private CaseFoldingEntry[] GetCaseFolding()
{
List <CaseFoldingEntry> list = new List <CaseFoldingEntry>();
List <string> segs = new List <string>();
List <int> codeList = new List <int>();
using (LineReader reader = OpenLineReader("CaseFolding.txt")) {
foreach (var count in reader.GetLines(segs, 3))
{
var entry = new CaseFoldingEntry();
if (!TryParseHex(segs[0], out entry.Code))
{
continue;
}
var status = segs[1].Trim();
if (status.Length != 1)
{
continue;
}
switch (status[0])
{
case 'C':
entry.Status = CaseFoldingStatus.Common;
break;
case 'F':
entry.Status = CaseFoldingStatus.Full;
break;
case 'S':
entry.Status = CaseFoldingStatus.Simple;
break;
case 'T':
entry.Status = CaseFoldingStatus.Special;
break;
default:
continue;
}
if (TryParseHex(codeList, segs[2], out entry.Mapping))
{
list.Add(entry);
}
}
}
list.Sort();
return(list.ToArray());
}
public int GetFoldingCharacter(int codeValue)
{
int idx = CaseFoldings.BinaryFind(codeValue);
idx = CaseFoldings.GetRange(codeValue, out int stop);
if (idx >= 0)
{
for (int i = idx; i <= stop; i++)
{
ref CaseFoldingEntry ptr = ref _caseFoldings[i];
if (ptr.Mapping.Count == 1 &&
ptr.Status == CaseFoldingStatus.Common ||
ptr.Status == CaseFoldingStatus.Simple)
{
return(ptr.Mapping.First);
}
}
}
