/// <summary>
/// Write a DragonDos file to a Dragon virtual tape in the CAS format. If the CAS file already exists, write the
/// file to the end of the virtual tape.
/// </summary>
/// <param name="file">DragonDos file.</param>
/// <param name="tapeFilename">Name of the CAS file.</param>
/// <param name="ai">Additional arguments: Optional name of file within virtual tape container.</param>
private void SaveToCasFile(DragonDosFile file, string tapeFilename, IEnumerator<string> ai)
{
var localFilename = ai.MoveNext() ? ai.Current : file.FileInfo.Name;
IFile dragonFile;
switch (file.FileType)
{
case DragonDosFileType.MachineCode:
dragonFile = DragonFile.CreateMachineCodeFile(localFilename, file.GetData(), file.LoadAddress, file.StartAddress, false, false);
break;
case DragonDosFileType.Basic:
if (ascii)
{
var basicTokenizer = new DragonBasicTokenizer(DragonBasicDialect.DragonDos);
var basicText = basicTokenizer.DecodeToBytes(file.GetData());
dragonFile = DragonFile.CreateBasicFile(localFilename, basicText, true, true);
}
else
dragonFile = DragonFile.CreateBasicFile(localFilename, file.GetData(), false, false);
break;
default:
dragonFile = DragonFile.CreateDataFile(localFilename, file.GetData(), false, false);
break;
}
using (var tape = new DragonTape(new CasTape(new FileStream(tapeFilename, FileMode.Append))))
{
tape.WriteFile(dragonFile);
}
}
/// <summary>
/// Read a file from a virtual Dragon cassette and return the corresponding DragonDosFile
/// object.
/// </summary>
/// <param name="tapeFilename">Name of the virtual Dragon tape.</param>
/// <param name="ai">Additional parameters: Filename</param>
/// <returns></returns>
private DragonDosFile ReadLocalCasFile(string tapeFilename, IEnumerator<string> ai)
{
var filename = ai.MoveNext() ? ai.Current : null;
using (var tape = new DragonTape(new CasTape(new FileStream(tapeFilename, FileMode.Open))))
{
var file = (DragonFile) tape.ReadFile(filename);
switch (file.FileType)
{
case DragonFileType.Basic:
return DragonDosFile.CreateBasicFile(file.GetData());
case DragonFileType.MachineCode:
return DragonDosFile.CreateMachineCodeFile(file.GetData(), file.LoadAddress, file.StartAddress);
case DragonFileType.Data:
return DragonDosFile.CreateDataFile(file.GetData());
default:
throw new InvalidFileTypeException();
}
}
}