Matcher::parsePath() - Code Metrics - Inspection of "trait now use method accessor" - codeburnerframework/routing - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Branch — dev (8e1e05)

by Alex

created 2016-02-22 14:16 UTC

Matcher::parsePath() A

↳ Parent: Matcher

Complexity

Conditions	2
Paths	2

Size

Total Lines	10
Code Lines	5

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	4
CRAP Score	2.032

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
c	1
b	0
f	0
dl	0
loc	10
ccs	4
cts	5
cp	0.8
rs	9.4285
cc	2
eloc	5
nc	2
nop	1
crap	2.032

<?php

/**
 * Codeburner Framework.
 *
 * @author Alex Rohleder <[email protected]>
 * @copyright 2016 Alex Rohleder
 * @license http://opensource.org/licenses/MIT
 */

namespace Codeburner\Router;

use Codeburner\Router\Exceptions\Http\MethodNotAllowedException;
use Codeburner\Router\Exceptions\Http\NotFoundException;
use Exception;

/**
 * The matcher class find the route for a given http method and path.
 *
 * @author Alex Rohleder <[email protected]>
 */

class Matcher
{

    /**
     * @var Collector
     */

    protected $collector;

    /**
     * @var Parser $parser
     */

    protected $parser;

    /**
     * Define a basepath to all routes.
     *
     * @var string
     */

    protected $basepath = "";

    /**
     * Construct the route dispatcher.
     *
     * @param Collector $collector
     * @param string $basepath Define a Path prefix that must be excluded on matches.
     */

    public function __construct(Collector $collector, $basepath = "")
    {
        $this->collector = $collector;
        $this->basepath  = $basepath;
    }

    /**
     * Find a route that matches the given arguments.
     * 
     * @param string $httpMethod
     * @param string $path
     *
     * @throws NotFoundException
     * @throws MethodNotAllowedException
     *
     * @return Route
     */

    public function match($httpMethod, $path)
    {
        $path = $this->parsePath($path);
        $route = null;
$myVar = 'Value';
$higher = false;

if (rand(1, 6) > 3) {
    $higher = true;
} else {
    $higher = false;
}

        if (!$route = $this->collector->findStaticRoute($httpMethod, $path)) {

            if (!$route = $this->matchDynamicRoute($httpMethod, $path)) {

                $this->matchSimilarRoute($httpMethod, $path);
            }
        }

        $route->setMatcher($this);
        return $route;
    }

    /**
     * Find and return the request dynamic route based on the compiled data and Path.
     *
     * @param string $httpMethod
     * @param string $path
     *
     * @return Route|false If the request match an array with the action and parameters will
     *                     be returned otherwise a false will.
     */

    protected function matchDynamicRoute($httpMethod, $path)
    {
        if ($routes = $this->collector->findDynamicRoutes($httpMethod, $path)) {
            // cache the parser reference
            $this->parser = $this->collector->getParser();
            // chunk routes for smaller regex groups using the Sturges' Formula
            foreach (array_chunk($routes, round(1 + 3.3 * log(count($routes))), true) as $chunk) {
                array_map([$this, "buildRoute"], $chunk);
                list($pattern, $map) = $this->buildGroup($chunk);

                if (!preg_match($pattern, $path, $matches)) {
                    continue;
                }

                /** @var Route $route */
                $route = $map[count($matches)];
                unset($matches[0]);

                $route->setParams(array_combine($route->getParams(), array_filter($matches)));

                return $route;
            }
        }

        return false;
    }

    /**
     * Parse the dynamic segments of the pattern and replace then for
     * corresponding regex.
     *
     * @param Route $route
     * @return Route
     */

    protected function buildRoute(Route $route)
    {
        if ($route->getBlock()) {
            return $route;
        }

        list($pattern, $params) = $this->parsePlaceholders($route->getPattern());
        return $route->setPatternWithoutReset($pattern)->setParams($params)->setBlock(true);
    }

