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93 lines
2.3 KiB
C++
93 lines
2.3 KiB
C++
/*
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* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
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* its licensors.
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*
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* For complete copyright and license terms please see the LICENSE at the root of this
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* distribution (the "License"). All use of this software is governed by the License,
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* or, if provided, by the license below or the license accompanying this file. Do not
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* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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*
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*/
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// Original file Copyright Crytek GMBH or its affiliates, used under license.
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#include "CrySystem_precompiled.h"
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#include <platform.h>
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#include "Serialization/Assert.h"
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#include "MemoryReader.h"
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#include <stdlib.h>
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#include <memory.h>
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namespace Serialization {
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MemoryReader::MemoryReader()
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: size_(0)
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, position_(0)
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, memory_(0)
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, ownedMemory_(false)
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{
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}
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MemoryReader::MemoryReader(const void* memory, std::size_t size, bool ownAndFree)
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: size_(size)
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, position_((const char*)(memory))
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, memory_((const char*)(memory))
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, ownedMemory_(ownAndFree)
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{
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}
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MemoryReader::~MemoryReader()
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{
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if (ownedMemory_)
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{
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free(const_cast<char*>(memory_));
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memory_ = 0;
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size_ = 0;
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}
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}
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void MemoryReader::setPosition(const char* position)
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{
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position_ = position;
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}
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void MemoryReader::read(void* data, std::size_t size)
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{
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YASLI_ASSERT(memory_ && position_);
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YASLI_ASSERT(position_ - memory_ + size <= size_);
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memcpy(data, position_, size);
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position_ += size;
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}
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bool MemoryReader::checkedRead(void* data, std::size_t size)
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{
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if (!memory_ || !position_)
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{
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return false;
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}
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if (position_ - memory_ + size > size_)
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{
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return false;
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}
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memcpy(data, position_, size);
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position_ += size;
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return true;
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}
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bool MemoryReader::checkedSkip(std::size_t size)
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{
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if (!memory_ || !position_)
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{
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return false;
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}
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if (position_ - memory_ + size > size_)
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{
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return false;
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}
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position_ += size;
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return true;
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}
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}
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