1 ziparchive.h

     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 the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 // $Revision: 1.1 $

    15 // 

    16 //

    17 

    18 #ifndef _ZIP_ARCHIVE_H_

    19 #define _ZIP_ARCHIVE_H_

    20 

    21 #include "localtypes.h"

    22 

    23 /**

    24 This class represents a zip archive

    25 

    26 @publishedAll

    27 @released

    28 */

    29 class CZipArchive: public CBase

    30 	{

    31 public:

    32 

    33     enum 

    34 		{	

    35 		KZipArchiveError 					= -256,

    36 	    KCentralDirectoryTrailerNotFound	= KZipArchiveError - 1,

    37 	    KCentralDirectoryTrailerInvalid		= KZipArchiveError - 3,

    38 	    KCompressionMethodNotSupported		= KZipArchiveError - 4,

    39 	    KLocalHeaderSignatureInvalid		= KZipArchiveError - 5,

    40 	    KMultiDiskArchivesNotSupported		= KZipArchiveError - 6,

    41 		KMemberNotFound						= KZipArchiveError - 7,

    42 

    43 		KZipArchiveMinError					= KZipArchiveError - 8

    44 

    45 		};

    46     

    47     enum TCompressionMethod 

    48 		{

    49 		

    50 		EStored 		= 0,

    51 		EShrunk 		= 1,

    52 		EReducedCFOne	= 2,

    53 		EReducedCFTwo	= 3,

    54 		EReducedCFThree	= 4,

    55 		EReducedCFFour	= 5,

    56 		EImploded		= 6,

    57 		EReservedOne	= 7,

    58 		EDeflated		= 8,

    59 		EReservedTwo	= 9,

    60 		EPKWAREImploded	= 10

    61 		

    62 		};

    63 

    64 protected:

    65 

    66     enum // Constants 

    67 		{

    68     

    69         KCentralDirectorySignature  		= 0x06054b50,

    70     	KCentralDirectoryHeaderSignature	= 0x02014b50,

    71     	KLocalHeaderSignature   			= 0x04034b50

    72 		};

    73 	

    74 	enum // Lengths 

    75 		{

    76 	

    77 		KCentralDirectoryTrailerFixedLength = 22,

    78 		KLocalHeaderFixedLength             = 30,

    79 		KCentralDirectoryHeaderFixedLength	= 46,

    80 		KSignatureLength                    =  4,

    81 		KMaxTrailerSearchLength             = 65536

    82 		};

    83 	

    84 	enum // Offsets 

    85 		{

    86 	

    87 		KCentralFileHeaderFileNameLengthOffset   = 28,

    88 		KCentralFileHeaderExtraFieldLengthOffset = 30,

    89 		KCentralFileHeaderFileNameOffset         = 46

    90 		};

    91 	

    92 	/**

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

    94 	about files in the arhive

    95 

    96 	@publishedAll

    97 	@released

    98 	*/

    99     struct TCentralDirectoryTrailer 

   100 		{

   101         TUint32 iSignature;

   102 		TUint16 iDiskNumber;

   103 		TUint16 iStartDiskNumber;

   104 		TUint16 iLocalEntryCount;

   105 		TUint16 iTotalEntryCount;

   106 		TUint32 iSize;

   107 		TUint32 iOffset;

   108 		TUint16 iCommentLength;

   109 		// comment -- variable length

   110 		};

   111 

   112 	/**

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

   114 	about files in the arhive

   115 

   116 	@publishedAll

   117 	@released

   118 	*/

   119 	struct TCentralDirectoryHeader 

   120 		{

   121 		TUint32 iSignature;

   122 		TUint16 iMadeBy;

   123 		TUint16 iRequired;

   124 		TUint16 iFlags;

   125 		TUint16 iCompressionMethod;

   126 		TUint16 iLastModifiedFileTime;

   127 		TUint16 iLastModifiedFileDate;

   128 		TUint32 iCRC32;

   129 		TUint32 iCompressedSize;

   130 		TUint32 iUncompressedSize;

   131 		TUint16 iFileNameLength;

   132 		TUint16 iExtraFieldLength;

   133 		TUint16 iFileCommentLength;

   134 		TUint16 iDiskNumberStart;

   135 		TUint16 iInternalFileAttributes;

   136 		TUint32 iExternalFileAttributes;

   137 		TUint32 iLocalHeaderOffset;

   138 		// file name    -- variable length 

   139 		// extra field  -- variable length

   140 		// file comment -- variable length

   141 		};

   142 

   143 	/**

   144 	Represents the archive's local header

   145 

   146 	@publishedAll

   147 	@released

   148 	*/

   149 	struct TLocalHeader 

   150 		{

   151 		TUint32 iSignature;

   152 		TUint16 iVersionNeeded;

   153 		TUint16 iFlags;

   154 		TUint16 iCompressionMethod;

   155 		TUint16 iLastModifiedFileTime;

   156 		TUint16 iLastModifiedFileDate;

   157 		TUint32 iCRC32;

   158 		TUint32 iCompressedSize;

   159 		TUint32 iUncompressedSize;

   160 		TUint16 iFileNameLength;

   161 		TUint16 iExtraFieldLength;

   162 		// file name    -- variable length 

   163 		// extra field  -- variable length

   164 		};

   165 	};

   166 

   167 #endif /* !_ZIP_ARCHIVE_H_ */