MediaType::isMediaParametersEqual() - Code Metrics - Inspection of "Daily Inspection: Close #114" - neomerx/json-api - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Branch — master (85eed3)

unknown

created 2016-03-18 00:00 UTC

MediaType::isMediaParametersEqual() B

↳ Parent: MediaType

Complexity

Conditions	6
Paths	6

Size

Total Lines	30
Code Lines	13

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	14
CRAP Score	6

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
c	1
b	0
f	0
dl	0
loc	30
ccs	14
cts	14
cp	1
rs	8.439
cc	6
eloc	13
nc	6
nop	1
crap	6

<?php namespace Neomerx\JsonApi\Http\Headers;

/**
 * Copyright 2015 [email protected] (www.neomerx.com)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

use \InvalidArgumentException;
use \Neomerx\JsonApi\Contracts\Http\Headers\MediaTypeInterface;

/**
 * @package Neomerx\JsonApi
 */
class MediaType implements MediaTypeInterface
{
    /**
     * @var string
     */
    private $type;

    /**
     * @var string
     */
    private $subType;

    /**
     * @var string
     */
    private $mediaType;

    /**
     * @var array<string,string>|null
     */
    private $parameters;

    /**
     * A list of parameter names for case-insensitive compare. Keys must be lower-cased.
     *
     * @var array
     */
    protected $ciParams = [
        'charset' => true,
    ];

    /**
     * @param string                    $type
     * @param string                    $subType
     * @param array<string,string>|null $parameters
     */
    public function __construct($type, $subType, array $parameters = null)
    {
        $type = trim($type);
        if (empty($type) === true) {
            throw new InvalidArgumentException('type');
        }

        $subType = trim($subType);
        if (empty($subType) === true) {
            throw new InvalidArgumentException('subType');
        }

        $this->type       = $type;
        $this->subType    = $subType;
        $this->mediaType  = $type . '/' . $subType;
        $this->parameters = $parameters;
    }

    /**
     * @inheritdoc
     */
    public function getType()
    {
        return $this->type;
    }

    /**
     * @inheritdoc
     */
    public function getSubType()
    {
        return $this->subType;
    }

    /**
     * @inheritdoc
     */
    public function getMediaType()
    {
        return $this->mediaType;
    }

    /**
     * @inheritdoc
     */
    public function getParameters()
    {
        return $this->parameters;
    }

    /**
     * @inheritdoc
     */
    public function matchesTo(MediaTypeInterface $mediaType)
    {
        return
            $this->isTypeMatches($mediaType) &&
            $this->isSubTypeMatches($mediaType) &&
            $this->isMediaParametersEqual($mediaType);
    }

    /**
     * @inheritdoc
     */
    public function equalsTo(MediaTypeInterface $mediaType)
    {
        return
            $this->isTypeEquals($mediaType) &&
            $this->isSubTypeEquals($mediaType) &&
            $this->isMediaParametersEqual($mediaType);
    }

    /**
     * Parse media type.
     *
     * @param int    $position
     * @param string $mediaType
     *
     * @return MediaType
     */
    public static function parse($position, $mediaType)
    {
        $position ?: null;

        $fields = explode(';', $mediaType);

        if (strpos($fields[0], '/') === false) {
            throw new InvalidArgumentException('mediaType');
        }

        list($type, $subType) = explode('/', $fields[0], 2);

        $parameters = null;
        $count      = count($fields);
        for ($idx = 1; $idx < $count; ++$idx) {
            if (strpos($fields[$idx], '=') === false) {
                throw new InvalidArgumentException('mediaType');
            }

            list($key, $value) = explode('=', $fields[$idx], 2);
            $parameters[trim($key)] = trim($value, ' "');
        }

        return new static($type, $subType, $parameters);
    }

    /**
     * @param MediaTypeInterface $mediaType
     *
     * @return bool
     */
    private function isTypeMatches(MediaTypeInterface $mediaType)
    {
        return $mediaType->getType() === '*' || $this->isTypeEquals($mediaType);
    }

    /**
     * @param MediaTypeInterface $mediaType
     *
     * @return bool
     */
    private function isTypeEquals(MediaTypeInterface $mediaType)
    {
        // Type, subtype and param name should be compared case-insensitive
        // https://tools.ietf.org/html/rfc7231#section-3.1.1.1
        return strcasecmp($this->getType(), $mediaType->getType()) === 0;
    }

    /**
     * @param MediaTypeInterface $mediaType
     *
     * @return bool
     */
    private function isSubTypeMatches(MediaTypeInterface $mediaType)
    {
        return $mediaType->getSubType() === '*' || $this->isSubTypeEquals($mediaType);
    }

    /**
     * @param MediaTypeInterface $mediaType
     *
     * @return bool
     */
    private function isSubTypeEquals(MediaTypeInterface $mediaType)
    {
        // Type, subtype and param name should be compared case-insensitive
        // https://tools.ietf.org/html/rfc7231#section-3.1.1.1
        return strcasecmp($this->getSubType(), $mediaType->getSubType()) === 0;
    }

