input_tar Class Reference

#include <tar.h>

Inheritance diagram for input_tar:

Public Member Functions
virtual	~input_tar ()
	input_tar (input &deeper)
input	child (nstring &archive_name, bool &executable)
nstring	name ()
off_t	length ()
ssize_t	read_inner (void *data, size_t nbytes)
off_t	ftell_inner ()
Private Member Functions
nstring	read_data_as_string (size_t hsize)
void	padding ()
	input_tar ()
	input_tar (const input_tar &arg)
input_tar &	operator= (const input_tar &arg)
Private Attributes
input	deeper

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Detailed Description

The input_tar class is used to represent a tar archive.

Definition at line 28 of file tar.h.

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Constructor & Destructor Documentation

virtual input_tar::~input_tar

(

)

[virtual]

The destructor.

input_tar::input_tar

(

input &

deeper

)

The constructor.

Parameters:

deeper

the data sourec for this filter.

input_tar::input_tar

(

)

[private]

The default constructor.

input_tar::input_tar

(

const input_tar &

arg

)

[private]

The copy constructor.

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Member Function Documentation

input input_tar::child	(	nstring &	archive_name,
		bool &	executable
	)

The child method is used to obtain the next archive element.

Parameters:

archive_name	Use to return the name of the file in the archive to the caller.
executable	Use to return the executability of the file to the caller.

Returns:

NULL at end of file, or a valid input instance to read the file contents the file contents from.

off_t input_tar::ftell_inner

(

)

[virtual]

The ftell_inner method is used to determine the unbuffered current position within the input.

Implements input_ty.

off_t input_tar::length

(

)

[virtual]

The length method is used to determine the length of the input. May return -1 if the length is unknown.

Implements input_ty.

nstring input_tar::name

(

)

[virtual]

The name method is used to determine the name of the input.

Implements input_ty.

input_tar& input_tar::operator=

(

const input_tar &

arg

)

[private]

The assignment operator.

void input_tar::padding

(

)

[private]

nstring input_tar::read_data_as_string

(

size_t

hsize

)

[private]

ssize_t input_tar::read_inner	(	void *	data,
		size_t	nbytes
	)		[virtual]

The read_inner method is used to read unbuffered data from the given input stream. At most nbytes bytes will be read into data. The number of bytes actually read will be returned. At end-of-file, a value <= 0 will be returned, and data will be unchanged. All file read errors or format errors are fatal, and will cause the method to not return.

Parameters:

data	Where to put the results of the read.
nbytes	The maximum number of bytes to read.

Returns:

The actual number of bytes read, or zero for end-of-file.

Implements input_ty.

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Field Documentation

input input_tar::deeper [private]

The depeer instance variable is used to remember the data source for this filter.

Definition at line 75 of file tar.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/aetar/input/tar.h