Added: #1440 Simple library for serializing max storage through an IStream
--HG-- branch : build_pipeline_v3hg/feature/build_pipeline_v3
kaetemi
12 years ago
parent
9beb31bac4
commit
635092b0db
@ -0,0 +1,189 @@
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/**
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* \file storage_chunks.cpp
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* \brief CStorageChunks
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* \date 2012-08-18 09:20GMT
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* \author Jan Boon (Kaetemi)
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* CStorageChunks
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*/
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/*
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* Copyright (C) 2012 by authors
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*
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* This file is part of RYZOM CORE PIPELINE.
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* RYZOM CORE PIPELINE is free software: you can redistribute it
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* and/or modify it under the terms of the GNU Affero General Public
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* License as published by the Free Software Foundation, either
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* version 3 of the License, or (at your option) any later version.
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*
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* RYZOM CORE PIPELINE is distributed in the hope that it will be
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* useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public
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* License along with RYZOM CORE PIPELINE. If not, see
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* <http://www.gnu.org/licenses/>.
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*/
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#include <nel/misc/types_nl.h>
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#include "storage_chunks.h"
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// STL includes
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// NeL includes
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#include <nel/misc/debug.h>
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// Project includes
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// using namespace std;
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// using namespace NLMISC;
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// #define NL_DEBUG_STORAGE
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namespace PIPELINE {
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namespace MAX {
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CStorageChunks::CStorageChunks(NLMISC::IStream &stream, sint64 size) : m_Stream(stream), m_Is64Bit(false)
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{
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if (size >= 2147483647L)
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throw NLMISC::EStream("64bit chunks not supported");
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m_Chunks.reserve(64);
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m_Chunks.resize(1);
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m_Chunks[0].HeaderSize = 0;
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m_Chunks[0].OffsetBegin = stream.getPos();
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if (stream.isReading())
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{
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m_Chunks[0].Id = 0;
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m_Chunks[0].Size = 0x80000000 | (uint32)(size);
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}
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else
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{
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m_Chunks[0].Id = 1;
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m_Chunks[0].Size = 0;
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}
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}
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CStorageChunks::~CStorageChunks()
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{
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#ifdef NL_DEBUG_STORAGE
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if (m_Chunks.size() != 1)
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nldebug("Not all chunks were closed");
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#endif
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}
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bool CStorageChunks::enterChunk()
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{
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if (m_Stream.isReading())
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{
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// input logic
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if (!isChunkContainer())
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{
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#ifdef NL_DEBUG_STORAGE
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nldebug("Current chunk is not a container, cannot enter");
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#endif
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return false;
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}
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if (endOfChunk())
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{
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#ifdef NL_DEBUG_STORAGE
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nldebug("End of chunk, cannot enter");
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#endif
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return false;
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}
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m_Chunks.resize(m_Chunks.size() + 1);
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CChunk *chunk = currentChunk();
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chunk->OffsetBegin = m_Stream.getPos();
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m_Stream.serial(chunk->Id);
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m_Stream.serial(chunk->Size);
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chunk->HeaderSize = 6;
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if (chunk->Size == 0)
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{
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// this is a 64bit chunk
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uint64 size64;
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m_Stream.serial(size64);
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chunk->HeaderSize += 8;
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bool iscont = (size64 & 0x8000000000000000) == 0x8000000000000000;
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size64 &= 0x7FFFFFFFFFFFFFFF;
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if (size64 >= 2147483647L)
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throw NLMISC::EStream("64bit chunks not supported");
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// downgrade to 32 bit chunk
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chunk->Size = (uint32)size64;
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if (iscont) chunk->Size |= 0x80000000;
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m_Is64Bit = true; // it's true
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}
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return true;
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}
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else
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{
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#ifdef NL_DEBUG_STORAGE
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nldebug("No input, this function cannot output, throw exception");
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#endif
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throw NLMISC::EStream();
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}
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}
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bool CStorageChunks::enterChunk(uint16 id, bool container)
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{
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if (!m_Stream.isReading())
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{
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if (m_Is64Bit)
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throw NLMISC::EStream("64bit chunks not supported");
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// enter the new chunk
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m_Chunks.resize(m_Chunks.size() + 1);
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CChunk *chunk = currentChunk();
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uint32 sizeDummy = 0xFFFFFFFF;
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chunk->Id = container ? 1 : 0;
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chunk->OffsetBegin = m_Stream.getPos(); // store current pos
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// write header
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m_Stream.serial(id); // write the id
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m_Stream.serial(sizeDummy); // write 32 bit size placeholder
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return true;
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}
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else // input or exception
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{
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while (enterChunk())
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{
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if (getChunkId() == id)
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return true;
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leaveChunk(); // skip data
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}
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return false;
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}
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}
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sint32 CStorageChunks::leaveChunk()
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{
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if (m_Stream.isReading())
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{
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// input logic
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sint32 skipped = currentChunk()->endOfChunk() - m_Stream.getPos();
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if (skipped)
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{
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m_Stream.seek(currentChunk()->endOfChunk(), NLMISC::IStream::begin);
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#ifdef NL_DEBUG_STORAGE
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nldebug("Skipped %i bytes in the current chunk", skipped);
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#endif
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}
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m_Chunks.resize(m_Chunks.size() - 1);
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return skipped;
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}
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else
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{
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sint32 pos = m_Stream.getPos();
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sint32 sizeWithHeader = pos - currentChunk()->OffsetBegin;
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sint32 sizePos = currentChunk()->OffsetBegin + 2;
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m_Stream.seek(sizePos, NLMISC::IStream::begin); // hopefully this correctly overwrites!!!
