117 lines
3.1 KiB
PHP
117 lines
3.1 KiB
PHP
<?php
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declare(strict_types=1);
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/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2018 Spomky-Labs
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*
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* This software may be modified and distributed under the terms
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* of the MIT license. See the LICENSE file for details.
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*/
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namespace CBOR;
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use InvalidArgumentException;
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final class UnsignedIntegerObject extends AbstractCBORObject
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{
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private const MAJOR_TYPE = 0b000;
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/**
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* @var string|null
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*/
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private $data;
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public function __construct(int $additionalInformation, ?string $data)
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{
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parent::__construct(self::MAJOR_TYPE, $additionalInformation);
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$this->data = $data;
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}
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public static function createObjectForValue(int $additionalInformation, ?string $data): self
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{
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return new self($additionalInformation, $data);
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}
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public static function create(int $value): self
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{
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return self::createFromGmpValue(gmp_init($value));
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}
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public static function createFromGmpValue(\GMP $value): self
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{
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if (gmp_cmp($value, gmp_init(0)) < 0) {
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throw new InvalidArgumentException('The value must be a positive integer.');
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}
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switch (true) {
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case gmp_cmp($value, gmp_init(24)) < 0:
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$ai = gmp_intval($value);
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$data = null;
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break;
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case gmp_cmp($value, gmp_init('FF', 16)) < 0:
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$ai = 24;
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$data = self::hex2bin(str_pad(gmp_strval($value, 16), 2, '0', STR_PAD_LEFT));
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break;
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case gmp_cmp($value, gmp_init('FFFF', 16)) < 0:
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$ai = 25;
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$data = self::hex2bin(str_pad(gmp_strval($value, 16), 4, '0', STR_PAD_LEFT));
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break;
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case gmp_cmp($value, gmp_init('FFFFFFFF', 16)) < 0:
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$ai = 26;
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$data = self::hex2bin(str_pad(gmp_strval($value, 16), 8, '0', STR_PAD_LEFT));
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break;
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default:
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throw new InvalidArgumentException('Out of range. Please use PositiveBigIntegerTag tag with ByteStringObject object instead.');
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}
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return new self($ai, $data);
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}
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public function getMajorType(): int
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{
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return self::MAJOR_TYPE;
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}
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public function getAdditionalInformation(): int
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{
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return $this->additionalInformation;
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}
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public function getValue(): string
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{
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return $this->getNormalizedData();
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}
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public function getNormalizedData(bool $ignoreTags = false): string
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{
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if (null === $this->data) {
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return \strval($this->additionalInformation);
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}
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return gmp_strval(gmp_init(bin2hex($this->data), 16), 10);
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}
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public function __toString(): string
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{
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$result = parent::__toString();
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if (null !== $this->data) {
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$result .= $this->data;
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}
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return $result;
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}
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private static function hex2bin(string $data): string
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{
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$result = hex2bin($data);
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if (false === $result) {
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throw new InvalidArgumentException('Unable to convert the data');
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}
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return $result;
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}
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}
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