public static string ToSentenceCase(string input, CasingOptions options, SentenceCasingOptions sentenceCasingOptions)
{
if (string.IsNullOrEmpty(input))
{
return(input);
}
if (!options.HasFlag(CasingOptions.PreserveAcronyms))
{
input = input.ToLowerInvariant();
}
string result = input;
if (sentenceCasingOptions.HasFlag(SentenceCasingOptions.DetectMultipleSentences))
{
// Detect multiple sentences in the same string, and convert them all to sentence case.
string pattern = sentenceCasingOptions.HasFlag(SentenceCasingOptions.RequireWhitespaceAfterPunctuation) ?
@"(?:^|[\.!?]\s)\s*(\w)" :
@"(?:^|[\.!?])\s*(\w)";
result = Regex.Replace(input, pattern, m => m.Value.ToUpperInvariant());
}
else
{
// Treat the entire string as a single sentence (only capitalize the first letter).
result = Regex.Replace(input, @"^\s*(\w)", m => m.Value.ToUpperInvariant());
}
if (options.HasFlag(CasingOptions.CapitalizeRomanNumerals))
{
result = CapitalizeRomanNumerals(result);
}
return(result);
}
public static string ToSentenceCase(string input, SentenceCasingOptions options)
{
return(ToSentenceCase(input, CasingOptions.Default, options));
}
