genesis-3d_engine/Engine/foundation/util/win32/win32guid.cc

/****************************************************************************
Copyright (c) 2006, Radon Labs GmbH
Copyright (c) 2011-2013,WebJet Business Division,CYOU
 
http://www.genesis-3d.com.cn

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/

#if WIN32


#include "stdneb.h"
#include "exception/exceptions.h"
#include "util/win32/win32guid.h"

namespace Win32
{
using namespace Util;

//------------------------------------------------------------------------------
/**
*/
void
Win32Guid::operator=(const Win32Guid& rhs)
{
    if (this != &rhs)
    {
        this->uuid = rhs.uuid;
    }
}

//------------------------------------------------------------------------------
/**
*/
void
Win32Guid::operator=(const String& rhs)
{
    n_assert(rhs.IsValid());
    RPC_STATUS result = UuidFromString((RPC_CSTR) rhs.AsCharPtr(), &(this->uuid));
    n_assert(RPC_S_INVALID_STRING_UUID != result);
}

//------------------------------------------------------------------------------
/**
*/
bool
Win32Guid::operator==(const Win32Guid& rhs) const
{
    RPC_STATUS status;
    int result = UuidCompare(const_cast<UUID*>(&this->uuid), const_cast<UUID*>(&rhs.uuid), &status);
    return (0 == result);
}

//------------------------------------------------------------------------------
/**
*/
bool
Win32Guid::operator!=(const Win32Guid& rhs) const
{
    RPC_STATUS status;
    int result = UuidCompare(const_cast<UUID*>(&this->uuid), const_cast<UUID*>(&rhs.uuid), &status);
    return (0 != result);
}

//------------------------------------------------------------------------------
/**
*/
bool
Win32Guid::operator<(const Win32Guid& rhs) const
{
    RPC_STATUS status;
    int result = UuidCompare(const_cast<UUID*>(&this->uuid), const_cast<UUID*>(&rhs.uuid), &status);
    return (-1 == result);
}

//------------------------------------------------------------------------------
/**
*/
bool
Win32Guid::operator<=(const Win32Guid& rhs) const
{
    RPC_STATUS status;
    int result = UuidCompare(const_cast<UUID*>(&this->uuid), const_cast<UUID*>(&rhs.uuid), &status);
    return ((-1 == result) || (0 == result));
}

//------------------------------------------------------------------------------
/**
*/
bool
Win32Guid::operator>(const Win32Guid& rhs) const
{
    RPC_STATUS status;
    int result = UuidCompare(const_cast<UUID*>(&this->uuid), const_cast<UUID*>(&rhs.uuid), &status);
    return (1 == result);
}

//------------------------------------------------------------------------------
/**
*/
bool
Win32Guid::operator>=(const Win32Guid& rhs) const
{
    RPC_STATUS status;
    int result = UuidCompare(const_cast<UUID*>(&this->uuid), const_cast<UUID*>(&rhs.uuid), &status);
    return ((1 == result) || (0 == result));
}

//------------------------------------------------------------------------------
/**
*/
bool
Win32Guid::IsValid() const
{
    RPC_STATUS status;
    int result = UuidIsNil(const_cast<UUID*>(&this->uuid), &status);
    return (TRUE != result);
}

//------------------------------------------------------------------------------
/**
*/
void
Win32Guid::Generate()
{
    UuidCreate(&this->uuid);
}

//------------------------------------------------------------------------------
/**
*/
String
Win32Guid::AsString() const
{
    const char* uuidStr;
    UuidToString((UUID*) &this->uuid, (RPC_CSTR*) &uuidStr);
    String result = uuidStr;
    RpcStringFree((RPC_CSTR*)&uuidStr);
    return result;
}

//------------------------------------------------------------------------------
/**
    This method allows read access to the raw binary data of the uuid.
    It returns the number of bytes in the buffer, and a pointer to the
    data.
*/
SizeT
Win32Guid::AsBinary(const unsigned char*& outPtr) const
{
    outPtr = (const unsigned char*) &this->uuid;
    return sizeof(UUID);
}

//------------------------------------------------------------------------------
/**
*/
Win32Guid
Win32Guid::FromString(const Util::String& str)
{
    Win32Guid newGuid;
    RPC_STATUS success = UuidFromString((RPC_CSTR)str.AsCharPtr(), &(newGuid.uuid));
    if(RPC_S_OK != success)
	{
		SYS_EXCEPT(Exceptions::FormatException, 
			STRING_FORMAT("error guid value, %s.", str.AsCharPtr()),
			GET_FUNCTION_NAME()
			);
	}
    return newGuid;
}

//------------------------------------------------------------------------------
/**
    Constructs the guid from binary data, as returned by the AsBinary().
*/
Win32Guid
Win32Guid::FromBinary(const unsigned char* ptr, SizeT numBytes)
{
    n_assert((0 != ptr) && (numBytes == sizeof(UUID)));
    Win32Guid newGuid;
    Memory::Copy(ptr, &(newGuid.uuid), sizeof(UUID));
    return newGuid;
}

//------------------------------------------------------------------------------
/**
    This method returns a hash code for the uuid, compatible with 
    Util::HashTable.
*/
IndexT
Win32Guid::HashCode() const
{
    RPC_STATUS status;
    unsigned short hashCode = UuidHash((UUID*)&this->uuid, &status);
    return (IndexT) hashCode;
}

}; // namespace Win32

#endif