public void WriteByte(long index, byte value)
{
try
{
long num;
DataBlock dataBlock = this.GetDataBlock(index, out num);
MemoryDataBlock block2 = dataBlock as MemoryDataBlock;
if (block2 != null)
{
block2.Data[(int)((IntPtr)(index - num))] = value;
}
else
{
FileDataBlock block = (FileDataBlock)dataBlock;
if ((num == index) && (dataBlock.PreviousBlock != null))
{
MemoryDataBlock previousBlock = dataBlock.PreviousBlock as MemoryDataBlock;
if (previousBlock != null)
{
previousBlock.AddByteToEnd(value);
block.RemoveBytesFromStart(1L);
if (block.Length == 0L)
{
this._dataMap.Remove(block);
}
return;
}
}
if ((((num + block.Length) - 1L) == index) && (dataBlock.NextBlock != null))
{
MemoryDataBlock nextBlock = dataBlock.NextBlock as MemoryDataBlock;
if (nextBlock != null)
{
nextBlock.AddByteToStart(value);
block.RemoveBytesFromEnd(1L);
if (block.Length == 0L)
{
this._dataMap.Remove(block);
}
return;
}
}
FileDataBlock newBlock = null;
if (index > num)
{
newBlock = new FileDataBlock(block.FileOffset, index - num);
}
FileDataBlock block7 = null;
if (index < ((num + block.Length) - 1L))
{
block7 = new FileDataBlock(((block.FileOffset + index) - num) + 1L, block.Length - ((index - num) + 1L));
}
dataBlock = this._dataMap.Replace(dataBlock, new MemoryDataBlock(value));
if (newBlock != null)
{
this._dataMap.AddBefore(dataBlock, newBlock);
}
if (block7 != null)
{
this._dataMap.AddAfter(dataBlock, block7);
}
}
}
finally
{
this.OnChanged(EventArgs.Empty);
}
}
public void WriteByte(long index, byte value)
{
try
{
long blockOffset;
DataBlock dataBlock = GetDataBlock(index, out blockOffset);
MemoryDataBlock memoryDataBlock1 = dataBlock as MemoryDataBlock;
if (memoryDataBlock1 != null)
{
memoryDataBlock1.Data[index - blockOffset] = value;
}
else
{
FileDataBlock fileDataBlock1 = (FileDataBlock)dataBlock;
if (blockOffset == index && dataBlock.PreviousBlock != null)
{
MemoryDataBlock memoryDataBlock2 = dataBlock.PreviousBlock as MemoryDataBlock;
if (memoryDataBlock2 != null)
{
memoryDataBlock2.AddByteToEnd(value);
fileDataBlock1.RemoveBytesFromStart(1L);
if (fileDataBlock1.Length != 0L)
{
return;
}
_dataMap.Remove((DataBlock)fileDataBlock1);
return;
}
}
if (blockOffset + fileDataBlock1.Length - 1L == index && dataBlock.NextBlock != null)
{
MemoryDataBlock memoryDataBlock2 = dataBlock.NextBlock as MemoryDataBlock;
if (memoryDataBlock2 != null)
{
memoryDataBlock2.AddByteToStart(value);
fileDataBlock1.RemoveBytesFromEnd(1L);
if (fileDataBlock1.Length != 0L)
{
return;
}
_dataMap.Remove((DataBlock)fileDataBlock1);
return;
}
}
FileDataBlock fileDataBlock2 = (FileDataBlock)null;
if (index > blockOffset)
{
fileDataBlock2 = new FileDataBlock(fileDataBlock1.FileOffset, index - blockOffset);
}
FileDataBlock fileDataBlock3 = (FileDataBlock)null;
if (index < blockOffset + fileDataBlock1.Length - 1L)
{
fileDataBlock3 = new FileDataBlock(fileDataBlock1.FileOffset + index - blockOffset + 1L, fileDataBlock1.Length - (index - blockOffset + 1L));
}
DataBlock block = _dataMap.Replace(dataBlock, (DataBlock) new MemoryDataBlock(value));
if (fileDataBlock2 != null)
{
_dataMap.AddBefore(block, (DataBlock)fileDataBlock2);
}
if (fileDataBlock3 == null)
{
return;
}
_dataMap.AddAfter(block, (DataBlock)fileDataBlock3);
}
}
finally
{
OnChanged(EventArgs.Empty);
}
}