1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/ossrv/compressionlibs/ziplib/inc/zipfilememberinputstream.h Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,153 @@
1.4 +// Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies).
1.5 +// All rights reserved.
1.6 +// This component and the accompanying materials are made available
1.7 +// under the terms of "Eclipse Public License v1.0"
1.8 +// which accompanies this distribution, and is available
1.9 +// at the URL "http://www.eclipse.org/legal/epl-v10.html".
1.10 +//
1.11 +// Initial Contributors:
1.12 +// Nokia Corporation - initial contribution.
1.13 +//
1.14 +// Contributors:
1.15 +//
1.16 +// Description:
1.17 +//
1.18 +
1.19 +
1.20 +#ifndef _ZIP_FILE_MEMBER_INPUT_STREAM_H_
1.21 +#define _ZIP_FILE_MEMBER_INPUT_STREAM_H_
1.22 +
1.23 +#include <zlib.h>
1.24 +#include <localtypes.h>
1.25 +#include <s32file.h>
1.26 +
1.27 +class CZipFile;
1.28 +
1.29 +/**
1.30 +A RZipFileMemberReaderStream represents a input stream for compressed files in the archive.
1.31 +This is a friend class to CZipFile. In order to create a input stream for a file in the archive,
1.32 +CZipFile will call its member function GetInputStreamL() by passing a pointer to
1.33 +RZipFileMemberReaderStream and the function will return the input stream for the file
1.34 +Note: This class is actually a C class as it derives from CBase
1.35 +
1.36 +@publishedAll
1.37 +@released
1.38 +*/
1.39 +class RZipFileMemberReaderStream : public CBase
1.40 + {
1.41 +friend class CZipFile;
1.42 +
1.43 +public:
1.44 +
1.45 + IMPORT_C ~RZipFileMemberReaderStream();
1.46 + IMPORT_C TInt Read(TDes16& aDes, TInt aLength);
1.47 +
1.48 + /**
1.49 + Overload version of the RZipFileMemberReaderStream read method.
1.50 + On return, contains the data read from the stream buffer.
1.51 +
1.52 + @param aDes The target descriptor for the data read from the stream buffer
1.53 + @param aLength The maximum number of bytes to be read
1.54 + @return KErrNone If all bytes read successfully.
1.55 + @return KErrCorrupt If reading fails.
1.56 + @return KErrEof If end of file is reached.
1.57 + @return ... Any one of the system-wide error codes for other errors.
1.58 + */
1.59 + virtual TInt Read(TDes8& aDes, TInt aLength);
1.60 +
1.61 + /**
1.62 + Overload version of the RZipFileMemberReaderStream readL method.
1.63 + On return, contains the data read from the stream buffer.
1.64 +
1.65 + @param aDes The target descriptor for the data read from the stream buffer
1.66 + @param aLength The maximum number of bytes to be read
1.67 + @leave KErrNone If all bytes read successfully.
1.68 + @leave KErrCorrupt If reading fails.
1.69 + @leave KErrEof If end of file is reached.
1.70 + @leave ... Any one of the system-wide error codes for other errors.
1.71 + */
1.72 + virtual void ReadL(TDes16& aDes, TInt aLength);
1.73 +
1.74 +
1.75 + void Release();
1.76 + void Close();
1.77 +
1.78 +private:
1.79 + RZipFileMemberReaderStream(CZipFile&, TUint32, TUint32, TUint32, TUint32);
1.80 +
1.81 + static RZipFileMemberReaderStream* NewL(CZipFile&, TUint32, TUint32, TUint32, TUint32);
1.82 + void RZipFileMemberReaderStream::ConstructL();
1.83 +
1.84 + virtual TInt Read(void);
1.85 + virtual TInt Read(TByte*, TUint32, TUint32*);
1.86 +
1.87 + TInt GetBytes(TByte*, TUint32, TUint32*);
1.88 + TInt GetCompressedBytes(void);
1.89 + TInt GetStoredBytes(TByte*, TUint32, TUint32*);
1.90 +
1.91 + void ReadL(TDes8&);
1.92 + void ReadL(TDes16&);
1.93 + void ReadL(TDes8&, TChar);
1.94 + void ReadL(TDes16&, TChar);
1.95 + void ReadL(TUint8*, TInt);
1.96 + void ReadL(TUint16*, TInt);
1.97 + void ReadL(RWriteStream&);
1.98 + void ReadL(RWriteStream&, TInt);
1.99 + void ReadL(TInt);
1.100 +
1.101 + TInt8 ReadInt8L();
1.102 + TInt16 ReadInt16L();
1.103 + TInt32 ReadInt32L();
1.104 + TUint8 ReadUint8L();
1.105 + TUint16 ReadUint16L();
1.106 + TUint32 ReadUint32L();
1.107 +
1.108 + TReal32 ReadReal32L() __SOFTFP;
1.109 + TReal64 ReadReal64L() __SOFTFP;
1.110 +
1.111 + void PushL();
1.112 + void Pop();
1.113 + void Attach(MStreamBuf*);
1.114 + void Detach();
1.115 + MStreamBuf* Source();
1.116 +
1.117 +
1.118 +private:
1.119 +
1.120 + enum
1.121 + {
1.122 + kCompressedBytesSize = 1024
1.123 + };
1.124 +
1.125 +private:
1.126 +
1.127 + CZipFile& iZipFile;
1.128 +
1.129 + /** The method for compressing file*/
1.130 + TUint32 iCompressionMethod;
1.131 +
1.132 + z_stream iStream;
1.133 +
1.134 + /** The size of compressed file */
1.135 + TUint32 iCompressedSize;
1.136 +
1.137 + /** The size of uncompressed file */
1.138 + TUint32 iUncompressedSize;
1.139 +
1.140 + TUint32 iFileOffset;
1.141 + TUint32 iOffset;
1.142 + TBool iDone;
1.143 +
1.144 + /** The number of bytes already read in uncompressed bytes*/
1.145 + TUint32 iBytesLength;
1.146 +
1.147 + /** To store compressed bytes read*/
1.148 + TByte iCompressedBytes[kCompressedBytesSize];
1.149 +
1.150 + /** Not used in implementation*/
1.151 + TUint32 iCompressedBytesOffset;
1.152 + };
1.153 +
1.154 +
1.155 +#endif /* !_ZIP_FILE_MEMBER_INPUT_STREAM_H_ */
1.156 +