// Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies).

 // All rights reserved.

 // This component and the accompanying materials are made available

 // under the terms of "Eclipse Public License v1.0"

 // which accompanies this distribution, and is available

 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

 //

 // Initial Contributors:

 // Nokia Corporation - initial contribution.

 //

 // Contributors:

 //

 // Description:

 // ziparchive.h

 // $Revision: 1.1 $

 // 

 //

 #ifndef _EZIP_ARCHIVE_H_

 #define _EZIP_ARCHIVE_H_

 #include "localtypes.h"

 /**

 This class represents a zip archive

 @publishedAll

 @released

 */

 namespace TOLDEZIP

 {

 class CZipArchive: public CBase

 	{

 public:

     enum 

 		{	

 		KZipArchiveError 					= -256,

 	    KCentralDirectoryTrailerNotFound	= KZipArchiveError - 1,

 	    KCentralDirectoryTrailerInvalid		= KZipArchiveError - 3,

 	    KCompressionMethodNotSupported		= KZipArchiveError - 4,

 	    KLocalHeaderSignatureInvalid		= KZipArchiveError - 5,

 	    KMultiDiskArchivesNotSupported		= KZipArchiveError - 6,

 		KMemberNotFound						= KZipArchiveError - 7,

 		KZipArchiveMinError					= KZipArchiveError - 8

 		};

     enum TCompressionMethod 

 		{

 		EStored 		= 0,

 		EShrunk 		= 1,

 		EReducedCFOne	= 2,

 		EReducedCFTwo	= 3,

 		EReducedCFThree	= 4,

 		EReducedCFFour	= 5,

 		EImploded		= 6,

 		EReservedOne	= 7,

 		EDeflated		= 8,

 		EReservedTwo	= 9,

 		EPKWAREImploded	= 10

 		};

 protected:

     enum // Constants 

 		{

         KCentralDirectorySignature  		= 0x06054b50,

     	KCentralDirectoryHeaderSignature	= 0x02014b50,

     	KLocalHeaderSignature   			= 0x04034b50

 		};

 	enum // Lengths 

 		{

 		KCentralDirectoryTrailerFixedLength = 22,

 		KLocalHeaderFixedLength             = 30,

 		KCentralDirectoryHeaderFixedLength	= 46,

 		KSignatureLength                    =  4,

 		KMaxTrailerSearchLength             = 65536

 		};

 	enum // Offsets 

 		{

 		KCentralFileHeaderFileNameLengthOffset   = 28,

 		KCentralFileHeaderExtraFieldLengthOffset = 30,

 		KCentralFileHeaderFileNameOffset         = 46

 		};

 	/**

 	Represents the archive's central directory trailer - the central directory contains information

 	about files in the arhive

 	@publishedAll

 	@released

 	*/

     struct TCentralDirectoryTrailer 

 		{

         TUint32 iSignature;

 		TUint16 iDiskNumber;

 		TUint16 iStartDiskNumber;

 		TUint16 iLocalEntryCount;

 		TUint16 iTotalEntryCount;

 		TUint32 iSize;

 		TUint32 iOffset;

 		TUint16 iCommentLength;

 		// comment -- variable length

 		};

 	/**

 	Represents the archive's central directory header - the central directory contains information

 	about files in the arhive

 	@publishedAll

 	@released

 	*/

 	struct TCentralDirectoryHeader 

 		{

 		TUint32 iSignature;

 		TUint16 iMadeBy;

 		TUint16 iRequired;

 		TUint16 iFlags;

 		TUint16 iCompressionMethod;

 		TUint16 iLastModifiedFileTime;

 		TUint16 iLastModifiedFileDate;

 		TUint32 iCRC32;

 		TUint32 iCompressedSize;

 		TUint32 iUncompressedSize;

 		TUint16 iFileNameLength;

 		TUint16 iExtraFieldLength;

 		TUint16 iFileCommentLength;

 		TUint16 iDiskNumberStart;

 		TUint16 iInternalFileAttributes;

 		TUint32 iExternalFileAttributes;

 		TUint32 iLocalHeaderOffset;

 		// file name    -- variable length 

 		// extra field  -- variable length

 		// file comment -- variable length

 		};

 	/**

 	Represents the archive's local header

 	@publishedAll

 	@released

 	*/

 	struct TLocalHeader 

 		{

 		TUint32 iSignature;

 		TUint16 iVersionNeeded;

 		TUint16 iFlags;

 		TUint16 iCompressionMethod;

 		TUint16 iLastModifiedFileTime;

 		TUint16 iLastModifiedFileDate;

 		TUint32 iCRC32;

 		TUint32 iCompressedSize;

 		TUint32 iUncompressedSize;

 		TUint16 iFileNameLength;

 		TUint16 iExtraFieldLength;

 		// file name    -- variable length 

 		// extra field  -- variable length

 		};

 	};

 }//TOLDEZIP

 #endif /* !_ZIP_ARCHIVE_H_ */