FStreamSizeHolder Declaration remembers size of stream chunk for backward compatibility. More...

#include "fstreamer.h"

Public Member Functions
	FStreamSizeHolder (FStreamer &s)

void	beginWrite ()
	remembers position and writes 0

int32	endWrite ()
	writes and returns size (since the start marker)

int32	beginRead ()
	returns size

void	endRead ()
	jump to end of chunk

Protected Attributes
FStreamer &	stream

int64	sizePos

Detailed Description

FStreamSizeHolder Declaration remembers size of stream chunk for backward compatibility.

Example:

externalize (a)
{
    FStreamSizeHolder sizeHolder;
    sizeHolder.beginWrite ();   // sets start mark, writes dummy size
    a << ....
    sizeHolder.endWrite ();     // jumps to start mark, updates size, jumps back here
}
 
internalize (a)
{
    FStreamSizeHolder sizeHolder;
    sizeHolder.beginRead ();    // reads size, mark
    a >> ....
    sizeHolder.endRead ();      // jumps forward if new version has larger size
}

Definition at line 199 of file fstreamer.h.

Constructor & Destructor Documentation

◆ FStreamSizeHolder()

Steinberg::FStreamSizeHolder::FStreamSizeHolder ( FStreamer & s )

Definition at line 93 of file fstreamer.cpp.

Member Function Documentation

◆ beginRead()

int32 Steinberg::FStreamSizeHolder::beginRead ( )

returns size

Definition at line 121 of file fstreamer.cpp.

◆ beginWrite()

void Steinberg::FStreamSizeHolder::beginWrite ( )

remembers position and writes 0

Definition at line 98 of file fstreamer.cpp.

◆ endRead()

void Steinberg::FStreamSizeHolder::endRead ( )

jump to end of chunk

Definition at line 131 of file fstreamer.cpp.

◆ endWrite()

int32 Steinberg::FStreamSizeHolder::endWrite ( )

writes and returns size (since the start marker)

Definition at line 105 of file fstreamer.cpp.

Member Data Documentation

◆ sizePos

int64 Steinberg::FStreamSizeHolder::sizePos

protected

Definition at line 211 of file fstreamer.h.

◆ stream

FStreamer& Steinberg::FStreamSizeHolder::stream