[SuppressMessage("ReSharper", "PossibleNullReferenceException")] void ParseMapFile(string filename)
{
var expressionMapRegEx = new Regex(@"(Map|Base|RootKey|BaseChannel|Art|Remotes|StdRemotes|KeyMode)\s*(\[[^]]*\])?:\s*(?:([^,]+),?)+");
var defaultRootKey = Array.IndexOf(NoteNames, "C0");
var lines = File.ReadAllLines(filename).Where(s => s != "");
ExpressionMap map = null;
var rootKey = defaultRootKey;
var keyMode = KeyModes.Chromatic;
var keyStep = 0;
foreach (var line in lines)
{
var match = expressionMapRegEx.Matches(line)[0];
Debug.Assert(match.Groups[1].Captures[0].Value.ToLower() == "map" || map != null, "Must declare map block first.");
switch (match.Groups[1].Captures[0].Value.ToLower())
{
case "map":
map?.AssignRemotes();
var mapName = match.Groups[3].Captures[0].Value;
ExpressionMaps[mapName] = map = new ExpressionMap(mapName, defaultRootKey);
rootKey = defaultRootKey;
keyMode = KeyModes.Chromatic;
keyStep = 0;
break;
case "base":
var baseMap = ExpressionMaps[match.Groups[3].Captures[0].Value];
map = ExpressionMaps[map.Name] = new ExpressionMap(map.Name, baseMap);
rootKey = map.RootKey;
keyStep = 0;
keyMode = KeyModes.Chromatic; // note the key node is not inherited, and the key step restarts at zero.
break;
case "rootkey":
rootKey = Array.IndexOf(NoteNames, match.Groups[3].Captures[0].Value);
map.ChangeRootKey(rootKey);
break;
case "moverootkey":
rootKey = Array.IndexOf(NoteNames, match.Groups[3].Captures[0].Value);
map.MoveRootKey(rootKey);
break;
case "keymode":
keyMode = match.Groups[3].Captures[0].Value.ToLower() == "diatonic" ? KeyModes.Diatonic : KeyModes.Chromatic;
break;
case "basechannel":
map.BaseChannel = int.Parse(match.Groups[3].Captures[0].Value) - 1;
break;
case "stdremotes":
map.StandardRemoteAssignments = match.Groups[3].Captures[0].Value.ToLower() == "true";
break;
case "art":
if (map.InheritedArticulations)
{
map.Articulations.Clear();
map.InheritedArticulations = false;
}
var key = rootKey;
map.Remotes.Clear();
var defaultAttributesText = match.Groups[2].Captures.Count > 0 ? ("Default" + match.Groups[2].Captures[0].Value) : "";
foreach (Capture articulationEntry in match.Groups[3].Captures)
{
var articulation = new Articulation("", -1, -1, true, true, -1, -1);
if (defaultAttributesText != "")
{
articulation = ParseArticulationAttributes(articulation, defaultAttributesText, key);
}
articulation = ParseArticulationAttributes(articulation, articulationEntry.Value, key);
if (articulation.Keyswitched)
{
key += keyMode == KeyModes.Diatonic ? DiatonicSteps[keyStep++] : 1;
}
if (articulation.Name.ToLower() != "none")
{
map.Articulations.Add(articulation);
if (articulation.MuteCC != -1)
{
Debug.Assert(map.MuteCC == -1);
map.MuteCC = articulation.MuteCC;
}
}
}
break;
case "remotes":
map.Remotes.Clear();
foreach (Capture remoteEntry in match.Groups[3].Captures)
{
var remoteName = remoteEntry.Value.ToLower();
if (remoteName.ToLower() == "none")
{
map.Remotes.Add(new Articulation("None", -1, -1, true, false, -1, -1));
}
else
{
var articulationNames = map.Articulations.Select(c => c.Name.ToLower()).ToArray();
var articulation = map.Articulations.First(c => c.Name.ToLower().StartsWith(remoteName, StringComparison.Ordinal));
map.Remotes.Add(articulation);
}
}
break;
default:
Debug.Assert(false);
break;
}
}
map?.AssignRemotes();
}