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Diffstat (limited to 'libcharsetdetect/mozilla/extensions/universalchardet/src/base/nsMBCSSM.cpp')
-rw-r--r--libcharsetdetect/mozilla/extensions/universalchardet/src/base/nsMBCSSM.cpp626
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diff --git a/libcharsetdetect/mozilla/extensions/universalchardet/src/base/nsMBCSSM.cpp b/libcharsetdetect/mozilla/extensions/universalchardet/src/base/nsMBCSSM.cpp
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index 0000000..357ad99
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+++ b/libcharsetdetect/mozilla/extensions/universalchardet/src/base/nsMBCSSM.cpp
@@ -0,0 +1,626 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is mozilla.org code.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1998
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+#include "nsCodingStateMachine.h"
+
+/*
+Modification from frank tang's original work:
+. 0x00 is allowed as a legal character. Since some web pages contains this char in
+ text stream.
+*/
+
+// BIG5
+
+static PRUint32 BIG5_cls [ 256 / 8 ] = {
+//PCK4BITS(0,1,1,1,1,1,1,1), // 00 - 07
+PCK4BITS(1,1,1,1,1,1,1,1), // 00 - 07 //allow 0x00 as legal value
+PCK4BITS(1,1,1,1,1,1,0,0), // 08 - 0f
+PCK4BITS(1,1,1,1,1,1,1,1), // 10 - 17
+PCK4BITS(1,1,1,0,1,1,1,1), // 18 - 1f
+PCK4BITS(1,1,1,1,1,1,1,1), // 20 - 27
+PCK4BITS(1,1,1,1,1,1,1,1), // 28 - 2f
+PCK4BITS(1,1,1,1,1,1,1,1), // 30 - 37
+PCK4BITS(1,1,1,1,1,1,1,1), // 38 - 3f
+PCK4BITS(2,2,2,2,2,2,2,2), // 40 - 47
+PCK4BITS(2,2,2,2,2,2,2,2), // 48 - 4f
+PCK4BITS(2,2,2,2,2,2,2,2), // 50 - 57
+PCK4BITS(2,2,2,2,2,2,2,2), // 58 - 5f
+PCK4BITS(2,2,2,2,2,2,2,2), // 60 - 67
+PCK4BITS(2,2,2,2,2,2,2,2), // 68 - 6f
+PCK4BITS(2,2,2,2,2,2,2,2), // 70 - 77
+PCK4BITS(2,2,2,2,2,2,2,1), // 78 - 7f
+PCK4BITS(4,4,4,4,4,4,4,4), // 80 - 87
+PCK4BITS(4,4,4,4,4,4,4,4), // 88 - 8f
+PCK4BITS(4,4,4,4,4,4,4,4), // 90 - 97
+PCK4BITS(4,4,4,4,4,4,4,4), // 98 - 9f
+PCK4BITS(4,3,3,3,3,3,3,3), // a0 - a7
+PCK4BITS(3,3,3,3,3,3,3,3), // a8 - af
+PCK4BITS(3,3,3,3,3,3,3,3), // b0 - b7
+PCK4BITS(3,3,3,3,3,3,3,3), // b8 - bf
+PCK4BITS(3,3,3,3,3,3,3,3), // c0 - c7
+PCK4BITS(3,3,3,3,3,3,3,3), // c8 - cf
+PCK4BITS(3,3,3,3,3,3,3,3), // d0 - d7
+PCK4BITS(3,3,3,3,3,3,3,3), // d8 - df
+PCK4BITS(3,3,3,3,3,3,3,3), // e0 - e7
+PCK4BITS(3,3,3,3,3,3,3,3), // e8 - ef
+PCK4BITS(3,3,3,3,3,3,3,3), // f0 - f7
+PCK4BITS(3,3,3,3,3,3,3,0) // f8 - ff
+};
+
+
+static PRUint32 BIG5_st [ 3] = {
+PCK4BITS(eError,eStart,eStart, 3,eError,eError,eError,eError),//00-07
+PCK4BITS(eError,eError,eItsMe,eItsMe,eItsMe,eItsMe,eItsMe,eError),//08-0f
+PCK4BITS(eError,eStart,eStart,eStart,eStart,eStart,eStart,eStart) //10-17
+};
+
