public bool Compare(PgnGameResult result, string comparison)
{
if (string.IsNullOrEmpty(comparison))
{
return(true);
}
comparison = comparison.ToLower();
return(result == PgnGameResult.BlackWins && new[] { "0-1", "b", "black" }.Any(c => c.Equals(comparison)) ||
result == PgnGameResult.WhiteWins && new[] { "1-0", "w", "white" }.Any(c => c.Equals(comparison)) ||
result == PgnGameResult.Draw && new[] { "1/2-1/2", "d", "draw" }.Any(c => c.Equals(comparison))
);
}
public static string RevertToText(this PgnGameResult pgnR)
{
switch (pgnR)
{
case PgnGameResult.Unknown:
return("? ?");
case PgnGameResult.Draw:
return("1/2-1/2");
case PgnGameResult.WhiteWins:
return("1-0");
case PgnGameResult.BlackWins:
return("0-1");
default:
throw new ArgumentOutOfRangeException(nameof(pgnR), pgnR, null);
}
}
public static IEnumerable <PgnTurn> Parse(string text, out PgnGameResult result)
{
var moveText = text.Replace("\r", " ").Replace("\n", " ");
var tokens = new Stack <string>(moveText.Split(new[] { ' ', '\t', '.' }).Where(s => s.Trim().Any()).Reverse());
var turns = new List <PgnTurn>();
PgnMove white = null;
PgnMove black = null;
var annotationToken = false;
var annotation = "";
var turnIdx = 0;
result = PgnGameResult.Unknown;
while (tokens.Any())
{
// Number, '{}', Alpha, PgnGameResult
var token = tokens.Pop();
var tokenType = PgnTurnTokenParser.GetTokenType(token);
if (annotationToken && tokenType != PgnTurnTokenTypes.AnnotationEnd)
{
annotation = string.IsNullOrEmpty(annotation)
? token
: $"{annotation} {token}";
continue;
}
switch (tokenType)
{
case PgnTurnTokenTypes.AnnotationStart:
if (token.Length > 1)
{
tokens.Push(token.Substring(1));
}
annotationToken = true;
break;
case PgnTurnTokenTypes.AnnotationEnd:
if (token.Length > 1)
{
tokens.Push("}");
tokens.Push(token.Substring(0, token.Length - 1));
}
else
{
annotationToken = false;
if (white != null && black == null)
{
white.Annotation = annotation;
}
else if (black != null)
{
black.Annotation = annotation;
}
annotation = null;
}
break;
case PgnTurnTokenTypes.TurnStart:
{
if (white != null && black != null)
{
turns.Add(new PgnTurn(turnIdx, white, black));
white = black = null;
annotation = null;
}
turnIdx = token.ToInt();
break;
}
case PgnTurnTokenTypes.Notation when white == null:
white = new PgnMove(token, annotation);
break;
case PgnTurnTokenTypes.Notation:
black = new PgnMove(token, annotation);
break;
case PgnTurnTokenTypes.GameResult:
result = PgnTurnTokenParser.ParseResult(token);
turns.Add(new PgnTurn(turnIdx, white, black));
white = black = null;
annotation = null;
break;
default:
throw new Exception($"Unexpected tokenType '{tokenType}'");
}
}
if (white != null)
{
if (turns.All(t => t.Turn != turnIdx))
{
turns.Add(new PgnTurn(turnIdx, white, black));
}
}
return(turns);
}
