public WordVM(WordInfo wordInfo, IKanjiProperties lang, IKanaProperties kanaProperties, IRelated related)
{
var s = wordInfo.RawWord;
StringForm = s;
codePoints.AddRange(s.AsCodePoints().Select(rawCp =>
{
var cp = CodePoint.FromInt(rawCp);
var vm = new CodePointVM(
cp,
related.FindRelated(cp).SelectMany(g => g),
cp is Kanji k
? lang.LookupRadicalsByKanji(k).ValueOr(Enumerable.Empty <CodePoint>())
: Enumerable.Empty <CodePoint>(),
cp is Kana kana ? kanaProperties.LookupRomaji(kana.ToString()) : null);
return(vm);
}));
WordInfo = wordInfo;
}
public string ToRomaji(string input)
{
var words = mecab.ParseToEntries(input)
.Where(entry => entry.IsRegular)
.Select(entry => entry.Pronunciation ?? entry.SurfaceForm)
.ToList();
bool first = true;
var sb = new StringBuilder();
foreach (var(word, nextWord) in Utility.Utils.EnumerableExt.Zip(words, words.Skip(1).Concat(EnumerableExt.OfSingle(""))))
{
if (!first)
{
sb.Append(" ");
}
first = false;
for (int i = 0; i < word.Length; ++i)
{
var c = word[i];
var hasNext = i + 1 < word.Length;
var n = hasNext ? word[i + 1] : '\0';
if (c == 'ー' && i > 0)
{
var lastLetter = sb[sb.Length - 1];
if (lastLetter == 'o')
{
lastLetter = 'u';
}
sb.Append(lastLetter);
continue;
}
if (c == 'っ' || c == 'ッ')
{
var next = hasNext ? n : nextWord.ElementAtOrDefault(0);
if (next != '\0')
{
var r = props.LookupRomaji(next.ToString());
sb.Append(r[0]);
continue;
}
}
if ((c == 'ん' || c == 'ン') &&
"あいうえおアイウエオ".Contains(n.ToString()))
{
sb.Append(props.LookupRomaji(c.ToString()) ?? c.ToString());
sb.Append('\'');
sb.Append(props.LookupRomaji(n.ToString()) ?? n.ToString());
++i;
continue;
}
var romaji = props.LookupRomaji(new string(new[] { c, n }));
if (romaji != null)
{
sb.Append(romaji);
i++;
}
else
{
sb.Append(props.LookupRomaji(c.ToString()) ?? c.ToString());
}
}
}
return(sb.ToString());
}