Pattern::fromString() - Code Metrics - Inspection of "Add getSize to RangeInterface" - mlocati/ip-lib - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#69)

by Michele

created 2021-05-31 09:23 UTC

Pattern::fromString() C

↳ Parent: Pattern

Complexity

Conditions	13
Paths	12

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	31
CRAP Score	13.0051

Importance

Changes

Metric	Value
dl	0
loc	46
ccs	31
cts	32
cp	0.9688
rs	6.6166
c	0
b	0
f	0
cc	13
nc	12
nop	2
crap	13.0051

How to fix Complexity

<?php

namespace IPLib\Range;

use IPLib\Address\AddressInterface;
use IPLib\Address\IPv4;
use IPLib\Address\IPv6;
use IPLib\Address\Type as AddressType;

/**
 * Represents an address range in pattern format (only ending asterisks are supported).
 *
 * @example 127.0.*.*
 * @example ::/8
 */
class Pattern extends AbstractRange
{
    /**
     * Starting address of the range.
     *
     * @var \IPLib\Address\AddressInterface
     */
    protected $fromAddress;

    /**
     * Final address of the range.
     *
     * @var \IPLib\Address\AddressInterface
     */
    protected $toAddress;

    /**
     * Number of ending asterisks.
     *
     * @var int
     */
    protected $asterisksCount;

    /**
     * The type of the range of this IP range.
     *
     * @var int|false|null false if this range crosses multiple range types, null if yet to be determined
     */
    protected $rangeType;

    /**
     * Initializes the instance.
     *
     * @param \IPLib\Address\AddressInterface $fromAddress
     * @param \IPLib\Address\AddressInterface $toAddress
     * @param int $asterisksCount
     */
    public function __construct(AddressInterface $fromAddress, AddressInterface $toAddress, $asterisksCount)
    {
        $this->fromAddress = $fromAddress;
        $this->toAddress = $toAddress;
        $this->asterisksCount = $asterisksCount;
    }

    /**
     * {@inheritdoc}
     *
     * @see \IPLib\Range\RangeInterface::__toString()
     */
    public function __toString()
    {
        return $this->toString();
    }

    /**
     * Try get the range instance starting from its string representation.
     *
     * @param string|mixed $range
     * @param bool $supportNonDecimalIPv4 set to true to support parsing non decimal (that is, octal and hexadecimal) IPv4 addresses
     *
     * @return static|null
     */
    public static function fromString($range, $supportNonDecimalIPv4 = false)
    {
        if (!is_string($range) || strpos($range, '*') === false) {
            return null;
        }
        if ($range === '*.*.*.*') {
            return new static(IPv4::fromString('0.0.0.0'), IPv4::fromString('255.255.255.255'), 4);
        }
        if ($range === '*:*:*:*:*:*:*:*') {
            return new static(IPv6::fromString('::'), IPv6::fromString('ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff'), 8);
        }
        $matches = null;
        if (strpos($range, '.') !== false && preg_match('/^[^*]+((?:\.\*)+)$/', $range, $matches)) {
            $asterisksCount = strlen($matches[1]) >> 1;
            if ($asterisksCount > 0) {
                $missingDots = 3 - substr_count($range, '.');
                if ($missingDots > 0) {
                    $range .= str_repeat('.*', $missingDots);
                    $asterisksCount += $missingDots;
                }
            }
            $fromAddress = IPv4::fromString(str_replace('*', '0', $range), true, $supportNonDecimalIPv4);
            if ($fromAddress === null) {
                return null;
            }
            $fixedBytes = array_slice($fromAddress->getBytes(), 0, -$asterisksCount);
            $otherBytes = array_fill(0, $asterisksCount, 255);
            $toAddress = IPv4::fromBytes(array_merge($fixedBytes, $otherBytes));