+static const PRUint32 Big5CharLenTable[] = {0, 1, 1, 2, 0};
+
+SMModel Big5SMModel = {
+ {eIdxSft4bits, eSftMsk4bits, eBitSft4bits, eUnitMsk4bits, BIG5_cls },
+ 5,
+ {eIdxSft4bits, eSftMsk4bits, eBitSft4bits, eUnitMsk4bits, BIG5_st },
+ Big5CharLenTable,
+ "Big5",
+};
+
+static PRUint32 EUCJP_cls [ 256 / 8 ] = {
+//PCK4BITS(5,4,4,4,4,4,4,4), // 00 - 07
+PCK4BITS(4,4,4,4,4,4,4,4), // 00 - 07
+PCK4BITS(4,4,4,4,4,4,5,5), // 08 - 0f
+PCK4BITS(4,4,4,4,4,4,4,4), // 10 - 17
+PCK4BITS(4,4,4,5,4,4,4,4), // 18 - 1f
+PCK4BITS(4,4,4,4,4,4,4,4), // 20 - 27
+PCK4BITS(4,4,4,4,4,4,4,4), // 28 - 2f
+PCK4BITS(4,4,4,4,4,4,4,4), // 30 - 37
+PCK4BITS(4,4,4,4,4,4,4,4), // 38 - 3f
+PCK4BITS(4,4,4,4,4,4,4,4), // 40 - 47
+PCK4BITS(4,4,4,4,4,4,4,4), // 48 - 4f
+PCK4BITS(4,4,4,4,4,4,4,4), // 50 - 57
+PCK4BITS(4,4,4,4,4,4,4,4), // 58 - 5f
+PCK4BITS(4,4,4,4,4,4,4,4), // 60 - 67
+PCK4BITS(4,4,4,4,4,4,4,4), // 68 - 6f
+PCK4BITS(4,4,4,4,4,4,4,4), // 70 - 77
+PCK4BITS(4,4,4,4,4,4,4,4), // 78 - 7f
+PCK4BITS(5,5,5,5,5,5,5,5), // 80 - 87
+PCK4BITS(5,5,5,5,5,5,1,3), // 88 - 8f
+PCK4BITS(5,5,5,5,5,5,5,5), // 90 - 97
+PCK4BITS(5,5,5,5,5,5,5,5), // 98 - 9f
+PCK4BITS(5,2,2,2,2,2,2,2), // a0 - a7
+PCK4BITS(2,2,2,2,2,2,2,2), // a8 - af
+PCK4BITS(2,2,2,2,2,2,2,2), // b0 - b7
+PCK4BITS(2,2,2,2,2,2,2,2), // b8 - bf
+PCK4BITS(2,2,2,2,2,2,2,2), // c0 - c7
+PCK4BITS(2,2,2,2,2,2,2,2), // c8 - cf
+PCK4BITS(2,2,2,2,2,2,2,2), // d0 - d7
+PCK4BITS(2,2,2,2,2,2,2,2), // d8 - df
+PCK4BITS(0,0,0,0,0,0,0,0), // e0 - e7
+PCK4BITS(0,0,0,0,0,0,0,0), // e8 - ef
+PCK4BITS(0,0,0,0,0,0,0,0), // f0 - f7
+PCK4BITS(0,0,0,0,0,0,0,5) // f8 - ff
+};
+
+
+static PRUint32 EUCJP_st [ 5] = {
+PCK4BITS( 3, 4, 3, 5,eStart,eError,eError,eError),//00-07
+PCK4BITS(eError,eError,eError,eError,eItsMe,eItsMe,eItsMe,eItsMe),//08-0f
+PCK4BITS(eItsMe,eItsMe,eStart,eError,eStart,eError,eError,eError),//10-17
+PCK4BITS(eError,eError,eStart,eError,eError,eError, 3,eError),//18-1f
+PCK4BITS( 3,eError,eError,eError,eStart,eStart,eStart,eStart) //20-27
+};
+
+static const PRUint32 EUCJPCharLenTable[] = {2, 2, 2, 3, 1, 0};
+
+SMModel EUCJPSMModel = {
+ {eIdxSft4bits, eSftMsk4bits, eBitSft4bits, eUnitMsk4bits, EUCJP_cls },
+ 6,
+ {eIdxSft4bits, eSftMsk4bits, eBitSft4bits, eUnitMsk4bits, EUCJP_st },
+ EUCJPCharLenTable,
+ "EUC-JP",
+};
+
+static PRUint32 EUCKR_cls [ 256 / 8 ] = {
+//PCK4BITS(0,1,1,1,1,1,1,1), // 00 - 07
+PCK4BITS(1,1,1,1,1,1,1,1), // 00 - 07
+PCK4BITS(1,1,1,1,1,1,0,0), // 08 - 0f
+PCK4BITS(1,1,1,1,1,1,1,1), // 10 - 17
+PCK4BITS(1,1,1,0,1,1,1,1), // 18 - 1f
+PCK4BITS(1,1,1,1,1,1,1,1), // 20 - 27
+PCK4BITS(1,1,1,1,1,1,1,1), // 28 - 2f
+PCK4BITS(1,1,1,1,1,1,1,1), // 30 - 37
+PCK4BITS(1,1,1,1,1,1,1,1), // 38 - 3f
+PCK4BITS(1,1,1,1,1,1,1,1), // 40 - 47
