UserAgentParser::client() - Code Metrics - Inspection of "Optimized for increased performance + better rende..." - VIPnytt/RobotsTxtParser - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 0591fe...b215f8 )

by Jan-Petter

created 2016-08-10 13:08 UTC

UserAgentParser::client() B

↳ Parent: UserAgentParser

Complexity

Conditions	5
Paths	8

Size

Total Lines	16
Code Lines	10

Duplication

Lines	0
Ratio	0 %

Importance

Changes	2
Bugs	0	Features	0

Metric	Value
c	2
b	0
f	0
dl	0
loc	16
rs	8.8571
cc	5
eloc	10
nc	8
nop	3

<?php
/**
 * vipnytt/RobotsTxtParser
 *
 * @link https://github.com/VIPnytt/RobotsTxtParser
 * @license https://github.com/VIPnytt/RobotsTxtParser/blob/master/LICENSE The MIT License (MIT)
 */

namespace vipnytt\RobotsTxtParser\Parser\Directives;

use vipnytt\RobotsTxtParser\Client\Directives\UserAgentClient;
use vipnytt\RobotsTxtParser\Handler\Directives\SubDirectiveHandler;
use vipnytt\RobotsTxtParser\Handler\RenderHandler;
use vipnytt\RobotsTxtParser\RobotsTxtInterface;
use vipnytt\UserAgentParser as UserAgentStringParser;

/**
 * Class UserAgentParser
 *
 * @package vipnytt\RobotsTxtParser\Parser\Directives
 */
class UserAgentParser implements ParserInterface, RobotsTxtInterface
{
    use DirectiveParserTrait;

    /**
     * Sub directives white list
     */
    const SUB_DIRECTIVES = [
        self::DIRECTIVE_ALLOW => 'allow',
        self::DIRECTIVE_CACHE_DELAY => 'cacheDelay',
        self::DIRECTIVE_COMMENT => 'comment',
        self::DIRECTIVE_CRAWL_DELAY => 'crawlDelay',
        self::DIRECTIVE_DISALLOW => 'disallow',
        self::DIRECTIVE_NO_INDEX => 'noindex',
        self::DIRECTIVE_REQUEST_RATE => 'requestRate',
        self::DIRECTIVE_ROBOT_VERSION => 'robotVersion',
        self::DIRECTIVE_VISIT_TIME => 'visitTime',
    ];

    /**
     * Base uri
     * @var string
     */
    private $base;

    /**
     * Effective uri
     * @var string
     */
    private $effective;

    /**
     * User-agent handler
     * @var SubDirectiveHandler[]
     */
    private $handler = [];

    /**
     * Current User-agent(s)
     * @var string[]
     */
    private $current = [];

    /**
     * Append User-agent
     * @var bool
     */
    private $append = false;

    /**
     * User-agent directive count
     * @var int[]
     */
    private $count = [];

    /**
     * User-agent client cache
     * @var UserAgentClient[]
     */
    private $client = [];

    /**
     * UserAgent constructor.
     *
     * @param string $base
     * @param string $effective
     */
    public function __construct($base, $effective)
    {
        $this->base = $base;
        $this->effective = $effective;
        $this->set(self::USER_AGENT);
        $this->append = false;
    }

    /**
     * Set new User-agent
     *
     * @param string $userAgent
     * @return bool
     */
    private function set($userAgent)
    {
        if (!$this->append) {
            $this->current = [];
        }
        $userAgent = mb_strtolower($userAgent);
        if (in_array(self::USER_AGENT, array_merge($this->current, [$userAgent]))) {
            $this->current = [];
            $userAgent = self::USER_AGENT;
        }
        $this->current[] = $userAgent;
        if (!in_array($userAgent, array_keys($this->handler))) {
            $this->handler[$userAgent] = new SubDirectiveHandler($this->base, $this->effective, $userAgent);
            $this->count[$userAgent] = 0;
        }
        $this->append = true;
        return true;
    }