            return new static($fromAddress, $toAddress, $asterisksCount);
        }
        if (strpos($range, ':') !== false && preg_match('/^[^*]+((?::\*)+)$/', $range, $matches)) {
            $asterisksCount = strlen($matches[1]) >> 1;
            $fromAddress = IPv6::fromString(str_replace('*', '0', $range));
            if ($fromAddress === null) {
                return null;
            }
            $fixedWords = array_slice($fromAddress->getWords(), 0, -$asterisksCount);
            $otherWords = array_fill(0, $asterisksCount, 0xffff);
            $toAddress = IPv6::fromWords(array_merge($fixedWords, $otherWords));

            return new static($fromAddress, $toAddress, $asterisksCount);
        }

        return null;
    }

    /**
     * {@inheritdoc}
     *
     * @see \IPLib\Range\RangeInterface::toString()
     */
    public function toString($long = false)
    {
        if ($this->asterisksCount === 0) {
            return $this->fromAddress->toString($long);
        }
        switch (true) {
            case $this->fromAddress instanceof \IPLib\Address\IPv4:
                $chunks = explode('.', $this->fromAddress->toString());
                $chunks = array_slice($chunks, 0, -$this->asterisksCount);
                $chunks = array_pad($chunks, 4, '*');
                $result = implode('.', $chunks);
                break;
            case $this->fromAddress instanceof \IPLib\Address\IPv6:
                if ($long) {
                    $chunks = explode(':', $this->fromAddress->toString(true));
                    $chunks = array_slice($chunks, 0, -$this->asterisksCount);
                    $chunks = array_pad($chunks, 8, '*');
                    $result = implode(':', $chunks);
                } elseif ($this->asterisksCount === 8) {
                    $result = '*:*:*:*:*:*:*:*';
                } else {
                    $bytes = $this->toAddress->getBytes();
                    $bytes = array_slice($bytes, 0, -$this->asterisksCount * 2);
                    $bytes = array_pad($bytes, 16, 1);
                    $address = IPv6::fromBytes($bytes);
                    $before = substr($address->toString(false), 0, -strlen(':101') * $this->asterisksCount);
                    $result = $before . str_repeat(':*', $this->asterisksCount);
                }
                break;
            default:
                throw new \Exception('@todo'); // @codeCoverageIgnore
        }

        return $result;
    }

    /**
     * {@inheritdoc}
     *
     * @see \IPLib\Range\RangeInterface::getAddressType()
     */
    public function getAddressType()
    {
        return $this->fromAddress->getAddressType();
    }

    /**
     * {@inheritdoc}
     *
     * @see \IPLib\Range\RangeInterface::getStartAddress()
     */
    public function getStartAddress()
    {
        return $this->fromAddress;
    }

    /**
     * {@inheritdoc}
     *
     * @see \IPLib\Range\RangeInterface::getEndAddress()
     */
    public function getEndAddress()
    {
        return $this->toAddress;
    }

    /**
     * {@inheritdoc}
     *
     * @see \IPLib\Range\RangeInterface::getComparableStartString()
     */
    public function getComparableStartString()
    {
        return $this->fromAddress->getComparableString();
    }

    /**
     * {@inheritdoc}
     *
     * @see \IPLib\Range\RangeInterface::getComparableEndString()
     */
    public function getComparableEndString()
    {
        return $this->toAddress->getComparableString();
    }

    /**
     * {@inheritdoc}
     *
     * @see \IPLib\Range\RangeInterface::asSubnet()
     */
    public function asSubnet()
    {
        return new Subnet($this->getStartAddress(), $this->getEndAddress(), $this->getNetworkPrefix());
    }

    /**
     * {@inheritdoc}
     *
     * @see \IPLib\Range\RangeInterface::asPattern()
     */
    public function asPattern()
    {
        return $this;
    }

