if (parameterCount == 3)
{
int index = text.indexOf(oldText);
if (index == -1)
{
return new TypeValuePair(TextType.TYPE, text);
}
String result = text;
while (index >= 0)
{
final StringBuffer buffer = new StringBuffer(result);
buffer.replace(index, index + oldText.length(), newText);
result = buffer.toString();
index = result.indexOf(oldText, index + newText.length());
}
return new TypeValuePair(TextType.TYPE, result);
}
// Instead of replacing all occurences, the user only requested to replace
// a specific one.
final Type whichType = parameters.getType(3);
final Object whichValue = parameters.getValue(3);
final Number n = typeRegistry.convertToNumber(whichType, whichValue);
if (n.doubleValue() < 1)
{
throw new EvaluationException(
LibFormulaErrorValue.ERROR_INVALID_ARGUMENT_VALUE);
}
final int nthOccurence = n.intValue();
int index = text.indexOf(oldText);
if (index == -1)
{
return new TypeValuePair(TextType.TYPE, text);
}
String result = text;
int counter = 1;
while (index >= 0)
{
if (counter == nthOccurence)
{
final StringBuffer buffer = new StringBuffer(result);
buffer.replace(index, index + oldText.length(), newText);
result = buffer.toString();
index = result.indexOf(oldText, index + newText.length());
}
else
{
index = result.indexOf(oldText, index + 1);
}
counter += 1;
}
return new TypeValuePair(TextType.TYPE, result);
}