public int LastIndexOf(uint codePoint)
{
CodePointReverseEnumerator it = CodePoints.GetReverseEnumerator();
while (it.MoveNext())
{
if (it.Current == codePoint)
{
// Move to beginning of code point
it.MoveNext();
return(it.PositionInCodeUnits);
}
}
return(StringNotFound);
}
public Utf8String TrimEnd()
{
CodePointReverseEnumerator it = CodePoints.GetReverseEnumerator();
while (it.MoveNext() && UnicodeCodePoint.IsWhitespace(it.Current))
{
}
return(Substring(0, it.PositionInCodeUnits));
}
public Utf8String TrimEnd(Utf8String trimCharacters)
{
if (trimCharacters == Empty)
{
// Trim Whitespace
return(TrimEnd());
}
CodePointReverseEnumerator it = CodePoints.GetReverseEnumerator();
CodePointEnumerator itPrefix = trimCharacters.GetCodePointEnumerator();
while (it.MoveNext())
{
bool found = false;
// Iterate over prefix set
while (itPrefix.MoveNext())
{
if (it.Current == itPrefix.Current)
{
// Character found, don't check further
found = true;
break;
}
}
if (!found)
{
// Reached the end, char was not found
break;
}
itPrefix.Reset();
}
return(Substring(0, it.PositionInCodeUnits));
}