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uint32 sizeField = (uint32)sizeWithHeader | (uint32)currentChunk()->Id << 31; // add container flag
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m_Stream.serial(sizeField);
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m_Stream.seek(pos, NLMISC::IStream::begin);
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m_Chunks.resize(m_Chunks.size() - 1);
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return sizeWithHeader;
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}
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}
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} /* namespace MAX */
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} /* namespace PIPELINE */
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/* end of file */
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@ -0,0 +1,107 @@
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/**
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* \file storage_chunks.h
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* \brief CStorageChunks
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* \date 2012-08-18 09:20GMT
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* \author Jan Boon (Kaetemi)
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* CStorageChunks
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*/
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/*
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* Copyright (C) 2012 by authors
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*
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* This file is part of RYZOM CORE PIPELINE.
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* RYZOM CORE PIPELINE is free software: you can redistribute it
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* and/or modify it under the terms of the GNU Affero General Public
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* License as published by the Free Software Foundation, either
|
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* version 3 of the License, or (at your option) any later version.
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*
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* RYZOM CORE PIPELINE is distributed in the hope that it will be
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* useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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||||
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public
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* License along with RYZOM CORE PIPELINE. If not, see
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* <http://www.gnu.org/licenses/>.
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*/
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#ifndef PIPELINE_STORAGE_CHUNKS_H
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#define PIPELINE_STORAGE_CHUNKS_H
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#include <nel/misc/types_nl.h>
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// STL includes
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// NeL includes
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#include <nel/misc/stream.h>
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// Project includes
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namespace PIPELINE {
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namespace MAX {
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/**
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* \brief CStorageChunks
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* \date 2012-08-18 09:20GMT
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* \author Jan Boon (Kaetemi)
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* CStorageChunks
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*/
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class CStorageChunks
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{
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private:
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struct CChunk
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{
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// Size of the chunk header, 6 for 32 bit, 14 for 64 bit
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uint8 HeaderSize;
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// Where the header starts
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sint32 OffsetBegin;
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// Identifier
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uint16 Id;
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// Size including header size
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uint32 Size;
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inline sint32 getSizeWithHeader() const { return (sint32)(Size & 0x7FFFFFFF); }
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inline sint32 getSize() const { return getSizeWithHeader() - (sint32)HeaderSize; }
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inline bool isContainer() const { return (Size & 0x80000000) == 0x80000000; }
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inline sint32 endOfChunk() const { return OffsetBegin + getSizeWithHeader(); }
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inline sint32 getDataBegin() const { return OffsetBegin + (sint32)HeaderSize; }
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};
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public:
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CStorageChunks(NLMISC::IStream &stream, sint64 size = 0);
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virtual ~CStorageChunks();
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// Returns true if there's another chunk, false if no more chunks in this container or if the current chunk is not a container
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bool enterChunk();
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// Reads and skips chunks until the one with given id is found, or writes a chunk with this id
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bool enterChunk(uint16 id, bool container);
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// Returns the number of skipped bytes in read more, returns chunk size including header in write mode
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sint32 leaveChunk();
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inline bool is64Bit() const { return m_Is64Bit; }
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inline void set64Bit(bool enabled = true) { m_Is64Bit = enabled; }
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inline uint16 getChunkId() const { return currentChunk()->Id; }
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inline sint32 getChunkSize() const { return currentChunk()->getSize(); }
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inline bool isChunkContainer() const { return currentChunk()->isContainer(); }
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inline bool endOfChunk() const { return /*m_Chunks.size() == 1 ? eof() :*/ m_Stream.getPos() >= currentChunk()->endOfChunk(); }
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inline NLMISC::IStream &stream() { return m_Stream; }
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private:
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inline const CChunk *currentChunk() const { return &m_Chunks[m_Chunks.size() - 1]; }
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inline CChunk *currentChunk() { return &m_Chunks[m_Chunks.size() - 1]; }
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private:
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NLMISC::IStream &m_Stream;
