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Original file line number | Diff line number | Diff line change |
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<?php | ||
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declare(strict_types=1); | ||
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/* | ||
* The MIT License (MIT) | ||
* | ||
* Copyright (c) 2018-2020 Spomky-Labs | ||
* | ||
* This software may be modified and distributed under the terms | ||
* of the MIT license. See the LICENSE file for details. | ||
*/ | ||
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namespace CBOR; | ||
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use Brick\Math\BigInteger; | ||
use InvalidArgumentException; | ||
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/** | ||
* @final | ||
*/ | ||
class NegativeIntegerObject extends AbstractCBORObject | ||
{ | ||
private const MAJOR_TYPE = 0b001; | ||
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/** | ||
* @var string|null | ||
*/ | ||
private $data; | ||
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public function __construct(int $additionalInformation, ?string $data) | ||
{ | ||
parent::__construct(self::MAJOR_TYPE, $additionalInformation); | ||
$this->data = $data; | ||
} | ||
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public function __toString(): string | ||
{ | ||
$result = parent::__toString(); | ||
if (null !== $this->data) { | ||
$result .= $this->data; | ||
} | ||
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return $result; | ||
} | ||
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public static function createObjectForValue(int $additionalInformation, ?string $data): self | ||
{ | ||
return new self($additionalInformation, $data); | ||
} | ||
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public static function create(int $value): self | ||
{ | ||
return self::createFromString((string) $value); | ||
} | ||
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public static function createFromString(string $value): self | ||
{ | ||
$integer = BigInteger::of($value); | ||
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return self::createBigInteger($integer); | ||
} | ||
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public function getValue(): string | ||
{ | ||
return $this->getNormalizedData(); | ||
} | ||
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public function getNormalizedData(bool $ignoreTags = false): string | ||
{ | ||
if (null === $this->data) { | ||
return (string) (-1 - $this->additionalInformation); | ||
} | ||
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$result = Utils::binToBigInteger($this->data); | ||
$minusOne = BigInteger::of(-1); | ||
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return $minusOne->minus($result)->toBase(10); | ||
} | ||
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private static function createBigInteger(BigInteger $integer): self | ||
{ | ||
if ($integer->isGreaterThanOrEqualTo(BigInteger::zero())) { | ||
throw new InvalidArgumentException('The value must be a negative integer.'); | ||
} | ||
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$minusOne = BigInteger::of(-1); | ||
$computed_value = $minusOne->minus($integer); | ||
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switch (true) { | ||
case $computed_value->isLessThan(BigInteger::of(24)): | ||
$ai = $computed_value->toInt(); | ||
$data = null; | ||
break; | ||
case $computed_value->isLessThan(BigInteger::fromBase('FF', 16)): | ||
$ai = 24; | ||
$data = self::hex2bin(str_pad($computed_value->toBase(16), 2, '0', STR_PAD_LEFT)); | ||
break; | ||
case $computed_value->isLessThan(BigInteger::fromBase('FFFF', 16)): | ||
$ai = 25; | ||
$data = self::hex2bin(str_pad($computed_value->toBase(16), 4, '0', STR_PAD_LEFT)); | ||
break; | ||
case $computed_value->isLessThan(BigInteger::fromBase('FFFFFFFF', 16)): | ||
$ai = 26; | ||
$data = self::hex2bin(str_pad($computed_value->toBase(16), 8, '0', STR_PAD_LEFT)); | ||
break; | ||
default: | ||
throw new InvalidArgumentException('Out of range. Please use NegativeBigIntegerTag tag with ByteStringObject object instead.'); | ||
} | ||
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return new self($ai, $data); | ||
} | ||
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private static function hex2bin(string $data): string | ||
{ | ||
$result = hex2bin($data); | ||
if (false === $result) { | ||
throw new InvalidArgumentException('Unable to convert the data'); | ||
} | ||
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return $result; | ||
} | ||
} |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,131 @@ | ||
