pgpmemoryiopriv.h

PGP8.0源码 请认真阅读您的文件包然后写出其具体功能

/*____________________________________________________________________________
	Copyright (C) 2002 PGP Corporation
	All rights reserved.
	
	File IO that uses a FILE * for its implementation

	$Id: pgpMemoryIOPriv.h,v 1.4 2002/08/06 20:10:34 dallen Exp $
____________________________________________________________________________*/

#include "pgpMemoryIO.h"
#include "pgpIOPriv.h"

PGP_BEGIN_C_DECLARATIONS


typedef PGPError	(*PGPMemoryIOReallocateProc)( PGPMemoryIORef ref,
						void **ptr, PGPSize size );

/* the virtual function table for a PGPFileIO */
typedef struct PGPMemoryIOVtbl
{
	PGPIOVtbl					parentVTBL;
	
	PGPMemoryIOReallocateProc	reallocateProc;
} PGPMemoryIOVtbl;


PGPMemoryIOVtbl const *	pgpMemoryIOGetClassVTBL( void );


/* used to initialize */
typedef struct PGPMemoryIOData
{
	PGPBoolean		useFixedBuffer;
	void *			buffer;
	PGPSize			bufferSize;
} PGPMemoryIOData;

struct PGPMemoryIO
{
	PGPIO			parent;
	
	PGPUInt32		memoryIOMagic;
	void *			buffer;
	PGPBoolean		ownsBuffer;
	PGPBoolean		canResize;
	PGPUInt32		bufferSize;
	PGPUInt32		eof;
};
#define kPGPMemoryIOMagic		0x50524f58	/* PROX */



PGP_END_C_DECLARATIONS

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