output_filter_gzip Class Reference

#include <gzip.h>

Inheritance diagram for output_filter_gzip:

Public Member Functions
virtual	~output_filter_gzip ()
Static Public Member Functions
static pointer	create (const output::pointer &deeper)
Protected Member Functions
long	ftell_inner (void) const
void	write_inner (const void *data, size_t length)
nstring	type_name (void) const
void	end_of_line_inner (void)
Private Member Functions
	output_filter_gzip (const output::pointer &deeper)
void	drop_dead (int err)
void	output_long_le (unsigned long x)
	output_filter_gzip ()
	output_filter_gzip (const output_filter_gzip &)
output_filter_gzip &	operator= (const output_filter_gzip &)
Private Attributes
z_stream	stream
Byte *	outbuf
uLong	crc
long	pos
bool	bol

---

Detailed Description

The output_filter_gzip class is used to represent an output filter which compresses the data before writing it to the deeper output stream.

Definition at line 30 of file gzip.h.

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Constructor & Destructor Documentation

virtual output_filter_gzip::~output_filter_gzip

(

)

[virtual]

The destructor.

output_filter_gzip::output_filter_gzip

(

const output::pointer &

deeper

)

[private]

The constructor. It is private on purpose, use the create class method instead.

Parameters:

deeper

the output stream this filter will write its output to.

output_filter_gzip::output_filter_gzip

(

)

[private]

The default constructor. Do not use.

output_filter_gzip::output_filter_gzip

(

const output_filter_gzip &

)

[private]

The copy constructor. Do not use.

---

Member Function Documentation

static pointer output_filter_gzip::create

(

const output::pointer &

deeper

)

[static]

The create class method is sued to create new dynamically allocated instances of this class.

Parameters:

deeper

the output stream this filter will write its output to.

void output_filter_gzip::drop_dead

(

int

err

)

[private]

The drop_dead method is used to report a fatal error from the gzip engine.

void output_filter_gzip::end_of_line_inner

(

void

)

[protected, virtual]

The end_of_line_inner method is used to ensure that the current output position is at the beginning of a line, without taking the buffering into account.

Reimplemented from output_filter.

long output_filter_gzip::ftell_inner

(

void

)

const [protected, virtual]

The ftell_inner method is used to determine the current file position, without taking the buffering into account.

Reimplemented from output_filter.

output_filter_gzip& output_filter_gzip::operator=

(

const output_filter_gzip &

)

[private]

The assignment operator. Do not use.

void output_filter_gzip::output_long_le

(

unsigned long

x

)

[private]

nstring output_filter_gzip::type_name

(

void

)

const [protected, virtual]

The type_name method is used to determine the name of this output device or file or type.

Reimplemented from output_filter.

void output_filter_gzip::write_inner	(	const void *	data,
		size_t	length
	)		[protected, virtual]

The write_inner method is used write data to the output, without taking the buffering into account.

Reimplemented from output_filter.

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Field Documentation

bool output_filter_gzip::bol [private]

The bol instance variable is used to remember whether or not the output is positioned at the beginning of a lone.

Definition at line 99 of file gzip.h.

uLong output_filter_gzip::crc [private]

The crc instance variable is used to remember the crc32 of the uncompressed data.

Definition at line 87 of file gzip.h.

Byte* output_filter_gzip::outbuf [private]

The outbuf instance variable is used to remember the buffered output data.

Definition at line 81 of file gzip.h.

long output_filter_gzip::pos [private]

The pos instance variable is used to remember the current output position.

Definition at line 93 of file gzip.h.

z_stream output_filter_gzip::stream [private]

The stream instance variable is used to remember somthign that the gzip code wants to remember. It is opaque to us.

Definition at line 75 of file gzip.h.

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

• /home/archives/aegis/branch.4/branch.25/delta28933.505/libaegis/output/filter/gzip.h