genericservices/httputils/inc/EscapeUtils.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 02 Feb 2010 02:01:42 +0200
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// Copyright (c) 2001-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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// This file contains the API definition for escape enoding functionality
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// and UNICODE/UTF8 conversion. Escape encoding is performed as specified
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// by RFC2396.
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// 
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//
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/**
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 @file EscapeUtils.h
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 @publishedAll
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 @released
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*/
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#ifndef __ESCAPEUTILS_H__
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#define __ESCAPEUTILS_H__
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// System includes
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//
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#include <e32base.h>
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#include <uriutilscommon.h>
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/**
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Comments : Provides an API to allow data to be escape encoded and decoded. 
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Also provide an API for converting a UNICODE data (16-bit descriptor) into 
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UTF8 data (8-bit descriptor) and vice-verse.
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@publishedAll
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@released
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@since 6.0
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*/
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class EscapeUtils
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	{
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public:	// Enums
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/**
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	enum	TEscapeMode
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	Enum defining escaping modes. Each mode has a different set of reserved characters.
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	These are based on various uri components, as decribed in RFC2396.
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 */
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	enum TEscapeMode
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		{
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		/** Default mode, which has no reserved characters 	*/
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		EEscapeNormal	= 0,
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		/** Mode specifying reserved characters in a uri query - ;/?:@&=+$,[] 	*/ 
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		EEscapeQuery,
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		/** Mode specifying reserved characters in a uri path - /;=?[]  */
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		EEscapePath,
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		/** Mode specifying reserved characters in a uri authority - /;:@?[]  */
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		EEscapeAuth,
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		/** Mode specifying reserved characters in a URL ;/?:@&=+$[]!\'()~  */
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		EEscapeUrlEncoded
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		};
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public:	// Methods
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	IMPORT_C static HBufC8* EscapeEncodeL(const TDesC8& aData, TEscapeMode aMode);
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	IMPORT_C static HBufC16* EscapeEncodeL(const TDesC16& aData, TEscapeMode aMode);
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	IMPORT_C static HBufC8* EscapeEncodeL(const TDesC8& aData, const TDesC8& aReservedChars);
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	IMPORT_C static HBufC16* EscapeEncodeL(const TDesC16& aData, const TDesC16& aReservedChars);
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	IMPORT_C static HBufC8* EscapeDecodeL(const TDesC8& aData);
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	IMPORT_C static HBufC16* EscapeDecodeL(const TDesC16& aData);
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	IMPORT_C static HBufC8* ConvertFromUnicodeToUtf8L(const TDesC& aData);
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	IMPORT_C static HBufC* ConvertToUnicodeFromUtf8L(const TDesC8& aData);
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	IMPORT_C static TBool IsExcludedChar(TChar aChar);
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	IMPORT_C static TBool IsEscapeTriple(const TDesC8& aData, TInt& aHexValue);
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	IMPORT_C static TBool IsEscapeTriple(const TDesC16& aData, TInt& aHexValue);
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	IMPORT_C static HBufC8* SpecificEscapeEncodeL ( const TDesC8& aData, const TDesC8& aCharsToEscape );
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	static HBufC8*  ReEscapeEncodeL(const TDesC8& aData);
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private: // Dummy Method
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	IMPORT_C static HBufC8* DummyForwardingFunctionForCompatibility( const TDesC8& aData, const TDesC8& aCharsToEscape );
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	};
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#endif	// __ESCAPEUTILS_H__