internal static void CloseHandle(FileHandlingCacheEntry e)
{
try
{
e.fs.RealClose();
e.fs=null;
}
catch
{
}
FileHandlingCache.Remove(e);
}
internal static FileStream NewFileStream(
string path,
FileMode mode,
FileAccess access,
FileShare share
)
{
// TextWriter tw = new StreamWriter("filelog.txt",true);
// tw.WriteLine("Open "+path);
// tw.Close();
// return new FileStream2(path,mode,access,share);
foreach(FileHandlingCacheEntry e in FileHandlingCache)
{
if(e.filename==path)
{
if((e.fm==mode)&&(e.fs.CanSeek))
{
e.uses++;
e.fs.Position=0;
return e.fs;
}
else
{
CloseHandle(e);
break;
}
}
}
if(FileHandlingCache.Count>Limit)
{
int trys = Limit-FileHandlingCache.Count;
for(int t=0;t<trys;t++)
{
FileHandlingCacheEntry se = null;
foreach(FileHandlingCacheEntry e in FileHandlingCache)
{
if(e.uses==0)
{
se=e;
break;
}
}
if(se!=null)
CloseHandle(se);
}
}
FileStream2 fs = new FileStream2(path,mode,FileAccess.ReadWrite,FileShare.None);
FileHandlingCacheEntry en = new FileHandlingCacheEntry(path,fs,mode);
fs.e=en;
FileHandlingCache.Add( en );
return fs;
}