1 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 : /* ***** BEGIN LICENSE BLOCK *****
3 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 : *
5 : * The contents of this file are subject to the Mozilla Public License Version
6 : * 1.1 (the "License"); you may not use this file except in compliance with
7 : * the License. You may obtain a copy of the License at
8 : * http://www.mozilla.org/MPL/
9 : *
10 : * Software distributed under the License is distributed on an "AS IS" basis,
11 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 : * for the specific language governing rights and limitations under the
13 : * License.
14 : *
15 : * The Original Code is Mozilla Communicator client code.
16 : *
17 : * The Initial Developer of the Original Code is
18 : * Netscape Communications Corporation.
19 : * Portions created by the Initial Developer are Copyright (C) 1998
20 : * the Initial Developer. All Rights Reserved.
21 : *
22 : * Contributor(s):
23 : * Yueheng Xu, yueheng.xu@intel.com
24 : *
25 : * Alternatively, the contents of this file may be used under the terms of
26 : * either of the GNU General Public License Version 2 or later (the "GPL"),
27 : * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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37 : * ***** END LICENSE BLOCK ***** */
38 :
39 : #include "nsUnicodeToGB2312V2.h"
40 : #include "nsUCvCnDll.h"
41 : #include "gbku.h"
42 :
43 : //----------------------------------------------------------------------
44 : // Class nsUnicodeToGB2312V2 [implementation]
45 3 : nsUnicodeToGB2312V2::nsUnicodeToGB2312V2() :
46 3 : nsEncoderSupport(2)
47 : {
48 3 : mUtil.InitToGBKTable();
49 3 : }
50 :
51 1 : NS_IMETHODIMP nsUnicodeToGB2312V2::ConvertNoBuff(const PRUnichar * aSrc,
52 : PRInt32 * aSrcLength,
53 : char * aDest,
54 : PRInt32 * aDestLength)
55 : {
56 1 : PRInt32 iSrcLength = 0;
57 1 : PRInt32 iDestLength = 0;
58 1 : nsresult res = NS_OK;
59 :
60 13 : while (iSrcLength < *aSrcLength)
61 : {
62 : //if unicode's hi byte has something, it is not ASCII, must be a GB
63 11 : if(IS_ASCII(*aSrc))
64 : {
65 : // this is an ASCII
66 11 : *aDest = CAST_UNICHAR_TO_CHAR(*aSrc);
67 11 : aDest++; // increment 1 byte
68 11 : iDestLength +=1;
69 : } else {
70 : char byte1, byte2;
71 0 : if(mUtil.UnicodeToGBKChar(*aSrc, false, &byte1, &byte2))
72 : {
73 0 : if(iDestLength+2 > *aDestLength)
74 : {
75 0 : res = NS_OK_UENC_MOREOUTPUT;
76 0 : break;
77 : }
78 0 : aDest[0]=byte1;
79 0 : aDest[1]=byte2;
80 0 : aDest += 2; // increment 2 bytes
81 0 : iDestLength +=2; // each GB char count as two in char* string
82 : } else {
83 : // cannot convert
84 0 : res= NS_ERROR_UENC_NOMAPPING;
85 0 : iSrcLength++; // include length of the unmapped character
86 0 : break;
87 : }
88 : }
89 11 : iSrcLength++ ; // each unicode char just count as one in PRUnichar* string
90 11 : aSrc++;
91 11 : if ( iDestLength >= (*aDestLength) && (iSrcLength < *aSrcLength ))
92 : {
93 0 : res = NS_OK_UENC_MOREOUTPUT;
94 0 : break;
95 : }
96 : }
97 1 : *aDestLength = iDestLength;
98 1 : *aSrcLength = iSrcLength;
99 1 : return res;
100 : }
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