MemoryStream.h

/*********************************************************************** Author: Zihan Chen (vczh) Licensed under https://github.com/vczh-libraries/License ***********************************************************************/

#ifndef VCZH_STREAM_MEMORYSTREAM

#define VCZH_STREAM_MEMORYSTREAM

#include "Interfaces.h"

namespace

{

namespace

stream

{

/// <summary>A readable, peekable, writable and seekable stream that creates on a buffer.</summary>

class

MemoryStream

public

Object

public

virtual

IStream

{

protected

vint

block

;

char

buffer

;

vint

size

;

vint

position

;

vint

capacity

;

void

PrepareSpace

(

vint

totalSpace

);

public

/// <summary>Create a memory stream.</summary>

/// <param name="_block">

/// Size for each allocation.

/// When the allocated buffer is not big enough for writing,

/// the buffer will be rebuilt with an extension of "_block" in bytes.

/// </param>

MemoryStream

(

vint

_block

65536

);

MemoryStream

();

bool

CanRead

()

const

;

bool

CanWrite

()

const

;

bool

CanSeek

()

const

;

bool

CanPeek

()

const

;

bool

IsLimited

()

const

;

bool

IsAvailable

()

const

;

void

();

pos_t

Position

()

const

;

pos_t

Size

()

const

;

void

Seek

(

pos_t

_size

);

void

SeekFromBegin

(

pos_t

_size

);

void

SeekFromEnd

(

pos_t

_size

);

vint

Read

(

void

_buffer

vint

_size

);

vint

Write

(

void

_buffer

vint

_size

);

vint

Peek

(

void

_buffer

vint

_size

);

void

GetInternalBuffer

(); }; } }

#endif