/// <summary>
/// Tries to create a safe <see cref="Uri"/> object from a string.
/// </summary>
/// <param name="url">The URL.</param>
/// <returns>The <see cref="Uri"/> object or null if no safe <see cref="Uri"/> can be created.</returns>
protected Uri GetSafeUri(string url)
{
Uri uri;
if (!Uri.TryCreate(url, UriKind.RelativeOrAbsolute, out uri) ||
!uri.IsAbsoluteUri && !IsWellFormedRelativeUri(uri) ||
uri.IsAbsoluteUri && !AllowedSchemes.Contains(uri.Scheme, StringComparer.OrdinalIgnoreCase))
{
return(null);
}
return(uri);
}
/// <summary>
/// Tries to create a safe <see cref="Iri"/> object from a string.
/// </summary>
/// <param name="url">The URL.</param>
/// <returns>The <see cref="Iri"/> object or null if no safe <see cref="Iri"/> can be created.</returns>
protected Iri GetSafeIri(string url)
{
var schemeMatch = SchemeRegex.Match(url);
if (schemeMatch.Success)
{
var scheme = schemeMatch.Groups[1].Value;
return(AllowedSchemes.Contains(scheme, StringComparer.OrdinalIgnoreCase) ? new Iri {
Value = url, Scheme = scheme
} : null);
}
return(new Iri {
Value = url
});
}