public static string Filter(this string value, FilterAction matchRule, UnicodeCategory categories)
{
return new string((from c in value
where matchRule == FilterAction.Keep
? categories.HasFlag(Char.GetUnicodeCategory(c))
: !categories.HasFlag(Char.GetUnicodeCategory(c))
select c).ToArray());
}
public static string Filter(this string value, FilterAction matchRule, UnicodeCategory categories)
{
return(new string(
(
from c in value
where matchRule == FilterAction.Keep
? categories.HasFlag(char.GetUnicodeCategory(c))
: !categories.HasFlag(char.GetUnicodeCategory(c))
select c).ToArray()));
}
/// <summary>
/// Method to determine if a character is within those deemed of interest
/// </summary>
/// <param name="characterUnderTest">The character for which interest is being determined</param>
/// <param name="categoriesOfInterest">The categories of characters that have been deemed interesting</param>
/// <param name="setNameMatch">Optional word expected to be found in the character set name if it is of interest</param>
/// <returns>Boolean true if the character meets the match rules, otherwise false</returns>
private bool IsOfInterest(char characterUnderTest, UnicodeCategory categoriesOfInterest, string setNameMatch)
{
int codePoint;
System.Unicode.UnicodeCharInfo unicodeInfo;
// Start by checking if the character is within the categories that are of interest
if (categoriesOfInterest.HasFlag(CharUnicodeInfo.GetUnicodeCategory(characterUnderTest)))
{
// Check if a set name match has been requested
if (string.IsNullOrEmpty(setNameMatch))
{
// No set name match required; it's a match
return(true);
}
// Perform matching of the name of the set in which the character resides
codePoint = Convert.ToInt32(characterUnderTest);
unicodeInfo = System.Unicode.UnicodeInfo.GetCharInfo(codePoint);
if (unicodeInfo.Block.Contains(setNameMatch))
{
return(true);
}
}
return(false);
}