Back to index

lightning-sunbird  0.9+nobinonly
nsCP949ToUnicode.cpp
Go to the documentation of this file.
00001 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is mozilla.org code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 1998
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *   Jungshik Shin <jshin@mailaps.org>
00024  *
00025  * Alternatively, the contents of this file may be used under the terms of
00026  * either of the GNU General Public License Version 2 or later (the "GPL"),
00027  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00028  * in which case the provisions of the GPL or the LGPL are applicable instead
00029  * of those above. If you wish to allow use of your version of this file only
00030  * under the terms of either the GPL or the LGPL, and not to allow others to
00031  * use your version of this file under the terms of the MPL, indicate your
00032  * decision by deleting the provisions above and replace them with the notice
00033  * and other provisions required by the GPL or the LGPL. If you do not delete
00034  * the provisions above, a recipient may use your version of this file under
00035  * the terms of any one of the MPL, the GPL or the LGPL.
00036  *
00037  * ***** END LICENSE BLOCK ***** */
00038 
00039 #include "nsCP949ToUnicode.h"
00040 #include "nsUCvKODll.h"
00041 #include "nsUCConstructors.h"
00042 
00043 //----------------------------------------------------------------------
00044 // Global functions and data [declaration]
00045 
00046 static const PRUint16 g_ASCIIShiftTable[] =  {
00047   0, u1ByteCharset,
00048   ShiftCell(0,0,0,0,0,0,0,0)
00049 };
00050 
00051 // This is necessary to decode 8byte sequence representation of Hangul
00052 // syllables. This representation is uniq to EUC-KR and is not used
00053 // in CP949. However, this conveter is for both EUC-KR and CP949
00054 // so that this shift table is put here. See bug 131388. 
00055 static const PRUint16 g_DecomposedHangulShiftTable[] =  {
00056   0, uDecomposedHangulCharset,  
00057   ShiftCell(0,   0, 0, 0, 0, 0, 0, 0),
00058 };
00059 
00060 static const PRUint16 g_EUCKRShiftTable[] =  {
00061   0, u2BytesGRCharset,  
00062   ShiftCell(0,  0, 0, 0, 0, 0, 0, 0)
00063 };
00064 
00065 static const PRUint16 g_CP949HighShiftTable[] =  {
00066   0, u2BytesGR128Charset,  
00067   ShiftCell(0,  0, 0, 0, 0, 0, 0, 0)
00068 };
00069 
00070 static const PRUint16 g_CP949LowShiftTable[] =  {
00071   0, u2BytesCharset,  
00072   ShiftCell(0,  0, 0, 0, 0, 0, 0, 0)
00073 };
00074 
00075 // CP949(non-EUC-KR portion) to Unicode
00076 static const PRUint16 g_utCP949NoKSCHangulMapping[] = {
00077 #include "u20cp949hangul.ut"
00078 };
00079 
00080 static const uRange g_CP949Ranges[] = {
00081   { 0x00, 0x7E },
00082   { 0xA4, 0xA4 },   // 8byte seq. for Hangul syllables not available
00083                     // in pre-composed form in KS X 1001
00084   { 0xA1, 0xFE },
00085   { 0xA1, 0xC6 },   // CP949 extension B. ends at 0xC6.
00086   { 0x80, 0xA0 }
00087 };
00088 
00089 
00090 static const PRUint16 *g_CP949ShiftTableSet [] = {
00091   g_ASCIIShiftTable,
00092   g_DecomposedHangulShiftTable,
00093   g_EUCKRShiftTable,
00094   g_CP949HighShiftTable,
00095   g_CP949LowShiftTable
00096 };
00097 
00098 static const PRUint16 *g_CP949MappingTableSet [] ={
00099   g_ucvko_AsciiMapping,
00100   g_HangulNullMapping,
00101   g_utKSC5601Mapping,
00102   g_utCP949NoKSCHangulMapping,
00103   g_utCP949NoKSCHangulMapping
00104 //g_CP949HighMapping,
00105 //g_CP949LowMapping
00106 };
00107 
00108 
00109 NS_METHOD
00110 nsCP949ToUnicodeConstructor(nsISupports *aOuter, REFNSIID aIID,
00111                             void **aResult)
00112 {
00113   return CreateMultiTableDecoder(sizeof(g_CP949Ranges) / sizeof(g_CP949Ranges[0]),
00114                                  (const uRange*) &g_CP949Ranges,
00115                                  (uShiftTable**) &g_CP949ShiftTableSet, 
00116                                  (uMappingTable**) &g_CP949MappingTableSet, 1,
00117                                  aOuter, aIID, aResult);
00118 }
00119