protected TuneConverter()
{
DurationConverter = new DurationConverter();
ScaleConverter = new ScaleConverter();
PitchConverter = new PitchConverter();
}
protected override Tune InternalParse(string s)
{
var parts = s.Split(TuneCommandDelimiter);
if (parts.Count() < 2 || parts.Count() > 3)
{
throw new FormatException();
}
var name = parts[0];
string notes;
var bpm = DefaultBpm.ToString();
var defaultDuration = DefaultDuration;
var defaultScale = DefaultScale;
if (parts.Count() == 3)
{
notes = parts[2].ToUpperInvariant();
var commandSection = parts[1];
var bpmString = GetFirstValueGroup(commandSection, PatternDefaultBpm);
if (!string.IsNullOrEmpty(bpmString))
{
bpm = bpmString;
}
var durationString = GetFirstValueGroup(commandSection, PatternDefaultDuration);
if (!string.IsNullOrEmpty(durationString))
{
defaultDuration = durationString;
}
var scaleString = GetFirstValueGroup(commandSection, PatternDefaultScale);
if (!string.IsNullOrEmpty(scaleString))
{
defaultScale = scaleString;
}
}
else
{
notes = parts[1].ToUpperInvariant();
}
var tuneElementList = new List <TuneElement>();
var regexNotes = new Regex(TuneElementPattern);
var matches = regexNotes.Matches(notes);
foreach (Match m in matches)
{
var durationString = string.IsNullOrEmpty(m.Groups[1].Value) ? defaultDuration : m.Groups[1].Value;
var pitchString = m.Groups[2].Value;
var dotted = m.Groups[3].Value == ".";
var scaleString = string.IsNullOrEmpty(m.Groups[4].Value) ? defaultScale : m.Groups[4].Value;
var duration = DurationConverter.Parse(durationString);
var scale = ScaleConverter.Parse(scaleString);
TuneElement tuneElement;
if (pitchString == Pause)
{
tuneElement = new Pause(duration);
}
else
{
var pitch = PitchConverter.Parse(pitchString);
tuneElement = new Note(pitch, scale, duration);
}
tuneElement.Dotted = dotted;
tuneElementList.Add(tuneElement);
}
var tune = new Tune(tuneElementList, Convert.ToInt32(bpm));
tune.Name = name;
return(tune);
}
