/*

******************************************************************************

*

*   Copyright (C) 1999-2004, International Business Machines

*   Corporation and others.  All Rights Reserved.

*

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

/*----------------------------------------------------------------------------------

 *

 *  UDataMemory     A class-like struct that serves as a handle to a piece of memory

 *                  that contains some ICU data (resource, converters, whatever.)

 *

 *                  When an application opens ICU data (with udata_open, for example,

 *                  a UDataMemory * is returned.

 *

 *----------------------------------------------------------------------------------*/

#ifndef __UDATAMEM_H__

#define __UDATAMEM_H__

#include "unicode/udata.h"

#include "ucmndata.h"

struct UDataMemory {

    const commonDataFuncs  *vFuncs;      /* Function Pointers for accessing TOC             */

    const DataHeader *pHeader;     /* Header of the memory being described by this    */

                                   /*   UDataMemory object.                           */

    const void       *toc;         /* For common memory, table of contents for        */

                                   /*   the pieces within.                            */

    UBool             heapAllocated;  /* True if this UDataMemory Object is on the    */

                                   /*  heap and thus needs to be deleted when closed. */

    void             *mapAddr;     /* For mapped or allocated memory, the start addr. */

                                   /* Only non-null if a close operation should unmap */

                                   /*  the associated data.                           */

    void             *map;         /* Handle, or other data, OS dependent.            */

                                   /* Only non-null if a close operation should unmap */

                                   /*  the associated data, and additional info       */

                                   /*   beyond the mapAddr is needed to do that.      */

    int32_t           length;      /* Length of the data in bytes; -1 if unknown.     */

};

UDataMemory     *UDataMemory_createNewInstance(UErrorCode *pErr);

void             UDatamemory_assign  (UDataMemory *dest, UDataMemory *source);

void             UDataMemory_init    (UDataMemory *This);

UBool            UDataMemory_isLoaded(UDataMemory *This);

void             UDataMemory_setData (UDataMemory *This, const void *dataAddr);

const DataHeader *UDataMemory_normalizeDataPointer(const void *p);

U_CAPI int32_t U_EXPORT2

udata_getLength(const UDataMemory *pData);

U_CAPI const void * U_EXPORT2

udata_getRawMemory(const UDataMemory *pData);

#endif