    /**
     * Group several dynamic routes patterns into one big regex and maps
     * the routes to the pattern positions in the big regex.
     *
     * @param Route[] $routes
     * @return array
     */

    protected function buildGroup(array $routes)
    {
        $groupCount = (int) $map = $regex = [];

        foreach ($routes as $route) {
            $params           = $route->getParams();
            $paramsCount      = count($params);
            $groupCount       = max($groupCount, $paramsCount) + 1;
            $regex[]          = $route->getPattern() . str_repeat("()", $groupCount - $paramsCount - 1);
            $map[$groupCount] = $route;
        }

        return ["~^(?|" . implode("|", $regex) . ")$~", $map];
    }

    /**
     * Parse an route pattern seeking for parameters and build the route regex.
     *
     * @param string $pattern
     * @return array 0 => new route regex, 1 => map of parameter names
     */

    protected function parsePlaceholders($pattern)
    {
        $params = [];
        $parser = $this->parser;

        preg_match_all("~" . $parser::DYNAMIC_REGEX . "~x", $pattern, $matches, PREG_SET_ORDER);

        foreach ((array) $matches as $key => $match) {
            $pattern = str_replace($match[0], isset($match[2]) ? "({$match[2]})" : "([^/]+)", $pattern);
            $params[$key] = $match[1];
        }

        return [$pattern, $params];
    }

    /**
     * Get only the path of a given url.
     *
     * @param string $path The given URL
     *
     * @throws Exception
     * @return string
     */

    protected function parsePath($path)
    {
        $path = parse_url(substr(strstr(";" . $path, ";" . $this->basepath), strlen(";" . $this->basepath)), PHP_URL_PATH);

        if ($path === false) {
            throw new Exception("Seriously malformed URL passed to route matcher.");
        }

        return $path;
    }

    /**
     * Generate an HTTP error request with method not allowed or not found.
     *
     * @param string $httpMethod
     * @param string $path
     *
     * @throws NotFoundException
     * @throws MethodNotAllowedException
     */

    protected function matchSimilarRoute($httpMethod, $path)
    {
        $dm = [];

        if (($sm = $this->checkStaticRouteInOtherMethods($httpMethod, $path))
                || ($dm = $this->checkDynamicRouteInOtherMethods($httpMethod, $path))) {
            throw new MethodNotAllowedException($httpMethod, $path, array_merge((array) $sm, (array) $dm));
        }

        throw new NotFoundException;
    }

    /**
     * Verify if a static route match in another method than the requested.
     *
     * @param string $targetHttpMethod The HTTP method that must not be checked
     * @param string $path              The Path that must be matched.
     *
     * @return array
     */

    protected function checkStaticRouteInOtherMethods($targetHttpMethod, $path)
    {
        return array_filter($this->getHttpMethodsBut($targetHttpMethod), function ($httpMethod) use ($path) {
            return (bool) $this->collector->findStaticRoute($httpMethod, $path);
        });
    }

    /**
     * Verify if a dynamic route match in another method than the requested.
     *
     * @param string $targetHttpMethod The HTTP method that must not be checked
     * @param string $path             The Path that must be matched.
     *
     * @return array
     */

    protected function checkDynamicRouteInOtherMethods($targetHttpMethod, $path)
    {
        return array_filter($this->getHttpMethodsBut($targetHttpMethod), function ($httpMethod) use ($path) {
            return (bool) $this->matchDynamicRoute($httpMethod, $path);
        });
    }

    /**
     * Strip the given http methods and return all the others.
     *
     * @param string|string[]
     * @return array
     */

    protected function getHttpMethodsBut($targetHttpMethod)
    {
        return array_diff(explode(" ", Collector::HTTP_METHODS), (array) $targetHttpMethod);
    }

    /**
     * @return Collector
     */

    public function getCollector()
    {
        return $this->collector;
    }

    /**
     * @return string
     */

    public function getBasePath()
    {
        return $this->basepath;
    }

    /**
     * Set a new basepath, this will be a prefix that must be excluded in
     * every requested Path.
     *
     * @param string $basepath The new basepath
     */
    
    public function setBasePath($basepath)
    {
        $this->basepath = $basepath;
    }

