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97 lines
3.5 KiB
C++
97 lines
3.5 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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#ifndef CRYINCLUDE_CRY3DENGINE_CGF_READONLYCHUNKFILE_H
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#define CRYINCLUDE_CRY3DENGINE_CGF_READONLYCHUNKFILE_H
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#pragma once
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#include <CrySizer.h>
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#include <CryHeaders.h>
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#include <smartptr.h>
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#include <IChunkFile.h>
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////////////////////////////////////////////////////////////////////////
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// Chunk file reader.
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// Accesses a chunked file structure through file mapping object.
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// Opens a chunk file and checks for its validity.
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// If it's invalid, closes it as if there was no open operation.
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// Error handling is performed through the return value of Read: it must
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// be true for successfully open files
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////////////////////////////////////////////////////////////////////////
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class CReadOnlyChunkFile
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: public IChunkFile
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{
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public:
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//////////////////////////////////////////////////////////////////////////
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CReadOnlyChunkFile(bool bCopyFileData, bool bNoWarningMode = false);
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virtual ~CReadOnlyChunkFile();
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// interface IChunkFile --------------------------------------------------
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virtual void Release() { delete this; }
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virtual bool IsReadOnly() const { return true; }
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virtual bool IsLoaded() const { return m_bLoaded; }
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virtual bool Read(const char* filename);
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virtual bool ReadFromMemory(const void* pData, int nDataSize);
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virtual bool Write([[maybe_unused]] const char* filename) { return false; }
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virtual bool WriteToMemoryBuffer([[maybe_unused]] void** pData, [[maybe_unused]] int* nSize) { return false; }
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virtual void ReleaseMemoryBuffer() {}
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virtual int AddChunk([[maybe_unused]] ChunkTypes chunkType, [[maybe_unused]] int chunkVersion, [[maybe_unused]] EEndianness eEndianness, [[maybe_unused]] const void* chunkData, [[maybe_unused]] int chunkSize) { return -1; }
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virtual void DeleteChunkById([[maybe_unused]] int nChunkId) {}
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virtual void DeleteChunksByType([[maybe_unused]] ChunkTypes nChunkType) {}
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virtual ChunkDesc* FindChunkByType(ChunkTypes nChunkType);
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virtual ChunkDesc* FindChunkById(int nChunkId);
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virtual int NumChunks() const;
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virtual ChunkDesc* GetChunk(int nIndex);
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virtual const ChunkDesc* GetChunk(int nIndex) const;
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virtual const char* GetLastError() const { return m_LastError; }
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// -----------------------------------------------------------------------
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virtual void GetMemoryUsage(ICrySizer* pSizer) const
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{
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pSizer->AddObject(this, sizeof(*this));
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pSizer->AddObject(m_LastError);
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pSizer->AddObject(m_chunks);
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}
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private:
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bool ReadChunkTableFromBuffer();
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void FreeBuffer();
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private:
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// this variable contains the last error occurred in this class
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string m_LastError;
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std::vector<ChunkDesc> m_chunks;
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char* m_pFileBuffer;
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int m_nBufferSize;
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bool m_bOwnFileBuffer;
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bool m_bNoWarningMode;
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bool m_bLoaded;
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bool m_bCopyFileData;
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};
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TYPEDEF_AUTOPTR(CReadOnlyChunkFile);
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#endif // CRYINCLUDE_CRY3DENGINE_CGF_READONLYCHUNKFILE_H
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