+PCK4BITS(1,1,1,1,1,1,1,1), // 48 - 4f
+PCK4BITS(1,1,1,1,1,1,1,1), // 50 - 57
+PCK4BITS(1,1,1,1,1,1,1,1), // 58 - 5f
+PCK4BITS(1,1,1,1,1,1,1,1), // 60 - 67
+PCK4BITS(1,1,1,1,1,1,1,1), // 68 - 6f
+PCK4BITS(1,1,1,1,1,1,1,1), // 70 - 77
+PCK4BITS(1,1,1,1,1,1,1,1), // 78 - 7f
+PCK4BITS(0,0,0,0,0,0,0,0), // 80 - 87
+PCK4BITS(0,0,0,0,0,0,0,0), // 88 - 8f
+PCK4BITS(0,0,0,0,0,0,0,0), // 90 - 97
+PCK4BITS(0,0,0,0,0,0,0,0), // 98 - 9f
+PCK4BITS(0,2,2,2,2,2,2,2), // a0 - a7
+PCK4BITS(2,2,2,2,2,3,3,3), // a8 - af
+PCK4BITS(2,2,2,2,2,2,2,2), // b0 - b7
+PCK4BITS(2,2,2,2,2,2,2,2), // b8 - bf
+PCK4BITS(2,2,2,2,2,2,2,2), // c0 - c7
+PCK4BITS(2,3,2,2,2,2,2,2), // c8 - cf
+PCK4BITS(2,2,2,2,2,2,2,2), // d0 - d7
+PCK4BITS(2,2,2,2,2,2,2,2), // d8 - df
+PCK4BITS(2,2,2,2,2,2,2,2), // e0 - e7
+PCK4BITS(2,2,2,2,2,2,2,2), // e8 - ef
+PCK4BITS(2,2,2,2,2,2,2,2), // f0 - f7
+PCK4BITS(2,2,2,2,2,2,2,0) // f8 - ff
+};
+
+
+static PRUint32 EUCKR_st [ 2] = {
+PCK4BITS(eError,eStart, 3,eError,eError,eError,eError,eError),//00-07
+PCK4BITS(eItsMe,eItsMe,eItsMe,eItsMe,eError,eError,eStart,eStart) //08-0f
+};
+
+static const PRUint32 EUCKRCharLenTable[] = {0, 1, 2, 0};
+
+SMModel EUCKRSMModel = {
+ {eIdxSft4bits, eSftMsk4bits, eBitSft4bits, eUnitMsk4bits, EUCKR_cls },
+ 4,
+ {eIdxSft4bits, eSftMsk4bits, eBitSft4bits, eUnitMsk4bits, EUCKR_st },
+ EUCKRCharLenTable,
+ "EUC-KR",
+};
+
+static PRUint32 EUCTW_cls [ 256 / 8 ] = {
+//PCK4BITS(0,2,2,2,2,2,2,2), // 00 - 07
+PCK4BITS(2,2,2,2,2,2,2,2), // 00 - 07
+PCK4BITS(2,2,2,2,2,2,0,0), // 08 - 0f
+PCK4BITS(2,2,2,2,2,2,2,2), // 10 - 17
+PCK4BITS(2,2,2,0,2,2,2,2), // 18 - 1f
+PCK4BITS(2,2,2,2,2,2,2,2), // 20 - 27
+PCK4BITS(2,2,2,2,2,2,2,2), // 28 - 2f
+PCK4BITS(2,2,2,2,2,2,2,2), // 30 - 37
+PCK4BITS(2,2,2,2,2,2,2,2), // 38 - 3f
+PCK4BITS(2,2,2,2,2,2,2,2), // 40 - 47
+PCK4BITS(2,2,2,2,2,2,2,2), // 48 - 4f
+PCK4BITS(2,2,2,2,2,2,2,2), // 50 - 57
+PCK4BITS(2,2,2,2,2,2,2,2), // 58 - 5f
+PCK4BITS(2,2,2,2,2,2,2,2), // 60 - 67
+PCK4BITS(2,2,2,2,2,2,2,2), // 68 - 6f
+PCK4BITS(2,2,2,2,2,2,2,2), // 70 - 77
+PCK4BITS(2,2,2,2,2,2,2,2), // 78 - 7f
+PCK4BITS(0,0,0,0,0,0,0,0), // 80 - 87
+PCK4BITS(0,0,0,0,0,0,6,0), // 88 - 8f
+PCK4BITS(0,0,0,0,0,0,0,0), // 90 - 97
+PCK4BITS(0,0,0,0,0,0,0,0), // 98 - 9f
+PCK4BITS(0,3,4,4,4,4,4,4), // a0 - a7
+PCK4BITS(5,5,1,1,1,1,1,1), // a8 - af
+PCK4BITS(1,1,1,1,1,1,1,1), // b0 - b7
+PCK4BITS(1,1,1,1,1,1,1,1), // b8 - bf
+PCK4BITS(1,1,3,1,3,3,3,3), // c0 - c7
+PCK4BITS(3,3,3,3,3,3,3,3), // c8 - cf
+PCK4BITS(3,3,3,3,3,3,3,3), // d0 - d7
+PCK4BITS(3,3,3,3,3,3,3,3), // d8 - df
+PCK4BITS(3,3,3,3,3,3,3,3), // e0 - e7
+PCK4BITS(3,3,3,3,3,3,3,3), // e8 - ef
+PCK4BITS(3,3,3,3,3,3,3,3), // f0 - f7
+PCK4BITS(3,3,3,3,3,3,3,0) // f8 - ff
+};
+
+
+static PRUint32 EUCTW_st [ 6] = {
