public static StringBuilder Add(this StringBuilder sb, int line, string value)
{
int index = sb.FindCursorIndex();
sb.RemoveCursor().Insert(index, value).AddCursor(line);
return(sb);
}
public static StringBuilder NewLine(this StringBuilder sb, string value)
{
int line = sb.FindCursorLine();
int index = sb.FindCursorIndex();
return(sb.RemoveCursor().Insert(index, $"{Environment.NewLine}{value}").AddCursor(line + 1));
}
public static StringBuilder MoveCursorToLineStart(this StringBuilder sb)
{
int cursorLine = sb.FindIndexLine(sb.FindCursorIndex());
int index = sb.FindLineIndex(cursorLine);
sb.RemoveCursor().AddCursorIndex(index);
return(sb);
}
private static int FindCursorLine(this StringBuilder sb)
{
return(sb.FindIndexLine(sb.FindCursorIndex()));
}
