public static IEnumerable <Entry> Parse(TextReader reader)
{
string line;
var radical = default(Radical);
var result = new List <Entry>();
List <int> kanji = null;
while ((line = reader.ReadLine()) != null)
{
if (line.StartsWith("#", StringComparison.Ordinal))
{
continue;
}
if (line.StartsWith("$", StringComparison.Ordinal))
{
if (kanji != null)
{
result.Add(new Entry(radical, kanji));
}
kanji = new List <int>();
line = line.Remove(0, 2);
var components = line.Split(' ');
int codePoint = char.ConvertToUtf32(components[0].Trim(), 0);
int strokeCount = int.Parse(components[1]);
radical = new Radical(codePoint, strokeCount);
}
else
{
if (kanji == null)
{
throw new InvalidDataException();
}
foreach (var codePoint in AsCodePoints(line.Trim()))
{
kanji.Add(codePoint);
}
}
}
if (kanji?.Count != 0)
{
result.Add(new Entry(radical, kanji));
}
return(result
.GroupBy(e => e.Radical.CodePoint)
.Select(g =>
{
var codePoint = g.Key;
var strokeCount = g.First().Radical.StrokeCount;
var k = g.SelectMany(e => e.KanjiCodePoints).ToList();
return new Entry(new Radical(codePoint, strokeCount), k);
}));
}
public Entry(Radical radical, IReadOnlyCollection <int> kanjiCodePoints)
{
Radical = radical;
KanjiCodePoints = kanjiCodePoints;
}