+PCK4BITS(eError,eError,eStart, 3, 3, 3, 4,eError),//00-07
+PCK4BITS(eError,eError,eError,eError,eError,eError,eItsMe,eItsMe),//08-0f
+PCK4BITS(eItsMe,eItsMe,eItsMe,eItsMe,eItsMe,eError,eStart,eError),//10-17
+PCK4BITS(eStart,eStart,eStart,eError,eError,eError,eError,eError),//18-1f
+PCK4BITS( 5,eError,eError,eError,eStart,eError,eStart,eStart),//20-27
+PCK4BITS(eStart,eError,eStart,eStart,eStart,eStart,eStart,eStart) //28-2f
+};
+
+static const PRUint32 EUCTWCharLenTable[] = {0, 0, 1, 2, 2, 2, 3};
+
+SMModel EUCTWSMModel = {
+ {eIdxSft4bits, eSftMsk4bits, eBitSft4bits, eUnitMsk4bits, EUCTW_cls },
+ 7,
+ {eIdxSft4bits, eSftMsk4bits, eBitSft4bits, eUnitMsk4bits, EUCTW_st },
+ EUCTWCharLenTable,
+ "x-euc-tw",
+};
+
+/* obsolete GB2312 by gb18030
+static PRUint32 GB2312_cls [ 256 / 8 ] = {
+//PCK4BITS(0,1,1,1,1,1,1,1), // 00 - 07
+PCK4BITS(1,1,1,1,1,1,1,1), // 00 - 07
+PCK4BITS(1,1,1,1,1,1,0,0), // 08 - 0f
+PCK4BITS(1,1,1,1,1,1,1,1), // 10 - 17
+PCK4BITS(1,1,1,0,1,1,1,1), // 18 - 1f
+PCK4BITS(1,1,1,1,1,1,1,1), // 20 - 27
+PCK4BITS(1,1,1,1,1,1,1,1), // 28 - 2f
+PCK4BITS(1,1,1,1,1,1,1,1), // 30 - 37
+PCK4BITS(1,1,1,1,1,1,1,1), // 38 - 3f
+PCK4BITS(1,1,1,1,1,1,1,1), // 40 - 47
+PCK4BITS(1,1,1,1,1,1,1,1), // 48 - 4f
+PCK4BITS(1,1,1,1,1,1,1,1), // 50 - 57
+PCK4BITS(1,1,1,1,1,1,1,1), // 58 - 5f
+PCK4BITS(1,1,1,1,1,1,1,1), // 60 - 67
+PCK4BITS(1,1,1,1,1,1,1,1), // 68 - 6f
+PCK4BITS(1,1,1,1,1,1,1,1), // 70 - 77
+PCK4BITS(1,1,1,1,1,1,1,1), // 78 - 7f
+PCK4BITS(1,0,0,0,0,0,0,0), // 80 - 87
+PCK4BITS(0,0,0,0,0,0,0,0), // 88 - 8f
+PCK4BITS(0,0,0,0,0,0,0,0), // 90 - 97
+PCK4BITS(0,0,0,0,0,0,0,0), // 98 - 9f
+PCK4BITS(0,2,2,2,2,2,2,2), // a0 - a7
+PCK4BITS(2,2,3,3,3,3,3,3), // a8 - af
+PCK4BITS(2,2,2,2,2,2,2,2), // b0 - b7
+PCK4BITS(2,2,2,2,2,2,2,2), // b8 - bf
+PCK4BITS(2,2,2,2,2,2,2,2), // c0 - c7
+PCK4BITS(2,2,2,2,2,2,2,2), // c8 - cf
+PCK4BITS(2,2,2,2,2,2,2,2), // d0 - d7
+PCK4BITS(2,2,2,2,2,2,2,2), // d8 - df
+PCK4BITS(2,2,2,2,2,2,2,2), // e0 - e7
+PCK4BITS(2,2,2,2,2,2,2,2), // e8 - ef
+PCK4BITS(2,2,2,2,2,2,2,2), // f0 - f7
+PCK4BITS(2,2,2,2,2,2,2,0) // f8 - ff
+};
+
+
+static PRUint32 GB2312_st [ 2] = {
+PCK4BITS(eError,eStart, 3,eError,eError,eError,eError,eError),//00-07
+PCK4BITS(eItsMe,eItsMe,eItsMe,eItsMe,eError,eError,eStart,eStart) //08-0f
+};
+
+static const PRUint32 GB2312CharLenTable[] = {0, 1, 2, 0};
+
+SMModel GB2312SMModel = {
+ {eIdxSft4bits, eSftMsk4bits, eBitSft4bits, eUnitMsk4bits, GB2312_cls },
+ 4,
+ {eIdxSft4bits, eSftMsk4bits, eBitSft4bits, eUnitMsk4bits, GB2312_st },
+ GB2312CharLenTable,
+ "GB2312",
+};
+*/
+
+// the following state machine data was created by perl script in
+// intl/chardet/tools. It should be the same as in PSM detector.
