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/****************************************************************************
**
** Copyright (C) 1999-2001 NVIDIA Corporation.
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#pragma once
//==============================================================================
// Includes
//==============================================================================
//#include "Qt3DSTime.h"
#include "Qt3DSString.h"
#include "Qt3DSId.h"
#include <stdio.h>
/*
CId has been revamped to use the more robust OS-dependent GUID generator.
Because this utility file is heavily used all over the place,
the best option is to wrap it around CId.
*/
const GUID UNASSIGNED_GUID = { 0, 0, 0, "" };
const GUID SCENE_GUID = {
0xffffffff, 0xffff, 0xffff, {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}
};
//==============================================================================
/**
* less() Compared two GUIDs
*
* A compares two GUIDs
*
* @param <GUID> inGUID1 The GUID to compare to the second
* @param <GUID> inGUID2 The GUID to compare to the first
*
* @return <bool> true if GUID1 and GUID2 are equal, otherwise false.
*/
inline bool lessGUID(const GUID &inValL, const GUID &inValR)
{
return ::memcmp(&inValL, &inValR, sizeof(inValR)) < 0;
}
//==============================================================================
/**
* equal() Compared two GUIDs
*
* A compares two GUIDs
*
* @param <GUID> inGUID1 The GUID to compare to the second
* @param <GUID> inGUID2 The GUID to compare to the first
*
* @return <bool> true if GUID1 and GUID2 are equal, otherwise false.
*/
inline bool equalGUID(const GUID &inValL, const GUID &inValR)
{
return ::memcmp(&inValL, &inValR, sizeof(inValR)) == 0;
}
//==============================================================================
/**
* @class CGUIDCompare
* @brief A class that enacapsulates the compare operator for two GUIDs.
*/
class CGUIDCompare
{
public:
//==============================================================================
/*
* operator() Compared two GUIDs
*
* A compares two GUIDs
*
* @param <GUID> inGUID1 The GUID to compare to the second
* @param <GUID> inGUID2 The GUID to compare to the first
*
* @return <bool> true if GUID1 and GUID2 are equal, otherwise false.
*/
bool operator()(const GUID &inValL, const GUID &inValR) const
{
return lessGUID(inValL, inValR);
}
};
class CGUIDTools
{
public:
//==============================================================================
/**
* Prepeare to generate GUIDs. If this method is not called the GUIDs will
* but evil GUIDs that are the same evertime the program runs.
* @param outGuid Returns the generated GUID
*/
static void Initialize()
{
// Q3DStudio::CTime theTime( true );
//::srand( static_cast<unsigned int>( theTime.GetMilliSecs( ) ) );
}
//==============================================================================
/**
* GenerateGuid
* @note This is not a GUID. Correct creation involves spatial uniqueness and more:
* http://hegel.ittc.ukans.edu/topics/internet/internet-drafts/draft-l/draft-leach-uuids-guids-00.txt
* @param outGuid Returns the generated GUID
*/
static void GenerateGuid(GUID &outGuid)
{
// Debug - non-random GUIDs
/* static long theGuidCount = 1;
GUID theGuid = {0};
theGuid.Data1 = theGuidCount;
++theGuidCount;
outGuid = theGuid;*/
// ::rand is 16 bits, GUID is 128 bits, smear random bits over the whole GUID
// for ( long theSlot = 0; theSlot < sizeof(GUID)/sizeof(short); ++theSlot )
// reinterpret_cast<short*>( &outGuid )[theSlot] = static_cast<short>( ::rand() );
Q3DStudio::CId theID;
theID.Generate();
outGuid = theID.Convert();
}
static GUID FromString(const Q3DStudio::CString &inGuidStr)
{
GUID theGUID = { 0, 0, 0, "" };
// unsigned long theData[8];
// const char* theBuffer = inGuidStr.GetCharStar( );
//
//// All of the %02X formats get scaned into a 32bit long so we have to convert down
///below....
//::sscanf( theBuffer, "{%08x-%04hx-%04hx-%02x%02x-%02x%02x%02x%02x%02x%02x}",
// &theGUID.Data1,
// &theGUID.Data2,
// &theGUID.Data3,
// &theData[0],
// &theData[1],
// &theData[2],
// &theData[3],
// &theData[4],
// &theData[5],
// &theData[6],
// &theData[7]);
//// This is where we convert the 32 values into unsigned chars.
// for ( long theIndex = 0; theIndex < 8; ++theIndex )
// theGUID.Data4[theIndex] = static_cast<unsigned char>( theData[theIndex] );
Q3DStudio::CId theID;
theID.FromString(inGuidStr);
theGUID = theID.Convert();
return theGUID;
}
static Q3DStudio::CString ToString(REFGUID inGuid)
{
Q3DStudio::CString theGuidStr;
// theGuidStr.Format( _LSTR( "{%08X-%04hX-%04hX-%02X%02X-%02X%02X%02X%02X%02X%02X}" ),
// inGuid.Data1,
// inGuid.Data2,
// inGuid.Data3,
// inGuid.Data4[0],
// (unsigned long)
//inGuid.Data4[1],
// (unsigned long)
//inGuid.Data4[2],
// (unsigned long)
//inGuid.Data4[3],
// (unsigned long)
//inGuid.Data4[4],
// (unsigned long)
//inGuid.Data4[5],
// (unsigned long)
//inGuid.Data4[6],
// (unsigned long)
//inGuid.Data4[7] );
Q3DStudio::CId theID(inGuid);
theGuidStr = theID.ToString();
return theGuidStr;
}
};
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