public void TestNext()
{
var dosKey = new Doskey(10);
dosKey.Record("in1");
dosKey.Record("in2");
dosKey.Record("in3");
var record1 = dosKey.TryGetPrev();
var record2 = dosKey.TryGetPrev();
var record3 = dosKey.TryGetPrev();
var record4 = dosKey.TryGetPrev();
var record5 = dosKey.TryGetNext();
var record6 = dosKey.TryGetNext();
var record7 = dosKey.TryGetNext();
var record8 = dosKey.TryGetNext();
Assert.AreEqual("in3", record1);
Assert.AreEqual("in2", record2);
Assert.AreEqual("in1", record3);
Assert.AreEqual(null, record4);
Assert.AreEqual("in2", record5);
Assert.AreEqual("in3", record6);
Assert.AreEqual(null, record7);
Assert.AreEqual(null, record8);
}
private string[] _HandlerInput(Stack <char> chars)
{
var keyInfo = System.Console.ReadKey(true);
// Ignore if Alt or Ctrl is pressed.
if ((keyInfo.Modifiers & ConsoleModifiers.Alt) == ConsoleModifiers.Alt)
{
return(null);
}
if ((keyInfo.Modifiers & ConsoleModifiers.Control) == ConsoleModifiers.Control)
{
return(null);
}
// Ignore if KeyChar value is \u0000.
// Ignore tab key.
if (keyInfo.Key == ConsoleKey.DownArrow)
{
var message = _Doskey.TryGetNext();
if (message != null)
{
_ResetLine(chars, message);
}
}
if (keyInfo.Key == ConsoleKey.UpArrow)
{
var message = _Doskey.TryGetPrev();
if (message != null)
{
_ResetLine(chars, message);
}
}
if (keyInfo.KeyChar == '\u0000')
{
return(null);
}
if (keyInfo.Key == ConsoleKey.Tab)
{
return(null);
}
if (keyInfo.Key == ConsoleKey.Escape)
{
return(null);
}
if (keyInfo.Key == ConsoleKey.Backspace)
{
if (chars.Count() > 0)
{
chars.Pop();
_Viewer.Write("\b \b");
}
}
else if (keyInfo.Key == ConsoleKey.Enter)
{
var commands = new string(chars.Reverse().ToArray());
commands = commands.Trim();
if (commands.Length > 0)
{
chars.Clear();
_Viewer.Write("\n");
_Doskey.Record(commands);
return(commands.Split(
new[]
{
' '
},
StringSplitOptions.RemoveEmptyEntries));
}
return(null);
}
else
{
chars.Push(keyInfo.KeyChar);
_Viewer.Write(keyInfo.KeyChar.ToString());
}
return(null);
}
public void TestPrevLimit()
{
var dosKey = new Doskey(2);
dosKey.Record("in1");
dosKey.Record("in2");
dosKey.Record("in3");
var record1 = dosKey.TryGetPrev();
var record2 = dosKey.TryGetPrev();
var record3 = dosKey.TryGetPrev();
var record4 = dosKey.TryGetPrev();
Assert.AreEqual("in3", record1);
Assert.AreEqual("in2", record2);
Assert.AreEqual(null, record3);
Assert.AreEqual(null, record4);
}
