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Editor/Util/ChunkFile.cpp

@@ -0,0 +1,130 @@
+////////////////////////////////////////////////////////////////////////////
+//
+//  Crytek Engine Source File.
+//  Copyright (C), Crytek Studios, 2002.
+// -------------------------------------------------------------------------
+//  File name:   chunkfile.cpp
+//  Version:     v1.00
+//  Created:     15/12/2002 by Timur.
+//  Compilers:   Visual Studio.NET
+//  Description: 
+// -------------------------------------------------------------------------
+//  History:
+//
+////////////////////////////////////////////////////////////////////////////
+
+#include "StdAfx.h"
+#include "ChunkFile.h"
+
+#include "CryHeaders.h"
+
+//////////////////////////////////////////////////////////////////////////
+// CChunkFile implementation.
+//////////////////////////////////////////////////////////////////////////
+CChunkFile::CChunkFile()
+{
+	m_fileHeader.FileType				= FileType_Geom;
+	m_fileHeader.ChunkTableOffset		= -1;
+	m_fileHeader.Version				= GeomFileVersion;
+		
+	strcpy(m_fileHeader.Signature,FILE_SIGNATURE);
+}
+
+//////////////////////////////////////////////////////////////////////////
+CChunkFile::~CChunkFile()
+{
+}
+
+//////////////////////////////////////////////////////////////////////////
+bool CChunkFile::Write( const char *filename )
+{
+	FILE *file = fopen( filename,"wb" );
+	if (!file)
+		return false;
+
+	unsigned i;
+
+	fseek( file,sizeof(m_fileHeader),SEEK_SET );
+
+	for(i=0;i<m_chunks.size();i++)
+	{
+		int ofs = ftell(file);
+		// write header.
+		ChunkDesc &ch = m_chunks[i];
+		ch.hdr.FileOffset = ofs;
+		memcpy( ch.data->GetBuffer(),&ch.hdr,sizeof(ch.hdr) );
+		// write data.
+		fwrite( ch.data->GetBuffer(),ch.data->GetSize(),1,file );
+	}
+
+	int chunkTableOffset = ftell(file);
+
+	//=======================
+	//Write # of Chunks
+	//=======================
+	unsigned nch = m_chunks.size();
+	if (fwrite(&nch,sizeof(nch),1,file) !=1)
+		return false;
+
+	//=======================
+	//Write Chunk List
+	//=======================
+	for(i=0;i<nch;i++)
+	{
+		CHUNK_HEADER &hdr = m_chunks[i].hdr;
+		if (fwrite(&hdr,sizeof(hdr),1,file)!=1)
+			return false;
+	}
+
+	//update Header for chunk list offset
+	m_fileHeader.ChunkTableOffset	= chunkTableOffset;
+	fseek(file,0,SEEK_SET);
+	if (fwrite(&m_fileHeader,sizeof(m_fileHeader),1,file) != 1)
+		return false;
+
+	fclose(file);
+
+	return true;
+}
+
+//////////////////////////////////////////////////////////////////////////
+CChunkFile::ChunkDesc* CChunkFile::FindChunkByType( int type )
+{
+	for(unsigned i=0; i<m_chunks.size();i++)
+	{
+		if (m_chunks[i].hdr.ChunkType == type) 
+		{
+			return &m_chunks[i];
+		}
+	}
+	return 0;
+}
+
+//////////////////////////////////////////////////////////////////////////
+CChunkFile::ChunkDesc* CChunkFile::FindChunkById( int id )
+{
+	for(unsigned i=0; i<m_chunks.size();i++)
+	{
+		if (m_chunks[i].hdr.ChunkID == id) 
+		{
+			return &m_chunks[i];
+		}
+	}
+	return 0;
+}
+
+//////////////////////////////////////////////////////////////////////////
+int CChunkFile::AddChunk( const CHUNK_HEADER &hdr,void *chunkData,int chunkSize )
+{
+	ChunkDesc chunk;
+	chunk.hdr = hdr;
+	chunk.data = new CMemoryBlock;
+	chunk.data->Allocate( chunkSize );
+	chunk.data->Copy( chunkData,chunkSize );
+
+	int chunkID = m_chunks.size() + 1;
+	chunk.hdr.ChunkID = chunkID;
+	m_chunks.push_back( chunk );
+	return chunkID;
+}
+