/// <summary>
/// 文件流写入器
/// </summary>
/// <param name="cache"></param>
/// <param name="config"></param>
internal FileStreamWriter(CacheManager cache, MasterServerConfig config)
{
this.cache = cache;
Config = config;
bufferPool = SubBuffer.Pool.GetPool(config.BufferSize);
flushHandle = flush;
FileInfo file = new FileInfo(config.GetFileName);
FileName = file.FullName;
IsDisposed = 1;
FileMode createMode = FileMode.CreateNew;
FileBuffers buffer = default(FileBuffers);
try
{
if (file.Exists)
{
if (file.Length == 0)
{
createMode = FileMode.Create;
}
else
{
fileStream = new FileStream(FileName, FileMode.Open, FileAccess.ReadWrite, FileShare.Read, bufferPool.Size, FileOptions.None);
bufferPool.Get(ref buffer.Buffer);
if (fileStream.Read(buffer.Buffer.Buffer, buffer.Buffer.StartIndex, fileHeaderSize) == fileHeaderSize)
{
fixed(byte *bufferFixed = buffer.Buffer.GetFixedBuffer())
{
byte *bufferStart = bufferFixed + buffer.Buffer.StartIndex;
if (*(int *)bufferStart == FileHeader)
{
Version = *(ulong *)(bufferStart + sizeof(int) * 2);
FileInfo switchFile = new FileInfo(config.GetSwitchFileName);
if (switchFile.Exists)
{
FileStream switchFileStream = new FileStream(switchFile.FullName, FileMode.Open, FileAccess.ReadWrite, FileShare.Read, bufferPool.Size, FileOptions.None);
if (switchFileStream.Read(buffer.Buffer.Buffer, buffer.Buffer.StartIndex, fileHeaderSize) == fileHeaderSize && *(int *)bufferStart == FileHeader &&
*(ulong *)(bufferStart + sizeof(int) * 2) > Version)
{
fileStream.Dispose();
Version = *(ulong *)(bufferStart + sizeof(int) * 2);
fileStream = switchFileStream;
FileName = switchFile.FullName;
isSwitchFile = true;
}
}
if (Version > 0)
{
LoadData loadData = new LoadData {
Buffer = BufferLink.Head
};
int count = fileStream.Read(buffer.Buffer.Buffer, buffer.Buffer.StartIndex, buffer.Buffer.Length), index = 0, compressionDataSize;
long nextLength = (FileLength = fileStream.Length) - fileHeaderSize - count;
do
{
while (count >= sizeof(int) * 2)
{
byte *read = bufferStart + index;
if ((compressionDataSize = *(int *)read) < 0)
{
if (count >= (compressionDataSize = -compressionDataSize) + sizeof(int) * 2)
{
buffer.CompressionBuffer.StartIndex = *(int *)(read + sizeof(int));
AutoCSer.IO.Compression.DeflateDeCompressor.Get(buffer.Buffer.Buffer, buffer.Buffer.StartIndex + (index += sizeof(int) * 2), compressionDataSize, ref buffer.CompressionBuffer);
if (buffer.CompressionBuffer.Buffer != null)
{
fixed(byte *dataFixed = buffer.CompressionBuffer.GetFixedBuffer())
{
loadData.Set(buffer.CompressionBuffer.Buffer, buffer.CompressionBuffer.StartIndex, *(int *)(read + sizeof(int)), dataFixed);
if (!cache.Load(ref loadData))
{
throw new InvalidDataException();
}
}
index += compressionDataSize;
count -= compressionDataSize + sizeof(int) * 2;
buffer.CompressionBuffer.Free();
}
else
{
throw new InvalidDataException();
}
}
else if (count + nextLength >= compressionDataSize + sizeof(int) * 2)
{
if (compressionDataSize + sizeof(int) * 2 <= buffer.Buffer.StartIndex)
{
break;
}
if (bigBuffer.Length < compressionDataSize)
{
bigBuffer = new byte[Math.Max(compressionDataSize, bigBuffer.Length << 1)];
}
