Matcher::transformRoute() - Code Metrics - Inspection of "Badges, rename DispatcherController to DispatcherC..." - kambo-1st/KamboRouter - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 1798cf...75b2e6 )

by Bohuslav

created 2016-11-28 22:48 UTC

Matcher::transformRoute() B

↳ Parent: Matcher

Complexity

Conditions	4
Paths	2

Size

Total Lines	22
Code Lines	14

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	22
rs	8.9197
c	0
b	0
f	0
cc	4
eloc	14
nc	2
nop	1

<?php

namespace Kambo\Router;

// \spl
use InvalidArgumentException;

// \Kambo\Router\
use Kambo\Router\Dispatchers\Interfaces\DispatcherInterface;
use Kambo\Router\Route\Collection;

// \Kambo\Router\Enum
use Kambo\Router\Enum\Method;
use Kambo\Router\Enum\RouteMode;

/**
 * Match provided request object with all defined routes in route collection.
 * If some of routes match a data in provided request. Route is dispatched
 * with additionall parameters. If nothing is matched execution is passed to
 * specific function in dispatcher
 *
 * @author  Bohuslav Simek <[email protected]>
 * @license Apache-2.0
 * @package Kambo\Router
 */
class Matcher
{
    /**
     * Regex for getting URL variables
     *
     * @var string
     */
    const VARIABLE_REGEX =
        "~\{
            \s* ([a-zA-Z0-9_]*) \s*
            (?:
                : \s* ([^{]+(?:\{.*?\})?)
            )?
        \}\??~x";

    /**
     * Shortcuts for regex.
     *
     * @var array
     */
    private $regexShortcuts = [
        ':i}'  => ':[0-9]+}',
        ':a}'  => ':[0-9A-Za-z]+}',
        ':h}'  => ':[0-9A-Fa-f]+}',
        ':c}'  => ':[a-zA-Z0-9+_\-\.]+}'
    ];

    /**
     * Flag for enabling support of mode rewrite.
     *
     * @var string
     */
    private $urlFormat = RouteMode::PATH_FORMAT;

    /**
     * Name of GET parameter from which the route will be get
     * if url format is set to GET_FORMAT.
     *
     * @var string
     */
    private $modeRewriteParameter = 'r';

    /**
     * Instance of route collection
     *
     * @var \Kambo\Router\Route\Collection
     */
    private $routeCollection;

    /**
     * Instance of Dispatcher which will dispatch the request
     *
     * @var \Kambo\Router\Dispatchers\Interfaces\DispatcherInterface
     */
    private $dispatcher;

    /**
     * Constructor
     *
     * @param \Kambo\Router\Route\Collection                           $routeCollection
     * @param \Kambo\Router\Dispatchers\Interfaces\DispatcherInterface $dispatcher
     *
     */
    public function __construct(Collection $routeCollection, DispatcherInterface $dispatcher)
    {
        $this->routeCollection = $routeCollection;
        $this->dispatcher      = $dispatcher;
    }

    /**
     * Match request with provided routes.
     * Get method and url from provided request and start matching.
     *
     * @param object $request instance of PSR 7 compatible request object
     *
     * @return mixed
     */
    public function match($request)
    {
        return $this->matchRoute(
            $request->getMethod(),
            $this->getUrl($request)
        );
    }

    /**
     * Match method and route with provided routes.
     * If route and method match a route is dispatch using provided dispatcher.
     *
     * @param string $method http method
     * @param string $url    url
     *
     * @return mixed
     */
    public function matchRoute($method, $url)
    {
        $parsedRoutes = $this->parseRoutes($this->routeCollection->getRoutes());
        foreach ($parsedRoutes as $parameters) {
            $matchedRouted = $this->routeMatch($parameters->getParsed(), $url);
            if ($matchedRouted !== false) {
                $routeMethod = $parameters->getMethod();
                if ($routeMethod === $method || $routeMethod === Method::ANY) {
                    return $this->dispatcher->dispatchRoute(
                        $parameters,
                        $matchedRouted
                    );
                }
            }
        }

        return $this->dispatcher->dispatchNotFound();
    }

    /**
     * Set format for URL resolving.
     * If the path mode is set to a path a web server must be properly
     * configurated, defualt value is PATH_FORMAT.
     *
     * @param string $urlFormat value from RouteMode enum
     *
     * @return self for fluent interface
     */
    public function setUrlFormat($urlFormat)
    {
        if (RouteMode::isInEnum($urlFormat)) {
            $this->urlFormat = $urlFormat;
        } else {
            throw new InvalidArgumentException(
                'Value of urlFormat must be from RouteMode enum.'
            );
        }

        return $this;
    }

    /**
     * Get format for URL resolving.
     *
     * @return string value from RouteMode enum
     */
    public function getUrlFormat()
    {
        return $this->urlFormat;
    }

