private string RegexStrategy(string Input)
{
MaskFormula maskFormula = _provider.MaskFormulas
.Where(m => m.ProviderCode == _ProviderCode)
.Single();
Match match = Regex.Match(Input, maskFormula.MaskExpression);
string _masked;
int startPos = 0;
int matchLen = 0;
if (match.Success)
{
startPos = match.Groups.Count > 0 ? match.Groups[1].Index : 0;
matchLen = match.Groups.Count > 0 ? match.Groups[1].Length : 0;
}
_masked = Input.Substring(0, startPos);
for (int pos = startPos; pos < Input.Length; pos++)
{
string chr = Input.Substring(pos, 1);
match = Regex.Match(chr, maskFormula.ReplaceRegex);
if (match.Success && pos < (matchLen + startPos))
{
_masked += maskFormula.MaskChar;
}
else
{
_masked += chr;
}
}
return(_masked);
}
public Masker(string Input, string ProviderCode) : this()
{
_MaskFormula = new MaskFormula(ProviderCode)
{
MaskFormulaType = MaskFormulaTypes.REGEX
};
Strategy = RegexStrategy;
_ProviderCode = ProviderCode;
_input = Input;
}