<?php | ||
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declare(strict_types=1); | ||
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/* | ||
* The MIT License (MIT) | ||
* | ||
* Copyright (c) 2018-2020 Spomky-Labs | ||
* | ||
* This software may be modified and distributed under the terms | ||
* of the MIT license. See the LICENSE file for details. | ||
*/ | ||
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namespace CBOR; | ||
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use Brick\Math\BigInteger; | ||
use InvalidArgumentException; | ||
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/** | ||
* @final | ||
*/ | ||
class PositiveIntegerObject extends AbstractCBORObject | ||
{ | ||
private const MAJOR_TYPE = 0b000; | ||
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/** | ||
* @var string|null | ||
*/ | ||
private $data; | ||
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public function __construct(int $additionalInformation, ?string $data) | ||
{ | ||
parent::__construct(self::MAJOR_TYPE, $additionalInformation); | ||
$this->data = $data; | ||
} | ||
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public function __toString(): string | ||
{ | ||
$result = parent::__toString(); | ||
if (null !== $this->data) { | ||
$result .= $this->data; | ||
} | ||
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return $result; | ||
} | ||
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public static function createObjectForValue(int $additionalInformation, ?string $data): self | ||
{ | ||
return new self($additionalInformation, $data); | ||
} | ||
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public static function create(int $value): self | ||
{ | ||
return self::createFromString((string) $value); | ||
} | ||
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public static function createFromHex(string $value): self | ||
{ | ||
$integer = BigInteger::fromBase($value, 16); | ||
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return self::createBigInteger($integer); | ||
} | ||
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public static function createFromString(string $value): self | ||
{ | ||
$integer = BigInteger::of($value); | ||
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return self::createBigInteger($integer); | ||
} | ||
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public function getMajorType(): int | ||
{ | ||
return self::MAJOR_TYPE; | ||
} | ||
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public function getValue(): string | ||
{ | ||
return $this->getNormalizedData(); | ||
} | ||
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public function getNormalizedData(bool $ignoreTags = false): string | ||
{ | ||
if (null === $this->data) { | ||
return (string) $this->additionalInformation; | ||
} | ||
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$integer = BigInteger::fromBase(bin2hex($this->data), 16); | ||
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return $integer->toBase(10); | ||
} | ||
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private static function createBigInteger(BigInteger $integer): self | ||
{ | ||
if ($integer->isLessThan(BigInteger::zero())) { | ||
throw new InvalidArgumentException('The value must be a positive integer.'); | ||
} | ||
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switch (true) { | ||
case $integer->isLessThan(BigInteger::of(24)): | ||
$ai = $integer->toInt(); | ||
$data = null; | ||
break; | ||
case $integer->isLessThan(BigInteger::fromBase('FF', 16)): | ||
$ai = 24; | ||
$data = self::hex2bin(str_pad($integer->toBase(16), 2, '0', STR_PAD_LEFT)); | ||
break; | ||
case $integer->isLessThan(BigInteger::fromBase('FFFF', 16)): | ||
$ai = 25; | ||
$data = self::hex2bin(str_pad($integer->toBase(16), 4, '0', STR_PAD_LEFT)); | ||
break; | ||
case $integer->isLessThan(BigInteger::fromBase('FFFFFFFF', 16)): | ||
$ai = 26; | ||
$data = self::hex2bin(str_pad($integer->toBase(16), 8, '0', STR_PAD_LEFT)); | ||
break; | ||
default: | ||
throw new InvalidArgumentException('Out of range. Please use PositiveBigIntegerTag tag with ByteStringObject object instead.'); | ||
} | ||
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return new self($ai, $data); | ||
} | ||
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private static function hex2bin(string $data): string | ||
{ | ||
$result = hex2bin($data); | ||
if (false === $result) { | ||
throw new InvalidArgumentException('Unable to convert the data'); | ||
} | ||
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return $result; | ||
} | ||
} |
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