michael@0: /*
michael@0: ******************************************************************************
michael@0: *
michael@0: *   Copyright (C) 1999-2010, International Business Machines
michael@0: *   Corporation and others.  All Rights Reserved.
michael@0: *
michael@0: ******************************************************************************/
michael@0: 
michael@0: 
michael@0: /*----------------------------------------------------------------------------------
michael@0:  *
michael@0:  *  UDataMemory     A class-like struct that serves as a handle to a piece of memory
michael@0:  *                  that contains some ICU data (resource, converters, whatever.)
michael@0:  *
michael@0:  *                  When an application opens ICU data (with udata_open, for example,
michael@0:  *                  a UDataMemory * is returned.
michael@0:  *
michael@0:  *----------------------------------------------------------------------------------*/
michael@0: #ifndef __UDATAMEM_H__
michael@0: #define __UDATAMEM_H__
michael@0: 
michael@0: #include "unicode/udata.h"
michael@0: #include "ucmndata.h"
michael@0: 
michael@0: struct UDataMemory {
michael@0:     const commonDataFuncs  *vFuncs;      /* Function Pointers for accessing TOC             */
michael@0: 
michael@0:     const DataHeader *pHeader;     /* Header of the memory being described by this    */
michael@0:                                    /*   UDataMemory object.                           */
michael@0:     const void       *toc;         /* For common memory, table of contents for        */
michael@0:                                    /*   the pieces within.                            */
michael@0:     UBool             heapAllocated;  /* True if this UDataMemory Object is on the    */
michael@0:                                    /*  heap and thus needs to be deleted when closed. */
michael@0: 
michael@0:     void             *mapAddr;     /* For mapped or allocated memory, the start addr. */
michael@0:                                    /* Only non-null if a close operation should unmap */
michael@0:                                    /*  the associated data.                           */
michael@0:     void             *map;         /* Handle, or other data, OS dependent.            */
michael@0:                                    /* Only non-null if a close operation should unmap */
michael@0:                                    /*  the associated data, and additional info       */
michael@0:                                    /*   beyond the mapAddr is needed to do that.      */
michael@0:     int32_t           length;      /* Length of the data in bytes; -1 if unknown.     */
michael@0: };
michael@0: 
michael@0: U_CFUNC UDataMemory *UDataMemory_createNewInstance(UErrorCode *pErr);
michael@0: U_CFUNC void         UDatamemory_assign  (UDataMemory *dest, UDataMemory *source);
michael@0: U_CFUNC void         UDataMemory_init    (UDataMemory *This);
michael@0: U_CFUNC UBool        UDataMemory_isLoaded(const UDataMemory *This);
michael@0: U_CFUNC void         UDataMemory_setData (UDataMemory *This, const void *dataAddr);
michael@0: 
michael@0: U_CFUNC const DataHeader *UDataMemory_normalizeDataPointer(const void *p);
michael@0: 
michael@0: U_CAPI int32_t U_EXPORT2
michael@0: udata_getLength(const UDataMemory *pData);
michael@0: 
michael@0: U_CAPI const void * U_EXPORT2
michael@0: udata_getRawMemory(const UDataMemory *pData);
michael@0: 
michael@0: #endif