2 ******************************************************************************
4 * Copyright (C) 1999-2004, International Business Machines
5 * Corporation and others. All Rights Reserved.
7 ******************************************************************************/
10 /*----------------------------------------------------------------------------------
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.)
15 * When an application opens ICU data (with udata_open, for example,
16 * a UDataMemory * is returned.
18 *----------------------------------------------------------------------------------*/
19 #ifndef __UDATAMEM_H__
20 #define __UDATAMEM_H__
22 #include "unicode/udata.h"
26 const commonDataFuncs *vFuncs; /* Function Pointers for accessing TOC */
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. */
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. */
45 UDataMemory *UDataMemory_createNewInstance(UErrorCode *pErr);
46 void UDatamemory_assign (UDataMemory *dest, UDataMemory *source);
47 void UDataMemory_init (UDataMemory *This);
48 UBool UDataMemory_isLoaded(UDataMemory *This);
49 void UDataMemory_setData (UDataMemory *This, const void *dataAddr);
52 const DataHeader *UDataMemory_normalizeDataPointer(const void *p);
54 U_CAPI int32_t U_EXPORT2
55 udata_getLength(const UDataMemory *pData);
57 U_CAPI const void * U_EXPORT2
58 udata_getRawMemory(const UDataMemory *pData);