// 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 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:

// $Revision: 1.1 $

// 

//

#ifndef _ZIP_FILE_H_

#define _ZIP_FILE_H_

#include <e32std.h>

#include <s32file.h>

#include <charconv.h>

#include "localtypes.h"

#include "ziparchive.h"

#include "zipfilememberinputstream.h"

#include <zipfilememberiterator.h>

#include <zipfilemember.h>

// Forward Class Declaration(s)

class CFileInputStream;

class CZipFileMemberIterator;

class CZipFileMember;

namespace ContentAccess

	{

	class CData;

	}

// End of Forward Class Declaration(s)

/** 

A CZipFile represents a ZIP archive contained in a single file. 

Multi file zip archives are not supported.

@publishedAll

@released

*/

class CZipFile : public CZipArchive

	{

	friend class RZipFileMemberReaderStream;

	friend class CZipFileMemberIterator;

	public:

		/**	ZipFile error enumeration.

		*/

		enum

			{

			/** Cannot read file directory in the archive file*/

			KZipFileError 		= KZipArchiveMinError - 1,

			/** File not found error. It is not used in current implemenation*/

			KZipFileNotFound	= KZipFileError - 1,

			/** File IO error.Any error occurs during a archive file is readed. 

			For examples, any error about reading number of disk,

			an offset of signature, or the content of file is non-readable.

			*/

			KZipFileIOError 	= KZipFileError - 2

			};

	public:

		IMPORT_C static CZipFile* NewL(RFs& aFs, RFile& aFile);	

		IMPORT_C static CZipFile* NewL(RFs& aFs, const TDesC& aFileName);

		IMPORT_C CZipFile(RFs& aFs, const TDesC& aFileName);

		IMPORT_C TInt OpenL(void);

		IMPORT_C void Close(void);

		IMPORT_C virtual ~CZipFile();

	protected:

		IMPORT_C void ConstructL(const TDesC& aFileName);

		IMPORT_C void ConstructL(RFile& aFile);

	public:

		IMPORT_C TInt Size(TInt& aSize) const;

		IMPORT_C CZipFileMember* MemberL(const TDesC& aName);

		IMPORT_C CZipFileMember* CaseInsensitiveMemberL(const TDesC& aName);

		IMPORT_C CZipFileMember* CaseSensitiveOrCaseInsensitiveMemberL(const TDesC& aName);

		IMPORT_C TInt GetInputStreamL(const CZipFileMember* aMember, RZipFileMemberReaderStream*& aStream);

  		IMPORT_C CZipFileMemberIterator* GetMembersL(void);

protected:

	/** 

	Internal representation of a compressed file in a zipfile

	@publishedAll

	@released

	*/

	struct TMemberPointer

		{

		/** the name of a compressed file*/

		TFileName*  iName;

		/** Not used in current implementation*/

		TUint32		iCentralHeaderOffset;

		/** The local offset of header in a compressed file*/

		TUint32	iLocalHeaderOffset;

		/** CRC with 32 bits length in a compressed file*/

		TUint32 iCRC32;

		/** The size of compressed file */	

		TUint32	iCompressedSize;

		/** The size of file without compressed*/

		TUint32	iUncompressedSize;

		};

protected:

	TInt FindCentralDirectoryTrailer(TUint32& offset);

    TInt ReadCentralDirectoryTrailer(TUint32 offset, TCentralDirectoryTrailer&);

    TInt ReadCentralDirectoryHeaderL(TCentralDirectoryHeader&, TMemberPointer&,

    	CCnvCharacterSetConverter* aConverter, TInt aConverterState);

	TInt ReadLocalHeader(TUint32, TLocalHeader&);

	const TMemberPointer* FindMemberPointer(const TDesC&, TBool);

    TInt LoadMemberPointersL(void);

	RZipFileMemberReaderStream*   MakeInputStreamL(TUint32, TUint32, TUint32, TUint32);

    CZipFileMember* MakeMemberL(TInt);

    CZipFileMember* MakeMemberL(const TMemberPointer&, const TLocalHeader&);

    // File I/O Support

    void OpenFileL(const TDesC& aFileName);

    TInt Read(TByte*, TUint32);

    TInt Read(TUint16&);

    TInt Read(TUint32&);

    TInt Seek(TInt);

	// Misc

	void DeleteMemberPointers(void);

private:

    const TDesC&				iFileName;

    TUint32 iFileLength;

	/** The central directory of ZIP File Trailer*/

	TCentralDirectoryTrailer iTrailer;

	/** The pointer to a a compressed file in a zipfile*/

	TMemberPointer*	iMemberPointers;

	RFs& iFs;

	/** The pointer to CData object created from a zip file*/

	ContentAccess::CData* iData;

	};

#endif /* !_ZIP_FILE_H_ */