    /**
     * {@inheritdoc}
     *
     * @see \IPLib\Range\RangeInterface::getSubnetMask()
     */
    public function getSubnetMask()
    {
        if ($this->getAddressType() !== AddressType::T_IPv4) {
            return null;
        }
        switch ($this->asterisksCount) {
            case 0:
                $bytes = array(255, 255, 255, 255);
                break;
            case 4:
                $bytes = array(0, 0, 0, 0);
                break;
            default:
                $bytes = array_pad(array_fill(0, 4 - $this->asterisksCount, 255), 4, 0);
                break;
        }

        return IPv4::fromBytes($bytes);
    }

    /**
     * {@inheritdoc}
     *
     * @see \IPLib\Range\RangeInterface::getReverseDNSLookupName()
     */
    public function getReverseDNSLookupName()
    {
        return $this->asterisksCount === 0 ? array($this->getStartAddress()->getReverseDNSLookupName()) : $this->asSubnet()->getReverseDNSLookupName();
    }

    /**
     * {@inheritdoc}
     *
     * @see \IPLib\Range\RangeInterface::getSize()
     */
    public function getSize()

    {
        $fromAddress = $this->fromAddress;
        $maxPrefix = $fromAddress::getNumberOfBits();
        $prefix = $this->getNetworkPrefix();

        return pow(2, ($maxPrefix - $prefix));
    }

    /**
     * @return float|int
     */
    private function getNetworkPrefix()
    {
        switch ($this->getAddressType()) {
            case AddressType::T_IPv4:
                return 8 * (4 - $this->asterisksCount);
            case AddressType::T_IPv6:
                return 16 * (8 - $this->asterisksCount);
        }
    }
}


