/// <summary>
/// 创建新的存储文件
/// </summary>
private void CreateNewStorageFile()
{
_log.Debug("Split limit reached = " + _datawrite.Length);
int i = _files.Count;
// close files
FlushClose(_datawrite);
FlushClose(_dataread);
long start = 0;
if (i > 0)
{
start = _lastsplitfile.uptolength; // last file offset
}
// rename mgdat to mgdat0000n
File.Move(_filename, _filename + i.ToString(_splitfileExtension));
FileStream file = new FileStream(_filename + i.ToString(_splitfileExtension), FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
SplitFile sf = new SplitFile();
sf.start = start;
sf.uptolength = _lastWriteOffset;
sf.file = file;
_files.Add(sf);
_uptoindexes.Add(sf.uptolength);
_lastsplitfile = sf;
// new mgdat file
_datawrite = new FileStream(_filename, FileMode.CreateNew, FileAccess.ReadWrite, FileShare.ReadWrite);
_dataread = new FileStream(_filename, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
_log.Debug("New storage file created, count = " + _files.Count);
}
/// <summary>
/// 加载拆分的文件
/// </summary>
/// <param name="filename"></param>
private void LoadSplitFiles(string filename)
{
_log.Debug("Loading split files...");
_lastWriteOffset = 0;
for (int i = 0; ; i++)
{
string _filename = filename + i.ToString(_splitfileExtension);
if (File.Exists(_filename) == false)
{
break;
}
FileStream file = new FileStream(_filename, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
SplitFile sf = new SplitFile();
sf.start = _lastWriteOffset;
_lastWriteOffset += file.Length;
sf.file = file;
sf.uptolength = _lastWriteOffset;
_files.Add(sf);
_uptoindexes.Add(sf.uptolength);
}
_lastsplitfile = _files[_files.Count - 1];
_log.Debug("Number of split files = " + _files.Count);
}