private string Intern(string value)
{
if (value == null)
{
return(null);
}
if (value.Length == 0)
{
return(string.Empty);
}
string found;
if (stringInterner == null)
{
stringInterner = new System.Collections.Generic.Dictionary <string, string>();
stringInterner.Add(value, value);
}
else if (stringInterner.TryGetValue(value, out found))
{
value = found;
}
else
{
stringInterner.Add(value, value);
}
return(value);
}
