private bool ends_in_enter()
{
if (indexes_.Count > 0)
{
bool ends_in_enter = indexes_.Last() + 2 >= string_.Length;
return(ends_in_enter);
}
else
{
return(false);
}
}
private string line_at_impl(int idx)
{
// note : it's possible to ask for an invalid line, while refreshing on the other thread
//Debug.Assert(idx < line_count);
if (idx == 0)
{
return((indexes_.Count > 0) ? string_.ToString(0, indexes_[0]) : "");
}
if (idx < indexes_.Count)
{
int start = indexes_[idx - 1] + 1;
int end = indexes_[idx];
// 1.3.11+ account for enters in all cases : '\r', '\n', '\r\n', '\n\r'
if (start < end && (string_[start] == '\r' || string_[start] == '\n'))
{
++start;
}
return(string_.ToString(start, end - start));
}
else if (idx == indexes_.Count)
{
// last line
int start = indexes_.Last() + 1;
int end = string_.Length;
if (end <= start)
{
return("");
}
// 1.3.11+ account for enters in all cases : '\r', '\n', '\r\n', '\n\r'
if (start < end && (string_[start] == '\r' || string_[start] == '\n'))
{
++start;
}
return(string_.ToString(start, end - start));
}
else
{
return("");
}
}