public bool BeginsWith(NameWithPrefix beginning)
{
// diff. prefixes?
if (HasPrefix != beginning.HasPrefix || !string.Equals(prefix, beginning.prefix, StringComparison.OrdinalIgnoreCase))
return false;
// beginning longer than current value?
if (beginning.names.Length > names.Length)
return false;
for (int i = 0; i < beginning.names.Length; i++)
{
if (!string.Equals(names[i], beginning.names[i], StringComparison.OrdinalIgnoreCase))
return false;
}
return true;
}
public NameWithPrefix RemoveBeginning(NameWithPrefix beginning)
{
if (!BeginsWith(beginning))
throw new InvalidOperationException(string.Format("Can't remove beginning \"{0}\" from name \"{1}\" because it isn't starts with same prefix and names.", beginning, this));
if (beginning.names.Length == names.Length)
throw new InvalidOperationException(string.Format("Can't remove all names from \"{0}\".", this));
string[] newNames = new string[this.names.Length - beginning.names.Length];
Array.Copy(this.names, beginning.names.Length, newNames, 0, newNames.Length);
return new NameWithPrefix(null, newNames);
}
public static NameWithPrefix Combine(NameWithPrefix p1, NameWithPrefix p2)
{
if (p2.HasPrefix)
throw new ArgumentException("Second name can't have prefix.", "p2");
string[] names = new string[p1.names.Length + p2.names.Length];
Array.Copy(p1.names, names, p1.names.Length);
Array.Copy(p2.names, 0, names, p1.names.Length, p2.names.Length);
return new NameWithPrefix(p1.prefix, names);
}