| public static GetDecimalDigitValue ( String s, int index ) : int | ||
| s | String | |
| index | int | |
| return | int | |
private static void VerifyNativeDigits(string[] nativeDig, string propertyName)
{
if (nativeDig == null)
{
throw new ArgumentNullException(propertyName, Environment.GetResourceString("ArgumentNull_Array"));
}
if (nativeDig.Length != 10)
{
throw new ArgumentException(propertyName, Environment.GetResourceString("Argument_InvalidNativeDigitCount"));
}
for (int i = 0; i < nativeDig.Length; i++)
{
if (nativeDig[i] == null)
{
throw new ArgumentNullException(propertyName, Environment.GetResourceString("ArgumentNull_ArrayValue"));
}
if (nativeDig[i].Length != 1)
{
if (nativeDig[i].Length != 2)
{
throw new ArgumentException(propertyName, Environment.GetResourceString("Argument_InvalidNativeDigitValue"));
}
if (!char.IsSurrogatePair(nativeDig[i][0], nativeDig[i][1]))
{
throw new ArgumentException(propertyName, Environment.GetResourceString("Argument_InvalidNativeDigitValue"));
}
}
if ((CharUnicodeInfo.GetDecimalDigitValue(nativeDig[i], 0) != i) && (CharUnicodeInfo.GetUnicodeCategory(nativeDig[i], 0) != UnicodeCategory.PrivateUse))
{
throw new ArgumentException(propertyName, Environment.GetResourceString("Argument_InvalidNativeDigitValue"));
}
}
}
/// <summary>Gets the decimal digit value of the numeric character at the specified index of the specified string.</summary>
/// <returns>The decimal digit value of the numeric character at the specified index of the specified string.-or- -1, if the character at the specified index of the specified string is not a decimal digit.</returns>
/// <param name="s">The <see cref="T:System.String" /> containing the Unicode character for which to get the decimal digit value. </param>
/// <param name="index">The index of the Unicode character for which to get the decimal digit value. </param>
/// <exception cref="T:System.ArgumentNullException">
/// <paramref name="s" /> is null. </exception>
/// <exception cref="T:System.ArgumentOutOfRangeException">
/// <paramref name="index" /> is outside the range of valid indexes in <paramref name="s" />. </exception>
public static int GetDecimalDigitValue(string s, int index)
{
if (s == null)
{
throw new ArgumentNullException("s");
}
return(CharUnicodeInfo.GetDecimalDigitValue(s[index]));
}
static private void VerifyNativeDigits(String [] nativeDig, String propertyName)
{
if (nativeDig == null)
{
throw new ArgumentNullException(propertyName,
Environment.GetResourceString("ArgumentNull_Array"));
}
if (nativeDig.Length != 10)
{
throw new ArgumentException(Environment.GetResourceString("Argument_InvalidNativeDigitCount"), propertyName);
}
Contract.EndContractBlock();
for (int i = 0; i < nativeDig.Length; i++)
{
if (nativeDig[i] == null)
{
throw new ArgumentNullException(propertyName,
Environment.GetResourceString("ArgumentNull_ArrayValue"));
}
if (nativeDig[i].Length != 1)
{
if (nativeDig[i].Length != 2)
{
// Not 1 or 2 UTF-16 code points
throw new ArgumentException(Environment.GetResourceString("Argument_InvalidNativeDigitValue"), propertyName);
}
else if (!char.IsSurrogatePair(nativeDig[i][0], nativeDig[i][1]))
{
// 2 UTF-6 code points, but not a surrogate pair
throw new ArgumentException(Environment.GetResourceString("Argument_InvalidNativeDigitValue"), propertyName);
}
}
if (CharUnicodeInfo.GetDecimalDigitValue(nativeDig[i], 0) != i &&
CharUnicodeInfo.GetUnicodeCategory(nativeDig[i], 0) != UnicodeCategory.PrivateUse)
{
// Not the appropriate digit according to the Unicode data properties
// (Digit 0 must be a 0, etc.).
throw new ArgumentException(Environment.GetResourceString("Argument_InvalidNativeDigitValue"), propertyName);
}
}
}
private static void VerifyNativeDigits(string[] nativeDig, string propertyName)
{
if (nativeDig == null)
{
throw new ArgumentNullException(propertyName, SR.ArgumentNull_Array);
}
if (nativeDig.Length != 10)
{
throw new ArgumentException(SR.Argument_InvalidNativeDigitCount, propertyName);
}
for (int i = 0; i < nativeDig.Length; i++)
{
if (nativeDig[i] == null)
{
throw new ArgumentNullException(propertyName, SR.ArgumentNull_ArrayValue);
}
if (nativeDig[i].Length != 1)
{
if (nativeDig[i].Length != 2)
{
// Not 1 or 2 UTF-16 code points
throw new ArgumentException(SR.Argument_InvalidNativeDigitValue, propertyName);
}
else if (!char.IsSurrogatePair(nativeDig[i][0], nativeDig[i][1]))
{
// 2 UTF-6 code points, but not a surrogate pair
throw new ArgumentException(SR.Argument_InvalidNativeDigitValue, propertyName);
}
}
if (CharUnicodeInfo.GetDecimalDigitValue(nativeDig[i], 0) != i &&
CharUnicodeInfo.GetUnicodeCategory(nativeDig[i], 0) != UnicodeCategory.PrivateUse)
{
// Not the appropriate digit according to the Unicode data properties
// (Digit 0 must be a 0, etc.).
throw new ArgumentException(SR.Argument_InvalidNativeDigitValue, propertyName);
}
}
}
/// <summary>Gets the digit value of the specified numeric character.</summary>
/// <returns>The digit value of the specified numeric character.-or- -1, if the specified character is not a digit.</returns>
/// <param name="ch">The Unicode character for which to get the digit value. </param>
public static int GetDigitValue(char ch)
{
int decimalDigitValue = CharUnicodeInfo.GetDecimalDigitValue(ch);
if (decimalDigitValue >= 0)
{
return(decimalDigitValue);
}
if (ch == '⓪')
{
return(0);
}
if (ch >= '①' && ch < '⑩')
{
return((int)(ch - ''));
}
if (ch >= '⑴' && ch < '⑽')
{
return((int)(ch - '⑳'));
}
if (ch >= '⒈' && ch < '⒑')
{
return((int)(ch - '⒇'));
}
if (ch >= '⓵' && ch < '⓾')
{
return((int)(ch - '⓴'));
}
if (ch >= '❶' && ch < '❿')
{
return((int)(ch - '❵'));
}
if (ch >= '➀' && ch < '➉')
{
return((int)(ch - '❿'));
}
if (ch >= '➊' && ch < '➓')
{
return((int)(ch - '➉'));
}
return(-1);
}
