public TransliteratingUrlSegmentGenerator(UrlSegmentOptions urlSegmentOptions)
{
urlSegmentOptions = urlSegmentOptions ?? new UrlSegmentOptions();
defaultRegexValidUrlChars = new Regex($"^[{urlSegmentOptions.ValidCharacters}]+$", RegexOptions.Compiled);
var defaultRegexFindInvalidUrlChars = new Regex($"[^{urlSegmentOptions.ValidCharacters}]{{1}}", RegexOptions.Compiled);
defaultFindInvalidUrlMethod = s => defaultRegexFindInvalidUrlChars.Matches(s);
defaultOptions = urlSegmentOptions;
}
public string Create(string proposedSegment, UrlSegmentOptions options)
{
var segmentOption = options ?? defaultOptions;
var charMap = segmentOption.CharacterMap;
var invalidCharRegex = options != null ? (s => Regex.Matches(s, $"[^{options.ValidCharacters}]{{1}}")) : defaultFindInvalidUrlMethod;
var cleanedSegment = ReplaceIllegalNames(ReplaceIllegalChars(Transliterate(proposedSegment), invalidCharRegex, charMap));
while (cleanedSegment.Contains("--"))
{
cleanedSegment = cleanedSegment.Replace("--", "-");
}
while (cleanedSegment.EndsWith(".") || cleanedSegment.EndsWith("-"))
{
cleanedSegment = cleanedSegment.Substring(0, cleanedSegment.Length - 1);
}
if (segmentOption.UseLowercase)
{
return(cleanedSegment.ToLowerInvariant());
}
return(cleanedSegment);
}
public bool IsValid(string segment, UrlSegmentOptions options)
{
return(options == null?defaultRegexValidUrlChars.IsMatch(segment) : Regex.IsMatch(segment, $"^[{options.ValidCharacters}]+$"));
}
