void rcallback(IntPtr streamPointer, IntPtr size)
{
long nread = size.ToInt64();
if (nread == 0)
{
return;
}
else if (nread < 0)
{
if (UVException.Map((int)nread) == UVErrorCode.EOF)
{
Close(Complete);
}
else
{
OnError(Ensure.Map((int)nread));
Close();
}
}
else
{
OnData(ByteBufferAllocator.Retrieve(size.ToInt32()));
}
}
protected void OnError(UVException exception)
{
if (Error != null)
{
Error(exception);
}
}
internal static Exception Map(uv_err_code error, string name = null)
{
if (error == uv_err_code.UV_OK)
{
return(null);
}
switch (error)
{
case uv_err_code.UV_EINVAL:
return(new ArgumentException(UVException.StringError(error)));
case uv_err_code.UV_ENOENT:
var path = (name == null ? System.IO.Directory.GetCurrentDirectory() : Path.Combine(System.IO.Directory.GetCurrentDirectory(), name));
return(new System.IO.FileNotFoundException(string.Format("Could not find file '{0}'.", path), path));
case uv_err_code.UV_EADDRINUSE:
return(new SocketException(10048));
case uv_err_code.UV_EADDRNOTAVAIL:
return(new SocketException(10049));
case uv_err_code.UV_ECONNREFUSED:
return(new SocketException(10061));
case uv_err_code.UV_ENOTSUP:
return(new NotSupportedException());
default:
return(new UVException(error));
}
}
internal static Exception Map(int systemErrorCode, string name = null)
{
// no error, just return null
if (!(systemErrorCode < 0))
{
return(null);
}
// map some error codes
var errorCode = UVException.Map(systemErrorCode);
switch (errorCode)
{
case UVErrorCode.EINVAL:
return(new ArgumentException(UVException.StringError(systemErrorCode)));
case UVErrorCode.ENOENT:
var path = (name == null ? System.IO.Directory.GetCurrentDirectory() : Path.Combine(System.IO.Directory.GetCurrentDirectory(), name));
return(new System.IO.FileNotFoundException(string.Format("Could not find file '{0}'.", path), path));
case UVErrorCode.ENOTSUP:
return(new NotSupportedException());
default:
break;
}
// everything else is a UVException
return(new UVException(systemErrorCode));
}
public static void Read(Loop loop, string path, Action <Exception, UVDirectoryEntity[]> callback)
{
var fsr = new FileSystemRequest();
fsr.Callback = (ex) => {
if (ex != null)
{
callback(ex, null);
return;
}
var list = new List <UVDirectoryEntity>();
uv_dirent_t entity;
while (UVException.Map(uv_fs_scandir_next(fsr.Handle, out entity)) != UVErrorCode.EOF)
{
list.Add(new UVDirectoryEntity(entity));
}
Ensure.Success(ex, callback, list.ToArray());
};
int r = uv_fs_scandir(loop.NativeHandle, fsr.Handle, path, 0, FileSystemRequest.CallbackDelegate);
Ensure.Success(r);
}
protected void OnError(UVException exception)
{
if (Error != null) {
Error(exception);
}
}