public static string ToRomaji(string input, bool upcaseKatakana, Trie <char, string> customRomajiMapping)
{
if (string.IsNullOrEmpty(input))
{
return(string.Empty);
}
var romajiTree = Trie <char, string> .Merge(HepburnTree, customRomajiMapping ?? Trie <char, string> .Empty, (a, b) => b.Value);
var builder = new StringBuilder();
int position = 0;
do
{
var pair = Convert(romajiTree, input, position);
var uppercase = upcaseKatakana && WanaKana.IsKatakana(input.Substring(position, pair.Position - position));
builder.Append(uppercase ? pair.Token.ToUpper() : pair.Token);
position = pair.Position;
} while(position < input.Length);
return(builder.ToString());
}
public static String Convert(String input, Boolean upcaseKatakana, Trie <Char, String> customRomajiMapping)
{
if (String.IsNullOrEmpty(input))
{
return("");
}
var romajiTree = (customRomajiMapping == null) ? HepburnTree : customRomajiMapping;
var builder = new StringBuilder();
Int32 position = 0;
do
{
var pair = Convert(romajiTree, input, position);
var uppercase = upcaseKatakana && WanaKana.IsKatakana(input.Substring(position, pair.Position - position));
builder.Append(uppercase ? pair.Token.ToUpper() : pair.Token);
position = pair.Position;
} while (position < input.Length);
return(builder.ToString());
}