Extremlym |
18th July 2017 21:38 |
new benc
Code:
//// https://extremlymtorrents.ws
function benc($obj) {
if (!is_array($obj) || !isset($obj["type"]) || !isset($obj["value"]))
return;
$c = $obj["value"];
switch ($obj["type"]) {
case "string":
return benc_str($c);
case "integer":
return benc_int($c);
case "list":
return benc_list($c);
case "dictionary":
return benc_dict($c);
default:
return;
}
}
function hash_where_arr($name, $hash_arr) {
$new_hash_arr = Array();
foreach ($hash_arr as $hash) {
$new_hash_arr[] = sqlesc((urldecode($hash)));
}
return $name." IN ( ".implode(", ",$new_hash_arr)." )";
}
function benc_str($s) {
return strlen($s) . ":$s";
}
function benc_int($i) {
return "i" . $i . "e";
}
function benc_list($a) {
$s = "l";
foreach ($a as $e) {
$s .= benc($e);
}
$s .= "e";
return $s;
}
function benc_dict($d) {
$s = "d";
$keys = array_keys($d);
sort($keys);
foreach ($keys as $k) {
$v = $d[$k];
$s .= benc_str($k);
$s .= benc($v);
}
$s .= "e";
return $s;
}
function bdec_file($f, $ms) {
$fp = fopen($f, "rb");
if (!$fp)
return;
$e = fread($fp, $ms);
fclose($fp);
return bdec($e);
}
function bdec($s) {
if (preg_match('/^(\d+):/', $s, $m)) {
$l = $m[1];
$pl = strlen($l) + 1;
$v = substr($s, $pl, $l);
$ss = substr($s, 0, $pl + $l);
if (strlen($v) != $l)
return;
return array(type => "string", value => $v, strlen => strlen($ss), string => $ss);
}
if (preg_match('/^i(-{0,1}\d+)e/', $s, $m)) {
$v = $m[1];
$ss = "i" . $v . "e";
if ($v === "-0")
return;
if ($v[0] == "0" && strlen($v) != 1)
return;
return array(type => "integer", value => $v, strlen => strlen($ss), string => $ss);
}
switch ($s[0]) {
case "l":
return bdec_list($s);
case "d":
return bdec_dict($s);
default:
return;
}
}
function bdec_list($s) {
if ($s[0] != "l")
return;
$sl = strlen($s);
$i = 1;
$v = array();
$ss = "l";
for (;;) {
if ($i >= $sl)
return;
if ($s[$i] == "e")
break;
$ret = bdec(substr($s, $i));
if (!isset($ret) || !is_array($ret))
return;
$v[] = $ret;
$i += $ret["strlen"];
$ss .= $ret["string"];
}
$ss .= "e";
return array(type => "list", value => $v, strlen => strlen($ss), string => $ss);
}
function bdec_dict($s) {
if ($s[0] != "d")
return;
$sl = strlen($s);
$i = 1;
$v = array();
$ss = "d";
for (;;) {
if ($i >= $sl)
return;
if ($s[$i] == "e")
break;
$ret = bdec(substr($s, $i));
if (!isset($ret) || !is_array($ret) || $ret["type"] != "string")
return;
$k = $ret["value"];
$i += $ret["strlen"];
$ss .= $ret["string"];
if ($i >= $sl)
return;
$ret = bdec(substr($s, $i));
if (!isset($ret) || !is_array($ret))
return;
$v[$k] = $ret;
$i += $ret["strlen"];
$ss .= $ret["string"];
}
$ss .= "e";
return array(type => "dictionary", value => $v, strlen => strlen($ss), string => $ss);
}
?>
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