private string WriteAnsi256(Color color, bool foreground)
{
var start = 7;
var ansi = ColorConvert.ToAnsi256(color);
var total = start + StringLength((byte)ansi) + 1;
Span <char> esc = stackalloc char[total];
esc[0] = Escape;
esc[1] = '[';
esc[2] = foreground ? '3' : '4';
esc[3] = '8';
esc[4] = ';';
esc[5] = '5';
esc[6] = ';';
var idx = start;
var sub = esc.Slice(idx);
idx += WriteByte(sub, (byte)ansi);
sub = esc.Slice(idx);
sub[0] = 'm';
idx++;
return(esc.Slice(0, idx).ToString());
}
private string WriteAnsi16(Color color, bool foreground)
{
var start = 2;
var ansi = ColorConvert.ToAnsi16(color);
ansi = foreground ? ansi : ansi + 10;
var total = start + StringLength((byte)ansi) + 1;
Span <char> esc = stackalloc char[total];
esc[0] = Escape;
esc[1] = '[';
var idx = start;
var sub = esc.Slice(idx);
idx += WriteByte(sub, (byte)ansi);
sub[0] = 'm';
idx++;
return(esc.Slice(0, idx).ToString());
}