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// Copyright (c) 2003-2009 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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//
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#ifndef _ZIP_ARCHIVE_H_
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#define _ZIP_ARCHIVE_H_
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#include <localtypes.h>
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/**
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This class represents a zip archive
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@publishedAll
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@released
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*/
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class CZipArchive: public CBase
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{
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public:
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enum
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{
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KZipArchiveError = -256,
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KCentralDirectoryTrailerNotFound = KZipArchiveError - 1,
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KCentralDirectoryTrailerInvalid = KZipArchiveError - 3,
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KCompressionMethodNotSupported = KZipArchiveError - 4,
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KLocalHeaderSignatureInvalid = KZipArchiveError - 5,
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KMultiDiskArchivesNotSupported = KZipArchiveError - 6,
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KMemberNotFound = KZipArchiveError - 7,
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KZipArchiveMinError = KZipArchiveError - 8
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};
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enum TCompressionMethod
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{
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EStored = 0,
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EShrunk = 1,
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EReducedCFOne = 2,
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EReducedCFTwo = 3,
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EReducedCFThree = 4,
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EReducedCFFour = 5,
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EImploded = 6,
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EReservedOne = 7,
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EDeflated = 8,
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EReservedTwo = 9,
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EPKWAREImploded = 10
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};
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protected:
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enum // Constants
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{
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KCentralDirectorySignature = 0x06054b50,
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KCentralDirectoryHeaderSignature = 0x02014b50,
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KLocalHeaderSignature = 0x04034b50
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};
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enum // Lengths
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{
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KCentralDirectoryTrailerFixedLength = 22,
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KLocalHeaderFixedLength = 30,
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KCentralDirectoryHeaderFixedLength = 46,
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KSignatureLength = 4,
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KMaxTrailerSearchLength = 65536
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};
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enum // Offsets
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{
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KCentralFileHeaderFileNameLengthOffset = 28,
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KCentralFileHeaderExtraFieldLengthOffset = 30,
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KCentralFileHeaderFileNameOffset = 46
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};
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/**
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Represents the archive's central directory trailer - the central directory contains information
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about files in the arhive
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@publishedAll
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@released
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*/
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struct TCentralDirectoryTrailer
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{
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TUint32 iSignature;
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TUint16 iDiskNumber;
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TUint16 iStartDiskNumber;
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TUint16 iLocalEntryCount;
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TUint16 iTotalEntryCount;
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TUint32 iSize;
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TUint32 iOffset;
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TUint16 iCommentLength;
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// comment -- variable length
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};
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/**
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Represents the archive's central directory header - the central directory contains information
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about files in the arhive
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@publishedAll
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@released
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*/
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struct TCentralDirectoryHeader
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{
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TUint32 iSignature;
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TUint16 iMadeBy;
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TUint16 iRequired;
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TUint16 iFlags;
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TUint16 iCompressionMethod;
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TUint16 iLastModifiedFileTime;
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TUint16 iLastModifiedFileDate;
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TUint32 iCRC32;
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TUint32 iCompressedSize;
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TUint32 iUncompressedSize;
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TUint16 iFileNameLength;
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TUint16 iExtraFieldLength;
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TUint16 iFileCommentLength;
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TUint16 iDiskNumberStart;
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TUint16 iInternalFileAttributes;
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TUint32 iExternalFileAttributes;
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TUint32 iLocalHeaderOffset;
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// file name -- variable length
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// extra field -- variable length
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// file comment -- variable length
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};
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/**
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Represents the archive's local header
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@publishedAll
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@released
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*/
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struct TLocalHeader
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{
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TUint32 iSignature;
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TUint16 iVersionNeeded;
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TUint16 iFlags;
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TUint16 iCompressionMethod;
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TUint16 iLastModifiedFileTime;
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TUint16 iLastModifiedFileDate;
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TUint32 iCRC32;
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TUint32 iCompressedSize;
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TUint32 iUncompressedSize;
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TUint16 iFileNameLength;
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TUint16 iExtraFieldLength;
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// file name -- variable length
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// extra field -- variable length
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};
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};
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#endif /* !_ZIP_ARCHIVE_H_ */
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