public function __construct(Buffer $buf)
{
$this->buf = $buf;
$this->color = Color::NIL();
}
private function exportRow($row, $x, $w)
{
$color = Color::NIL();
$ret = '';
$sz = count($this->buf[$row]);
for ($i = $x; $i < $x + $w and $i < $sz; $i++) {
if (!isset($this->buf[$row][$i])) {
echo sprintf("Dump: row = %s, i = %s, x = %s, w = %s\n", $row, $i, $x, $w);
//echo var_export($this->buf[$row]) . "\n";
exit(1);
}
list($char, $clr) = $this->buf[$row][$i];
if ($color != $clr) {
$ret .= $clr->export();
$color = $clr;
}
$ret .= $char;
if (WString::isWide($char)) {
$i++;
}
}
if ($x + $w > $sz) {
if ($color != Color::NIL()) {
$ret .= Color::NIL()->export();
}
$ret .= str_repeat(' ', $x + $w - $sz);
}
return $ret;
}