A buffer is used to read/write raw data buffers from/on files. More...

#include <Buffer.h>

Inheritance diagram for Gws::Buffer:

Public Types
enum	EStatus { kBad = BIT(1), kGood = BIT(2), kEoB = BIT(3), kFail = BIT(4), kCorrupt = BIT(5) }

Public Member Functions
	Buffer (UInt_t s=32 *KBYTE)
	Default size for a Buffer is 32 KBYTE. More...

virtual Bool_t	Expand (UInt_t)
	Expand the actual size of the buffer. More...

UInt_t	FreeSize () const
	it returns the number of free bytes to the end More...

Char_t *	GetBuffer ()
	Pointer to the underlying array of chars. More...

bool	IsBytes (Memory::EEndian) const

bool	IsStatus (Buffer::EStatus)

UInt_t	Offset () const
	it returns the current position in the buffer More...

virtual Buffer &	operator<< (Char_t)

virtual Buffer &	operator<< (UChar_t)

virtual Buffer &	operator<< (Short_t)

virtual Buffer &	operator<< (UShort_t)

virtual Buffer &	operator<< (Int_t)

virtual Buffer &	operator<< (UInt_t)

virtual Buffer &	operator<< (Float_t)

virtual Buffer &	operator<< (Double_t)

virtual Buffer &	operator>> (Char_t &)

virtual Buffer &	operator>> (UChar_t &)

virtual Buffer &	operator>> (Short_t &)

virtual Buffer &	operator>> (UShort_t &)

virtual Buffer &	operator>> (Int_t &)

virtual Buffer &	operator>> (UInt_t &)

virtual Buffer &	operator>> (Float_t &)

virtual Buffer &	operator>> (Double_t &)

virtual void	Reset ()
	Reset means set all elements to 0 and the current position is 0. More...

virtual void	Reset (UInt_t)

void	SetBytes (Memory::EEndian)

UInt_t	SetOffset (UInt_t off=0)
	change the current position. More...

void	SetStatus (Buffer::EStatus)

UInt_t	Size () const
	it returns the maximum number of bytes in this buffer More...

virtual	~Buffer ()

Static Public Member Functions
static Buffer *	New (Memory::EEndian e, UInt_t s=32 *KBYTE)
	copy n bytes from one buffer to another one More...

Protected Types
enum	EEndian { kLittle = 0, kBig = 1 }
	The adjectives big-endian and little-endian refer to which bytes are most significant in multi-byte data types and describe the order in which a sequence of bytes is stored in a computer’s memory. More...

Protected Member Functions
void	DoAlloc (UInt_t)

TSystem *	SystemROOT ()

Static Protected Member Functions
static void	Copy (const Char_t from, Char_t to, Int_t size)
	copy the content from -> to More...

static void	Delete (Char_t *p)

static void	Delete (Short_t *p)

static void	Delete (Int_t *p)

static void	Delete (UChar_t *p)

static void	Delete (UShort_t *p)

static void	Delete (UInt_t *p)

static void	Delete (Float_t *p)

static void	Delete (Double_t *p)

static Int_t	GetEndian ()

static bool	IsBytes (Memory::EEndian e)
	check out the endian type of the running system More...

static Char_t *	New (Char_t p, Int_t nb=32 KBYTE)
	To allocate a buffer that is set to 0 (some compilers don't do it) More...

static Short_t *	New (Short_t p, Int_t nb=32 KBYTE)

static Int_t *	New (Int_t p, Int_t nb=32 KBYTE)

static UChar_t *	New (UChar_t p, Int_t nb=32 KBYTE)

static UShort_t *	New (UShort_t p, Int_t nb=32 KBYTE)

static UInt_t *	New (UInt_t p, Int_t nb=32 KBYTE)

static Float_t *	New (Float_t p, Int_t nb=32 KBYTE)

static Double_t *	New (Double_t p, Int_t nb=32 KBYTE)

static Char_t *	New (Char_t p, UInt_t nb=32 KBYTE)

static Short_t *	New (Short_t p, UInt_t nb=32 KBYTE)

static Int_t *	New (Int_t p, UInt_t nb=32 KBYTE)

static Long_t *	New (Long_t p, UInt_t nb=32 KBYTE)

static UChar_t *	New (UChar_t p, UInt_t nb=32 KBYTE)

static UShort_t *	New (UShort_t p, UInt_t nb=32 KBYTE)

static UInt_t *	New (UInt_t p, UInt_t nb=32 KBYTE)

static Float_t *	New (Float_t p, UInt_t nb=32 KBYTE)

static Double_t *	New (Double_t p, UInt_t nb=32 KBYTE)

static void	Swap (Short_t, Char_t *)
	the Swap members More...

static void	Swap (UShort_t, Char_t *)

static void	Swap (Int_t, Char_t *)

static void	Swap (UInt_t, Char_t *)

static void	Swap (Float_t, Char_t *)

static void	Swap (Double_t, Char_t *)

static void	Swap (Char_t *, Short_t &)

static void	Swap (Char_t *, UShort_t &)

static void	Swap (Char_t *, Int_t &)

static void	Swap (Char_t *, UInt_t &)

static void	Swap (Char_t *, Float_t &)

static void	Swap (Char_t *, Double_t &)

static void	Zero (Char_t *p, Int_t nb)
	fast initialization of the buffer at 0 More...

static void	Zero (Short_t *p, Int_t nb)

static void	Zero (Int_t *p, Int_t nb)

static void	Zero (UChar_t *p, Int_t nb)

static void	Zero (UShort_t *p, Int_t nb)

static void	Zero (UInt_t *p, Int_t nb)

static void	Zero (Float_t *p, Int_t nb)

static void	Zero (Double_t *p, Int_t nb)

static void	Zero (Char_t *p, UInt_t nb)

static void	Zero (Short_t *p, UInt_t nb)

static void	Zero (Int_t *p, UInt_t nb)

static void	Zero (UChar_t *p, UInt_t nb)

static void	Zero (UShort_t *p, UInt_t nb)

static void	Zero (UInt_t *p, UInt_t nb)

static void	Zero (Float_t *p, UInt_t nb)

static void	Zero (Double_t *p, UInt_t nb)

Protected Attributes
Char_t *	fBuffer

UInt_t	fCurrent

Int_t	fEndian

UInt_t	fSize

Int_t	fStatus

Detailed Description

A buffer is used to read/write raw data buffers from/on files.

It is an array of fSize bytes with a cursor on it. Stream operators are defined for some basic types.
By default, the size of the buffer is 32 kBYTE. For some reason, the allocation could failed in the constructor. In this case the kBad flags is set. Be sure your buffer is good after creating it before any readings/writings.

Author: Olivier Stezowski

Definition at line 43 of file Buffer.h.

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

Public Types

Public Member Functions

Static Public Member Functions

Protected Types

Protected Member Functions

Static Protected Member Functions

Protected Attributes

Detailed Description