AvatarsConquest/Source/Persistence/BinaryMemoryWriter.cs

86 lines
No EOL
2.7 KiB
C#

/***************************************************************************
* BinaryMemoryWriter.cs
* -------------------
* begin : May 1, 2002
* copyright : (C) The RunUO Software Team
* email : info@runuo.com
*
* $Id$
*
***************************************************************************/
/***************************************************************************
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
***************************************************************************/
using System;
using System.IO;
using System.Collections.Generic;
using System.Text;
namespace Server {
public sealed class BinaryMemoryWriter : BinaryFileWriter {
private MemoryStream stream;
protected override int BufferSize {
get { return 512; }
}
public BinaryMemoryWriter()
: base( new MemoryStream( 512 ), true ) {
this.stream = this.UnderlyingStream as MemoryStream;
}
private static byte[] indexBuffer;
public int CommitTo( SequentialFileWriter dataFile, SequentialFileWriter indexFile, int typeCode, int serial ) {
Flush();
byte[] buffer = stream.GetBuffer();
int length = ( int ) stream.Length;
long position = dataFile.Position;
dataFile.Write( buffer, 0, length );
if ( indexBuffer == null ) {
indexBuffer = new byte[20];
}
indexBuffer[0] = ( byte ) ( typeCode );
indexBuffer[1] = ( byte ) ( typeCode >> 8 );
indexBuffer[2] = ( byte ) ( typeCode >> 16 );
indexBuffer[3] = ( byte ) ( typeCode >> 24 );
indexBuffer[4] = ( byte ) ( serial );
indexBuffer[5] = ( byte ) ( serial >> 8 );
indexBuffer[6] = ( byte ) ( serial >> 16 );
indexBuffer[7] = ( byte ) ( serial >> 24 );
indexBuffer[8] = ( byte ) ( position );
indexBuffer[9] = ( byte ) ( position >> 8 );
indexBuffer[10] = ( byte ) ( position >> 16 );
indexBuffer[11] = ( byte ) ( position >> 24 );
indexBuffer[12] = ( byte ) ( position >> 32 );
indexBuffer[13] = ( byte ) ( position >> 40 );
indexBuffer[14] = ( byte ) ( position >> 48 );
indexBuffer[15] = ( byte ) ( position >> 56 );
indexBuffer[16] = ( byte ) ( length );
indexBuffer[17] = ( byte ) ( length >> 8 );
indexBuffer[18] = ( byte ) ( length >> 16 );
indexBuffer[19] = ( byte ) ( length >> 24 );
indexFile.Write( indexBuffer, 0, indexBuffer.Length );
stream.SetLength( 0 );
return length;
}
}
}