    // ------------ PRIVATE METHODS

    /**
     * Match route with provideed regex.
     *
     * @param string $routeRegex
     * @param string $route
     *
     * @return mixed
     */
    private function routeMatch($routeRegex, $route)
    {
        $matches = [];
        if (preg_match($routeRegex, $route, $matches)) {
            unset($matches[0]);

            return array_values($matches);
        }

        return false;
    }

    /**
     * Prepare regex and parameters for each of routes.
     *
     * @param array $routes array with instances of route object
     *
     * @return array transformed routes
     */
    private function parseRoutes($routes)
    {
        foreach ($routes as $route) {
            $routeUrl = strtr($route->getUrl(), $this->regexShortcuts);

            list($routeRegex, $parameters) = $this->transformRoute($routeUrl);
            $route->setParsed($routeRegex)->setParameters($parameters);
        }

        return $routes;
    }

    /**
     * Get route from request object.
     * Method expect an instance of PSR 7 compatible request object.
     *
     * @param object $request
     *
     * @return string
     */
    private function getUrl($request)
    {
        if ($this->urlFormat === RouteMode::PATH_FORMAT) {
            $path = $request->getUri()->getPath();
        } else {
            $queryParams = $request->getQueryParams();
            $route       = null;
            if (isset($queryParams[$this->modeRewriteParameter])) {
                $route = $queryParams[$this->modeRewriteParameter];
            }

            $path = '/'.$route;
        }

        return $path;
    }

    /**
     * Prepare regex for resolving route a extract variables from route.
     *
     * @param string $route
     *
     * @return array regex and parameters
     */
    private function transformRoute($route)
    {
        $parameters = $this->extractVariableRouteParts($route);
        if (isset($parameters)) {
            foreach ($parameters as $variables) {
                list($valueToReplace, , $parametersVariables) = array_pad($variables, 3, null);
                if (isset($parametersVariables)) {
                    $route = str_replace(
                        $valueToReplace,
                        '('.reset($parametersVariables).')',
                        $route
                    );
                } else {
                    $route = str_replace($valueToReplace, '([^/]+)', $route);
                }
            }
        }

        $route = '~^'.$route.'$~';

        return [$route, $parameters];
    }

    /**
     * Extract variables from route
     *
     * @param string $route
     *
     * @return null|array
     */
    private function extractVariableRouteParts($route)
    {
        $matches = null;
        preg_match_all(
            self::VARIABLE_REGEX,
            $route,
            $matches,
            PREG_OFFSET_CAPTURE | PREG_SET_ORDER
        );