}


1		<?php
2
3		/**
4		* Codeburner Framework.
5		*
6		* @author Alex Rohleder <[email protected]>
7		* @copyright 2016 Alex Rohleder
8		* @license http://opensource.org/licenses/MIT
9		*/
10
11		namespace Codeburner\Router;
12
13		use Codeburner\Router\Exceptions\Http\MethodNotAllowedException;
14		use Codeburner\Router\Exceptions\Http\NotFoundException;
15		use Exception;
16
17		/**
18		* The matcher class find the route for a given http method and path.
19		*
20		* @author Alex Rohleder <[email protected]>
21		*/
22
23		class Matcher
24		{
25
26		/**
27		* @var Collector
28		*/
29
30		protected $collector;
31
32		/**
33		* @var Parser $parser
34		*/
35
36		protected $parser;
37
38		/**
39		* Define a basepath to all routes.
40		*
41		* @var string
42		*/
43
44		protected $basepath = "";
45
46		/**
47		* Construct the route dispatcher.
48		*
49		* @param Collector $collector
50		* @param string $basepath Define a Path prefix that must be excluded on matches.
51		*/
52
53	54	public function __construct(Collector $collector, $basepath = "")
54		{
55	54	$this->collector = $collector;
56	54	$this->basepath = $basepath;
57	54	}
58
59		/**
60		* Find a route that matches the given arguments.
61		*
62		* @param string $httpMethod
63		* @param string $path
64		*
65		* @throws NotFoundException
66		* @throws MethodNotAllowedException
67		*
68		* @return Route
69		*/
70
71	48	public function match($httpMethod, $path)
72		{
73	48	$path = $this->parsePath($path);
74	48	$route = null;
		0 ignored issues – show Unused Code introduced 2016-02-22 14:19 UTC by Report Bug Copy Issue Report `$route` is not used, you could remove the assignment. This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently. $myVar = 'Value'; $higher = false; if (rand(1, 6) > 3) { $higher = true; } else { $higher = false; } Both the `$myVar` assignment in line 1 and the `$higher` assignment in line 2 are dead. The first because `$myVar` is never used and the second because `$higher` is always overwritten for every possible time line. Loading history...
75
76	48	if (!$route = $this->collector->findStaticRoute($httpMethod, $path)) {
		0 ignored issues – show Comprehensibility Best Practice introduced 2016-02-22 14:19 UTC by Report Bug Copy Issue Report The expression `$this->collector->findSt...te($httpMethod, $path);` of type `Codeburner\Router\Route\|false` adds `false` to the return on line 83 which is incompatible with the return type documented by `Codeburner\Router\Matcher::match` of type `Codeburner\Router\Route`. It seems like you forgot to handle an error condition. Loading history...
77	35	if (!$route = $this->matchDynamicRoute($httpMethod, $path)) {
		0 ignored issues – show Comprehensibility Best Practice introduced 2016-02-22 14:19 UTC by Report Bug Copy Issue Report The expression `$this->matchDynamicRoute($httpMethod, $path);` of type `Codeburner\Router\Route\|false` adds `false` to the return on line 83 which is incompatible with the return type documented by `Codeburner\Router\Matcher::match` of type `Codeburner\Router\Route`. It seems like you forgot to handle an error condition. Loading history...
78	14	$this->matchSimilarRoute($httpMethod, $path);
79		}
80	27	}
81
82	42	$route->setMatcher($this);
83	42	return $route;
84		}
85
86		/**
87		* Find and return the request dynamic route based on the compiled data and Path.
88		*
89		* @param string $httpMethod
90		* @param string $path
91		*
92		* @return Route\|false If the request match an array with the action and parameters will
93		* be returned otherwise a false will.
94		*/
95
96	35	protected function matchDynamicRoute($httpMethod, $path)
97		{
98	35	if ($routes = $this->collector->findDynamicRoutes($httpMethod, $path)) {
99		// cache the parser reference
100	29	$this->parser = $this->collector->getParser();
101		// chunk routes for smaller regex groups using the Sturges' Formula
102	29	foreach (array_chunk($routes, round(1 + 3.3 * log(count($routes))), true) as $chunk) {
103	29	array_map([$this, "buildRoute"], $chunk);
104	29	list($pattern, $map) = $this->buildGroup($chunk);
105
106	29	if (!preg_match($pattern, $path, $matches)) {
107	7	continue;
108		}
109
110		/** @var Route $route */
111	27	$route = $map[count($matches)];
112	27	unset($matches[0]);
113
114	27	$route->setParams(array_combine($route->getParams(), array_filter($matches)));
115
116	27	return $route;
117	7	}
118	7	}
119
120	14	return false;
121		}
122
123		/**
124		* Parse the dynamic segments of the pattern and replace then for
125		* corresponding regex.
126		*
127		* @param Route $route
128		* @return Route
129		*/
130
131	29	protected function buildRoute(Route $route)
132		{
133	29	if ($route->getBlock()) {
134	9	return $route;
135		}
136
137	29	list($pattern, $params) = $this->parsePlaceholders($route->getPattern());