1			<?php
2
3			namespace IPLib\Range;
4
5			use IPLib\Address\AddressInterface;
6			use IPLib\Address\IPv4;
7			use IPLib\Address\IPv6;
8			use IPLib\Address\Type as AddressType;
9
10			/**
11			* Represents an address range in pattern format (only ending asterisks are supported).
12			*
13			* @example 127.0..
14			* @example ::/8
15			*/
16			class Pattern extends AbstractRange
17			{
18			/**
19			* Starting address of the range.
20			*
21			* @var \IPLib\Address\AddressInterface
22			*/
23			protected $fromAddress;
24
25			/**
26			* Final address of the range.
27			*
28			* @var \IPLib\Address\AddressInterface
29			*/
30			protected $toAddress;
31
32			/**
33			* Number of ending asterisks.
34			*
35			* @var int
36			*/
37			protected $asterisksCount;
38
39			/**
40			* The type of the range of this IP range.
41			*
42			* @var int\|false\|null false if this range crosses multiple range types, null if yet to be determined
43			*/
44			protected $rangeType;
45
46			/**
47			* Initializes the instance.
48			*
49			* @param \IPLib\Address\AddressInterface $fromAddress
50			* @param \IPLib\Address\AddressInterface $toAddress
51			* @param int $asterisksCount
52			*/
53	137		public function __construct(AddressInterface $fromAddress, AddressInterface $toAddress, $asterisksCount)
54			{
55	137		$this->fromAddress = $fromAddress;
56	137		$this->toAddress = $toAddress;
57	137		$this->asterisksCount = $asterisksCount;
58	137		}
59
60			/**
61			* {@inheritdoc}
62			*
63			* @see \IPLib\Range\RangeInterface::__toString()
64			*/
65	66		public function __toString()
66			{
67	66		return $this->toString();
68			}
69
70			/**
71			* Try get the range instance starting from its string representation.
72			*
73			* @param string\|mixed $range
74			* @param bool $supportNonDecimalIPv4 set to true to support parsing non decimal (that is, octal and hexadecimal) IPv4 addresses
75			*
76			* @return static\|null
77			*/
78	129		public static function fromString($range, $supportNonDecimalIPv4 = false)
79			{
80	129		if (!is_string($range) \|\| strpos($range, '*') === false) {
81	45		return null;
82			}
83	86		if ($range === '...') {
84	4		return new static(IPv4::fromString('0.0.0.0'), IPv4::fromString('255.255.255.255'), 4);
85			}
86	82		if ($range === ':::::::') {
87	2		return new static(IPv6::fromString('::'), IPv6::fromString('ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff'), 8);
88			}
89	80		$matches = null;
90	80		if (strpos($range, '.') !== false && preg_match('/^[^]+((?:\.\)+)$/', $range, $matches)) {
91	48		$asterisksCount = strlen($matches[1]) >> 1;
92	48		if ($asterisksCount > 0) {
93	48		$missingDots = 3 - substr_count($range, '.');
94	48		if ($missingDots > 0) {
95	2		$range .= str_repeat('.*', $missingDots);
96	2		$asterisksCount += $missingDots;
97			}
98			}
99	48		$fromAddress = IPv4::fromString(str_replace('*', '0', $range), true, $supportNonDecimalIPv4);
100	48		if ($fromAddress === null) {
101	1		return null;
102			}
103	47		$fixedBytes = array_slice($fromAddress->getBytes(), 0, -$asterisksCount);
104	47		$otherBytes = array_fill(0, $asterisksCount, 255);
105	47		$toAddress = IPv4::fromBytes(array_merge($fixedBytes, $otherBytes));
106
107	47		return new static($fromAddress, $toAddress, $asterisksCount);
108			}
109	32		if (strpos($range, ':') !== false && preg_match('/^[^]+((?::\)+)$/', $range, $matches)) {
110	28		$asterisksCount = strlen($matches[1]) >> 1;
111	28		$fromAddress = IPv6::fromString(str_replace('*', '0', $range));
112	28		if ($fromAddress === null) {
113			return null;
114			}
115	28		$fixedWords = array_slice($fromAddress->getWords(), 0, -$asterisksCount);
116	28		$otherWords = array_fill(0, $asterisksCount, 0xffff);
117	28		$toAddress = IPv6::fromWords(array_merge($fixedWords, $otherWords));
118
119	28		return new static($fromAddress, $toAddress, $asterisksCount);
120			}
121
122	4		return null;
123			}
124
125			/**
126			* {@inheritdoc}
127			*
128			* @see \IPLib\Range\RangeInterface::toString()
129			*/
130	112		public function toString($long = false)
131			{
132	112		if ($this->asterisksCount === 0) {
133	56		return $this->fromAddress->toString($long);
134			}
135			switch (true) {
136	68		case $this->fromAddress instanceof \IPLib\Address\IPv4:
137	42		$chunks = explode('.', $this->fromAddress->toString());
138	42		$chunks = array_slice($chunks, 0, -$this->asterisksCount);
139	42		$chunks = array_pad($chunks, 4, '*');
140	42		$result = implode('.', $chunks);
141	42		break;
