IBStream Class Reference

Base class for streams. More...

#include <ibstream.h>

Inheritance diagram for IBStream:

Public Types
enum	IStreamSeekMode { kIBSeekSet = 0 , kIBSeekCur , kIBSeekEnd }

Public Member Functions
virtual tresult	read (void *buffer, int32 numBytes, int32 *numBytesRead=nullptr)=0
	Reads binary data from stream. More...
virtual tresult	write (void *buffer, int32 numBytes, int32 *numBytesWritten=nullptr)=0
	Writes binary data to stream. More...
virtual tresult	seek (int64 pos, int32 mode, int64 *result=nullptr)=0
	Sets stream read-write position. More...
virtual tresult	tell (int64 *pos)=0
	Gets current stream read-write position. More...
Public Member Functions inherited from FUnknown
virtual tresult	queryInterface (const TUID _iid, void **obj)=0
	Query for a pointer to the specified interface. More...
virtual uint32	addRef ()=0
	Adds a reference and returns the new reference count. More...
virtual uint32	release ()=0
	Releases a reference and returns the new reference count. More...

Static Public Attributes
static const FUID	iid
Static Public Attributes inherited from FUnknown
static const FUID	iid

Detailed Description

Base class for streams.

• read/write binary data from/to stream
• get/set stream read-write position (read and write position is the same)

Member Enumeration Documentation

IStreamSeekMode

enum IStreamSeekMode

Enumerator
kIBSeekSet	set absolute seek position
kIBSeekCur	set seek position relative to current position
kIBSeekEnd	set seek position relative to stream end

Member Function Documentation

read()

virtual tresult read ( void *  buffer, int32  numBytes, int32 *  numBytesRead = nullptr  )

pure virtual

Reads binary data from stream.

Parameters

buffer	: destination buffer
numBytes	: amount of bytes to be read
numBytesRead	: result - how many bytes have been read from stream (set to 0 if this is of no interest)

write()

virtual tresult write ( void *  buffer, int32  numBytes, int32 *  numBytesWritten = nullptr  )

pure virtual

Writes binary data to stream.

Parameters

buffer	: source buffer
numBytes	: amount of bytes to write
numBytesWritten	: result - how many bytes have been written to stream (set to 0 if this is of no interest)

seek()

virtual tresult seek ( int64  pos, int32  mode, int64 *  result = nullptr  )

pure virtual

Sets stream read-write position.

Parameters

pos	: new stream position (dependent on mode)
mode	: value of enum IStreamSeekMode
result	: new seek position (set to 0 if this is of no interest)

tell()

virtual tresult tell ( int64 *  pos )

pure virtual

Gets current stream read-write position.

Parameters

pos	: is assigned the current position if function succeeds

Member Data Documentation

iid

const FUID iid

static