1/*
2******************************************************************************
3*
4*   Copyright (C) 1999-2010, International Business Machines
5*   Corporation and others.  All Rights Reserved.
6*
7******************************************************************************/
8
9
10/*----------------------------------------------------------------------------------
11 *
12 *  UDataMemory     A class-like struct that serves as a handle to a piece of memory
13 *                  that contains some ICU data (resource, converters, whatever.)
14 *
15 *                  When an application opens ICU data (with udata_open, for example,
16 *                  a UDataMemory * is returned.
17 *
18 *----------------------------------------------------------------------------------*/
19#ifndef __UDATAMEM_H__
20#define __UDATAMEM_H__
21
22#include "unicode/udata.h"
23#include "ucmndata.h"
24
25struct UDataMemory {
26    const commonDataFuncs  *vFuncs;      /* Function Pointers for accessing TOC             */
27
28    const DataHeader *pHeader;     /* Header of the memory being described by this    */
29                                   /*   UDataMemory object.                           */
30    const void       *toc;         /* For common memory, table of contents for        */
31                                   /*   the pieces within.                            */
32    UBool             heapAllocated;  /* True if this UDataMemory Object is on the    */
33                                   /*  heap and thus needs to be deleted when closed. */
34
35    void             *mapAddr;     /* For mapped or allocated memory, the start addr. */
36                                   /* Only non-null if a close operation should unmap */
37                                   /*  the associated data.                           */
38    void             *map;         /* Handle, or other data, OS dependent.            */
39                                   /* Only non-null if a close operation should unmap */
40                                   /*  the associated data, and additional info       */
41                                   /*   beyond the mapAddr is needed to do that.      */
42    int32_t           length;      /* Length of the data in bytes; -1 if unknown.     */
43};
44
45U_CFUNC UDataMemory *UDataMemory_createNewInstance(UErrorCode *pErr);
46U_CFUNC void         UDatamemory_assign  (UDataMemory *dest, UDataMemory *source);
47U_CFUNC void         UDataMemory_init    (UDataMemory *This);
48U_CFUNC UBool        UDataMemory_isLoaded(const UDataMemory *This);
49U_CFUNC void         UDataMemory_setData (UDataMemory *This, const void *dataAddr);
50
51U_CFUNC const DataHeader *UDataMemory_normalizeDataPointer(const void *p);
52
53U_CAPI int32_t U_EXPORT2
54udata_getLength(const UDataMemory *pData);
55
56U_CAPI const void * U_EXPORT2
57udata_getRawMemory(const UDataMemory *pData);
58
59#endif
60