public void TestGuess(string input, string expectedDecimalSeparator, string expectedGroupSeparator)
{
var nf = NumberFormat.GuessNumberFormat(input);
Check.That(nf.NumberDecimalSeparator).IsEqualTo(expectedDecimalSeparator);
Check.That(nf.NumberGroupSeparator).IsEqualTo(expectedGroupSeparator);
}
/// <summary>
/// Creates the comparer from the user input.
/// </summary>
/// <returns>The scan comparer.</returns>
private IScanComparer CreateComparer(ScanSettings settings)
{
Contract.Requires(settings != null);
Contract.Ensures(Contract.Result <IScanComparer>() != null);
var compareType = compareTypeComboBox.SelectedValue;
var checkBothInputFields = compareType == ScanCompareType.Between || compareType == ScanCompareType.BetweenOrEqual;
if (settings.ValueType == ScanValueType.Byte || settings.ValueType == ScanValueType.Short || settings.ValueType == ScanValueType.Integer || settings.ValueType == ScanValueType.Long)
{
var numberStyle = isHexCheckBox.Checked ? NumberStyles.HexNumber : NumberStyles.Integer;
if (!long.TryParse(dualValueBox.Value1, numberStyle, null, out var value1))
{
throw new InvalidInputException(dualValueBox.Value1);
}
if (!long.TryParse(dualValueBox.Value2, numberStyle, null, out var value2) && checkBothInputFields)
{
throw new InvalidInputException(dualValueBox.Value2);
}
switch (settings.ValueType)
{
case ScanValueType.Byte:
return(new ByteMemoryComparer(compareType, (byte)value1, (byte)value2));
case ScanValueType.Short:
return(new ShortMemoryComparer(compareType, (short)value1, (short)value2));
case ScanValueType.Integer:
return(new IntegerMemoryComparer(compareType, (int)value1, (int)value2));
case ScanValueType.Long:
return(new LongMemoryComparer(compareType, value1, value2));
}
}
else if (settings.ValueType == ScanValueType.Float || settings.ValueType == ScanValueType.Double)
{
int CalculateSignificantDigits(string input, NumberFormatInfo numberFormat)
{
Contract.Requires(input != null);
Contract.Requires(numberFormat != null);
var digits = 0;
var decimalIndex = input.IndexOf(numberFormat.NumberDecimalSeparator, StringComparison.Ordinal);
if (decimalIndex != -1)
{
digits = input.Length - 1 - decimalIndex;
}
return(digits);
}
var nf1 = NumberFormat.GuessNumberFormat(dualValueBox.Value1);
if (!double.TryParse(dualValueBox.Value1, NumberStyles.Float, nf1, out var value1))
{
throw new InvalidInputException(dualValueBox.Value1);
}
var nf2 = NumberFormat.GuessNumberFormat(dualValueBox.Value2);
if (!double.TryParse(dualValueBox.Value2, NumberStyles.Float, nf2, out var value2) && checkBothInputFields)
{
throw new InvalidInputException(dualValueBox.Value2);
}
var significantDigits = Math.Max(
CalculateSignificantDigits(dualValueBox.Value1, nf1),
CalculateSignificantDigits(dualValueBox.Value2, nf2)
);
var roundMode = roundStrictRadioButton.Checked ? ScanRoundMode.Strict : roundLooseRadioButton.Checked ? ScanRoundMode.Normal : ScanRoundMode.Truncate;
switch (settings.ValueType)
{
case ScanValueType.Float:
return(new FloatMemoryComparer(compareType, roundMode, significantDigits, (float)value1, (float)value2));
case ScanValueType.Double:
return(new DoubleMemoryComparer(compareType, roundMode, significantDigits, value1, value2));
}
}
else if (settings.ValueType == ScanValueType.ArrayOfBytes)
{
var pattern = BytePattern.Parse(dualValueBox.Value1);
return(new ArrayOfBytesMemoryComparer(pattern));
}
else if (settings.ValueType == ScanValueType.String)
{
if (string.IsNullOrEmpty(dualValueBox.Value1))
{
throw new InvalidInputException(dualValueBox.Value1);
}
var encoding = encodingUtf8RadioButton.Checked ? Encoding.UTF8 : encodingUtf16RadioButton.Checked ? Encoding.Unicode : Encoding.UTF32;
return(new StringMemoryComparer(dualValueBox.Value1, encoding, caseSensitiveCheckBox.Checked));
}
throw new InvalidOperationException();
}