gecko/intl/uconv/util/nsUnicodeDecodeHelper.h

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/* -*- 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 of 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 ***** */
#ifndef nsUnicodeDecodeHelper_h__
#define nsUnicodeDecodeHelper_h__
#include "nsIUnicodeDecoder.h"
#include "uconvutil.h"
//----------------------------------------------------------------------
// Class nsUnicodeDecodeHelper [declaration]
/**
*
* @created 18/Mar/1998
* @author Catalin Rotaru [CATA]
*/
class nsUnicodeDecodeHelper
{
public:
/**
* Converts data using a lookup table and optional shift table
*/
static nsresult ConvertByTable(const char * aSrc, PRInt32 * aSrcLength,
PRUnichar * aDest, PRInt32 * aDestLength,
uScanClassID aScanClass,
uShiftInTable * aShiftInTable,
uMappingTable * aMappingTable,
PRBool aErrorSignal = PR_FALSE);
/**
* Converts data using a set of lookup tables.
*/
static nsresult ConvertByMultiTable(const char * aSrc, PRInt32 * aSrcLength,
PRUnichar * aDest, PRInt32 * aDestLength, PRInt32 aTableCount,
const uRange * aRangeArray, uScanClassID * aScanClassArray,
uMappingTable ** aMappingTable, PRBool aErrorSignal = PR_FALSE);
/**
* Converts data using a fast lookup table.
*/
static nsresult ConvertByFastTable(const char * aSrc, PRInt32 * aSrcLength,
PRUnichar * aDest, PRInt32 * aDestLength, const PRUnichar * aFastTable,
PRInt32 aTableSize, PRBool aErrorSignal);
/**
* Create a cache-like fast lookup table from a normal one.
*/
static nsresult CreateFastTable(uMappingTable * aMappingTable,
PRUnichar * aFastTable, PRInt32 aTableSize);
};
#endif // nsUnicodeDecodeHelper_h__