Streambuffer reading or writing gzip files. More...

#include <GzStream.h>

Inheritance diagram for zypp::gzstream_detail::fgzstreambuf:

Public Member Functions
	fgzstreambuf (unsigned bufferSize_r=512)

virtual	~fgzstreambuf ()

bool	isOpen () const

bool	inReadMode () const

bool	inWriteMode () const

fgzstreambuf *	open (const char *name_r, std::ios_base::openmode mode_r=std::ios_base::in)

fgzstreambuf *	close ()

pos_type	compressed_tell () const
	Tell the file position in the compressed file. More...

ZlibError	zError () const
	The last error returned fron zlib. More...

Protected Member Functions
virtual int	sync ()

virtual int_type	overflow (int_type c=traits_type::eof())

virtual int_type	underflow ()

virtual pos_type	seekoff (off_type off_r, std::ios_base::seekdir way_r, std::ios_base::openmode)

virtual pos_type	seekpos (pos_type pos_r, std::ios_base::openmode)

Private Types
typedef std::vector< char >	buffer_type

Private Member Functions
void	setZError ()

std::streamsize	zReadTo (char *buffer_r, std::streamsize maxcount_r)

bool	zWriteFrom (const char *buffer_r, std::streamsize count_r)

pos_type	zSeekTo (off_type off_r, std::ios_base::seekdir way_r)

pos_type	zTell ()

pos_type	seekTo (off_type off_r, std::ios_base::seekdir way_r)

Private Attributes
int	_fd
	file descriptor of the compressed file More...

gzFile	_file

std::ios_base::openmode	_mode

buffer_type	_buffer

ZlibError	_error

Detailed Description

Streambuffer reading or writing gzip files.

Read and write mode are mutual exclusive. Seek is supported, but zlib restrictions appy (only forward seek in write mode; backward seek in read mode might be expensive).Putback is not supported.

Reading plain (no gziped) files is possible as well.

This streambuf is used in ifgzstream and ofgzstream.

Definition at line 86 of file GzStream.h.

Member Typedef Documentation

typedef std::vector<char> zypp::gzstream_detail::fgzstreambuf::buffer_type

private

Definition at line 151 of file GzStream.h.

Constructor & Destructor Documentation

zypp::gzstream_detail::fgzstreambuf::fgzstreambuf ( unsigned bufferSize_r = 512 )

inline

Definition at line 90 of file GzStream.h.

virtual zypp::gzstream_detail::fgzstreambuf::~fgzstreambuf ( )

inlinevirtual

Definition at line 98 of file GzStream.h.

Member Function Documentation

bool zypp::gzstream_detail::fgzstreambuf::isOpen ( ) const

inline

Definition at line 102 of file GzStream.h.

bool zypp::gzstream_detail::fgzstreambuf::inReadMode ( ) const

inline

Definition at line 106 of file GzStream.h.

bool zypp::gzstream_detail::fgzstreambuf::inWriteMode ( ) const

inline

Definition at line 110 of file GzStream.h.

fgzstreambuf * zypp::gzstream_detail::fgzstreambuf::open	(	const char *	name_r,
		std::ios_base::openmode	mode_r = `std::ios_base::in`
	)

Definition at line 74 of file GzStream.cc.

fgzstreambuf * zypp::gzstream_detail::fgzstreambuf::close ( )

Definition at line 120 of file GzStream.cc.

fgzstreambuf::pos_type zypp::gzstream_detail::fgzstreambuf::compressed_tell ( ) const

Tell the file position in the compressed file.

Analogous to tell(2), complementary to gztell.

Definition at line 352 of file GzStream.cc.

ZlibError zypp::gzstream_detail::fgzstreambuf::zError ( ) const

inline

The last error returned fron zlib.

Definition at line 127 of file GzStream.h.

int zypp::gzstream_detail::fgzstreambuf::sync ( )

protectedvirtual

Definition at line 156 of file GzStream.cc.

fgzstreambuf::int_type zypp::gzstream_detail::fgzstreambuf::overflow ( int_type c = traits_type::eof() )

protectedvirtual

Definition at line 173 of file GzStream.cc.

fgzstreambuf::int_type zypp::gzstream_detail::fgzstreambuf::underflow ( )

protectedvirtual

Definition at line 202 of file GzStream.cc.

virtual pos_type zypp::gzstream_detail::fgzstreambuf::seekoff	(	off_type	off_r,
		std::ios_base::seekdir	way_r,
		std::ios_base::openmode
	)

inlineprotectedvirtual

Definition at line 142 of file GzStream.h.

virtual pos_type zypp::gzstream_detail::fgzstreambuf::seekpos	(	pos_type	pos_r,
		std::ios_base::openmode
	)

inlineprotectedvirtual

Definition at line 146 of file GzStream.h.

void zypp::gzstream_detail::fgzstreambuf::setZError ( )

inlineprivate

Definition at line 167 of file GzStream.h.

std::streamsize zypp::gzstream_detail::fgzstreambuf::zReadTo	(	char *	buffer_r,
		std::streamsize	maxcount_r
	)

private

Definition at line 232 of file GzStream.cc.

bool zypp::gzstream_detail::fgzstreambuf::zWriteFrom	(	const char *	buffer_r,
		std::streamsize	count_r
	)

private

Definition at line 246 of file GzStream.cc.

fgzstreambuf::pos_type zypp::gzstream_detail::fgzstreambuf::zSeekTo	(	off_type	off_r,
		std::ios_base::seekdir	way_r
	)

private

Definition at line 263 of file GzStream.cc.

fgzstreambuf::pos_type zypp::gzstream_detail::fgzstreambuf::zTell ( )

private

Definition at line 277 of file GzStream.cc.

fgzstreambuf::pos_type zypp::gzstream_detail::fgzstreambuf::seekTo	(	off_type	off_r,
		std::ios_base::seekdir	way_r
	)

private

Definition at line 291 of file GzStream.cc.

Member Data Documentation

int zypp::gzstream_detail::fgzstreambuf::_fd

private

file descriptor of the compressed file

Definition at line 154 of file GzStream.h.

gzFile zypp::gzstream_detail::fgzstreambuf::_file

private

Definition at line 156 of file GzStream.h.

std::ios_base::openmode zypp::gzstream_detail::fgzstreambuf::_mode

private

Definition at line 158 of file GzStream.h.

buffer_type zypp::gzstream_detail::fgzstreambuf::_buffer

private

Definition at line 160 of file GzStream.h.

ZlibError zypp::gzstream_detail::fgzstreambuf::_error

private

Definition at line 162 of file GzStream.h.

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

zypp/base/GzStream.h
zypp/base/GzStream.cc

Public Member Functions

Protected Member Functions

Private Types

Private Member Functions

Private Attributes

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation