SimpleRouteMatcher::interpolate() - Code Metrics - Inspection of "Merge pull request #13 from flight-routing/next" - divineniiquaye/flight-routing - Measure and Improve Code Quality continuously with Scrutinizer

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by Divine Niiquaye

created 2021-01-29 23:26 UTC

SimpleRouteMatcher::interpolate() A

↳ Parent: SimpleRouteMatcher

Complexity

Conditions	4
Paths	5

Size

Total Lines	9
Code Lines	4

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	4
CRAP Score	4

Importance

Changes

Metric	Value
eloc	4
c	0
b	0
f	0
dl	0
loc	9
rs	10
ccs	4
cts	4
cp	1
cc	4
nc	5
nop	2
crap	4

<?php

declare(strict_types=1);

/*
 * This file is part of Flight Routing.
 *
 * PHP version 7.1 and above required
 *
 * @author    Divine Niiquaye Ibok <[email protected]>
 * @copyright 2019 Biurad Group (https://biurad.com/)
 * @license   https://opensource.org/licenses/BSD-3-Clause License
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Flight\Routing\Matchers;

use Flight\Routing\Exceptions\UriHandlerException;
use Flight\Routing\Interfaces\RouteMatcherInterface;
use Flight\Routing\Route;
use Flight\Routing\RouteCollection;
use Flight\Routing\Traits\ValidationTrait;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Message\UriInterface;

class SimpleRouteMatcher implements RouteMatcherInterface
{
    use ValidationTrait;

    private const URI_FIXERS = [
        '[]'  => '',
        '[/]' => '',
        '['   => '',
        ']'   => '',
        '://' => '://',
        '//'  => '/',
    ];

    /** @var SimpleRouteCompiler */
    private $compiler;

    /** @var Route[] */
    private $dynamicRoutes = [];

    /** @var array<string,Route> */
    private $staticRoutes = [];

    /**
     * @param RouteCollection|string $collection
     */
    public function __construct($collection)
    {
        $this->compiler = new SimpleRouteCompiler();

        $this->warmCompiler($collection);
    }

    /**
     * {@inheritdoc}
     */
    public function match(ServerRequestInterface $request): ?Route
    {
        $requestUri    = $request->getUri();
        $requestMethod = $request->getMethod();
        $resolvedPath  = \rawurldecode($this->resolvePath($request));

        // Checks if $route is a static type
        if (isset($this->staticRoutes[$resolvedPath])) {
            return $this->matchRoute($this->staticRoutes[$resolvedPath], $requestUri, $requestMethod);
        }

        foreach ($this->dynamicRoutes as $route) {
            $uriParameters = [];

            /** @var SimpleRouteCompiler $compiledRoute */
            $compiledRoute = $route->getDefaults()['_compiler'];

            // https://tools.ietf.org/html/rfc7231#section-6.5.5
            if ($this->compareUri($compiledRoute->getRegex(), $resolvedPath, $uriParameters)) {
                $foundRoute    = $this->matchRoute($route, $requestUri, $requestMethod);
                $uriParameters = \array_replace(
                    $compiledRoute->getPathVariables(),
                    $uriParameters
                );

                return $this->mergeRouteArguments($foundRoute, $uriParameters);
            }
        }

        return null;
    }

    /**
     * {@inheritdoc}
     */
    public function buildPath(Route $route, array $substitutions): string
    {
        $compiledRoute = $this->compiler->compile($route);

        $parameters = \array_merge(
            $compiledRoute->getVariables(),
            $route->getDefaults(),
            $this->fetchOptions($substitutions, \array_keys($compiledRoute->getVariables()))
        );

        $path = '';

        //Uri without empty blocks (pretty stupid implementation)
        if (count($hostRegex = $compiledRoute->getHostTemplate()) === 1) {
            $schemes = array_keys($route->getSchemes());

            // If we have s secured scheme, it should be served
            $hostScheme   = isset($schemes['https']) ? 'https' : \end($schemes);
            $hostTemplate = $this->interpolate((string) \current($hostRegex), $parameters);

            $path = \sprintf('%s://%s', $hostScheme, \trim($hostTemplate, '.'));
        }

        return $path .= $this->interpolate($compiledRoute->getPathTemplate(), $parameters);
    }

    /**
     * @return SimpleRouteCompiler
     */
    public function getCompiler(): SimpleRouteCompiler
    {
        return $this->compiler;
    }

    /**
     * {@inheritdoc}
     */
    public function getCompiledRoutes()
    {
        $compiledRoutes = [$this->staticRoutes, $this->dynamicRoutes];

        return count($compiledRoutes, COUNT_RECURSIVE) > 2 ? $compiledRoutes : false;
    }

    /**
     * @param RouteCollection|string $routes
     */
    private function warmCompiler($routes): void
    {
        if (\is_string($routes)) {
            list($this->staticRoutes, $this->dynamicRoutes) = require $routes;

            return;
        }

        foreach ($routes->getRoutes() as $route) {
            $compiledRoute = clone $this->compiler->compile($route);

            if (empty($compiledRoute->getPathVariables())) {
                $host = empty($compiledRoute->getHostVariables());
                $url  = \rtrim($route->getPath(), '/') ?: '/';

                // Find static host
                if ($host && !empty($compiledRoute->getHostsRegex())) {
                    $route->default('_domain', $route->getDomain());
                }

                $this->staticRoutes[$url] = $host ? $route : $route->default('_compiler', $compiledRoute);
            } else {
                $this->dynamicRoutes[] = $route->default('_compiler', $compiledRoute);
            }
        }
    }

    /**
     * @param Route        $route
     * @param UriInterface $requestUri
     * @param string       $method
     *
     * @return Route
     */
    private function matchRoute(Route $route, UriInterface $requestUri, string $method): Route
    {
        $this->assertRoute($route, $requestUri, $method);

        $hostParameters = [];
        $hostAndPort    = $requestUri->getHost();

        // Added port to host for matching ...
        if (null !== $requestUri->getPort()) {
            $hostAndPort .= ':' . $requestUri->getPort();
        }

        if (null !== $staticDomain = $route->getDefaults()['_domain'] ?? null) {
            if (!isset($staticDomain[$hostAndPort])) {
                throw $this->assertDomain($hostAndPort, $requestUri->getPath());
            }

            return $route;
        } elseif (null !== $compiledRoute = $route->getDefaults()['_compiler'] ?? null) {
            /** @var SimpleRouteCompiler $compiledRoute */
            if (!$this->compareDomain($compiledRoute->getHostsRegex(), $hostAndPort, $hostParameters)) {
                throw $this->assertDomain($hostAndPort, $requestUri->getPath());
            }

            $hostParameters = \array_replace($compiledRoute->getHostVariables(), $hostParameters);
        }

        return $this->mergeRouteArguments($route, $hostParameters);
    }

    /**
     * Interpolate string with given values.
     *
     * @param string                  $string
     * @param array<int|string,mixed> $values
     *
     * @return string
     */
    private function interpolate(string $string, array $values): string
    {
        $replaces = [];

        foreach ($values as $key => $value) {
            $replaces["<{$key}>"] = (\is_array($value) || $value instanceof \Closure) ? '' : $value;
        }

        return \strtr($string, $replaces + self::URI_FIXERS);
    }

    /**
     * Fetch uri segments and query parameters.
     *
     * @param array<int|string,mixed> $parameters
     * @param array<int|string,mixed> $allowed
     *
     * @return array<int|string,mixed>
     */
    private function fetchOptions($parameters, array $allowed): array
    {
        $result = [];

        foreach ($parameters as $key => $parameter) {
            if (\is_numeric($key) && isset($allowed[$key])) {
                // this segment fetched keys from given parameters either by name or by position
                $key = $allowed[$key];
            }

            // TODO: String must be normalized here
            $result[$key] = $parameter;
        }

        return $result;
    }

    /**
     * @param ServerRequestInterface $request
     *
     * @return string
     */
    private function resolvePath(ServerRequestInterface $request): string
    {
        $requestPath = $request->getUri()->getPath();
        $basePath    = $request->getServerParams()['SCRIPT_NAME'] ?? '';

        if (
            $basePath !== $requestPath &&
            \strlen($basePath = \dirname($basePath)) > 1 &&
            $basePath !== '/index.php'
        ) {
            $requestPath = \substr($requestPath, strcmp($basePath, $requestPath)) ?: '';
        }

        return \strlen($requestPath) > 1 ? rtrim($requestPath, '/') : $requestPath;
    }

    /**
     * @param Route                         $route
     * @param array<int|string,null|string> $arguments
     *
     * @return Route
     */
    private function mergeRouteArguments(Route $route, array $arguments): Route
    {
        foreach ($arguments as $key => $value) {
            $route->argument($key, $value);
        }

        return $route;
    }

    /**
     * @param string $hostAndPort
     * @param string $requestPath
     *
     * @return UriHandlerException
     */
    private function assertDomain(string $hostAndPort, string $requestPath): UriHandlerException
    {
        return new UriHandlerException(
            \sprintf(
                'Unfortunately current domain "%s" is not allowed on requested uri [%s]',
                $hostAndPort,
                $requestPath
            ),
            400
        );
    }
}


1		<?php
2
3		declare(strict_types=1);
4
5		/*
6		* This file is part of Flight Routing.
7		*
8		* PHP version 7.1 and above required
9		*
10		* @author Divine Niiquaye Ibok <[email protected]>
11		* @copyright 2019 Biurad Group (https://biurad.com/)
12		* @license https://opensource.org/licenses/BSD-3-Clause License
13		*
14		* For the full copyright and license information, please view the LICENSE
15		* file that was distributed with this source code.
16		*/
17
18		namespace Flight\Routing\Matchers;
19
20		use Flight\Routing\Exceptions\UriHandlerException;
21		use Flight\Routing\Interfaces\RouteMatcherInterface;
22		use Flight\Routing\Route;
23		use Flight\Routing\RouteCollection;
24		use Flight\Routing\Traits\ValidationTrait;
25		use Psr\Http\Message\ServerRequestInterface;
26		use Psr\Http\Message\UriInterface;
27
28		class SimpleRouteMatcher implements RouteMatcherInterface
29		{
30		use ValidationTrait;
31
32		private const URI_FIXERS = [
33		'[]' => '',
34		'[/]' => '',
35		'[' => '',
36		']' => '',
37		'://' => '://',
38		'//' => '/',
39		];
40
41		/** @var SimpleRouteCompiler */
42		private $compiler;
43
44		/** @var Route[] */
45		private $dynamicRoutes = [];
46
47		/** @var array<string,Route> */
48	86	private $staticRoutes = [];
49
50	86	/**
51	86	* @param RouteCollection\|string $collection
52		*/
53		public function __construct($collection)
54		{
55		$this->compiler = new SimpleRouteCompiler();
56	53
57		$this->warmCompiler($collection);
58	53	}
59
60	53	/**
61	53	* {@inheritdoc}
62	53	*/
63		public function match(ServerRequestInterface $request): ?Route
64		{
65	53	$requestUri = $request->getUri();
66	41	$requestMethod = $request->getMethod();
67		$resolvedPath = \rawurldecode($this->resolvePath($request));
68
69		// Checks if $route is a static type
70	12	if (isset($this->staticRoutes[$resolvedPath])) {
71	9	return $this->matchRoute($this->staticRoutes[$resolvedPath], $requestUri, $requestMethod);
72		}
73
74	9	foreach ($this->dynamicRoutes as $route) {
75	8	$uriParameters = [];
76	8
77		/** @var SimpleRouteCompiler $compiledRoute */
78		$compiledRoute = $route->getDefaults()['_compiler'];
79
80	8	// https://tools.ietf.org/html/rfc7231#section-6.5.5
81	8	if ($this->compareUri($compiledRoute->getRegex(), $resolvedPath, $uriParameters)) {
82	8	$foundRoute = $this->matchRoute($route, $requestUri, $requestMethod);
83		$uriParameters = \array_replace(
84		$compiledRoute->getPathVariables(),
85	8	$uriParameters
86		);
87
88		return $this->mergeRouteArguments($foundRoute, $uriParameters);
89	4	}
90		}
91
92		return null;
93		}
94
95	9	/**
96		* {@inheritdoc}
97	9	*/
98		public function buildPath(Route $route, array $substitutions): string
99	9	{
100	9	$compiledRoute = $this->compiler->compile($route);
101	9
102	9	$parameters = \array_merge(
103		$compiledRoute->getVariables(),
104		$route->getDefaults(),
105	9	$this->fetchOptions($substitutions, \array_keys($compiledRoute->getVariables()))
106		);
107
108	9	$path = '';
109	2
110		//Uri without empty blocks (pretty stupid implementation)
111		if (count($hostRegex = $compiledRoute->getHostTemplate()) === 1) {
112	2	$schemes = array_keys($route->getSchemes());
113
114	2	// If we have s secured scheme, it should be served
115		$hostScheme = isset($schemes['https']) ? 'https' : \end($schemes);
116		$hostTemplate = $this->interpolate((string) \current($hostRegex), $parameters);
117	9
118		$path = \sprintf('%s://%s', $hostScheme, \trim($hostTemplate, '.'));
119		}
120
121		return $path .= $this->interpolate($compiledRoute->getPathTemplate(), $parameters);
122		}
123	2
124		/**
125	2	* @return SimpleRouteCompiler
126		*/
127		public function getCompiler(): SimpleRouteCompiler
128		{
129		return $this->compiler;
130		}
131	53
132		/**
133	53	* {@inheritdoc}
134		*/
135	53	public function getCompiledRoutes()
136	1	{
137		$compiledRoutes = [$this->staticRoutes, $this->dynamicRoutes];
138
139	53	return count($compiledRoutes, COUNT_RECURSIVE) > 2 ? $compiledRoutes : false;
140	1	}
141
142	1	/**
143		* @param RouteCollection\|string $routes
144		*/
145	52	private function warmCompiler($routes): void
146	51	{
147		if (\is_string($routes)) {
148	51	list($this->staticRoutes, $this->dynamicRoutes) = require $routes;
149	43
150	43	return;
151		}
152	43
153		foreach ($routes->getRoutes() as $route) {
154	43	$compiledRoute = clone $this->compiler->compile($route);
155
156		if (empty($compiledRoute->getPathVariables())) {
157	14	$host = empty($compiledRoute->getHostVariables());
