function make_t128_from_initial_toggles($url, $dots)
{
$ret = '';
$byte = 0;
for ($y = 0; $y < 128; ++$y) {
for ($x = 0; $x < 128; ++$x) {
# every 16 pixels the first char changes
$suf = substr(URL_CHARS, floor($y / 16) * 8 + floor($x / 16), 1);
# every 2 pxels the 2nd char changes
$suf .= substr(URL_CHARS, floor($y / 2) % 8 * 8 + floor($x / 2) % 8, 1);
# every pixel it goes 0, 4, 0, 4, 0, 4, etc
$suf .= substr(URL_CHARS, $y * 4 % 8 * 8 + $x * 4 % 8, 1);
$tog = get_initial_toggle($url . $suf, $dots);
$byte = $byte << 1 | $tog;
if ($x % 8 == 7) {
$ret .= chr($byte);
$byte = 0;
}
}
}
return $ret;
}
function binary_main()
{
if (isset($_REQUEST['z'])) {
$url = ereg_replace('[^a-zA-Z0-9._-]', '', $_REQUEST['z']);
$pos = strpos($url, '.');
if ($pos !== false) {
$dots = substr($url, $pos);
$dots = ereg_replace('[^.]', '', $dots);
$url = substr($url, 0, $pos);
if (strlen($dots) > 2 || $url == '' && $dots != '') {
print "Invalid URL";
return;
}
} else {
$dots = '';
}
} else {
$url = '';
$dots = '';
}
if (!am_debugging()) {
header('Content-Type: text/javascript; charset=us-ascii');
}
$SQUARE_WIDTH = 256;
# $GLOBALS['pixels'] is an array of ints, because php won't let me use ^= on chars.
$GLOBALS['pixels'] = array_fill(0, 256 * 256 / 8, 255);
$initial_toggle = get_initial_toggle($url, $dots);
$shadow = str_repeat("", 128 * 128 / 8);
#FIXME
switch ($dots) {
case '':
$shadow = hard_shadow($url);
hard_square($url, $shadow);
break;
case '..':
$shadow = medium_shadow($url);
medium_square($url, $shadow);
break;
case '.':
$shadow = easy_shadow($url);
easy_square($url, $shadow);
break;
}
$color = 0;
$out = '[';
$cur = 0;
for ($i = 0; $i < PIXELS_RB * 256; $i++) {
$byte = $GLOBALS['pixels'][$i];
if ($byte == $color) {
$cur += 8;
} else {
for ($bit = 0x80; $bit; $bit >>= 1) {
if (($byte & $bit ^ $bit & $color) == 0) {
++$cur;
} else {
$out .= $cur . ',';
$cur = 1;
$color ^= 0xff;
}
}
}
}
$out .= $cur . ']';
print $out;
exit;
}