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std::vector<CChunk> m_Chunks;
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bool m_Is64Bit;
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}; /* class CStorageChunks */
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} /* namespace MAX */
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} /* namespace PIPELINE */
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#endif /* #ifndef PIPELINE_STORAGE_CHUNKS_H */
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/* end of file */
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@ -0,0 +1,236 @@
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/**
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* \file storage_object.cpp
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* \brief CStorageObject
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* \date 2012-08-18 09:02GMT
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* \author Jan Boon (Kaetemi)
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* CStorageObject
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*/
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/*
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* Copyright (C) 2012 by authors
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*
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* This file is part of RYZOM CORE PIPELINE.
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* RYZOM CORE PIPELINE is free software: you can redistribute it
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* and/or modify it under the terms of the GNU Affero General Public
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* License as published by the Free Software Foundation, either
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* version 3 of the License, or (at your option) any later version.
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*
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* RYZOM CORE PIPELINE is distributed in the hope that it will be
|
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* useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public
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* License along with RYZOM CORE PIPELINE. If not, see
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* <http://www.gnu.org/licenses/>.
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*/
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#include <nel/misc/types_nl.h>
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#include "storage_object.h"
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// STL includes
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#include <iomanip>
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// NeL includes
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// #include <nel/misc/debug.h>
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// Project includes
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#include "storage_stream.h"
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#include "storage_chunks.h"
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// using namespace std;
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// using namespace NLMISC;
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#define NL_DEBUG_STORAGE
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namespace PIPELINE {
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namespace MAX {
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////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////
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std::string IStorageObject::toString()
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{
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std::stringstream ss;
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toString(ss);
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return ss.str();
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}
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void IStorageObject::setSize(sint32 size)
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{
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// ignore
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}
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bool IStorageObject::getSize(sint32 &size) const
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{
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return false;
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}
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bool IStorageObject::isContainer() const
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{
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return false;
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}
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////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////
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std::string CStorageContainer::getClassName() // why is this not const in IClassable?
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{
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return "StorageContainer";
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}
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void CStorageContainer::serial(NLMISC::IStream &stream)
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{
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if (stream.getPos() == 0)
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{
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CStorageStream *storageStream = dynamic_cast<CStorageStream *>(&stream);
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if (storageStream)
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{
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// implicitly assume the entire stream is the container
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CStorageChunks chunks(stream, stream.isReading() ? storageStream->size() : 0);
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serial(chunks);
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return;
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}
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}
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// wrapping the container inside a stream with necessary size markers
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{
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const uint32 magic = 0xC0C01473;
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stream.serialCheck(magic);
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uint version = stream.serialVersion(1);
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sint32 sizePos;
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bool reading = stream.isReading();
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if (!reading)
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sizePos = stream.getPos();
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sint64 size = 0;
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stream.serial(size);
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CStorageChunks chunks(stream, size);
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serial(chunks);
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if (!reading)
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{
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sint32 returnPos = stream.getPos();
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stream.seek(sizePos, NLMISC::IStream::begin);
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stream.serial(size);
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stream.seek(returnPos, NLMISC::IStream::begin);
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}