    /**
     * Add
     *
     * @param string $line
     * @return bool
     */
    public function add($line)
    {
        if (($pair = $this->generateRulePair($line, array_merge([self::DIRECTIVE_USER_AGENT], array_keys(self::SUB_DIRECTIVES)))) === false) {
            $this->append = false;
            return false;
        }
        if ($pair['directive'] === self::DIRECTIVE_USER_AGENT) {
            return $this->set($pair['value']);
        }
        $this->append = false;
        $result = [];
        foreach ($this->current as $userAgent) {
            $result[] = $this->handler[$userAgent]->{self::SUB_DIRECTIVES[$pair['directive']]}()->add($pair['value']);
            $this->count[$userAgent]++;
        }
        return in_array(true, $result, true);
    }

    /**
     * Render
     *
     * @param RenderHandler $handler
     * @return bool
     */
    public function render(RenderHandler $handler)
    {
        return $handler->getLevel() >= 3 ? $this->renderExtensive($handler) : $this->renderCompressed($handler);
    }

    /**
     * Render extensive
     *
     * @param RenderHandler $handler
     * @return bool
     */
    private function renderExtensive(RenderHandler $handler)
    {
        $userAgents = $this->getUserAgents();
        rsort($userAgents);
        foreach ($userAgents as $userAgent) {
            $handler->add(self::DIRECTIVE_USER_AGENT, $userAgent);
            $this->renderAdd($userAgent, $handler);
        }
        return true;
    }

    /**
     * User-agent list
     *
     * @return string[]
     */
    public function getUserAgents()
    {
        $list = array_keys(array_filter($this->count));
        sort($list);
        return $list;
    }

    private function renderAdd($userAgent, RenderHandler $handler)
    {
        $this->handler[$userAgent]->robotVersion()->render($handler);
        $this->handler[$userAgent]->visitTime()->render($handler);
        $this->handler[$userAgent]->noIndex()->render($handler);
        $this->handler[$userAgent]->disallow()->render($handler);
        $this->handler[$userAgent]->allow()->render($handler);
        $this->handler[$userAgent]->crawlDelay()->render($handler);
        $this->handler[$userAgent]->cacheDelay()->render($handler);
        $this->handler[$userAgent]->requestRate()->render($handler);
        $this->handler[$userAgent]->comment()->render($handler);
    }

    /**
     * Render compressed
     *
     * @param RenderHandler $handler
     * @return bool
     */
    private function renderCompressed(RenderHandler $handler)
    {
        $pair = $this->export();
        while (!empty($pair)) {
            $groupMembers = current($pair);
            foreach (array_keys($pair, $groupMembers) as $userAgent) {
                $handler->add(self::DIRECTIVE_USER_AGENT, $userAgent);
                unset($pair[$userAgent]);
            }
            if (isset($userAgent)) {
                $this->renderAdd($userAgent, $handler);
                unset($userAgent);
            }
        }
        return true;
    }

    /**
     * Export
     *
     * @return array
     */
    public function export()
    {
        $array = [];
        foreach ($this->getUserAgents() as $userAgent) {
            $array[$userAgent] = $this->client($userAgent)->export();
        }
        return $array;
    }

    /**
     * Client
     *
     * @param string $product
     * @param float|int|string|null $version
     * @param int|null $statusCode
     * @return UserAgentClient
     */
    public function client($product = self::USER_AGENT, $version = null, $statusCode = null)
    {
        $userAgentString = $version === null ? $product : $product . '/' . $version;
        if (isset($this->client[$userAgentString])) {
            // Already cached
            return $this->client[$userAgentString];
        } elseif (isset($this->handler[$userAgentString])) {
            // 100% match
            return $this->client[$userAgentString] = new UserAgentClient($this->handler[$userAgentString], $this->base, $statusCode, $product);
        }
        $userAgentParser = new UserAgentStringParser($product, $version);
        if (($match = $userAgentParser->getMostSpecific($this->getUserAgents())) === false) {
            $match = self::USER_AGENT;
        }
        return $this->client[$userAgentString] = new UserAgentClient($this->handler[$match], $this->base, $statusCode, $product);
    }
}