+static PRUint32 GB18030_cls [ 256 / 8 ] = {
+PCK4BITS(1,1,1,1,1,1,1,1), // 00 - 07
+PCK4BITS(1,1,1,1,1,1,0,0), // 08 - 0f
+PCK4BITS(1,1,1,1,1,1,1,1), // 10 - 17
+PCK4BITS(1,1,1,0,1,1,1,1), // 18 - 1f
+PCK4BITS(1,1,1,1,1,1,1,1), // 20 - 27
+PCK4BITS(1,1,1,1,1,1,1,1), // 28 - 2f
+PCK4BITS(3,3,3,3,3,3,3,3), // 30 - 37
+PCK4BITS(3,3,1,1,1,1,1,1), // 38 - 3f
+PCK4BITS(2,2,2,2,2,2,2,2), // 40 - 47
+PCK4BITS(2,2,2,2,2,2,2,2), // 48 - 4f
+PCK4BITS(2,2,2,2,2,2,2,2), // 50 - 57
+PCK4BITS(2,2,2,2,2,2,2,2), // 58 - 5f
+PCK4BITS(2,2,2,2,2,2,2,2), // 60 - 67
+PCK4BITS(2,2,2,2,2,2,2,2), // 68 - 6f
+PCK4BITS(2,2,2,2,2,2,2,2), // 70 - 77
+PCK4BITS(2,2,2,2,2,2,2,4), // 78 - 7f
+PCK4BITS(5,6,6,6,6,6,6,6), // 80 - 87
+PCK4BITS(6,6,6,6,6,6,6,6), // 88 - 8f
+PCK4BITS(6,6,6,6,6,6,6,6), // 90 - 97
+PCK4BITS(6,6,6,6,6,6,6,6), // 98 - 9f
+PCK4BITS(6,6,6,6,6,6,6,6), // a0 - a7
+PCK4BITS(6,6,6,6,6,6,6,6), // a8 - af
+PCK4BITS(6,6,6,6,6,6,6,6), // b0 - b7
+PCK4BITS(6,6,6,6,6,6,6,6), // b8 - bf
+PCK4BITS(6,6,6,6,6,6,6,6), // c0 - c7
+PCK4BITS(6,6,6,6,6,6,6,6), // c8 - cf
+PCK4BITS(6,6,6,6,6,6,6,6), // d0 - d7
+PCK4BITS(6,6,6,6,6,6,6,6), // d8 - df
+PCK4BITS(6,6,6,6,6,6,6,6), // e0 - e7
+PCK4BITS(6,6,6,6,6,6,6,6), // e8 - ef
+PCK4BITS(6,6,6,6,6,6,6,6), // f0 - f7
+PCK4BITS(6,6,6,6,6,6,6,0) // f8 - ff
+};
+
+
+static PRUint32 GB18030_st [ 6] = {
+PCK4BITS(eError,eStart,eStart,eStart,eStart,eStart, 3,eError),//00-07
+PCK4BITS(eError,eError,eError,eError,eError,eError,eItsMe,eItsMe),//08-0f
+PCK4BITS(eItsMe,eItsMe,eItsMe,eItsMe,eItsMe,eError,eError,eStart),//10-17
+PCK4BITS( 4,eError,eStart,eStart,eError,eError,eError,eError),//18-1f
+PCK4BITS(eError,eError, 5,eError,eError,eError,eItsMe,eError),//20-27
+PCK4BITS(eError,eError,eStart,eStart,eStart,eStart,eStart,eStart) //28-2f
+};
+
+// To be accurate, the length of class 6 can be either 2 or 4.
+// But it is not necessary to discriminate between the two since
+// it is used for frequency analysis only, and we are validing
+// each code range there as well. So it is safe to set it to be
+// 2 here.
+static const PRUint32 GB18030CharLenTable[] = {0, 1, 1, 1, 1, 1, 2};
+
+SMModel GB18030SMModel = {
+ {eIdxSft4bits, eSftMsk4bits, eBitSft4bits, eUnitMsk4bits, GB18030_cls },
+ 7,
+ {eIdxSft4bits, eSftMsk4bits, eBitSft4bits, eUnitMsk4bits, GB18030_st },
+ GB18030CharLenTable,
+ "GB18030",
+};
+
+// sjis
+
+static PRUint32 SJIS_cls [ 256 / 8 ] = {
+//PCK4BITS(0,1,1,1,1,1,1,1), // 00 - 07
+PCK4BITS(1,1,1,1,1,1,1,1), // 00 - 07
+PCK4BITS(1,1,1,1,1,1,0,0), // 08 - 0f
+PCK4BITS(1,1,1,1,1,1,1,1), // 10 - 17
+PCK4BITS(1,1,1,0,1,1,1,1), // 18 - 1f
+PCK4BITS(1,1,1,1,1,1,1,1), // 20 - 27
+PCK4BITS(1,1,1,1,1,1,1,1), // 28 - 2f
+PCK4BITS(1,1,1,1,1,1,1,1), // 30 - 37
+PCK4BITS(1,1,1,1,1,1,1,1), // 38 - 3f
+PCK4BITS(2,2,2,2,2,2,2,2), // 40 - 47
+PCK4BITS(2,2,2,2,2,2,2,2), // 48 - 4f
+PCK4BITS(2,2,2,2,2,2,2,2), // 50 - 57
+PCK4BITS(2,2,2,2,2,2,2,2), // 58 - 5f
+PCK4BITS(2,2,2,2,2,2,2,2), // 60 - 67
+PCK4BITS(2,2,2,2,2,2,2,2), // 68 - 6f
+PCK4BITS(2,2,2,2,2,2,2,2), // 70 - 77
+PCK4BITS(2,2,2,2,2,2,2,1), // 78 - 7f
+PCK4BITS(3,3,3,3,3,3,3,3), // 80 - 87
+PCK4BITS(3,3,3,3,3,3,3,3), // 88 - 8f
+PCK4BITS(3,3,3,3,3,3,3,3), // 90 - 97
+PCK4BITS(3,3,3,3,3,3,3,3), // 98 - 9f
+//0xa0 is illegal in sjis encoding, but some pages does
+//contain such byte. We need to be more error forgiven.
