/**
* Handles 'L' cases
*/
private int HandleL(string value, DoubleMetaphoneResult result, int index)
{
// PIN: do not add another L if the last added character was also a L
if (!result.GetPrimary().ToUpper().EndsWith("L"))
{
result.Append('L');
}
// PIN: Todo: handle spanish e.g. 'cabrillo', 'gallegos'
// one example can be found here: http://swoodbridge.com/DoubleMetaPhone/double_metaphone_func_1-01.txt
if (CharAt(value, index + 1) == 'L')
{
if (ConditionL0(value, index))
{
result.AppendAlternate(' ');
}
index += 2;
}
else
{
index++;
}
return(index);
}
/**
* Handles 'L' cases
*/
private int HandleL(string value, DoubleMetaphoneResult result, int index)
{
// PIN: do not add another L if the last added character was also a L
if (!result.GetPrimary().ToUpper().EndsWith("L")) {
result.Append('L');
}
// PIN: Todo: handle spanish e.g. 'cabrillo', 'gallegos'
// one example can be found here: http://swoodbridge.com/DoubleMetaPhone/double_metaphone_func_1-01.txt
if (CharAt(value, index + 1) == 'L')
{
if (ConditionL0(value, index))
{
result.AppendAlternate(' ');
}
index += 2;
}
else
{
index++;
}
return index;
}
/**
* Encode a value with Double Metaphone, optionally using the alternate
* encoding.
*
* @param value string to encode
* @param alternate use alternate encode
* @return an encoded string
*/
public string Encode(string value, bool alternate)
{
value = CleanInput(value);
if (value == null)
{
return null;
}
bool slavoGermanic = IsSlavoGermanic(value);
int index = IsSilentStart(value) ? 1 : 0;
DoubleMetaphoneResult result = new DoubleMetaphoneResult(this.GetMaxCodeLen(), this);
while (!result.IsComplete() && index <= value.Length - 1)
{
switch (value[index])
{
case 'A':
case 'E':
case 'I':
case 'O':
case 'U':
case 'Y':
case 'À':
case 'Á':
case 'Â':
case 'Ã':
case 'Ä':
case 'Å':
case 'Æ':
case 'È':
case 'É':
case 'Ê':
case 'Ë':
case 'Ì':
case 'Í':
case 'Î':
case 'Ï':
case 'Ò':
case 'Ó':
case 'Ô':
case 'Õ':
case 'Ö':
case 'Ø':
case 'Ù':
case 'Ú':
case 'Û':
case 'Ü':
case 'Ý':
index = HandleAEIOUY(value, result, index);
break;
case 'B':
result.Append('P');
index = CharAt(value, index + 1) == 'B' ? index + 2 : index + 1;
break;
case '\u00C7':
// A C with a Cedilla
result.Append('S');
index++;
break;
case 'C':
index = HandleC(value, result, index);
break;
case 'D':
index = HandleD(value, result, index);
break;
case 'F':
index = HandleF(value, result, index);
break;
case 'G':
index = HandleG(value, result, index, slavoGermanic);
break;
case 'H':
index = HandleH(value, result, index);
break;
case 'J':
index = HandleJ(value, result, index, slavoGermanic);
break;
case 'K':
result.Append('K');
index = CharAt(value, index + 1) == 'K' ? index + 2 : index + 1;
break;
case 'L':
index = HandleL(value, result, index);
break;
case 'M':
result.Append('M');
index = ConditionM0(value, index) ? index + 2 : index + 1;
break;
case 'N':
result.Append('N');
index = CharAt(value, index + 1) == 'N' ? index + 2 : index + 1;
break;
case '\u00D1':
// N with a tilde (spanish ene)
result.Append('N');
index++;
break;
case 'P':
index = HandleP(value, result, index);
break;
case 'Q':
result.Append('K');
index = CharAt(value, index + 1) == 'Q' ? index + 2 : index + 1;
break;
case 'R':
index = HandleR(value, result, index, slavoGermanic);
break;
case 'S':
index = HandleS(value, result, index, slavoGermanic);
break;
case 'T':
index = HandleT(value, result, index);
break;
case 'V':
index = HandleV(value, result, index);
break;
case 'W':
index = HandleW(value, result, index);
break;
case 'X':
index = HandleX(value, result, index);
break;
case 'Z':
index = HandleZ(value, result, index, slavoGermanic);
break;
default:
index++;
break;
}
}
return alternate ? result.GetAlternate() : result.GetPrimary();
}
/**
* Encode a value with Double Metaphone, optionally using the alternate
* encoding.
*
* @param value string to encode
* @param alternate use alternate encode
* @return an encoded string
*/
public string Encode(string value, bool alternate)
{
value = CleanInput(value);
if (value == null)
{
return(null);
}
bool slavoGermanic = IsSlavoGermanic(value);
int index = IsSilentStart(value) ? 1 : 0;
DoubleMetaphoneResult result = new DoubleMetaphoneResult(this.GetMaxCodeLen(), this);
while (!result.IsComplete() && index <= value.Length - 1)
{
switch (value[index])
{
case 'A':
case 'E':
case 'I':
case 'O':
case 'U':
case 'Y':
case 'À':
case 'Á':
case 'Â':
case 'Ã':
case 'Ä':
case 'Å':
case 'Æ':
case 'È':
case 'É':
case 'Ê':
case 'Ë':
case 'Ì':
case 'Í':
case 'Î':
case 'Ï':
case 'Ò':
case 'Ó':
case 'Ô':
case 'Õ':
case 'Ö':
case 'Ø':
case 'Ù':
case 'Ú':
case 'Û':
case 'Ü':
case 'Ý':
index = HandleAEIOUY(value, result, index);
break;
case 'B':
result.Append('P');
index = CharAt(value, index + 1) == 'B' ? index + 2 : index + 1;
break;
case '\u00C7':
// A C with a Cedilla
result.Append('S');
index++;
break;
case 'C':
index = HandleC(value, result, index);
break;
case 'D':
index = HandleD(value, result, index);
break;
case 'F':
index = HandleF(value, result, index);
break;
case 'G':
index = HandleG(value, result, index, slavoGermanic);
break;
case 'H':
index = HandleH(value, result, index);
break;
case 'J':
index = HandleJ(value, result, index, slavoGermanic);
break;
case 'K':
result.Append('K');
index = CharAt(value, index + 1) == 'K' ? index + 2 : index + 1;
break;
case 'L':
index = HandleL(value, result, index);
break;
case 'M':
result.Append('M');
index = ConditionM0(value, index) ? index + 2 : index + 1;
break;
case 'N':
result.Append('N');
index = CharAt(value, index + 1) == 'N' ? index + 2 : index + 1;
break;
case '\u00D1':
// N with a tilde (spanish ene)
result.Append('N');
index++;
break;
case 'P':
index = HandleP(value, result, index);
break;
case 'Q':
result.Append('K');
index = CharAt(value, index + 1) == 'Q' ? index + 2 : index + 1;
break;
case 'R':
index = HandleR(value, result, index, slavoGermanic);
break;
case 'S':
index = HandleS(value, result, index, slavoGermanic);
break;
case 'T':
index = HandleT(value, result, index);
break;
case 'V':
index = HandleV(value, result, index);
break;
case 'W':
index = HandleW(value, result, index);
break;
case 'X':
index = HandleX(value, result, index);
break;
case 'Z':
index = HandleZ(value, result, index, slavoGermanic);
break;
default:
index++;
break;
}
}
return(alternate ? result.GetAlternate() : result.GetPrimary());
}