1			<?php
2			/**
3			* vipnytt/RobotsTxtParser
4			*
5			* @link https://github.com/VIPnytt/RobotsTxtParser
6			* @license https://github.com/VIPnytt/RobotsTxtParser/blob/master/LICENSE The MIT License (MIT)
7			*/
8
9			namespace vipnytt\RobotsTxtParser\Parser\Directives;
10
11			use vipnytt\RobotsTxtParser\Client\Directives\UserAgentClient;
12			use vipnytt\RobotsTxtParser\Handler\Directives\SubDirectiveHandler;
13			use vipnytt\RobotsTxtParser\Handler\RenderHandler;
14			use vipnytt\RobotsTxtParser\RobotsTxtInterface;
15			use vipnytt\UserAgentParser as UserAgentStringParser;
16
17			/**
18			* Class UserAgentParser
19			*
20			* @package vipnytt\RobotsTxtParser\Parser\Directives
21			*/
22			class UserAgentParser implements ParserInterface, RobotsTxtInterface
23			{
24			use DirectiveParserTrait;
25
26			/**
27			* Sub directives white list
28			*/
29			const SUB_DIRECTIVES = [
30			self::DIRECTIVE_ALLOW => 'allow',
31			self::DIRECTIVE_CACHE_DELAY => 'cacheDelay',
32			self::DIRECTIVE_COMMENT => 'comment',
33			self::DIRECTIVE_CRAWL_DELAY => 'crawlDelay',
34			self::DIRECTIVE_DISALLOW => 'disallow',
35			self::DIRECTIVE_NO_INDEX => 'noindex',
36			self::DIRECTIVE_REQUEST_RATE => 'requestRate',
37			self::DIRECTIVE_ROBOT_VERSION => 'robotVersion',
38			self::DIRECTIVE_VISIT_TIME => 'visitTime',
39			];
40
41			/**
42			* Base uri
43			* @var string
44			*/
45			private $base;
46
47			/**
48			* Effective uri
49			* @var string
50			*/
51			private $effective;
52
53			/**
54			* User-agent handler
55			* @var SubDirectiveHandler[]
56			*/
57			private $handler = [];
58
59			/**
60			* Current User-agent(s)
61			* @var string[]
62			*/
63			private $current = [];
64
65			/**
66			* Append User-agent
67			* @var bool
68			*/
69			private $append = false;
70
71			/**
72			* User-agent directive count
73			* @var int[]
74			*/
75			private $count = [];
76
77			/**
78			* User-agent client cache
79			* @var UserAgentClient[]
80			*/
81			private $client = [];
82
83			/**
84			* UserAgent constructor.
85			*
86			* @param string $base
87			* @param string $effective
88			*/
89			public function __construct($base, $effective)
90			{
91			$this->base = $base;
92			$this->effective = $effective;
93			$this->set(self::USER_AGENT);
94			$this->append = false;
95			}
96
97			/**
98			* Set new User-agent
99			*
100			* @param string $userAgent
101			* @return bool
102			*/
103			private function set($userAgent)
104			{
105			if (!$this->append) {
106			$this->current = [];
107			}
108			$userAgent = mb_strtolower($userAgent);
109			if (in_array(self::USER_AGENT, array_merge($this->current, [$userAgent]))) {
110			$this->current = [];
111			$userAgent = self::USER_AGENT;
112			}
113			$this->current[] = $userAgent;
114			if (!in_array($userAgent, array_keys($this->handler))) {
115			$this->handler[$userAgent] = new SubDirectiveHandler($this->base, $this->effective, $userAgent);
116			$this->count[$userAgent] = 0;
117			}
118			$this->append = true;
119			return true;
120			}
121
122			/**
123			* Add
124			*
125			* @param string $line
126			* @return bool
127			*/
128			public function add($line)
129			{
130			if (($pair = $this->generateRulePair($line, array_merge([self::DIRECTIVE_USER_AGENT], array_keys(self::SUB_DIRECTIVES)))) === false) {
131			$this->append = false;
132			return false;
133			}
134			if ($pair['directive'] === self::DIRECTIVE_USER_AGENT) {
135			return $this->set($pair['value']);
136			}
137			$this->append = false;
138			$result = [];
139			foreach ($this->current as $userAgent) {
140			$result[] = $this->handler[$userAgent]->{self::SUB_DIRECTIVES[$pair['directive']]}()->add($pair['value']);
141			$this->count[$userAgent]++;
142			}
143			return in_array(true, $result, true);