+PCK4BITS(2,2,2,2,2,2,2,2), // a0 - a7
+PCK4BITS(2,2,2,2,2,2,2,2), // a8 - af
+PCK4BITS(2,2,2,2,2,2,2,2), // b0 - b7
+PCK4BITS(2,2,2,2,2,2,2,2), // b8 - bf
+PCK4BITS(2,2,2,2,2,2,2,2), // c0 - c7
+PCK4BITS(2,2,2,2,2,2,2,2), // c8 - cf
+PCK4BITS(2,2,2,2,2,2,2,2), // d0 - d7
+PCK4BITS(2,2,2,2,2,2,2,2), // d8 - df
+PCK4BITS(3,3,3,3,3,3,3,3), // e0 - e7
+PCK4BITS(3,3,3,3,3,4,4,4), // e8 - ef
+PCK4BITS(4,4,4,4,4,4,4,4), // f0 - f7
+PCK4BITS(4,4,4,4,4,0,0,0) // f8 - ff
+};
+
+
+static PRUint32 SJIS_st [ 3] = {
+PCK4BITS(eError,eStart,eStart, 3,eError,eError,eError,eError),//00-07
+PCK4BITS(eError,eError,eError,eError,eItsMe,eItsMe,eItsMe,eItsMe),//08-0f
+PCK4BITS(eItsMe,eItsMe,eError,eError,eStart,eStart,eStart,eStart) //10-17
+};
+
+static const PRUint32 SJISCharLenTable[] = {0, 1, 1, 2, 0, 0};
+
+SMModel SJISSMModel = {
+ {eIdxSft4bits, eSftMsk4bits, eBitSft4bits, eUnitMsk4bits, SJIS_cls },
+ 6,
+ {eIdxSft4bits, eSftMsk4bits, eBitSft4bits, eUnitMsk4bits, SJIS_st },
+ SJISCharLenTable,
+ "Shift_JIS",
+};
+
+
+static PRUint32 UCS2BE_cls [ 256 / 8 ] = {
+PCK4BITS(0,0,0,0,0,0,0,0), // 00 - 07
+PCK4BITS(0,0,1,0,0,2,0,0), // 08 - 0f
+PCK4BITS(0,0,0,0,0,0,0,0), // 10 - 17
+PCK4BITS(0,0,0,3,0,0,0,0), // 18 - 1f
+PCK4BITS(0,0,0,0,0,0,0,0), // 20 - 27
+PCK4BITS(0,3,3,3,3,3,0,0), // 28 - 2f
+PCK4BITS(0,0,0,0,0,0,0,0), // 30 - 37
+PCK4BITS(0,0,0,0,0,0,0,0), // 38 - 3f
+PCK4BITS(0,0,0,0,0,0,0,0), // 40 - 47
+PCK4BITS(0,0,0,0,0,0,0,0), // 48 - 4f
+PCK4BITS(0,0,0,0,0,0,0,0), // 50 - 57
+PCK4BITS(0,0,0,0,0,0,0,0), // 58 - 5f
+PCK4BITS(0,0,0,0,0,0,0,0), // 60 - 67
+PCK4BITS(0,0,0,0,0,0,0,0), // 68 - 6f
+PCK4BITS(0,0,0,0,0,0,0,0), // 70 - 77
+PCK4BITS(0,0,0,0,0,0,0,0), // 78 - 7f
+PCK4BITS(0,0,0,0,0,0,0,0), // 80 - 87
+PCK4BITS(0,0,0,0,0,0,0,0), // 88 - 8f
+PCK4BITS(0,0,0,0,0,0,0,0), // 90 - 97
+PCK4BITS(0,0,0,0,0,0,0,0), // 98 - 9f
+PCK4BITS(0,0,0,0,0,0,0,0), // a0 - a7
+PCK4BITS(0,0,0,0,0,0,0,0), // a8 - af
+PCK4BITS(0,0,0,0,0,0,0,0), // b0 - b7
+PCK4BITS(0,0,0,0,0,0,0,0), // b8 - bf
+PCK4BITS(0,0,0,0,0,0,0,0), // c0 - c7
+PCK4BITS(0,0,0,0,0,0,0,0), // c8 - cf
+PCK4BITS(0,0,0,0,0,0,0,0), // d0 - d7
+PCK4BITS(0,0,0,0,0,0,0,0), // d8 - df
+PCK4BITS(0,0,0,0,0,0,0,0), // e0 - e7
+PCK4BITS(0,0,0,0,0,0,0,0), // e8 - ef
+PCK4BITS(0,0,0,0,0,0,0,0), // f0 - f7
+PCK4BITS(0,0,0,0,0,0,4,5) // f8 - ff
+};
+
+
+static PRUint32 UCS2BE_st [ 7] = {
+PCK4BITS( 5, 7, 7,eError, 4, 3,eError,eError),//00-07
+PCK4BITS(eError,eError,eError,eError,eItsMe,eItsMe,eItsMe,eItsMe),//08-0f
+PCK4BITS(eItsMe,eItsMe, 6, 6, 6, 6,eError,eError),//10-17
+PCK4BITS( 6, 6, 6, 6, 6,eItsMe, 6, 6),//18-1f
+PCK4BITS( 6, 6, 6, 6, 5, 7, 7,eError),//20-27
+PCK4BITS( 5, 8, 6, 6,eError, 6, 6, 6),//28-2f
+PCK4BITS( 6, 6, 6, 6,eError,eError,eStart,eStart) //30-37
+};
+
+static const PRUint32 UCS2BECharLenTable[] = {2, 2, 2, 0, 2, 2};
+
+SMModel UCS2BESMModel = {
