/// <summary>
/// Preps a name according to the Stringprep profile defined in
/// RFC3491.
/// *
/// </summary>
/// <param name="input">
/// the name to prep.
/// </param>
/// <param name="allowUnassigned">
/// true if the name may contain unassigned
/// code points.
/// </param>
/// <returns>
/// the prepped name.
/// @throws StringprepException If the name cannot be prepped with
/// this profile.
/// @throws NullPointerException If the name is null.
/// </returns>
public static string NamePrep(string input, bool allowUnassigned)
{
if (input == null)
{
throw new NullReferenceException();
}
var s = new StringBuilder(input);
if (!allowUnassigned && Contains(s, RFC3454.A1))
{
throw new StringprepException(StringprepException.CONTAINS_UNASSIGNED);
}
Filter(s, RFC3454.B1);
Map(s, RFC3454.B2search, RFC3454.B2replace);
s = new StringBuilder(NFKC.NormalizeNFKC(s.ToString()));
// B.3 is only needed if NFKC is not used, right?
// map(s, RFC3454.B3search, RFC3454.B3replace);
if (Contains(s, RFC3454.C12) || Contains(s, RFC3454.C22) || Contains(s, RFC3454.C3) ||
Contains(s, RFC3454.C4) || Contains(s, RFC3454.C5) || Contains(s, RFC3454.C6) || Contains(s, RFC3454.C7) ||
Contains(s, RFC3454.C8))
{
// Table C.9 only contains code points > 0xFFFF which Java
// doesn't handle
throw new StringprepException(StringprepException.CONTAINS_PROHIBITED);
}
// Bidi handling
var r = Contains(s, RFC3454.D1);
var l = Contains(s, RFC3454.D2);
// RFC 3454, section 6, requirement 1: already handled above (table C.8)
// RFC 3454, section 6, requirement 2
if (r && l)
{
throw new StringprepException(StringprepException.BIDI_BOTHRAL);
}
// RFC 3454, section 6, requirement 3
if (r)
{
if (!Contains(s[0], RFC3454.D1) || !Contains(s[s.Length - 1], RFC3454.D1))
{
throw new StringprepException(StringprepException.BIDI_LTRAL);
}
}
return(s.ToString());
}
/// <summary>
/// Preps a resource name according to the Stringprep profile defined
/// in RFC3920.
/// </summary>
/// <param name="input">the resource name to prep.
/// </param>
/// <param name="allowUnassigned">true if the resource name may contain
/// unassigned code points.
/// </param>
/// <returns>
/// the prepped node name.
/// @throws StringprepException If the resource name cannot be prepped
/// with this profile.
/// @throws NullPointerException If the resource name is null.
///
/// </returns>
public static string ResourcePrep(string input, bool allowUnassigned)
{
if (input == null)
{
throw new System.NullReferenceException();
}
StringBuilder s = new StringBuilder(input);
if (!allowUnassigned && Contains(s, RFC3454.A1))
{
throw new StringprepException(StringprepException.CONTAINS_UNASSIGNED);
}
Filter(s, RFC3454.B1);
s = new StringBuilder(NFKC.NormalizeNFKC(s.ToString()));
if (Contains(s, RFC3454.C12) || Contains(s, RFC3454.C21) || Contains(s, RFC3454.C22) || Contains(s, RFC3454.C3) || Contains(s, RFC3454.C4) || Contains(s, RFC3454.C5) || Contains(s, RFC3454.C6) || Contains(s, RFC3454.C7) || Contains(s, RFC3454.C8))
{
// Table C.9 only contains code points > 0xFFFF which Java
// doesn't handle
throw new StringprepException(StringprepException.CONTAINS_PROHIBITED);
}
// Bidi handling
bool r = Contains(s, RFC3454.D1);
bool l = Contains(s, RFC3454.D2);
// RFC 3454, section 6, requirement 1: already handled above (table C.8)
// RFC 3454, section 6, requirement 2
if (r && l)
{
throw new StringprepException(StringprepException.BIDI_BOTHRAL);
}
// RFC 3454, section 6, requirement 3
if (r)
{
if (!Contains(s[0], RFC3454.D1) || !Contains(s[s.Length - 1], RFC3454.D1))
{
throw new StringprepException(StringprepException.BIDI_LTRAL);
}
}
return(s.ToString());
}
