/// <summary>
/// Handles 'R' cases.
/// </summary>
private int HandleR(string value, DoubleMetaphoneResult result, int index,
bool slavoGermanic)
{
if (index == value.Length - 1 && !slavoGermanic &&
Contains(value, index - 2, 2, "IE") &&
!Contains(value, index - 4, 2, "ME", "MA"))
{
result.AppendAlternate('R');
}
else
{
result.Append('R');
}
return(CharAt(value, index + 1) == 'R' ? index + 2 : index + 1);
}
/// <summary>
/// Handles 'W' cases.
/// </summary>
private int HandleW(string value, DoubleMetaphoneResult result, int index)
{
if (Contains(value, index, 2, "WR"))
{
//-- can also be in middle of word --//
result.Append('R');
index += 2;
}
else
{
if (index == 0 && (IsVowel(CharAt(value, index + 1)) ||
Contains(value, index, 2, "WH")))
{
if (IsVowel(CharAt(value, index + 1)))
{
//-- Wasserman should match Vasserman --//
result.Append('A', 'F');
}
else
{
//-- need Uomo to match Womo --//
result.Append('A');
}
index++;
}
else if ((index == value.Length - 1 && IsVowel(CharAt(value, index - 1))) ||
Contains(value, index - 1, 5, "EWSKI", "EWSKY", "OWSKI", "OWSKY") ||
Contains(value, 0, 3, "SCH"))
{
//-- Arnow should match Arnoff --//
result.AppendAlternate('F');
index++;
}
else if (Contains(value, index, 4, "WICZ", "WITZ"))
{
//-- Polish e.g. "filipowicz" --//
result.Append("TS", "FX");
index += 4;
}
else
{
index++;
}
}
return(index);
}
/// <summary>
/// Handles 'S' cases.
/// </summary>
private int HandleS(string value, DoubleMetaphoneResult result, int index,
bool slavoGermanic)
{
if (Contains(value, index - 1, 3, "ISL", "YSL"))
{
//-- special cases "island", "isle", "carlisle", "carlysle" --//
index++;
}
else if (index == 0 && Contains(value, index, 5, "SUGAR"))
{
//-- special case "sugar-" --//
result.Append('X', 'S');
index++;
}
else if (Contains(value, index, 2, "SH"))
{
if (Contains(value, index + 1, 4, "HEIM", "HOEK", "HOLM", "HOLZ"))
{
//-- germanic --//
result.Append('S');
}
else
{
result.Append('X');
}
index += 2;
}
else if (Contains(value, index, 3, "SIO", "SIA") || Contains(value, index, 4, "SIAN"))
{
//-- Italian and Armenian --//
if (slavoGermanic)
{
result.Append('S');
}
else
{
result.Append('S', 'X');
}
index += 3;
}
else if ((index == 0 && Contains(value, index + 1, 1, "M", "N", "L", "W")) ||
Contains(value, index + 1, 1, "Z"))
{
//-- german & anglicisations, e.g. "smith" match "schmidt" //
// "snider" match "schneider" --//
//-- also, -sz- in slavic language although in hungarian it //
// is pronounced "s" --//
result.Append('S', 'X');
index = Contains(value, index + 1, 1, "Z") ? index + 2 : index + 1;
}
else if (Contains(value, index, 2, "SC"))
{
index = HandleSC(value, result, index);
}
else
{
if (index == value.Length - 1 && Contains(value, index - 2, 2, "AI", "OI"))
{
//-- french e.g. "resnais", "artois" --//
result.AppendAlternate('S');
}
else
{
result.Append('S');
}
index = Contains(value, index + 1, 1, "S", "Z") ? index + 2 : index + 1;
}
return(index);
}
