internal static string ToUrlFriendly(this string s)
{
// make it all lower case
string title = s.ToLower();
// replace ae, oe aa
title = title.Replace("æ", "ae").Replace("å", "aa").Replace("ø", "oe");
// remove entities
title = Regex.Replace(title, @"&\w+;", "");
// remove anything that is not letters, numbers, dash, or space
title = Regex.Replace(title, @"[^a-z0-9\-\s]", "");
// replace spaces
title = title.Replace(' ', '-');
// collapse dashes
title = Regex.Replace(title, @"-{2,}", "-");
// trim excessive dashes at the beginning
title = title.TrimStart(new[] { '-' });
// if it's too long, clip it
if (title.Length > 80)
title = title.Substring(0, 79);
// remove trailing dashes
title = title.TrimEnd(new[] { '-' });
return title;
}
