/** 

 * XML Security Library (http://www.aleksey.com/xmlsec).

 *

 * Memory buffer.

 *

 * This is free software; see Copyright file in the source

 * distribution for preciese wording.

 * 

 * Copyright (C) 2002-2003 Aleksey Sanin <aleksey@aleksey.com>

 * Portion Copyright © 2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. 

 */

#ifndef __XMLSEC_BUFFER_H__

#define __XMLSEC_BUFFER_H__    

#ifdef __cplusplus

extern "C" {

#endif /* __cplusplus */ 

#include <libxml2_tree.h>

#include "xmlsec_config.h"

#include "xmlsec_xmlsec.h"

typedef struct _xmlSecBuffer					xmlSecBuffer, 

								*xmlSecBufferPtr;

/** 

 * xmlSecAllocMode:

 * @xmlSecAllocModeExact: 	the memory allocation mode that minimizes total 

 *				allocated memory size.

 * @xmlSecAllocModeDouble:	the memory allocation mode that tries to minimize

 *				the number of malloc calls.

 *

 * The memory allocation mode (used by @xmlSecBuffer and @xmlSecList).

 */

typedef enum {

    xmlSecAllocModeExact = 0,

    xmlSecAllocModeDouble

} xmlSecAllocMode;

/*****************************************************************************

 *

 * xmlSecBuffer

 *

 ****************************************************************************/

/** 

 * xmlSecBuffer:

 * @data: the pointer to buffer data.

 * @size: the current data size.

 * @maxSize: the max data size (allocated buffer size).

 * @allocMode: the buffer memory allocation mode.

 *

 * Binary data buffer.

 */

struct _xmlSecBuffer {

    xmlSecByte* 	data;

    xmlSecSize 		size;

    xmlSecSize		maxSize;

    xmlSecAllocMode 	allocMode;

};

XMLSEC_EXPORT void		xmlSecBufferSetDefaultAllocMode	(xmlSecAllocMode defAllocMode,

								 xmlSecSize defInitialSize);

XMLSEC_EXPORT xmlSecBufferPtr	xmlSecBufferCreate		(xmlSecSize size);

XMLSEC_EXPORT void		xmlSecBufferDestroy		(xmlSecBufferPtr buf);

XMLSEC_EXPORT int		xmlSecBufferInitialize		(xmlSecBufferPtr buf,

								 xmlSecSize size);

XMLSEC_EXPORT void		xmlSecBufferFinalize		(xmlSecBufferPtr buf);

XMLSEC_EXPORT xmlSecByte*	xmlSecBufferGetData		(xmlSecBufferPtr buf);

XMLSEC_EXPORT int		xmlSecBufferSetData		(xmlSecBufferPtr buf,

								 const xmlSecByte* data,

								 xmlSecSize size);

XMLSEC_EXPORT xmlSecSize	xmlSecBufferGetSize		(xmlSecBufferPtr buf);

XMLSEC_EXPORT int		xmlSecBufferSetSize		(xmlSecBufferPtr buf,

								 xmlSecSize size);

XMLSEC_EXPORT xmlSecSize	xmlSecBufferGetMaxSize		(xmlSecBufferPtr buf);

XMLSEC_EXPORT int		xmlSecBufferSetMaxSize		(xmlSecBufferPtr buf,

								 xmlSecSize size);

XMLSEC_EXPORT void		xmlSecBufferEmpty		(xmlSecBufferPtr buf);

XMLSEC_EXPORT int		xmlSecBufferAppend		(xmlSecBufferPtr buf,

								 const xmlSecByte* data,

								 xmlSecSize size);

XMLSEC_EXPORT int		xmlSecBufferPrepend		(xmlSecBufferPtr buf,

								 const xmlSecByte* data,

								 xmlSecSize size);

XMLSEC_EXPORT int		xmlSecBufferRemoveHead		(xmlSecBufferPtr buf,

								 xmlSecSize size);

XMLSEC_EXPORT int		xmlSecBufferRemoveTail		(xmlSecBufferPtr buf,

								 xmlSecSize size);

XMLSEC_EXPORT int		xmlSecBufferReadFile		(xmlSecBufferPtr buf,

								 const char* filename);

XMLSEC_EXPORT int		xmlSecBufferBase64NodeContentRead(xmlSecBufferPtr buf,

								 xmlNodePtr node);

XMLSEC_EXPORT int		xmlSecBufferBase64NodeContentWrite(xmlSecBufferPtr buf,

								 xmlNodePtr node,

								 int columns);

XMLSEC_EXPORT xmlOutputBufferPtr xmlSecBufferCreateOutputBuffer	(xmlSecBufferPtr buf);

#ifdef __cplusplus

}

#endif /* __cplusplus */

#endif /* __XMLSEC_BUFFER_H__ */