138	29	return $route->setPatternWithoutReset($pattern)->setParams($params)->setBlock(true);
139		}
140
141		/**
142		* Group several dynamic routes patterns into one big regex and maps
143		* the routes to the pattern positions in the big regex.
144		*
145		* @param Route[] $routes
146		* @return array
147		*/
148
149	29	protected function buildGroup(array $routes)
150		{
151	29	$groupCount = (int) $map = $regex = [];
152
153	29	foreach ($routes as $route) {
154	29	$params = $route->getParams();
155	29	$paramsCount = count($params);
156	29	$groupCount = max($groupCount, $paramsCount) + 1;
157	29	$regex[] = $route->getPattern() . str_repeat("()", $groupCount - $paramsCount - 1);
158	29	$map[$groupCount] = $route;
159	29	}
160
161	29	return ["~^(?\|" . implode("\|", $regex) . ")$~", $map];
162		}
163
164		/**
165		* Parse an route pattern seeking for parameters and build the route regex.
166		*
167		* @param string $pattern
168		* @return array 0 => new route regex, 1 => map of parameter names
169		*/
170
171	29	protected function parsePlaceholders($pattern)
172		{
173	29	$params = [];
174	29	$parser = $this->parser;
175
176	29	preg_match_all("~" . $parser::DYNAMIC_REGEX . "~x", $pattern, $matches, PREG_SET_ORDER);
177
178	29	foreach ((array) $matches as $key => $match) {
179	29	$pattern = str_replace($match[0], isset($match[2]) ? "({$match[2]})" : "([^/]+)", $pattern);
180	29	$params[$key] = $match[1];
181	29	}
182
183	29	return [$pattern, $params];
184		}
185
186		/**
187		* Get only the path of a given url.
188		*
189		* @param string $path The given URL
190		*
191		* @throws Exception
192		* @return string
193		*/
194
195	48	protected function parsePath($path)
196		{
197	48	$path = parse_url(substr(strstr(";" . $path, ";" . $this->basepath), strlen(";" . $this->basepath)), PHP_URL_PATH);
198
199	48	if ($path === false) {
200		throw new Exception("Seriously malformed URL passed to route matcher.");
201		}
202
203	48	return $path;
204		}
205
206		/**
207		* Generate an HTTP error request with method not allowed or not found.
208		*
209		* @param string $httpMethod
210		* @param string $path
211		*
212		* @throws NotFoundException
213		* @throws MethodNotAllowedException
214		*/
215
216	14	protected function matchSimilarRoute($httpMethod, $path)
217		{
218	14	$dm = [];
219
220	14	if (($sm = $this->checkStaticRouteInOtherMethods($httpMethod, $path))
221	14	\|\| ($dm = $this->checkDynamicRouteInOtherMethods($httpMethod, $path))) {
222	5	throw new MethodNotAllowedException($httpMethod, $path, array_merge((array) $sm, (array) $dm));
223		}
224
225	9	throw new NotFoundException;
226		}
227
228		/**
229		* Verify if a static route match in another method than the requested.
230		*
231		* @param string $targetHttpMethod The HTTP method that must not be checked
232		* @param string $path The Path that must be matched.
233		*
234		* @return array
235		*/
236
237	14	protected function checkStaticRouteInOtherMethods($targetHttpMethod, $path)
238		{
239		return array_filter($this->getHttpMethodsBut($targetHttpMethod), function ($httpMethod) use ($path) {
240	14	return (bool) $this->collector->findStaticRoute($httpMethod, $path);
241	14	});
242		}
243
244		/**
245		* Verify if a dynamic route match in another method than the requested.
246		*
247		* @param string $targetHttpMethod The HTTP method that must not be checked
248		* @param string $path The Path that must be matched.
249		*
250		* @return array
251		*/
252
253		protected function checkDynamicRouteInOtherMethods($targetHttpMethod, $path)
254		{
255	9	return array_filter($this->getHttpMethodsBut($targetHttpMethod), function ($httpMethod) use ($path) {
256	9	return (bool) $this->matchDynamicRoute($httpMethod, $path);
257	9	});
258		}
259
260		/**
261		* Strip the given http methods and return all the others.
262		*
263		* @param string\|string[]
264		* @return array
265		*/
266
267	14	protected function getHttpMethodsBut($targetHttpMethod)
268		{
269	14	return array_diff(explode(" ", Collector::HTTP_METHODS), (array) $targetHttpMethod);
270		}
271
272		/**
273		* @return Collector
274		*/
275
276		public function getCollector()
277		{
278		return $this->collector;
279		}
280
281		/**
282		* @return string
283		*/
284
285	1	public function getBasePath()
286		{
287	1	return $this->basepath;
288		}
289
290		/**
291		* Set a new basepath, this will be a prefix that must be excluded in
292		* every requested Path.
293		*
294		* @param string $basepath The new basepath
295		*/
296
297	1	public function setBasePath($basepath)
298		{
299	1	$this->basepath = $basepath;
300	1	}
301
302		}
303

codeburnerframework / routing

Branch — dev (8e1e05)

Matcher::parsePath() A

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