public FileNode (MonoBrick.NXT.BrickFile file)
{
this.file = file;
switch(file.FileType){
case FileType.Datalog:
type = "Datalog";
break;
case FileType.Firmware:
type = "Firmware";
break;
case FileType.Graphics:
type = "Graphics";
break;
case FileType.OnBrickProgram:
type = "On-Brick";
break;
case FileType.Program:
type = "Program";
break;
case FileType.Sound:
type = "Sound";
break;
case FileType.TryMeProgram:
type = "Try-Me";
break;
case FileType.Unknown:
type = "Unknown";
break;
default:
type = "Unknown";
break;
}
}
/// <summary>
/// Downloads a file from the brick
/// </summary>
/// <param name='destinationFileName'>
/// Destination file name
/// </param>
/// <param name='brickFile'>
/// Brick file to download
/// </param>
public void DownloadFile(string destinationFileName, BrickFile brickFile){
DownloadFile(destinationFileName, brickFile.Name);
}
/// <summary>
/// Deletes file.
/// </summary>
/// <param name='file'>
/// File to delete
/// </param>
public void DeleteFile(BrickFile file){
DeleteFile(file.Name);
}
/// <summary>
/// Closes the file.
/// </summary>
/// <param name='file'>
/// File to close
/// </param>
public void CloseFile(BrickFile file){
var command = new Command(CommandType.SystemCommand, CommandByte.Close, true);
command.Append(file.Handle);
Connection.Send(command);
var reply = connection.Receive();
if(reply.HasError && reply.ErrorCode != (byte)BrickError.HandleAlreadyClosed){
Error.ThrowException(reply);
}
//compare the handle numbers
}
/// <summary>
/// Read a specefic number of bytes from a file
/// </summary>
/// <param name='file'>
/// The file to read from
/// </param>
/// <param name='bytesToRead'>
/// Bytes to read
/// </param>
public byte[] Read(BrickFile file, UInt16 bytesToRead){
var command = new Command(CommandType.SystemCommand, CommandByte.Read, true);
command.Append(file.Handle);
command.Append(bytesToRead);
connection.Send(command);
var reply = connection.Receive();
if(reply.HasError){
CloseFile(file);
Error.ThrowException(reply);
}
//UInt16 bytesRead = reply.GetUInt16(4); //use this for some error checking
byte[] result = reply.GetData(6);
if(OnBytesRead != null)
OnBytesRead(result.Length);
return result;
}
/// <summary>
/// Read all bytes from a file
/// </summary>
/// <param name='file'>
/// The file to read from
/// </param>
public byte[] Read(BrickFile file){
byte[] data = new byte[file.Size];
byte[] newData = null;
int bytesRead = 0;
while(bytesRead < file.Size){
if((file.Size - bytesRead) >= MaxBytesRead){
newData = Read(file,MaxBytesRead);
Array.Copy(newData,0,data,bytesRead,MaxBytesRead);
if(newData.Length != MaxBytesRead){
CloseFile(file);
throw new BrickException(BrickError.UndefinedFileError);
}
}
else{
UInt32 bytesToRead = ((UInt32)file.Size - (UInt32)bytesRead);
newData = Read(file,(ushort)bytesToRead);
Array.Copy(newData,0,data,bytesRead,bytesToRead);
if(newData.Length != bytesToRead){
CloseFile(file);
throw new BrickException(BrickError.UndefinedFileError);
}
}
bytesRead = bytesRead + newData.Length;
}
return data;
}
private int Write(BrickFile file, byte[] data, int offset, int length){
var command = new Command(CommandType.SystemCommand, CommandByte.Write,true);
command.Append(file.Handle);
command.Append(data, offset, length);
connection.Send(command);
//Console.WriteLine(file.Size);
//command.Print();
var reply = connection.Receive();
Error.CheckForError(reply,6, delegate(){CloseFile(file);});
int result = (int) reply.GetUInt16(4);//The number of bytes written
if(OnBytesWritten != null)
OnBytesWritten(result);
return result;
}
/// <summary>
/// Write a byte array to a file
/// </summary>
/// <param name='file'>
/// The file
/// </param>
/// <param name='data'>
/// Data to write
/// </param>
public int Write(BrickFile file, byte[] data){
int bytesWritten = 0;
while(bytesWritten < data.Length){
if((data.Length - bytesWritten) >= MaxBytesWrite){
if(Write(file,data,bytesWritten,MaxBytesWrite) != MaxBytesWrite){
CloseFile(file);
throw new BrickException(BrickError.UndefinedFileError);
}
bytesWritten += MaxBytesRead;
}
else{
int bytesToWrite = (data.Length - bytesWritten);
if(Write(file,data,bytesWritten,bytesToWrite) != bytesToWrite){
CloseFile(file);
throw new BrickException(BrickError.UndefinedFileError);
}
bytesWritten += bytesToWrite;
}
}
return bytesWritten;
}
private BrickFile FindNext(BrickFile file){
var command = new Command(CommandType.SystemCommand,CommandByte.FindNext,true);
command.Append(file.Handle);
connection.Send(command);
var reply = connection.Receive();
if(reply.HasError && reply.ErrorCode != (byte)BrickError.FileNotFound){
Error.ThrowException(reply);
}
if(reply.ErrorCode == (byte)BrickError.FileNotFound){
return new BrickFile();//empty file
}
if(reply.Length != 28){
throw new BrickException(BrickError.WrongNumberOfBytes);
}
BrickFile newFile = new BrickFile(reply.GetString(4),reply[3],reply.GetUInt32(24));
try{
CloseFile(newFile);
}
catch(MonoBrickException e){
if(e.ErrorCode != (byte)BrickError.HandleAlreadyClosed)
Error.ThrowException(e.ErrorCode);
}
return newFile;
}
