public void NewlineIsExtractedAsAnInstruction()
{
var data = Environment.NewLine + "simple test" + Environment.NewLine + "string";
var colourControlItems = ColourControlSplitter.Split(data).Select(t => t.ToString());
var newLineControlItem = new ColourControlItem(instructions: new [] {new ColourControlItem.ControlInstruction(ColourControlItem.ControlCode.NewLine)});
var expected = new []
{
newLineControlItem.ToString(),
new ColourControlItem("simple test").ToString(),
newLineControlItem.ToString(),
new ColourControlItem("string").ToString(),
};
Assert.That(colourControlItems, Is.EqualTo(expected));
}
private void ProcessItem(ColourControlItem colourControlItem)
{
if (colourControlItem.Text != null)
WriteText(colourControlItem);
else
{
foreach (var instruction in colourControlItem.Instructions)
{
switch (instruction.Code)
{
case ColourControlItem.ControlCode.SetBackground:
_consoleOutInterface.Background = instruction.Arg;
break;
case ColourControlItem.ControlCode.SetForeground:
_consoleOutInterface.Foreground = instruction.Arg;
break;
case ColourControlItem.ControlCode.NewLine:
if (!_lastWriteWasPassiveNewLine)
_consoleOutInterface.NewLine();
else
_lastWriteWasPassiveNewLine = false;
break;
case ColourControlItem.ControlCode.Push:
_colourStack.Push(new ColourState(_consoleOutInterface.Foreground, _consoleOutInterface.Background));
break;
case ColourControlItem.ControlCode.Pop:
var popped = _colourStack.Pop();
_consoleOutInterface.Foreground = popped.ForegroundColour;
_consoleOutInterface.Background = popped.BackgroundColour;
break;
}
}
}
}
private void WriteTextWithPrefix(ColourControlItem colourControlItem)
{
var text = colourControlItem.Text;
var remaining = text.Length;
var textPos = 0;
do
{
if (_consoleOutInterface.CursorLeft == 0)
{
var currentFG = _consoleOutInterface.Foreground;
var currentBG = _consoleOutInterface.Background;
_consoleOutInterface.Foreground = _prefixForeground;
_consoleOutInterface.Background = _prefixBackground;
_consoleOutInterface.Write(PrefixText);
_consoleOutInterface.Foreground = currentFG;
_consoleOutInterface.Background = currentBG;
}
var available = _consoleOutInterface.BufferWidth - _consoleOutInterface.CursorLeft;
var section = remaining > available ? text.Substring(textPos, available) : text.Substring(textPos);
_consoleOutInterface.Write(section);
textPos += section.Length;
remaining -= section.Length;
} while (remaining > 0);
}
private void WriteText(ColourControlItem colourControlItem)
{
var currentLine = _consoleOutInterface.CursorTop;
if (PrefixText != null)
WriteTextWithPrefix(colourControlItem);
else
_consoleOutInterface.Write(colourControlItem.Text);
_lastWriteWasPassiveNewLine = (colourControlItem.Text.Length > 0 &&
_consoleOutInterface.CursorLeft == 0);
}
private void ProcessColourControlItem(ColourControlItem colourControlItem)
{
if (colourControlItem.PrefixAffinity && string.IsNullOrEmpty(colourControlItem.Text))
{
_cachedPrefixInstructions.AddRange(colourControlItem.Instructions);
StoreCurrentIfPresent();
return;
}
if (!string.IsNullOrEmpty(colourControlItem.Text))
{
StoreCurrentIfPresent();
var splitWords = SplitWords(colourControlItem.Text, _tabLength);
if (splitWords.Any())
{
splitWords.First().AddPrefixInstructions(_cachedPrefixInstructions);
_cachedPrefixInstructions.Clear();
}
if (splitWords.Length > 1)
Words.AddRange(splitWords.Take(splitWords.Length - 1));
_current = splitWords[splitWords.Length - 1];
}
else if (InstructionIsNewLineOnly(colourControlItem))
{
StoreCurrentIfPresent();
_current = new SplitWord(0, 0, string.Empty);
_current.AddPrefixInstructions(_cachedPrefixInstructions);
_current.AddSuffixInstructions(colourControlItem.Instructions);
_cachedPrefixInstructions.Clear();
}
else
AddSuffixInstructionsToCurrent(colourControlItem.Instructions);
}
private bool InstructionIsNewLineOnly(ColourControlItem item)
{
return item.Instructions.All(i => i.Code == ColourControlItem.ControlCode.NewLine);
}
