chxuuid.h
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上传日期:2007-06-06
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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #ifndef __CHXUUID_
- #define __CHXUUID_
- //#include "hxtypes.h"
- //#include "hxrand.h"
- class CMultiplePrimeRandom;
- #define MACHINEID_SIZE 6
- typedef struct tag_uuid_tt
- {
- ULONG32 time_low;
- UINT16 time_mid;
- UINT16 time_hi_and_version;
- UCHAR clock_seq_hi_and_reserved;
- UCHAR clock_seq_low;
- UCHAR node[MACHINEID_SIZE];
- } uuid_tt, *uuid_p_t;
- typedef struct tag_uuid_ttime_t
- {
- ULONG32 lo;
- ULONG32 hi;
- } uuid_ttime_t, *uuid_ttime_p_t;
- typedef struct tag_unsigned64_t
- {
- ULONG32 lo;
- ULONG32 hi;
- } unsigned64_t, *unsigned64_p_t;
- /*
- * the number of elements returned by sscanf() when converting
- * string formatted uuid's to binary
- */
- #define UUID_ELEMENTS_NUM 11
- /*
- * local defines used in uuid bit-diddling
- */
- #define HI_WORD(w) ((w) >> 16)
- #define RAND_MASK 0x3fff /* same as CLOCK_SEQ_LAST */
- #define TIME_MID_MASK 0x0000ffff
- #define TIME_HIGH_MASK 0x0fff0000
- #define TIME_HIGH_SHIFT_COUNT 16
- #define MAX_TIME_ADJUST 0x7fff
- #define CLOCK_SEQ_LOW_MASK 0xff
- #define CLOCK_SEQ_HIGH_MASK 0x3f00
- #define CLOCK_SEQ_HIGH_SHIFT_COUNT 8
- #define CLOCK_SEQ_FIRST 1
- #define CLOCK_SEQ_LAST 0x3fff /* same as RAND_MASK */
- #define CLOCK_SEQ_BUMP(seq) ((*seq) = ((*seq) + 1) & CLOCK_SEQ_LAST)
- #define UUID_VERSION_BITS (1 << 12)
- #define UUID_RESERVED_BITS 0xE0
- #define IS_OLD_UUID(uuid) (((uuid)->clock_seq_hi_and_reserved & 0xc0) != 0x80)
- /*
- * Max size of a uuid string: tttttttt-tttt-cccc-cccc-nnnnnnnnnnnn
- * Note: this includes the implied ' '
- */
- #define UUID_C_UUID_STRING_MAX 37
- class CHXString;
- enum uuid_compval_t
- {
- uuid_e_less_than, uuid_e_equal_to, uuid_e_greater_than
- };
- #ifdef _WIN16
- /************************************************************************
- * int FAR _cdecl wsscanf( LPSTR lpBuffer, LPSTR lpFormat,
- * LPSTR lpParms, ... )
- *
- * Description:
- * Replacement function for sscanf(). Useable in DLLs (all
- * parameters are passed as FAR pointers.
- *
- ************************************************************************/
- int STDMETHODCALLTYPE wsscanf( char* lpBuffer, char* lpFormat, ... );
- #endif /* _WIN16 */
- class CHXuuid
- {
- protected:
- /*
- * declarations used in UTC time calculations
- */
- uuid_ttime_t m_time_now; /* utc time as of last query */
- uuid_ttime_t m_time_last; /* 'saved' value of time_now */
- UINT16 m_time_adjust; /* 'adjustment' to ensure uniqness */
- UINT16 m_clock_seq; /* 'adjustment' for backwards clocks*/
- UCHAR m_machineID[MACHINEID_SIZE];
- CMultiplePrimeRandom* m_pRand;
- void NewClockSeq(UINT16& clock_seq);
- void GetOSTime(uuid_ttime_t * uuid_ttime);
- void GenerateMachineID();
- uuid_compval_t TimeCmp(uuid_ttime_p_t time1, uuid_ttime_p_t time2);
- void UnsignedExtendedMultiply(ULONG32 u,ULONG32 v, unsigned64_t* prodPtr);
- UINT16 TrueRandom();
- public:
- CHXuuid();
- CHXuuid(UCHAR theMachineID[MACHINEID_SIZE]);
- virtual ~CHXuuid();
- UCHAR* GetMachineID() {return m_machineID;}
- HX_RESULT GetUuid(uuid_tt* uuid);
- HX_RESULT GetUuid(uuid_tt* uuid, const UCHAR* pBuffer, UINT32 ulBufferSize);
- static HX_RESULT HXUuidToString(const uuid_tt* uuid, CHXString* uuid_string);
- static HX_RESULT HXUuidFromString(const char* uuid_string, uuid_tt* uuid);
- static BOOL HXIsEqual(uuid_p_t uuid1, uuid_p_t uuid2);
- static HX_RESULT HXPack(UINT8* pBuffer, uuid_p_t uuid);
- static HX_RESULT HXUnpack(uuid_p_t uuid, UINT8* pBuffer);
- };
- #endif /*__CHXUUID_*/