CZipDecompressor Class Reference
[Compression]

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#include <zlib.hpp>

Inheritance diagram for CZipDecompressor:

[legend]Collaboration diagram for CZipDecompressor:

[legend]List of all members.

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Detailed Description

CZipCompressor -- zlib based decompressor.

Used in CZipStreamCompressor.

See also:

CZipStreamCompressor, CZipCompression, CCompressionProcessor

Definition at line 510 of file zlib.hpp.

Public Member Functions
	CZipDecompressor (int window_bits=kZlibDefaultWbits, TZipFlags flags=0)
	Constructor.
virtual	~CZipDecompressor (void)
	Destructor.
Protected Member Functions
virtual EStatus	Init (void)
virtual EStatus	Process (const char *in_buf, size_t in_len, char *out_buf, size_t out_size, size_t *in_avail, size_t *out_avail)
virtual EStatus	Flush (char *out_buf, size_t out_size, size_t *out_avail)
virtual EStatus	Finish (char *out_buf, size_t out_size, size_t *out_avail)
virtual EStatus	End (void)
Private Attributes
bool	m_NeedCheckHeader
	TRUE if needed to check to file header.
bool	m_IsGZ
	TRUE if data have gzip format.
size_t	m_SkipInput
	Number of bytes to skip from input stream.
string	m_Cache
	Buffer to cache small pieces of data.

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Constructor & Destructor Documentation

CZipDecompressor::CZipDecompressor (  int  window_bits = kZlibDefaultWbits, TZipFlags  flags = 0 )

Constructor. Definition at line 1060 of file zlib.cpp. References CCompression::SetFlags().

CZipDecompressor::~CZipDecompressor (  void   )  [virtual]

Destructor. Definition at line 1068 of file zlib.cpp. References End(), and CCompressionProcessor::IsBusy().

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Member Function Documentation

CCompressionProcessor::EStatus CZipDecompressor::End (  void   )  [protected, virtual]

Implements CCompressionProcessor. Definition at line 1354 of file zlib.cpp. References CCompression::eMode_TransparentRead, ERR_COMPRESS, CCompressionProcessor::eStatus_Error, CCompressionProcessor::eStatus_Success, CZipCompression::FormatErrorMessage(), CCompressionProcessor::GetProcessedSize(), inflateEnd(), CCompression::m_DecompressMode, CCompressionProcessor::SetBusy(), STREAM, and Z_OK. Referenced by ~CZipDecompressor().

CCompressionProcessor::EStatus CZipDecompressor::Finish (  char *  out_buf, size_t  out_size, size_t *  out_avail )  [protected, virtual]

Implements CCompressionProcessor. Definition at line 1335 of file zlib.cpp. References CCompression::eMode_TransparentRead, CCompressionProcessor::eStatus_EndOfData, CCompressionProcessor::eStatus_Success, CCompression::m_DecompressMode, and Process().

CCompressionProcessor::EStatus CZipDecompressor::Flush (  char *  out_buf, size_t  out_size, size_t *  out_avail )  [protected, virtual]

Implements CCompressionProcessor. Definition at line 1324 of file zlib.cpp. References Process().

CCompressionProcessor::EStatus CZipDecompressor::Init (  void   )  [protected, virtual]

Implements CCompressionProcessor. Definition at line 1077 of file zlib.cpp. References ERR_COMPRESS, CCompressionProcessor::eStatus_Error, CCompressionProcessor::eStatus_Success, CZipCompression::FormatErrorMessage(), CCompressionProcessor::GetProcessedSize(), inflateInit2_(), kMaxHeaderSize, m_Cache, m_IsGZ, m_NeedCheckHeader, m_SkipInput, CZipCompression::m_WindowBits, CCompressionProcessor::Reset(), CCompressionProcessor::SetBusy(), CCompression::SetError(), STREAM, Z_OK, zError(), and ZLIB_VERSION.

CCompressionProcessor::EStatus CZipDecompressor::Process (  const char *  in_buf, size_t  in_len, char *  out_buf, size_t  out_size, size_t *  in_avail, size_t *  out_avail )  [protected, virtual]

Implements CCompressionProcessor. Definition at line 1104 of file zlib.cpp. References CCompression::eMode_Decompress, CCompression::eMode_TransparentRead, CCompression::eMode_Unknown, ERR_COMPRESS, CCompressionProcessor::eStatus_Error, CCompressionProcessor::eStatus_Overflow, CCompressionProcessor::eStatus_Success, F_ISSET, CZipCompression::fAllowTransparentRead, CZipCompression::fCheckFileHeader, CZipCompression::FormatErrorMessage(), CCompressionProcessor::GetProcessedSize(), CCompressionProcessor::IncreaseProcessedSize(), kMax_UInt, kMaxHeaderSize, LIMIT_SIZE_PARAM_U, m_Cache, CCompression::m_DecompressMode, m_NeedCheckHeader, m_SkipInput, CCompression::SetError(), and Z_STREAM_ERROR. Referenced by Finish(), and Flush().

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Member Data Documentation

string CZipDecompressor::m_Cache [private]

Buffer to cache small pieces of data. Definition at line 539 of file zlib.hpp. Referenced by Init(), and Process().

bool CZipDecompressor::m_IsGZ [private]

TRUE if data have gzip format. Definition at line 536 of file zlib.hpp. Referenced by Init().

bool CZipDecompressor::m_NeedCheckHeader [private]

TRUE if needed to check to file header. Definition at line 535 of file zlib.hpp. Referenced by Init(), and Process().

size_t CZipDecompressor::m_SkipInput [private]

Number of bytes to skip from input stream. Used to process concatenated .gz files. Definition at line 537 of file zlib.hpp. Referenced by Init(), and Process().

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The documentation for this class was generated from the following files:

• include/util/compress/zlib.hpp
• src/util/compress/zlib.cpp

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