+ {eIdxSft4bits, eSftMsk4bits, eBitSft4bits, eUnitMsk4bits, UCS2BE_cls },
+ 6,
+ {eIdxSft4bits, eSftMsk4bits, eBitSft4bits, eUnitMsk4bits, UCS2BE_st },
+ UCS2BECharLenTable,
+ "UTF-16BE",
+};
+
+static PRUint32 UCS2LE_cls [ 256 / 8 ] = {
+PCK4BITS(0,0,0,0,0,0,0,0), // 00 - 07
+PCK4BITS(0,0,1,0,0,2,0,0), // 08 - 0f
+PCK4BITS(0,0,0,0,0,0,0,0), // 10 - 17
+PCK4BITS(0,0,0,3,0,0,0,0), // 18 - 1f
+PCK4BITS(0,0,0,0,0,0,0,0), // 20 - 27
+PCK4BITS(0,3,3,3,3,3,0,0), // 28 - 2f
+PCK4BITS(0,0,0,0,0,0,0,0), // 30 - 37
+PCK4BITS(0,0,0,0,0,0,0,0), // 38 - 3f
+PCK4BITS(0,0,0,0,0,0,0,0), // 40 - 47
+PCK4BITS(0,0,0,0,0,0,0,0), // 48 - 4f
+PCK4BITS(0,0,0,0,0,0,0,0), // 50 - 57
+PCK4BITS(0,0,0,0,0,0,0,0), // 58 - 5f
+PCK4BITS(0,0,0,0,0,0,0,0), // 60 - 67
+PCK4BITS(0,0,0,0,0,0,0,0), // 68 - 6f
+PCK4BITS(0,0,0,0,0,0,0,0), // 70 - 77
+PCK4BITS(0,0,0,0,0,0,0,0), // 78 - 7f
+PCK4BITS(0,0,0,0,0,0,0,0), // 80 - 87
+PCK4BITS(0,0,0,0,0,0,0,0), // 88 - 8f
+PCK4BITS(0,0,0,0,0,0,0,0), // 90 - 97
+PCK4BITS(0,0,0,0,0,0,0,0), // 98 - 9f
+PCK4BITS(0,0,0,0,0,0,0,0), // a0 - a7
+PCK4BITS(0,0,0,0,0,0,0,0), // a8 - af
+PCK4BITS(0,0,0,0,0,0,0,0), // b0 - b7
+PCK4BITS(0,0,0,0,0,0,0,0), // b8 - bf
+PCK4BITS(0,0,0,0,0,0,0,0), // c0 - c7
+PCK4BITS(0,0,0,0,0,0,0,0), // c8 - cf
+PCK4BITS(0,0,0,0,0,0,0,0), // d0 - d7
+PCK4BITS(0,0,0,0,0,0,0,0), // d8 - df
+PCK4BITS(0,0,0,0,0,0,0,0), // e0 - e7
+PCK4BITS(0,0,0,0,0,0,0,0), // e8 - ef
+PCK4BITS(0,0,0,0,0,0,0,0), // f0 - f7
+PCK4BITS(0,0,0,0,0,0,4,5) // f8 - ff
+};
+
+
+static PRUint32 UCS2LE_st [ 7] = {
+PCK4BITS( 6, 6, 7, 6, 4, 3,eError,eError),//00-07
+PCK4BITS(eError,eError,eError,eError,eItsMe,eItsMe,eItsMe,eItsMe),//08-0f
+PCK4BITS(eItsMe,eItsMe, 5, 5, 5,eError,eItsMe,eError),//10-17
+PCK4BITS( 5, 5, 5,eError, 5,eError, 6, 6),//18-1f
+PCK4BITS( 7, 6, 8, 8, 5, 5, 5,eError),//20-27
+PCK4BITS( 5, 5, 5,eError,eError,eError, 5, 5),//28-2f
+PCK4BITS( 5, 5, 5,eError, 5,eError,eStart,eStart) //30-37
+};
+
+static const PRUint32 UCS2LECharLenTable[] = {2, 2, 2, 2, 2, 2};
+
+SMModel UCS2LESMModel = {
+ {eIdxSft4bits, eSftMsk4bits, eBitSft4bits, eUnitMsk4bits, UCS2LE_cls },
+ 6,
+ {eIdxSft4bits, eSftMsk4bits, eBitSft4bits, eUnitMsk4bits, UCS2LE_st },
+ UCS2LECharLenTable,
+ "UTF-16LE",
+};
+
+
+static PRUint32 UTF8_cls [ 256 / 8 ] = {
+//PCK4BITS(0,1,1,1,1,1,1,1), // 00 - 07
+PCK4BITS(1,1,1,1,1,1,1,1), // 00 - 07 //allow 0x00 as a legal value
+PCK4BITS(1,1,1,1,1,1,0,0), // 08 - 0f
+PCK4BITS(1,1,1,1,1,1,1,1), // 10 - 17
+PCK4BITS(1,1,1,0,1,1,1,1), // 18 - 1f
+PCK4BITS(1,1,1,1,1,1,1,1), // 20 - 27
+PCK4BITS(1,1,1,1,1,1,1,1), // 28 - 2f
+PCK4BITS(1,1,1,1,1,1,1,1), // 30 - 37
+PCK4BITS(1,1,1,1,1,1,1,1), // 38 - 3f
+PCK4BITS(1,1,1,1,1,1,1,1), // 40 - 47
+PCK4BITS(1,1,1,1,1,1,1,1), // 48 - 4f
+PCK4BITS(1,1,1,1,1,1,1,1), // 50 - 57
+PCK4BITS(1,1,1,1,1,1,1,1), // 58 - 5f
+PCK4BITS(1,1,1,1,1,1,1,1), // 60 - 67
+PCK4BITS(1,1,1,1,1,1,1,1), // 68 - 6f