144			}
145
146			/**
147			* Render
148			*
149			* @param RenderHandler $handler
150			* @return bool
151			*/
152			public function render(RenderHandler $handler)
153			{
154			return $handler->getLevel() >= 3 ? $this->renderExtensive($handler) : $this->renderCompressed($handler);
155			}
156
157			/**
158			* Render extensive
159			*
160			* @param RenderHandler $handler
161			* @return bool
162			*/
163			private function renderExtensive(RenderHandler $handler)
164			{
165			$userAgents = $this->getUserAgents();
166			rsort($userAgents);
167			foreach ($userAgents as $userAgent) {
168			$handler->add(self::DIRECTIVE_USER_AGENT, $userAgent);
169			$this->renderAdd($userAgent, $handler);
170			}
171			return true;
172			}
173
174			/**
175			* User-agent list
176			*
177			* @return string[]
178			*/
179			public function getUserAgents()
180			{
181			$list = array_keys(array_filter($this->count));
182			sort($list);
183			return $list;
184			}
185
186			private function renderAdd($userAgent, RenderHandler $handler)
187			{
188			$this->handler[$userAgent]->robotVersion()->render($handler);
189			$this->handler[$userAgent]->visitTime()->render($handler);
190			$this->handler[$userAgent]->noIndex()->render($handler);
191			$this->handler[$userAgent]->disallow()->render($handler);
192			$this->handler[$userAgent]->allow()->render($handler);
193			$this->handler[$userAgent]->crawlDelay()->render($handler);
194			$this->handler[$userAgent]->cacheDelay()->render($handler);
195			$this->handler[$userAgent]->requestRate()->render($handler);
196			$this->handler[$userAgent]->comment()->render($handler);
197			}
198
199			/**
200			* Render compressed
201			*
202			* @param RenderHandler $handler
203			* @return bool
204			*/
205			private function renderCompressed(RenderHandler $handler)
206			{
207			$pair = $this->export();
208			while (!empty($pair)) {
209			$groupMembers = current($pair);
210			foreach (array_keys($pair, $groupMembers) as $userAgent) {
211			$handler->add(self::DIRECTIVE_USER_AGENT, $userAgent);
212			unset($pair[$userAgent]);
213			}
214			if (isset($userAgent)) {
215			$this->renderAdd($userAgent, $handler);
216			unset($userAgent);
217			}
218			}
219			return true;
220			}
221
222			/**
223			* Export
224			*
225			* @return array
226			*/
227			public function export()
228			{
229			$array = [];
230			foreach ($this->getUserAgents() as $userAgent) {
231			$array[$userAgent] = $this->client($userAgent)->export();
232			}
233			return $array;
234			}
235
236			/**
237			* Client
238			*
239			* @param string $product
240			* @param float\|int\|string\|null $version
241			* @param int\|null $statusCode
242			* @return UserAgentClient
243			*/
244			public function client($product = self::USER_AGENT, $version = null, $statusCode = null)
245			{
246			$userAgentString = $version === null ? $product : $product . '/' . $version;
247			if (isset($this->client[$userAgentString])) {
248			// Already cached
249			return $this->client[$userAgentString];
250			} elseif (isset($this->handler[$userAgentString])) {
251			// 100% match
252			return $this->client[$userAgentString] = new UserAgentClient($this->handler[$userAgentString], $this->base, $statusCode, $product);
253			}
254			$userAgentParser = new UserAgentStringParser($product, $version);
255			if (($match = $userAgentParser->getMostSpecific($this->getUserAgents())) === false) {
256			$match = self::USER_AGENT;
257			}
258			return $this->client[$userAgentString] = new UserAgentClient($this->handler[$match], $this->base, $statusCode, $product);
259			}
260			}
261

VIPnytt / RobotsTxtParser

Push — master ( 0591fe...b215f8 )

UserAgentParser::client() B

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