// Copyright (c) 2001-2009 Nokia Corporation and/or its subsidiary(-ies).

 // All rights reserved.

 // This component and the accompanying materials are made available

 // under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members

 // which accompanies this distribution, and is available

 // at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".

 //

 // Initial Contributors:

 // Nokia Corporation - initial contribution.

 //

 // Contributors:

 //

 // Description:

 // This file contains the API definition for escape enoding functionality

 // and UNICODE/UTF8 conversion. Escape encoding is performed as specified

 // by RFC2396.

 // 

 //

 /**

  @file EscapeUtils.h

  @publishedAll

  @released

 */

 #ifndef __ESCAPEUTILS_H__

 #define __ESCAPEUTILS_H__

 // System includes

 //

 #include <e32base.h>

 #include <uriutilscommon.h>

 /**

 Comments : Provides an API to allow data to be escape encoded and decoded. 

 Also provide an API for converting a UNICODE data (16-bit descriptor) into 

 UTF8 data (8-bit descriptor) and vice-verse.

 @publishedAll

 @released

 @since 6.0

 */

 class EscapeUtils

 	{

 public:	// Enums

 /**

 	enum	TEscapeMode

 	Enum defining escaping modes. Each mode has a different set of reserved characters.

 	These are based on various uri components, as decribed in RFC2396.

  */

 	enum TEscapeMode

 		{

 		/** Default mode, which has no reserved characters 	*/

 		EEscapeNormal	= 0,

 		/** Mode specifying reserved characters in a uri query - ;/?:@&=+$,[] 	*/ 

 		EEscapeQuery,

 		/** Mode specifying reserved characters in a uri path - /;=?[]  */

 		EEscapePath,

 		/** Mode specifying reserved characters in a uri authority - /;:@?[]  */

 		EEscapeAuth,

 		/** Mode specifying reserved characters in a URL ;/?:@&=+$[]!\'()~  */

 		EEscapeUrlEncoded

 		};

 public:	// Methods

 	IMPORT_C static HBufC8* EscapeEncodeL(const TDesC8& aData, TEscapeMode aMode);

 	IMPORT_C static HBufC16* EscapeEncodeL(const TDesC16& aData, TEscapeMode aMode);

 	IMPORT_C static HBufC8* EscapeEncodeL(const TDesC8& aData, const TDesC8& aReservedChars);

 	IMPORT_C static HBufC16* EscapeEncodeL(const TDesC16& aData, const TDesC16& aReservedChars);

 	IMPORT_C static HBufC8* EscapeDecodeL(const TDesC8& aData);

 	IMPORT_C static HBufC16* EscapeDecodeL(const TDesC16& aData);

 	IMPORT_C static HBufC8* ConvertFromUnicodeToUtf8L(const TDesC& aData);

 	IMPORT_C static HBufC* ConvertToUnicodeFromUtf8L(const TDesC8& aData);

 	IMPORT_C static TBool IsExcludedChar(TChar aChar);

 	IMPORT_C static TBool IsEscapeTriple(const TDesC8& aData, TInt& aHexValue);

 	IMPORT_C static TBool IsEscapeTriple(const TDesC16& aData, TInt& aHexValue);

 	IMPORT_C static HBufC8* SpecificEscapeEncodeL ( const TDesC8& aData, const TDesC8& aCharsToEscape );

 	static HBufC8*  ReEscapeEncodeL(const TDesC8& aData);

 private: // Dummy Method

 	IMPORT_C static HBufC8* DummyForwardingFunctionForCompatibility( const TDesC8& aData, const TDesC8& aCharsToEscape );

 	};

 #endif	// __ESCAPEUTILS_H__