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 //

    15 

    16 

    17 #ifndef _ZIP_ARCHIVE_H_

    18 #define _ZIP_ARCHIVE_H_

    19 

    20 #include <localtypes.h>

    21 

    22 /**

    23 This class represents a zip archive

    24 

    25 @publishedAll

    26 @released

    27 */

    28 class CZipArchive: public CBase

    29 	{

    30 public:

    31 

    32     enum 

    33 		{	

    34 		KZipArchiveError 					= -256,

    35 	    KCentralDirectoryTrailerNotFound	= KZipArchiveError - 1,

    36 	    KCentralDirectoryTrailerInvalid		= KZipArchiveError - 3,

    37 	    KCompressionMethodNotSupported		= KZipArchiveError - 4,

    38 	    KLocalHeaderSignatureInvalid		= KZipArchiveError - 5,

    39 	    KMultiDiskArchivesNotSupported		= KZipArchiveError - 6,

    40 		KMemberNotFound						= KZipArchiveError - 7,

    41 

    42 		KZipArchiveMinError					= KZipArchiveError - 8

    43 

    44 		};

    45     

    46     enum TCompressionMethod 

    47 		{

    48 		

    49 		EStored 		= 0,

    50 		EShrunk 		= 1,

    51 		EReducedCFOne	= 2,

    52 		EReducedCFTwo	= 3,

    53 		EReducedCFThree	= 4,

    54 		EReducedCFFour	= 5,

    55 		EImploded		= 6,

    56 		EReservedOne	= 7,

    57 		EDeflated		= 8,

    58 		EReservedTwo	= 9,

    59 		EPKWAREImploded	= 10

    60 		

    61 		};

    62 

    63 protected:

    64 

    65     enum // Constants 

    66 		{

    67     

    68         KCentralDirectorySignature  		= 0x06054b50,

    69     	KCentralDirectoryHeaderSignature	= 0x02014b50,

    70     	KLocalHeaderSignature   			= 0x04034b50

    71 		};

    72 	

    73 	enum // Lengths 

    74 		{

    75 	

    76 		KCentralDirectoryTrailerFixedLength = 22,

    77 		KLocalHeaderFixedLength             = 30,

    78 		KCentralDirectoryHeaderFixedLength	= 46,

    79 		KSignatureLength                    =  4,

    80 		KMaxTrailerSearchLength             = 65536

    81 		};

    82 	

    83 	enum // Offsets 

    84 		{

    85 	

    86 		KCentralFileHeaderFileNameLengthOffset   = 28,

    87 		KCentralFileHeaderExtraFieldLengthOffset = 30,

    88 		KCentralFileHeaderFileNameOffset         = 46

    89 		};

    90 	

    91 	/**

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

    93 	about files in the arhive

    94 

    95 	@publishedAll

    96 	@released

    97 	*/

    98     struct TCentralDirectoryTrailer 

    99 		{

   100         TUint32 iSignature;

   101 		TUint16 iDiskNumber;

   102 		TUint16 iStartDiskNumber;

   103 		TUint16 iLocalEntryCount;

   104 		TUint16 iTotalEntryCount;

   105 		TUint32 iSize;

   106 		TUint32 iOffset;

   107 		TUint16 iCommentLength;

   108 		// comment -- variable length

   109 		};

   110 

   111 	/**

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

   113 	about files in the arhive

   114 

   115 	@publishedAll

   116 	@released

   117 	*/

   118 	struct TCentralDirectoryHeader 

   119 		{

   120 		TUint32 iSignature;

   121 		TUint16 iMadeBy;

   122 		TUint16 iRequired;

   123 		TUint16 iFlags;

   124 		TUint16 iCompressionMethod;

   125 		TUint16 iLastModifiedFileTime;

   126 		TUint16 iLastModifiedFileDate;

   127 		TUint32 iCRC32;

   128 		TUint32 iCompressedSize;

   129 		TUint32 iUncompressedSize;

   130 		TUint16 iFileNameLength;

   131 		TUint16 iExtraFieldLength;

   132 		TUint16 iFileCommentLength;

   133 		TUint16 iDiskNumberStart;

   134 		TUint16 iInternalFileAttributes;

   135 		TUint32 iExternalFileAttributes;

   136 		TUint32 iLocalHeaderOffset;

   137 		// file name    -- variable length 

   138 		// extra field  -- variable length

   139 		// file comment -- variable length

   140 		};

   141 

   142 	/**

   143 	Represents the archive's local header

   144 

   145 	@publishedAll

   146 	@released

   147 	*/

   148 	struct TLocalHeader 

   149 		{

   150 		TUint32 iSignature;

   151 		TUint16 iVersionNeeded;

   152 		TUint16 iFlags;

   153 		TUint16 iCompressionMethod;

   154 		TUint16 iLastModifiedFileTime;

   155 		TUint16 iLastModifiedFileDate;

   156 		TUint32 iCRC32;

   157 		TUint32 iCompressedSize;

   158 		TUint32 iUncompressedSize;

   159 		TUint16 iFileNameLength;

   160 		TUint16 iExtraFieldLength;

   161 		// file name    -- variable length 

   162 		// extra field  -- variable length

   163 		};

   164 	};

   165 

   166 #endif /* !_ZIP_ARCHIVE_H_ */

   167