<?php

namespace app\extra\ip2region\xdb;

const IPv6VersionNo    = 6;

class IPv6
{

    public $id;
    public $name;
    public $bytes;
    public $segmentIndexSize;

    private static $C = null;
    public static function default() {
        if (self::$C == null) {
            // 38 = 16 + 16 + 2 + 4
            self::$C = new self(IPv6VersionNo, 'IPv6', 16, 38);
        }

        return self::$C;
    }

    public function __construct($id, $name, $bytes, $segmentIndexSize) {
        $this->id = $id;
        $this->name = $name;
        $this->bytes = $bytes;
        $this->segmentIndexSize = $segmentIndexSize;
    }

    public function ipSubCompare($ip, $buff, $offset) {
        // return Util::ipCompare($ip, substr($buff, $offset, strlen($ip)));
        return SearchIp::ipSubCompare($ip, $buff, $offset);
    }

    public function __toString() {
        return sprintf(
            "{id:%d, name:%s, bytes:%d, segmentIndexSize:%d}",
            $this->id, $this->name, $this->bytes, $this->segmentIndexSize
        );
    }
}