internal static FileStreamStrategy ChooseStrategy(string path, FileMode mode, FileAccess access, FileShare share, int bufferSize, FileOptions options)
{
if (UseLegacyStrategy)
{
return(new LegacyFileStreamStrategy(path, mode, access, share, bufferSize, options));
}
WindowsFileStreamStrategy strategy = (options & FileOptions.Asynchronous) != 0
? new AsyncWindowsFileStreamStrategy(path, mode, access, share, options)
: new SyncWindowsFileStreamStrategy(path, mode, access, share, options);
return(EnableBufferingIfNeeded(strategy, bufferSize));
}
internal static FileStreamStrategy ChooseStrategy(SafeFileHandle handle, FileAccess access, int bufferSize, bool isAsync)
{
if (UseLegacyStrategy)
{
return(new LegacyFileStreamStrategy(handle, access, bufferSize, isAsync));
}
WindowsFileStreamStrategy strategy = isAsync
? new AsyncWindowsFileStreamStrategy(handle, access)
: new SyncWindowsFileStreamStrategy(handle, access);
return(EnableBufferingIfNeeded(strategy, bufferSize));
}
// TODO: we might want to consider strategy.IsPipe here and never enable buffering for async pipes internal static FileStreamStrategy EnableBufferingIfNeeded(WindowsFileStreamStrategy strategy, int bufferSize) => bufferSize == 1 ? strategy : new BufferedFileStreamStrategy(strategy, bufferSize);