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159 lines
5.2 KiB
C++
159 lines
5.2 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:expandtab:shiftwidth=2:tabstop=2:
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*/
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Jungshik Shin <jshin@mailaps.org>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsUnicodeToUTF32_h___
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#define nsUnicodeToUTF32_h___
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//----------------------------------------------------------------------
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// Class nsUnicodeToUTF32 [declaration]
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/**
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* A character set converter from UTF-32 family to Unicode.
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* The base class for UTF-32/UTF-32BE/UTF-32LE to Unicode converters.
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* @created 08/Dec/2002
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* @author Jungshik Shin
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*/
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class nsUnicodeToUTF32Base : public nsIUnicodeEncoder
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{
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NS_DECL_ISUPPORTS
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protected:
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/**
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* Class constructor. accessible only by child classes
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*/
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nsUnicodeToUTF32Base() {mBOM = 0; mHighSurrogate = 0;}
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virtual ~nsUnicodeToUTF32Base() {}
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PRUnichar mHighSurrogate;
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NS_IMETHOD GetMaxLength(const PRUnichar * aSrc, PRInt32 aSrcLength,
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PRInt32 * aDestLength);
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//--------------------------------------------------------------------
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// Subclassing of nsIUnicodeEncoder class [declaration]
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NS_IMETHOD Reset() {mBOM = 0; mHighSurrogate = 0; return NS_OK;}
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NS_IMETHOD FillInfo(PRUint32* aInfo);
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NS_IMETHOD SetOutputErrorBehavior(PRInt32 aBehavior,
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nsIUnicharEncoder * aEncoder,
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PRUnichar aChar)
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{return NS_OK;}
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protected:
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PRUnichar mBOM;
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};
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//----------------------------------------------------------------------
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// Class nsUnicodeToUTF32BE [declaration]
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/**
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* A character set converter from Unicode to UTF-32BE.
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* A subclass of UnicodeToUTF32Base.
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* @created 08/Dec/2002
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* @author Jungshik Shin
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*/
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class nsUnicodeToUTF32BE : public nsUnicodeToUTF32Base
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{
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public:
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//--------------------------------------------------------------------
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// Subclassing of nsIUnicodeEncoder class [declaration]
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NS_IMETHOD Convert(const PRUnichar * aSrc, PRInt32 * aSrcLength,
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char * aDest, PRInt32 * aDestLength);
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NS_IMETHOD Finish(char * aDest, PRInt32 * aDestLength);
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};
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//----------------------------------------------------------------------
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// Class nsUnicodeToUTF32LE [declaration]
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/**
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* A character set converter from Unicode to UTF-32LE.
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* A subclass of UnicodeToUTF32Base.
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* @created 08/Dec/2002
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* @author Jungshik Shin
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*/
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class nsUnicodeToUTF32LE : public nsUnicodeToUTF32Base
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{
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public:
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//--------------------------------------------------------------------
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// Subclassing of nsIUnicodeEncoder class [declaration]
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NS_IMETHOD Convert(const PRUnichar * aSrc, PRInt32 * aSrcLength,
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char * aDest, PRInt32 * aDestLength);
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NS_IMETHOD Finish(char * aDest, PRInt32 * aDestLength);
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};
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//----------------------------------------------------------------------
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// Class nsUnicodeToUTF32 [declaration]
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/**
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* A character set converter from Unicode to UTF-32.
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* A subclass of UnicodeToUTF32Base.
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* @created 08/Dec/2002
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* @author Jungshik Shin
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*/
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#ifdef IS_LITTLE_ENDIAN
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class nsUnicodeToUTF32 : public nsUnicodeToUTF32LE
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#elif defined(IS_BIG_ENDIAN)
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class nsUnicodeToUTF32 : public nsUnicodeToUTF32BE
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#else
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#error "Unknown endianness"
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#endif
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{
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public:
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nsUnicodeToUTF32() {mBOM = 0xFEFF; mHighSurrogate = 0;};
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//--------------------------------------------------------------------
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// Subclassing of nsUnicodeToUTF32Base class [declaration]
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NS_IMETHOD Reset() {mBOM = 0xFEFF; mHighSurrogate = 0; return NS_OK;};
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};
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#endif /* nsUnicodeToUTF32_h___ */
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