142	26		case $this->fromAddress instanceof \IPLib\Address\IPv6:
143	26		if ($long) {
144	6		$chunks = explode(':', $this->fromAddress->toString(true));
145	6		$chunks = array_slice($chunks, 0, -$this->asterisksCount);
146	6		$chunks = array_pad($chunks, 8, '*');
147	6		$result = implode(':', $chunks);
148	26		} elseif ($this->asterisksCount === 8) {
149	2		$result = ':::::::';
150			} else {
151	24		$bytes = $this->toAddress->getBytes();
152	24		$bytes = array_slice($bytes, 0, -$this->asterisksCount * 2);
153	24		$bytes = array_pad($bytes, 16, 1);
154	24		$address = IPv6::fromBytes($bytes);
155	24		$before = substr($address->toString(false), 0, -strlen(':101') * $this->asterisksCount);
156	24		$result = $before . str_repeat(':*', $this->asterisksCount);
157			}
158	26		break;
159			default:
160			throw new \Exception('@todo'); // @codeCoverageIgnore
161			}
162
163	68		return $result;
164			}
165
166			/**
167			* {@inheritdoc}
168			*
169			* @see \IPLib\Range\RangeInterface::getAddressType()
170			*/
171	66		public function getAddressType()
172			{
173	66		return $this->fromAddress->getAddressType();
174			}
175
176			/**
177			* {@inheritdoc}
178			*
179			* @see \IPLib\Range\RangeInterface::getStartAddress()
180			*/
181	30		public function getStartAddress()
182			{
183	30		return $this->fromAddress;
184			}
185
186			/**
187			* {@inheritdoc}
188			*
189			* @see \IPLib\Range\RangeInterface::getEndAddress()
190			*/
191	30		public function getEndAddress()
192			{
193	30		return $this->toAddress;
194			}
195
196			/**
197			* {@inheritdoc}
198			*
199			* @see \IPLib\Range\RangeInterface::getComparableStartString()
200			*/
201	34		public function getComparableStartString()
202			{
203	34		return $this->fromAddress->getComparableString();
204			}
205
206			/**
207			* {@inheritdoc}
208			*
209			* @see \IPLib\Range\RangeInterface::getComparableEndString()
210			*/
211	34		public function getComparableEndString()
212			{
213	34		return $this->toAddress->getComparableString();
214			}
215
216			/**
217			* {@inheritdoc}
218			*
219			* @see \IPLib\Range\RangeInterface::asSubnet()
220			*/
221	26		public function asSubnet()
222			{
223	26		return new Subnet($this->getStartAddress(), $this->getEndAddress(), $this->getNetworkPrefix());
224			}
225	9
226			/**
227	17		* {@inheritdoc}
228			*
229			* @see \IPLib\Range\RangeInterface::asPattern()
230			*/
231			public function asPattern()
232			{
233			return $this;
234			}
235
236	14		/**
237			* {@inheritdoc}
238	14		*
239			* @see \IPLib\Range\RangeInterface::getSubnetMask()
240			*/
241			public function getSubnetMask()
242			{
243			if ($this->getAddressType() !== AddressType::T_IPv4) {
244			return null;
245			}
246	5		switch ($this->asterisksCount) {
247			case 0:
248	5		$bytes = array(255, 255, 255, 255);
249	1		break;
250			case 4:
251	4		$bytes = array(0, 0, 0, 0);
252	4		break;
253			default:
254			$bytes = array_pad(array_fill(0, 4 - $this->asterisksCount, 255), 4, 0);
255	4		break;
256	1		}
257	1
258			return IPv4::fromBytes($bytes);
259	3		}
260	3
261			/**
262			* {@inheritdoc}
263	4		*
264			* @see \IPLib\Range\RangeInterface::getReverseDNSLookupName()
265			*/
266			public function getReverseDNSLookupName()
267			{
268			return $this->asterisksCount === 0 ? array($this->getStartAddress()->getReverseDNSLookupName()) : $this->asSubnet()->getReverseDNSLookupName();
269			}
270
271	12		/**
272			* {@inheritdoc}
273	12		*
274			* @see \IPLib\Range\RangeInterface::getSize()
275			*/
276		View Code Duplication	public function getSize()
			0 ignored issues – show Duplication introduced 2021-05-30 16:57 UTC by Report Bug Copy Issue Report This method seems to be duplicated in your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
277			{
278			$fromAddress = $this->fromAddress;
279			$maxPrefix = $fromAddress::getNumberOfBits();
280			$prefix = $this->getNetworkPrefix();
281
282			return pow(2, ($maxPrefix - $prefix));
283			}
284
285			/**
286			* @return float\|int
287			*/
288			private function getNetworkPrefix()
289			{
290			switch ($this->getAddressType()) {
291			case AddressType::T_IPv4:
292			return 8 * (4 - $this->asterisksCount);
293			case AddressType::T_IPv6:
294			return 16 * (8 - $this->asterisksCount);
295			}
296			}
297			}
298

mlocati / ip-lib

Pull Request — master (#69)

Pattern::fromString() C

Complexity

Size

Duplication

Code Coverage

Importance

How to fix Complexity

Long Method

Duplication Side-by-Side

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