internal static int GetCommonPathLength(string first, string second, bool ignoreCase)
{
int index = PathInternal.EqualStartingCharacterCount(first, second, ignoreCase);
if (index == 0 || index == first.Length && (index == second.Length || PathInternal.IsDirectorySeparator(second[index])) || index == second.Length && PathInternal.IsDirectorySeparator(first[index]))
{
return(index);
}
while (index > 0 && !PathInternal.IsDirectorySeparator(first[index - 1]))
{
--index;
}
return(index);
}