System.Buffer.BlockCopy(buffer.Buffer.Buffer, buffer.Buffer.StartIndex + (index + sizeof(int) * 2), bigBuffer, 0, count -= sizeof(int) * 2);
do
{
index = fileStream.Read(bigBuffer, count, compressionDataSize - count);
nextLength -= index;
count += index;
}while (count != compressionDataSize);
buffer.CompressionBuffer.StartIndex = *(int *)(read + sizeof(int));
AutoCSer.IO.Compression.DeflateDeCompressor.Get(bigBuffer, 0, compressionDataSize, ref buffer.CompressionBuffer);
if (buffer.CompressionBuffer.Buffer != null)
{
fixed(byte *dataFixed = buffer.CompressionBuffer.GetFixedBuffer())
{
loadData.Set(buffer.CompressionBuffer.Buffer, buffer.CompressionBuffer.StartIndex, *(int *)(read + sizeof(int)), dataFixed);
if (!cache.Load(ref loadData))
{
throw new InvalidDataException();
}
}
index = count = 0;
buffer.CompressionBuffer.Free();
}
else
{
throw new InvalidDataException();
}
}
else
{
endError(ref buffer.Buffer, nextLength, index, count);
return;
}
}
else if (count >= compressionDataSize + sizeof(int))
{
loadData.Set(buffer.Buffer.Buffer, buffer.Buffer.StartIndex + (index += sizeof(int)), compressionDataSize, bufferFixed);
if (!cache.Load(ref loadData))
{
throw new InvalidDataException();
}
index += compressionDataSize;
count -= compressionDataSize + sizeof(int);
}
else if (count + nextLength >= compressionDataSize + sizeof(int))
{
if (compressionDataSize + sizeof(int) <= buffer.Buffer.StartIndex)
{
break;
}
if (bigBuffer.Length < compressionDataSize)
{
bigBuffer = new byte[Math.Max(compressionDataSize, bigBuffer.Length << 1)];
}
System.Buffer.BlockCopy(buffer.Buffer.Buffer, buffer.Buffer.StartIndex + (index + sizeof(int)), bigBuffer, 0, count -= sizeof(int));
do
{
index = fileStream.Read(bigBuffer, count, compressionDataSize - count);
nextLength -= index;
count += index;
}while (count != compressionDataSize);
fixed(byte *dataFixed = bigBuffer)
{
loadData.Set(bigBuffer, 0, compressionDataSize, dataFixed);
if (!cache.Load(ref loadData))
{
throw new InvalidDataException();
}
}
index = count = 0;
}
else
{
endError(ref buffer.Buffer, nextLength, index, count);
return;
}
}
if (nextLength == 0)
{
if (count == 0)
{
fileStream.Seek(0, SeekOrigin.End);
IsDisposed = 0;
}
else
{
endError(ref buffer.Buffer, nextLength, index, count);
}
return;
}
if (count != 0)
{
System.Buffer.BlockCopy(buffer.Buffer.Buffer, buffer.Buffer.StartIndex + index, buffer.Buffer.Buffer, buffer.Buffer.StartIndex, count);
}
index = fileStream.Read(buffer.Buffer.Buffer, buffer.Buffer.StartIndex + count, buffer.Buffer.Length - count);
nextLength -= index;
count += index;
index = 0;
}while (true);
}
}
}
}
if (!config.IsMoveBakUnknownFile)
{
throw new InvalidDataException();
}
fileStream.Dispose();
AutoCSer.IO.File.MoveBak(FileName);
}
}
fileStream = new FileStream(FileName, createMode, FileAccess.Write, FileShare.Read, bufferPool.Size, FileOptions.None);
create(ref buffer.Buffer, Version);
}
finally
{
buffer.Free();
BufferLink.Head.Array.SetNull();
if (IsDisposed == 0)
{
fileFlushSeconds = AutoCSer.Threading.SecondTimer.CurrentSeconds + config.FileFlushSeconds;
AutoCSer.Threading.SecondTimer.InternalTaskArray.NodeLink.PushNotNull(this);
}
else if (fileStream != null)
{
fileStream.Dispose();
}
}
}
