akregator

c4_Bytes Class Reference

#include <mk4.h>

Detailed Description

Generic data buffer, with optional automatic clean up.

These objects are used to pass around untyped data without concern about clean-up. They know whether the bytes need to be de-allocated when these objects go out of scope. Small amounts of data are stored in the object.

Objects of this class are used a lot within Metakit to manipulate its own data items generically. The c4_BytesProp class allows storing binary data explicitly in a file. If such data files must be portable, then the application itself must define a generic format to deal with byte order.

How to store an object in binary form in a row (this is not portable):

    struct MyStruct { ... };
    MyStruct something;
  
    c4_BytesProp pData ("Data");
    c4_Row row;
  
    pData (row) = c4_Bytes (&something, sizeof something);

Definition at line 497 of file mk4.h.


Public Member Functions
	c4_Bytes (const c4_Bytes &)
	c4_Bytes (const void *, int, bool)
	c4_Bytes (const void *, int)
	c4_Bytes ()
const t4_byte *	Contents () const
c4_Bytes &	operator= (const c4_Bytes &)
t4_byte *	SetBuffer (int)
t4_byte *	SetBufferClear (int)
int	Size () const
void	Swap (c4_Bytes &)
	~c4_Bytes ()
Friends
bool	operator!= (const c4_Bytes &, const c4_Bytes &)
bool	operator== (const c4_Bytes &, const c4_Bytes &)

Constructor & Destructor Documentation

c4_Bytes::c4_Bytes ( )

c4_Bytes::c4_Bytes	(	const void *	,
		int
	)

c4_Bytes::c4_Bytes	(	const void *	buf_,
		int	len_,
		bool	copy_
	)

Construct an object with contents, optionally as a copy.

Definition at line 50 of file table.cpp.

c4_Bytes::c4_Bytes ( const c4_Bytes & src_ )

Copy constructor.

Definition at line 58 of file table.cpp.

c4_Bytes::~c4_Bytes ( )

Member Function Documentation

const t4_byte* c4_Bytes::Contents ( ) const

c4_Bytes & c4_Bytes::operator= ( const c4_Bytes & src_ )

Assignment, this may make a private copy of contents.

Definition at line 65 of file table.cpp.

t4_byte * c4_Bytes::SetBuffer ( int length_ )

Define contents as a freshly allocated buffer of given size.

Definition at line 111 of file table.cpp.

t4_byte * c4_Bytes::SetBufferClear ( int length_ )

Allocate a buffer and fills its contents with zero bytes.

Definition at line 128 of file table.cpp.

int c4_Bytes::Size ( ) const

void c4_Bytes::Swap ( c4_Bytes & bytes_ )

Swap the contents and ownership of two byte objects.

Definition at line 81 of file table.cpp.

Friends And Related Function Documentation

bool operator!=	(	const c4_Bytes &	,
		const c4_Bytes &
	)			`[friend]`

bool operator==	(	const c4_Bytes &	a_,
		const c4_Bytes &	b_
	)			`[friend]`

Return true if the contents of both objects are equal.

Definition at line 143 of file table.cpp.

Member Data Documentation

double c4_Bytes::_aligner

Definition at line 501 of file mk4.h.

t4_byte c4_Bytes::_buffer[16]

Definition at line 500 of file mk4.h.

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

akregator

c4_Bytes Class Reference

Detailed Description

Public Member Functions

Friends

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation

Member Data Documentation

akregator

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