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romkazvo
2023-08-07 19:29:24 +08:00
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////////////////////////////////////////////////////////////////////////////
//
// Crytek Engine Source File.
// Copyright (C), Crytek Studios, 2002.
// -------------------------------------------------------------------------
// File name: guidutil.h
// Version: v1.00
// Created: 20/1/2003 by Timur.
// Compilers: Visual Studio.NET
// Description: Utility functions to work with GUIDs.
// -------------------------------------------------------------------------
// History:
//
////////////////////////////////////////////////////////////////////////////
#ifndef __guidutil_h__
#define __guidutil_h__
#pragma once
struct GuidUtil
{
//! Convert GUID to string in the valid format.
//! The valid format for a GUID is {XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX} where X is a hex digit.
static const char* ToString( REFGUID guid );
//! Convert from guid string in valid format to GUID class.
static GUID FromString( const char* guidString );
static bool IsEmpty( REFGUID guid );
static const GUID NullGuid;
};
/** Used to compare GUID keys.
*/
struct guid_less_predicate
{
bool operator()( REFGUID guid1,REFGUID guid2 ) const
{
return memcmp(&guid1,&guid2,sizeof(GUID)) < 0;
}
};
//////////////////////////////////////////////////////////////////////////
inline bool GuidUtil::IsEmpty( REFGUID guid )
{
return guid == NullGuid;
}
//////////////////////////////////////////////////////////////////////////
inline const char* GuidUtil::ToString( REFGUID guid )
{
static char guidString[64];
//unsigned short Data4 = *((unsigned short*)guid.Data4);
//unsigned long Data5 = *((unsigned long*)&guid.Data4[2]);
//unsigned short Data6 = *((unsigned short*)&guid.Data4[6]);
sprintf( guidString,"{%.8X-%.4X-%.4X-%.2X%.2X-%.2X%.2X%.2X%.2X%.2X%.2X%}",guid.Data1,guid.Data2,guid.Data3, guid.Data4[0],guid.Data4[1],
guid.Data4[2],guid.Data4[3],guid.Data4[4],guid.Data4[5],guid.Data4[6],guid.Data4[7] );
return guidString;
}
//////////////////////////////////////////////////////////////////////////
inline GUID GuidUtil::FromString( const char *guidString )
{
GUID guid;
unsigned int d[8];
memset( &d,0,sizeof(guid) );
guid.Data1 = 0;
guid.Data2 = 0;
guid.Data3 = 0;
sscanf( guidString,"{%8X-%4hX-%4hX-%2X%2X-%2X%2X%2X%2X%2X%2X%}",
&guid.Data1,&guid.Data2,&guid.Data3, &d[0],&d[1],&d[2],&d[3],&d[4],&d[5],&d[6],&d[7] );
guid.Data4[0] = d[0];
guid.Data4[1] = d[1];
guid.Data4[2] = d[2];
guid.Data4[3] = d[3];
guid.Data4[4] = d[4];
guid.Data4[5] = d[5];
guid.Data4[6] = d[6];
guid.Data4[7] = d[7];
return guid;
}
#endif // __guidutil_h__