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return;
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}
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}
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void CStorageContainer::toString(std::ostream &ostream, const std::string &pad)
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{
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// note: only use pad when multi-lining
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// like Blah: (Something) "SingleValue"
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// Blahblah: (Container) {
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// Moo: (Foo) "What" }
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// only increase pad when multi-lining sub-items
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ostream << "(" << getClassName() << ") { ";
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std::string padpad = pad + "\t";
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for (TStorageObjectContainer::const_iterator it = Chunks.begin(), end = Chunks.end(); it != end; ++it)
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{
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std::stringstream ss;
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ss << std::hex << std::setfill('0');
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ss << std::setw(4) << it->first;
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ostream << "\n" << pad << "0x" << ss.str() << ": ";
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it->second->toString(ostream, padpad);
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}
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ostream << "} ";
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}
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bool CStorageContainer::isContainer() const
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{
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return true;
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}
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void CStorageContainer::serial(CStorageChunks &chunks)
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{
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if (chunks.stream().isReading())
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{
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#ifdef NL_DEBUG_STORAGE
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if (Chunks.size())
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{
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nldebug("Storage container not empty, clearing");
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}
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#endif
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Chunks.clear();
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while (chunks.enterChunk())
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{
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uint16 id = chunks.getChunkId();
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IStorageObject *storageObject = createChunkById(id, chunks.isChunkContainer());
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storageObject->setSize(chunks.getChunkSize());
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if (storageObject->isContainer()) static_cast<CStorageContainer *>(storageObject)->serial(chunks);
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else storageObject->serial(chunks.stream());
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Chunks.push_back(TStorageObjectWithId(id, storageObject));
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if (chunks.leaveChunk()) // bytes were skipped while reading
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throw EStorage();
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}
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}
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else
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{
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for (TStorageObjectContainer::iterator it = Chunks.begin(), end = Chunks.end(); it != end; ++it)
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{
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chunks.enterChunk(it->first, it->second->isContainer());
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it->second->serial(chunks.stream());
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chunks.leaveChunk();
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}
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}
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}
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IStorageObject *CStorageContainer::createChunkById(uint16 id, bool container)
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{
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if (container)
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{
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return new CStorageContainer();
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}
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else
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{
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return new CStorageRaw();
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}
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}
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////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////
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std::string CStorageRaw::getClassName()
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{
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return "StorageRaw";
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}
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void CStorageRaw::serial(NLMISC::IStream &stream)
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{
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stream.serialBuffer(&Value[0], Value.size());
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}
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void CStorageRaw::toString(std::ostream &ostream, const std::string &pad)
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{
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// note: only use pad when multi-lining
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// like Blah: (Something) "SingleValue"
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// Blahblah: (Container) {
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// Moo: (Foo) "What" }
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||||
// only increase pad when multi-lining sub-items
|
||||
ostream << "(" << getClassName() << ") { ";
|
||||
|
||||
ostream << "} ";
|
||||
}
|
||||
|
||||
void CStorageRaw::setSize(sint32 size)
|
||||
{
|
||||
Value.resize(size);
|
||||
}
|
||||
|
||||
bool CStorageRaw::getSize(sint32 &size) const
|
||||
{
|
||||
size = Value.size();
|
||||
return true;
|
||||
}
|
||||
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
|
||||
} /* namespace MAX */
|
||||
} /* namespace PIPELINE */
|
||||
|
||||
/* end of file */
|
||||
@ -0,0 +1,143 @@
|
||||
/**
|
||||
* \file storage_object.h
|
||||
* \brief CStorageObject
|
||||
* \date 2012-08-18 09:02GMT
|
||||
* \author Jan Boon (Kaetemi)
|
||||
* CStorageObject
|
||||
*/
|
||||
|
||||
/*
|
||||
* Copyright (C) 2012 by authors
|
||||
*
|
||||
* This file is part of RYZOM CORE PIPELINE.
|
||||
* RYZOM CORE PIPELINE is free software: you can redistribute it
|
||||
* and/or modify it under the terms of the GNU Affero General Public
|
||||
* License as published by the Free Software Foundation, either
|
||||
* version 3 of the License, or (at your option) any later version.
