public static void RunCommandInterpreter(VirtualMachine vm, byte mode)
{
var commandProcessor = vm.Dos.GetCommandProcessor();
if (commandProcessor.HasBatch)
{
var result = commandProcessor.RunNextBatchStatement();
if (result == CommandResult.Exit)
{
vm.Processor.Flags.Carry = true;
}
else if (result == CommandResult.Continue && commandProcessor.HasBatch)
{
vm.Processor.EIP -= 3;
}
return;
}
if (mode == 0)
{
// mode 0 = process args if any specified
var args = vm.CurrentProcess.CommandLineArguments;
int index = args.IndexOf("/c", StringComparison.OrdinalIgnoreCase);
if (index >= 0)
{
var actualArgs = args.AsSpan().Slice(2).Trim();
if (StatementParser.IsBatchFile(actualArgs))
{
StatementParser.Split(actualArgs, out var batchFileName, out var batchArgs);
vm.Processor.Flags.Carry = !commandProcessor.BeginBatch(batchFileName, batchArgs.TrimStart());
}
else
{
ParseCommand(vm, actualArgs);
vm.Processor.Flags.Carry = true;
}
}
else
{
args = args.Trim();
if (!string.IsNullOrEmpty(args))
{
ParseCommand(vm, args);
vm.Processor.Flags.Carry = true;
}
else
{
vm.Processor.Flags.Carry = false;
}
}
}
else if (mode == 1)
{
// mode 1 = write command prompt
vm.Console.Write(vm.FileSystem.WorkingDirectory.ToString() + ">");
}
else
{
// mode 2 = process input from mode 1
int stringLength = vm.PhysicalMemory.GetByte(vm.Processor.DS, (ushort)vm.Processor.DX + 1u);
var input = vm.PhysicalMemory.GetString(vm.Processor.DS, (ushort)vm.Processor.DX + 2u, stringLength);
vm.Console.WriteLine();
vm.Processor.Flags.Carry = ParseCommand(vm, input);
}
}
