mirror of
https://github.com/juce-framework/JUCE.git
synced 2026-01-11 23:54:18 +00:00
142 lines
4 KiB
C++
142 lines
4 KiB
C++
/*
|
|
==============================================================================
|
|
|
|
This file is part of the JUCE library - "Jules' Utility Class Extensions"
|
|
Copyright 2004-11 by Raw Material Software Ltd.
|
|
|
|
------------------------------------------------------------------------------
|
|
|
|
JUCE can be redistributed and/or modified under the terms of the GNU General
|
|
Public License (Version 2), as published by the Free Software Foundation.
|
|
A copy of the license is included in the JUCE distribution, or can be found
|
|
online at www.gnu.org/licenses.
|
|
|
|
JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
|
|
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
|
|
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
|
|
|
|
------------------------------------------------------------------------------
|
|
|
|
To release a closed-source product which uses JUCE, commercial licenses are
|
|
available: visit www.rawmaterialsoftware.com/juce for more information.
|
|
|
|
==============================================================================
|
|
*/
|
|
|
|
#include "juce_StandardHeader.h"
|
|
|
|
BEGIN_JUCE_NAMESPACE
|
|
|
|
#include "juce_Uuid.h"
|
|
#include "../maths/juce_Random.h"
|
|
#include "juce_Time.h"
|
|
#include "../io/network/juce_MACAddress.h"
|
|
#include "../memory/juce_MemoryBlock.h"
|
|
|
|
|
|
//==============================================================================
|
|
Uuid::Uuid()
|
|
{
|
|
// Mix up any available MAC addresses with some time-based pseudo-random numbers
|
|
// to make it very very unlikely that two UUIDs will ever be the same..
|
|
|
|
static int64 macAddresses[2];
|
|
static bool hasCheckedMacAddresses = false;
|
|
|
|
if (! hasCheckedMacAddresses)
|
|
{
|
|
hasCheckedMacAddresses = true;
|
|
|
|
Array<MACAddress> result;
|
|
MACAddress::findAllAddresses (result);
|
|
|
|
for (int i = 0; i < numElementsInArray (macAddresses); ++i)
|
|
macAddresses[i] = result[i].toInt64();
|
|
}
|
|
|
|
value.asInt64[0] = macAddresses[0];
|
|
value.asInt64[1] = macAddresses[1];
|
|
|
|
// We'll use both a local RNG that is re-seeded, plus the shared RNG,
|
|
// whose seed will carry over between calls to this method.
|
|
|
|
Random r (macAddresses[0] ^ macAddresses[1]
|
|
^ Random::getSystemRandom().nextInt64());
|
|
|
|
for (int i = 4; --i >= 0;)
|
|
{
|
|
r.setSeedRandomly(); // calling this repeatedly improves randomness
|
|
value.asInt[i] ^= r.nextInt();
|
|
value.asInt[i] ^= Random::getSystemRandom().nextInt();
|
|
}
|
|
}
|
|
|
|
Uuid::~Uuid() noexcept
|
|
{
|
|
}
|
|
|
|
Uuid::Uuid (const Uuid& other)
|
|
: value (other.value)
|
|
{
|
|
}
|
|
|
|
Uuid& Uuid::operator= (const Uuid& other)
|
|
{
|
|
value = other.value;
|
|
return *this;
|
|
}
|
|
|
|
bool Uuid::operator== (const Uuid& other) const
|
|
{
|
|
return value.asInt64[0] == other.value.asInt64[0]
|
|
&& value.asInt64[1] == other.value.asInt64[1];
|
|
}
|
|
|
|
bool Uuid::operator!= (const Uuid& other) const
|
|
{
|
|
return ! operator== (other);
|
|
}
|
|
|
|
bool Uuid::isNull() const noexcept
|
|
{
|
|
return (value.asInt64 [0] == 0) && (value.asInt64 [1] == 0);
|
|
}
|
|
|
|
//==============================================================================
|
|
String Uuid::toString() const
|
|
{
|
|
return String::toHexString (value.asBytes, sizeof (value.asBytes), 0);
|
|
}
|
|
|
|
Uuid::Uuid (const String& uuidString)
|
|
{
|
|
operator= (uuidString);
|
|
}
|
|
|
|
Uuid& Uuid::operator= (const String& uuidString)
|
|
{
|
|
MemoryBlock mb;
|
|
mb.loadFromHexString (uuidString);
|
|
mb.ensureSize (sizeof (value.asBytes), true);
|
|
mb.copyTo (value.asBytes, 0, sizeof (value.asBytes));
|
|
return *this;
|
|
}
|
|
|
|
//==============================================================================
|
|
Uuid::Uuid (const uint8* const rawData)
|
|
{
|
|
operator= (rawData);
|
|
}
|
|
|
|
Uuid& Uuid::operator= (const uint8* const rawData)
|
|
{
|
|
if (rawData != nullptr)
|
|
memcpy (value.asBytes, rawData, sizeof (value.asBytes));
|
|
else
|
|
zeromem (value.asBytes, sizeof (value.asBytes));
|
|
|
|
return *this;
|
|
}
|
|
|
|
|
|
END_JUCE_NAMESPACE
|