|
||||
*
|
||||
* RYZOM CORE PIPELINE 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 Affero General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Affero General Public
|
||||
* License along with RYZOM CORE PIPELINE. If not, see
|
||||
* <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#ifndef PIPELINE_STORAGE_OBJECT_H
|
||||
#define PIPELINE_STORAGE_OBJECT_H
|
||||
#include <nel/misc/types_nl.h>
|
||||
|
||||
// STL includes
|
||||
#include <sstream>
|
||||
|
||||
// NeL includes
|
||||
#include <nel/misc/stream.h>
|
||||
|
||||
// Project includes
|
||||
|
||||
namespace PIPELINE {
|
||||
namespace MAX {
|
||||
class CStorageChunks;
|
||||
|
||||
struct EStorage : public NLMISC::Exception
|
||||
{
|
||||
EStorage() : NLMISC::Exception("PIPELINE::MAX::EStorage") { }
|
||||
virtual ~EStorage() throw() { }
|
||||
};
|
||||
|
||||
// IStorageObject : exposes serial(CStorageStream &stream) and dump(const std::string &pad)
|
||||
class IStorageObject : public NLMISC::IStreamable
|
||||
{
|
||||
public:
|
||||
// virtual std::string getClassName() = 0; // inherited from NLMISC::IClassable through NLMISC::IStreamable
|
||||
// virtual void serial(NLMISC::IStream &stream); // inherited from NLMISC::IStreamable
|
||||
std::string toString();
|
||||
virtual void toString(std::ostream &ostream, const std::string &pad = "") = 0;
|
||||
|
||||
public: // should be protected but that doesn't compile, nice c++!
|
||||
// Sets size when reading
|
||||
virtual void setSize(sint32 size);
|
||||
// Gets the size when writing, return false if unknown
|
||||
virtual bool getSize(sint32 &size) const;
|
||||
// Only true when inherting from CStorageContainer
|
||||
virtual bool isContainer() const;
|
||||
};
|
||||
|
||||
// CStorageContainer : serializes a container chunk
|
||||
class CStorageContainer : public IStorageObject
|
||||
{
|
||||
public:
|
||||
// public data
|
||||
typedef std::pair<uint16, IStorageObject *> TStorageObjectWithId;
|
||||
typedef std::vector<TStorageObjectWithId> TStorageObjectContainer;
|
||||
TStorageObjectContainer Chunks;
|
||||
|
||||
// inherited
|
||||
virtual std::string getClassName();
|
||||
virtual void serial(NLMISC::IStream &stream); // only used to wrap a container inside another stream
|
||||
virtual void toString(std::ostream &ostream, const std::string &pad = "");
|
||||
|
||||
public: // should be protected but that doesn't compile, nice c++!
|
||||
// inherited
|
||||
virtual bool isContainer() const;
|
||||
|
||||
protected:
|
||||
// override in subclasses, default to parent if not handled
|
||||
virtual void serial(CStorageChunks &chunks);
|
||||
virtual IStorageObject *createChunkById(uint16 id, bool container);
|
||||
};
|
||||
|
||||
// CStorageRaw : serializes raw data, use for unknown data
|
||||
class CStorageRaw : public IStorageObject
|
||||
{
|
||||
public:
|
||||
// public data
|
||||
typedef std::vector<uint8> TType;
|
||||
TType Value;
|
||||
|
||||
// inherited
|
||||
virtual std::string getClassName();
|
||||
virtual void serial(NLMISC::IStream &stream);
|
||||
virtual void toString(std::ostream &ostream, const std::string &pad = "");
|
||||
|
||||
public: // should be protected but that doesn't compile, nice c++!
|
||||
// Sets size when reading
|
||||
virtual void setSize(sint32 size);
|
||||
// Gets the size when writing, return false if unknown
|
||||
virtual bool getSize(sint32 &size) const;
|
||||
};
|
||||
/*
|
||||
// CStorageUCString : serializes an ucstring chunk
|
||||
class CStorageUCString : public ucstring, public IStorageObject
|
||||
{
|
||||
public:
|
||||
virtual void serial(CStorageStream *stream);
|
||||
virtual void dump(const std::string &pad);
|
||||
};
|
||||
|
||||
// CStorageString : serializes a string chunk
|
||||
class CStorageString : public std::string, public IStorageObject
|
||||
{
|
||||
public:
|
||||
virtual void serial(CStorageStream *stream);
|
||||
virtual void dump(const std::string &pad);
|
||||
};
|
||||
|
||||
template<typename T>
|
||||
class CStorageValue : public IStorageObject
|
||||
{
|
||||
public:
|
||||
T Value;
|
||||
virtual void serial(CStorageStream *stream);
|
||||
virtual void dump(const std::string &pad);
|
||||
};
|
||||
*/
|
||||
|
||||
} /* namespace MAX */
|
||||
} /* namespace PIPELINE */
|
||||
|
||||
#endif /* #ifndef PIPELINE_STORAGE_OBJECT_H */
|
||||
|
||||
/* end of file */
|
||||
Loading…
Reference in New Issue