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 : *
24 : * Alternatively, the contents of this file may be used under the terms of
25 : * either of the GNU General Public License Version 2 or later (the "GPL"),
26 : * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
27 : * in which case the provisions of the GPL or the LGPL are applicable instead
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36 : * ***** END LICENSE BLOCK ***** */
37 :
38 : #ifndef nsUnicodeToUTF7_h___
39 : #define nsUnicodeToUTF7_h___
40 :
41 : #include "nsUCSupport.h"
42 :
43 : //----------------------------------------------------------------------
44 : // Class nsBasicUTF7Encoder [declaration]
45 :
46 : /**
47 : * Basic class for a character set converter from Unicode to UTF-7.
48 : *
49 : * @created 03/Jun/1999
50 : * @author Catalin Rotaru [CATA]
51 : */
52 : class nsBasicUTF7Encoder : public nsEncoderSupport
53 54 : {
54 : public:
55 :
56 : /**
57 : * Class constructor.
58 : */
59 : nsBasicUTF7Encoder(char aLastChar, char aEscChar);
60 :
61 : protected:
62 :
63 : PRInt32 mEncoding; // current encoding
64 : PRUint32 mEncBits;
65 : PRInt32 mEncStep;
66 : char mLastChar;
67 : char mEscChar;
68 :
69 : nsresult ShiftEncoding(PRInt32 aEncoding, char * aDest,
70 : PRInt32 * aDestLength);
71 : nsresult EncodeDirect(const PRUnichar * aSrc, PRInt32 * aSrcLength,
72 : char * aDest, PRInt32 * aDestLength);
73 : nsresult EncodeBase64(const PRUnichar * aSrc, PRInt32 * aSrcLength,
74 : char * aDest, PRInt32 * aDestLength);
75 : char ValueToChar(PRUint32 aValue);
76 : virtual bool DirectEncodable(PRUnichar aChar);
77 :
78 : //--------------------------------------------------------------------
79 : // Subclassing of nsEncoderSupport class [declaration]
80 :
81 : NS_IMETHOD ConvertNoBuffNoErr(const PRUnichar * aSrc, PRInt32 * aSrcLength,
82 : char * aDest, PRInt32 * aDestLength);
83 : NS_IMETHOD FinishNoBuff(char * aDest, PRInt32 * aDestLength);
84 : NS_IMETHOD Reset();
85 : };
86 :
87 : //----------------------------------------------------------------------
88 : // Class nsUnicodeToUTF7 [declaration]
89 :
90 : /**
91 : * A character set converter from Unicode to UTF-7.
92 : *
93 : * @created 03/Jun/1999
94 : * @author Catalin Rotaru [CATA]
95 : */
96 : class nsUnicodeToUTF7 : public nsBasicUTF7Encoder
97 104 : {
98 : public:
99 :
100 : /**
101 : * Class constructor.
102 : */
103 : nsUnicodeToUTF7();
104 :
105 : protected:
106 :
107 : virtual bool DirectEncodable(PRUnichar aChar);
108 : };
109 :
110 : #endif /* nsUnicodeToUTF7_h___ */
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