158		$url = \rtrim($route->getPath(), '/') ?: '/';
159
160	52	// Find static host
161		if ($host && !empty($compiledRoute->getHostsRegex())) {
162		$route->default('_domain', $route->getDomain());
163		}
164
165		$this->staticRoutes[$url] = $host ? $route : $route->default('_compiler', $compiledRoute);
166		} else {
167		$this->dynamicRoutes[] = $route->default('_compiler', $compiledRoute);
168		}
169		}
170	49	}
171
172	49	/**
173		* @param Route $route
174	49	* @param UriInterface $requestUri
175		* @param string $method
176	9	*
177		* @return Route
178	9	*/
179	1	private function matchRoute(Route $route, UriInterface $requestUri, string $method): Route
180	1	{
181	1	$this->assertRoute($route, $requestUri, $method);
182	1
183	1	$hostParameters = [];
184		$hostAndPort = $requestUri->getHost();
185	1
186		// Added port to host for matching ...
187		if (null !== $requestUri->getPort()) {
188		$hostAndPort .= ':' . $requestUri->getPort();
189	8	}
190
191		if (null !== $staticDomain = $route->getDefaults()['_domain'] ?? null) {
192	48	if (!isset($staticDomain[$hostAndPort])) {
193		throw $this->assertDomain($hostAndPort, $requestUri->getPath());
194	45	}
195
196		return $route;
197		} elseif (null !== $compiledRoute = $route->getDefaults()['_compiler'] ?? null) {
198		/** @var SimpleRouteCompiler $compiledRoute */
199		if (!$this->compareDomain($compiledRoute->getHostsRegex(), $hostAndPort, $hostParameters)) {
200		throw $this->assertDomain($hostAndPort, $requestUri->getPath());
201		}
202	53
203		$hostParameters = \array_replace($compiledRoute->getHostVariables(), $hostParameters);
204	53	}
205	2
206		return $this->mergeRouteArguments($route, $hostParameters);
207		}
208	51
209		/**
210		* Interpolate string with given values.
211		*
212		* @param string $string
213		* @param array<int\|string,mixed> $values
214		*
215		* @return string
216		*/
217		private function interpolate(string $string, array $values): string
218		{
219	9	$replaces = [];
220
221	9	foreach ($values as $key => $value) {
222		$replaces["<{$key}>"] = (\is_array($value) \|\| $value instanceof \Closure) ? '' : $value;
223	9	}
224	9
225		return \strtr($string, $replaces + self::URI_FIXERS);
226		}
227	9
228		/**
229		* Fetch uri segments and query parameters.
230		*
231		* @param array<int\|string,mixed> $parameters
232		* @param array<int\|string,mixed> $allowed
233		*
234		* @return array<int\|string,mixed>
235		*/
236		private function fetchOptions($parameters, array $allowed): array
237		{
238	9	$result = [];
239
240	9	foreach ($parameters as $key => $parameter) {
241		if (\is_numeric($key) && isset($allowed[$key])) {
242	9	// this segment fetched keys from given parameters either by name or by position
243	4	$key = $allowed[$key];
244		}
245	1
246		// TODO: String must be normalized here
247		$result[$key] = $parameter;
248		}
249	4
250		return $result;
251		}
252	9
253		/**
254		* @param ServerRequestInterface $request
255		*
256		* @return string
257		*/
258		private function resolvePath(ServerRequestInterface $request): string
259		{
260		$requestPath = $request->getUri()->getPath();
261	53	$basePath = $request->getServerParams()['SCRIPT_NAME'] ?? '';
262
263	53	if (
264	1	$basePath !== $requestPath &&
265		\strlen($basePath = \dirname($basePath)) > 1 &&
266		$basePath !== '/index.php'
267	53	) {
268	51	$requestPath = \substr($requestPath, strcmp($basePath, $requestPath)) ?: '';
269		}
270
271	53	return \strlen($requestPath) > 1 ? rtrim($requestPath, '/') : $requestPath;
272		}
273
274		/**
275		* @param Route $route
276		* @param array<int\|string,null\|string> $arguments
277		*
278		* @return Route
279		*/
280		private function mergeRouteArguments(Route $route, array $arguments): Route
281		{
282		foreach ($arguments as $key => $value) {
283		$route->argument($key, $value);
284		}
285
286		return $route;
287		}
288
289		/**
290		* @param string $hostAndPort
291		* @param string $requestPath
292		*
293		* @return UriHandlerException
294		*/
295		private function assertDomain(string $hostAndPort, string $requestPath): UriHandlerException
296		{
297		return new UriHandlerException(
298		\sprintf(
299		'Unfortunately current domain "%s" is not allowed on requested uri [%s]',
300		$hostAndPort,
301		$requestPath
302		),
303		400
304		);
305		}
306		}
307

divineniiquaye / flight-routing

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SimpleRouteMatcher::interpolate() A

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