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

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

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

     5 // which accompanies this distribution, and is available

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

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 // ziparchive.h

    15 // $Revision: 1.1 $

    16 // 

    17 //

    18 

    19 #ifndef _EZIP_ARCHIVE_H_

    20 #define _EZIP_ARCHIVE_H_

    21 

    22 #include "localtypes.h"

    23 

    24 /**

    25 This class represents a zip archive

    26 

    27 @publishedAll

    28 @released

    29 */

    30 namespace TOLDEZIP

    31 {

    32 class CZipArchive: public CBase

    33 	{

    34 public:

    35 

    36     enum 

    37 		{	

    38 		KZipArchiveError 					= -256,

    39 	    KCentralDirectoryTrailerNotFound	= KZipArchiveError - 1,

    40 	    KCentralDirectoryTrailerInvalid		= KZipArchiveError - 3,

    41 	    KCompressionMethodNotSupported		= KZipArchiveError - 4,

    42 	    KLocalHeaderSignatureInvalid		= KZipArchiveError - 5,

    43 	    KMultiDiskArchivesNotSupported		= KZipArchiveError - 6,

    44 		KMemberNotFound						= KZipArchiveError - 7,

    45 

    46 		KZipArchiveMinError					= KZipArchiveError - 8

    47 

    48 		};

    49     

    50     enum TCompressionMethod 

    51 		{

    52 		

    53 		EStored 		= 0,

    54 		EShrunk 		= 1,

    55 		EReducedCFOne	= 2,

    56 		EReducedCFTwo	= 3,

    57 		EReducedCFThree	= 4,

    58 		EReducedCFFour	= 5,

    59 		EImploded		= 6,

    60 		EReservedOne	= 7,

    61 		EDeflated		= 8,

    62 		EReservedTwo	= 9,

    63 		EPKWAREImploded	= 10

    64 		

    65 		};

    66 

    67 protected:

    68 

    69     enum // Constants 

    70 		{

    71     

    72         KCentralDirectorySignature  		= 0x06054b50,

    73     	KCentralDirectoryHeaderSignature	= 0x02014b50,

    74     	KLocalHeaderSignature   			= 0x04034b50

    75 		};

    76 	

    77 	enum // Lengths 

    78 		{

    79 	

    80 		KCentralDirectoryTrailerFixedLength = 22,

    81 		KLocalHeaderFixedLength             = 30,

    82 		KCentralDirectoryHeaderFixedLength	= 46,

    83 		KSignatureLength                    =  4,

    84 		KMaxTrailerSearchLength             = 65536

    85 		};

    86 	

    87 	enum // Offsets 

    88 		{

    89 	

    90 		KCentralFileHeaderFileNameLengthOffset   = 28,

    91 		KCentralFileHeaderExtraFieldLengthOffset = 30,

    92 		KCentralFileHeaderFileNameOffset         = 46

    93 		};

    94 	

    95 	/**

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

    97 	about files in the arhive

    98 

    99 	@publishedAll

   100 	@released

   101 	*/

   102     struct TCentralDirectoryTrailer 

   103 		{

   104         TUint32 iSignature;

   105 		TUint16 iDiskNumber;

   106 		TUint16 iStartDiskNumber;

   107 		TUint16 iLocalEntryCount;

   108 		TUint16 iTotalEntryCount;

   109 		TUint32 iSize;

   110 		TUint32 iOffset;

   111 		TUint16 iCommentLength;

   112 		// comment -- variable length

   113 		};

   114 

   115 	/**

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

   117 	about files in the arhive

   118 

   119 	@publishedAll

   120 	@released

   121 	*/

   122 	struct TCentralDirectoryHeader 

   123 		{

   124 		TUint32 iSignature;

   125 		TUint16 iMadeBy;

   126 		TUint16 iRequired;

   127 		TUint16 iFlags;

   128 		TUint16 iCompressionMethod;

   129 		TUint16 iLastModifiedFileTime;

   130 		TUint16 iLastModifiedFileDate;

   131 		TUint32 iCRC32;

   132 		TUint32 iCompressedSize;

   133 		TUint32 iUncompressedSize;

   134 		TUint16 iFileNameLength;

   135 		TUint16 iExtraFieldLength;

   136 		TUint16 iFileCommentLength;

   137 		TUint16 iDiskNumberStart;

   138 		TUint16 iInternalFileAttributes;

   139 		TUint32 iExternalFileAttributes;

   140 		TUint32 iLocalHeaderOffset;

   141 		// file name    -- variable length 

   142 		// extra field  -- variable length

   143 		// file comment -- variable length

   144 		};

   145 

   146 	/**

   147 	Represents the archive's local header

   148 

   149 	@publishedAll

   150 	@released

   151 	*/

   152 	struct TLocalHeader 

   153 		{

   154 		TUint32 iSignature;

   155 		TUint16 iVersionNeeded;

   156 		TUint16 iFlags;

   157 		TUint16 iCompressionMethod;

   158 		TUint16 iLastModifiedFileTime;

   159 		TUint16 iLastModifiedFileDate;

   160 		TUint32 iCRC32;

   161 		TUint32 iCompressedSize;

   162 		TUint32 iUncompressedSize;

   163 		TUint16 iFileNameLength;

   164 		TUint16 iExtraFieldLength;

   165 		// file name    -- variable length 

   166 		// extra field  -- variable length

   167 		};

   168 	};

   169 }//TOLDEZIP

   170 #endif /* !_ZIP_ARCHIVE_H_ */

   171