+PCK4BITS(1,1,1,1,1,1,1,1), // 70 - 77
+PCK4BITS(1,1,1,1,1,1,1,1), // 78 - 7f
+PCK4BITS(2,2,2,2,3,3,3,3), // 80 - 87
+PCK4BITS(4,4,4,4,4,4,4,4), // 88 - 8f
+PCK4BITS(4,4,4,4,4,4,4,4), // 90 - 97
+PCK4BITS(4,4,4,4,4,4,4,4), // 98 - 9f
+PCK4BITS(5,5,5,5,5,5,5,5), // a0 - a7
+PCK4BITS(5,5,5,5,5,5,5,5), // a8 - af
+PCK4BITS(5,5,5,5,5,5,5,5), // b0 - b7
+PCK4BITS(5,5,5,5,5,5,5,5), // b8 - bf
+PCK4BITS(0,0,6,6,6,6,6,6), // c0 - c7
+PCK4BITS(6,6,6,6,6,6,6,6), // c8 - cf
+PCK4BITS(6,6,6,6,6,6,6,6), // d0 - d7
+PCK4BITS(6,6,6,6,6,6,6,6), // d8 - df
+PCK4BITS(7,8,8,8,8,8,8,8), // e0 - e7
+PCK4BITS(8,8,8,8,8,9,8,8), // e8 - ef
+PCK4BITS(10,11,11,11,11,11,11,11), // f0 - f7
+PCK4BITS(12,13,13,13,14,15,0,0) // f8 - ff
+};
+
+
+static PRUint32 UTF8_st [ 26] = {
+PCK4BITS(eError,eStart,eError,eError,eError,eError, 12, 10),//00-07
+PCK4BITS( 9, 11, 8, 7, 6, 5, 4, 3),//08-0f
+PCK4BITS(eError,eError,eError,eError,eError,eError,eError,eError),//10-17
+PCK4BITS(eError,eError,eError,eError,eError,eError,eError,eError),//18-1f
+PCK4BITS(eItsMe,eItsMe,eItsMe,eItsMe,eItsMe,eItsMe,eItsMe,eItsMe),//20-27
+PCK4BITS(eItsMe,eItsMe,eItsMe,eItsMe,eItsMe,eItsMe,eItsMe,eItsMe),//28-2f
+PCK4BITS(eError,eError, 5, 5, 5, 5,eError,eError),//30-37
+PCK4BITS(eError,eError,eError,eError,eError,eError,eError,eError),//38-3f
+PCK4BITS(eError,eError,eError, 5, 5, 5,eError,eError),//40-47
+PCK4BITS(eError,eError,eError,eError,eError,eError,eError,eError),//48-4f
+PCK4BITS(eError,eError, 7, 7, 7, 7,eError,eError),//50-57
+PCK4BITS(eError,eError,eError,eError,eError,eError,eError,eError),//58-5f
+PCK4BITS(eError,eError,eError,eError, 7, 7,eError,eError),//60-67
+PCK4BITS(eError,eError,eError,eError,eError,eError,eError,eError),//68-6f
+PCK4BITS(eError,eError, 9, 9, 9, 9,eError,eError),//70-77
+PCK4BITS(eError,eError,eError,eError,eError,eError,eError,eError),//78-7f
+PCK4BITS(eError,eError,eError,eError,eError, 9,eError,eError),//80-87
+PCK4BITS(eError,eError,eError,eError,eError,eError,eError,eError),//88-8f
+PCK4BITS(eError,eError, 12, 12, 12, 12,eError,eError),//90-97
+PCK4BITS(eError,eError,eError,eError,eError,eError,eError,eError),//98-9f
+PCK4BITS(eError,eError,eError,eError,eError, 12,eError,eError),//a0-a7
+PCK4BITS(eError,eError,eError,eError,eError,eError,eError,eError),//a8-af
+PCK4BITS(eError,eError, 12, 12, 12,eError,eError,eError),//b0-b7
+PCK4BITS(eError,eError,eError,eError,eError,eError,eError,eError),//b8-bf
+PCK4BITS(eError,eError,eStart,eStart,eStart,eStart,eError,eError),//c0-c7
+PCK4BITS(eError,eError,eError,eError,eError,eError,eError,eError) //c8-cf
+};
+
+static const PRUint32 UTF8CharLenTable[] = {0, 1, 0, 0, 0, 0, 2, 3,
+ 3, 3, 4, 4, 5, 5, 6, 6 };
+
+SMModel UTF8SMModel = {
+ {eIdxSft4bits, eSftMsk4bits, eBitSft4bits, eUnitMsk4bits, UTF8_cls },
+ 16,
+ {eIdxSft4bits, eSftMsk4bits, eBitSft4bits, eUnitMsk4bits, UTF8_st },
+ UTF8CharLenTable,
+ "UTF-8",
+};
+