        return $matches;
    }
}


1			<?php
2
3			namespace Kambo\Router;
4
5			// \spl
6			use InvalidArgumentException;
7
8			// \Kambo\Router\
9			use Kambo\Router\Dispatchers\Interfaces\DispatcherInterface;
10			use Kambo\Router\Route\Collection;
11
12			// \Kambo\Router\Enum
13			use Kambo\Router\Enum\Method;
14			use Kambo\Router\Enum\RouteMode;
15
16			/**
17			* Match provided request object with all defined routes in route collection.
18			* If some of routes match a data in provided request. Route is dispatched
19			* with additionall parameters. If nothing is matched execution is passed to
20			* specific function in dispatcher
21			*
22			* @author Bohuslav Simek <[email protected]>
23			* @license Apache-2.0
24			* @package Kambo\Router
25			*/
26			class Matcher
27			{
28			/**
29			* Regex for getting URL variables
30			*
31			* @var string
32			*/
33			const VARIABLE_REGEX =
34			"~\{
35			\s* ([a-zA-Z0-9_]) \s
36			(?:
37			: \s* ([^{]+(?:\{.*?\})?)
38			)?
39			\}\??~x";
40
41			/**
42			* Shortcuts for regex.
43			*
44			* @var array
45			*/
46			private $regexShortcuts = [
47			':i}' => ':[0-9]+}',
48			':a}' => ':[0-9A-Za-z]+}',
49			':h}' => ':[0-9A-Fa-f]+}',
50			':c}' => ':[a-zA-Z0-9+_\-\.]+}'
51			];
52
53			/**
54			* Flag for enabling support of mode rewrite.
55			*
56			* @var string
57			*/
58			private $urlFormat = RouteMode::PATH_FORMAT;
59
60			/**
61			* Name of GET parameter from which the route will be get
62			* if url format is set to GET_FORMAT.
63			*
64			* @var string
65			*/
66			private $modeRewriteParameter = 'r';
67
68			/**
69			* Instance of route collection
70			*
71			* @var \Kambo\Router\Route\Collection
72			*/
73			private $routeCollection;
74
75			/**
76			* Instance of Dispatcher which will dispatch the request
77			*
78			* @var \Kambo\Router\Dispatchers\Interfaces\DispatcherInterface
79			*/
80			private $dispatcher;
81
82			/**
83			* Constructor
84			*
85			* @param \Kambo\Router\Route\Collection $routeCollection
86			* @param \Kambo\Router\Dispatchers\Interfaces\DispatcherInterface $dispatcher
87			*
88			*/
89			public function __construct(Collection $routeCollection, DispatcherInterface $dispatcher)
90			{
91			$this->routeCollection = $routeCollection;
92			$this->dispatcher = $dispatcher;
93			}
94
95			/**
96			* Match request with provided routes.
97			* Get method and url from provided request and start matching.
98			*
99			* @param object $request instance of PSR 7 compatible request object
100			*
101			* @return mixed
102			*/
103			public function match($request)
104			{
105			return $this->matchRoute(
106			$request->getMethod(),
107			$this->getUrl($request)
108			);
109			}
110
111			/**
112			* Match method and route with provided routes.
113			* If route and method match a route is dispatch using provided dispatcher.
114			*
115			* @param string $method http method
116			* @param string $url url
117			*
118			* @return mixed
119			*/
120			public function matchRoute($method, $url)
121			{
122			$parsedRoutes = $this->parseRoutes($this->routeCollection->getRoutes());
123			foreach ($parsedRoutes as $parameters) {
124			$matchedRouted = $this->routeMatch($parameters->getParsed(), $url);
125			if ($matchedRouted !== false) {
126			$routeMethod = $parameters->getMethod();
127			if ($routeMethod === $method \|\| $routeMethod === Method::ANY) {
128			return $this->dispatcher->dispatchRoute(
129			$parameters,
130			$matchedRouted
131			);
132			}
133			}
134			}
135
136			return $this->dispatcher->dispatchNotFound();
137			}
138
139			/**
140			* Set format for URL resolving.
141			* If the path mode is set to a path a web server must be properly
142			* configurated, defualt value is PATH_FORMAT.
143			*
144			* @param string $urlFormat value from RouteMode enum
145			*
146			* @return self for fluent interface
147			*/
148			public function setUrlFormat($urlFormat)
149			{
150			if (RouteMode::isInEnum($urlFormat)) {
151			$this->urlFormat = $urlFormat;
152			} else {
153			throw new InvalidArgumentException(
154			'Value of urlFormat must be from RouteMode enum.'
155			);
156			}
157
158			return $this;
159			}
160
161			/**
162			* Get format for URL resolving.
163			*
164			* @return string value from RouteMode enum
165			*/
166			public function getUrlFormat()
167			{
168			return $this->urlFormat;
169			}
170
171			// ------------ PRIVATE METHODS
172
173			/**
174			* Match route with provideed regex.
175			*
176			* @param string $routeRegex
177			* @param string $route
178			*
179			* @return mixed
180			*/
181			private function routeMatch($routeRegex, $route)
182			{
183			$matches = [];
184			if (preg_match($routeRegex, $route, $matches)) {
185			unset($matches[0]);
186
187			return array_values($matches);
188			}
189
190			return false;
191			}
192
193			/**
194			* Prepare regex and parameters for each of routes.
195			*
196			* @param array $routes array with instances of route object
197			*
198			* @return array transformed routes
199			*/
200			private function parseRoutes($routes)
201			{
202			foreach ($routes as $route) {
203			$routeUrl = strtr($route->getUrl(), $this->regexShortcuts);
204
205			list($routeRegex, $parameters) = $this->transformRoute($routeUrl);
206			$route->setParsed($routeRegex)->setParameters($parameters);
207			}
208
209			return $routes;
210			}
211
212			/**
213			* Get route from request object.
214			* Method expect an instance of PSR 7 compatible request object.
215			*
216			* @param object $request
217			*
218			* @return string
219			*/
220			private function getUrl($request)
221			{
222			if ($this->urlFormat === RouteMode::PATH_FORMAT) {
223			$path = $request->getUri()->getPath();
224			} else {
225			$queryParams = $request->getQueryParams();
226			$route = null;
227			if (isset($queryParams[$this->modeRewriteParameter])) {
228			$route = $queryParams[$this->modeRewriteParameter];
229			}
230
231			$path = '/'.$route;
232			}
233
234			return $path;
235			}
236
237			/**
238			* Prepare regex for resolving route a extract variables from route.
239			*
240			* @param string $route
241			*
242			* @return array regex and parameters
243			*/
244			private function transformRoute($route)
245			{
246			$parameters = $this->extractVariableRouteParts($route);
247			if (isset($parameters)) {
248			foreach ($parameters as $variables) {
249			list($valueToReplace, , $parametersVariables) = array_pad($variables, 3, null);
250			if (isset($parametersVariables)) {
251			$route = str_replace(
252			$valueToReplace,
253			'('.reset($parametersVariables).')',
254			$route
255			);
256			} else {
257			$route = str_replace($valueToReplace, '([^/]+)', $route);
258			}
259			}
260			}
261
262			$route = '~^'.$route.'$~';
263
264			return [$route, $parameters];
265			}
266
267			/**
268			* Extract variables from route
269			*
270			* @param string $route
271			*
272			* @return null\|array
273			*/
274			private function extractVariableRouteParts($route)
275			{
276			$matches = null;
277			preg_match_all(
278			self::VARIABLE_REGEX,
279			$route,
280			$matches,
281			PREG_OFFSET_CAPTURE \| PREG_SET_ORDER
282			);
283
284			return $matches;
285			}
286			}
287

kambo-1st / KamboRouter

Push — master ( 1798cf...75b2e6 )

Matcher::transformRoute() B

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