIME_NAMES = {
373             MIMENAME_ANY_CHARSET,
374             MIMENAME_US_ASCII,
375             MIMENAME_ISO_8859_1,
376             MIMENAME_ISO_8859_2,
377             MIMENAME_ISO_8859_3,
378             MIMENAME_ISO_8859_4,
379             MIMENAME_ISO_8859_5,
380             MIMENAME_ISO_8859_6,
381             MIMENAME_ISO_8859_7,
382             MIMENAME_ISO_8859_8,
383             MIMENAME_ISO_8859_9,
384             MIMENAME_SHIFT_JIS,
385             MIMENAME_EUC_JP,
386             MIMENAME_EUC_KR,
387             MIMENAME_ISO_2022_JP,
388             MIMENAME_ISO_2022_JP_2,
389             MIMENAME_UTF_8,
390             MIMENAME_GBK,
391             MIMENAME_GB18030,
392             MIMENAME_GB2312,
393             MIMENAME_BIG5,
394             MIMENAME_UCS2,
395             MIMENAME_UTF_16,
396             MIMENAME_HZ_GB_2312,
397     };
398 
399     private static final SparseArray<String> MIBENUM_TO_NAME_MAP;
400 
401     private static final SimpleArrayMap<String, Integer> NAME_TO_MIBENUM_MAP;
402 
403     static {
404         // Create the HashMaps.
405         MIBENUM_TO_NAME_MAP = new SparseArray<String>();
406         NAME_TO_MIBENUM_MAP = new SimpleArrayMap<String, Integer>();
assert(MIBENUM_NUMBERS.length == MIME_NAMES.length)407         assert (MIBENUM_NUMBERS.length == MIME_NAMES.length);
408         final int count = MIBENUM_NUMBERS.length - 1;
409         for (int i = 0; i <= count; i++) {
MIBENUM_TO_NAME_MAP.put(MIBENUM_NUMBERS[i], MIME_NAMES[i])410             MIBENUM_TO_NAME_MAP.put(MIBENUM_NUMBERS[i], MIME_NAMES[i]);
NAME_TO_MIBENUM_MAP.put(MIME_NAMES[i], MIBENUM_NUMBERS[i])411             NAME_TO_MIBENUM_MAP.put(MIME_NAMES[i], MIBENUM_NUMBERS[i]);
412         }
413     }
414 
CharacterSets()415     private CharacterSets() {
416     } // Non-instantiatable
417 
418     /**
419      * Map an MIBEnum number to the name of the charset which this number
420      * is assigned to by IANA.
421      *
422      * @param mibEnumValue An IANA assigned MIBEnum number.
423      * @return The name string of the charset.
424      */
getMimeName(final int mibEnumValue)425     public static String getMimeName(final int mibEnumValue)
426             throws UnsupportedEncodingException {
427         final String name = MIBENUM_TO_NAME_MAP.get(mibEnumValue);
428         if (name == null) {
429             throw new UnsupportedEncodingException();
430         }
431         return name;
432     }
433 
434     /**
435      * Map a well-known charset name to its assigned MIBEnum number.
436      *
437      * @param mimeName The charset name.
438      * @return The MIBEnum number assigned by IANA for this charset.
439      */
getMibEnumValue(final String mimeName)440     public static int getMibEnumValue(final String mimeName)
441             throws UnsupportedEncodingException {
442         if (null == mimeName) {
443             return -1;
444         }
445 
446         final Integer mibEnumValue = NAME_TO_MIBENUM_MAP.get(mimeName);
447         if (mibEnumValue == null) {
448             throw new UnsupportedEncodingException();
449         }
450         return mibEnumValue;
451     }
452 }
453