    /**
     * @param MediaTypeInterface $mediaType
     *
     * @return bool
     */
    private function isMediaParametersEqual(MediaTypeInterface $mediaType)
    {
        if ($this->bothMediaTypeParamsEmpty($mediaType) === true) {
            return true;
        } elseif ($this->bothMediaTypeParamsNotEmptyAndEqualInSize($mediaType)) {
            // Type, subtype and param name should be compared case-insensitive
            // https://tools.ietf.org/html/rfc7231#section-3.1.1.1
            $ourParameters       = array_change_key_case($this->getParameters());
            $parametersToCompare = array_change_key_case($mediaType->getParameters());

            // if at least one name are different they are not equal
            if (empty(array_diff_key($ourParameters, $parametersToCompare)) === false) {
                return false;
            }

            // If we are here we have to compare values. Also some of the values should be compared case-insensitive
            // according to https://tools.ietf.org/html/rfc7231#section-3.1.1.1
            // > 'Parameter values might or might not be case-sensitive, depending on
            // the semantics of the parameter name.'
            foreach ($ourParameters as $name => $value) {
                if ($this->paramValuesEqual($name, $value, $parametersToCompare[$name]) === false) {
                    return false;
                }
            }

            return true;
        }

        return false;
    }

    /**
     * @param MediaTypeInterface $mediaType
     *
     * @return bool
     */
    private function bothMediaTypeParamsEmpty(MediaTypeInterface $mediaType)
    {
        return $this->getParameters() === null && $mediaType->getParameters() === null;
    }

    /**
     * @param MediaTypeInterface $mediaType
     *
     * @return bool
     */
    private function bothMediaTypeParamsNotEmptyAndEqualInSize(MediaTypeInterface $mediaType)
    {
        $pr1 = $this->getParameters();
        $pr2 = $mediaType->getParameters();

        return (empty($pr1) === false && empty($pr2) === false) && (count($pr1) === count($pr2));
    }

    /**
     * @param string $name
     *
     * @return bool
     */
    private function isParamCaseInsensitive($name)
    {
        return isset($this->ciParams[$name]);
    }

    /**
     * @param string $name
     * @param string $value
     * @param string $valueToCompare
     *
     * @return bool
     */
    private function paramValuesEqual($name, $value, $valueToCompare)
    {
        $valuesEqual = $this->isParamCaseInsensitive($name) === true ?
            strcasecmp($value, $valueToCompare) === 0 : $value === $valueToCompare;

        return $valuesEqual;
    }
}


1		<?php namespace Neomerx\JsonApi\Http\Headers;
2
3		/**
4		* Copyright 2015 [email protected] (www.neomerx.com)
5		*
6		* Licensed under the Apache License, Version 2.0 (the "License");
7		* you may not use this file except in compliance with the License.
8		* You may obtain a copy of the License at
9		*
10		* http://www.apache.org/licenses/LICENSE-2.0
11		*
12		* Unless required by applicable law or agreed to in writing, software
13		* distributed under the License is distributed on an "AS IS" BASIS,
14		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15		* See the License for the specific language governing permissions and
16		* limitations under the License.
17		*/
18
19		use \InvalidArgumentException;
20		use \Neomerx\JsonApi\Contracts\Http\Headers\MediaTypeInterface;
21
22		/**
23		* @package Neomerx\JsonApi
24		*/
25		class MediaType implements MediaTypeInterface
26		{
27		/**
28		* @var string
29		*/
30		private $type;
31
32		/**
33		* @var string
34		*/
35		private $subType;
36
37		/**
38		* @var string
39		*/
40		private $mediaType;
41
42		/**
43		* @var array<string,string>\|null
44		*/
45		private $parameters;
46
47		/**
48		* A list of parameter names for case-insensitive compare. Keys must be lower-cased.
49		*
50		* @var array
51		*/
52		protected $ciParams = [
53		'charset' => true,
54		];
55
56		/**
57		* @param string $type
58		* @param string $subType
59		* @param array<string,string>\|null $parameters
60		*/
61	73	public function __construct($type, $subType, array $parameters = null)
62		{
63	73	$type = trim($type);
64	73	if (empty($type) === true) {
65	2	throw new InvalidArgumentException('type');
66		}
67
68	71	$subType = trim($subType);
69	71	if (empty($subType) === true) {
70	2	throw new InvalidArgumentException('subType');
71		}
72
73	69	$this->type = $type;
74	69	$this->subType = $subType;
75	69	$this->mediaType = $type . '/' . $subType;
76	69	$this->parameters = $parameters;
77	69	}
78
79		/**
80		* @inheritdoc
81		*/
82	33	public function getType()
83		{
84	33	return $this->type;
85		}
86
87		/**
88		* @inheritdoc
89		*/
90	32	public function getSubType()
91		{
92	32	return $this->subType;
93		}
94
95		/**
96		* @inheritdoc
97		*/
98	33	public function getMediaType()
99		{
100	33	return $this->mediaType;
101		}
102
103		/**
104		* @inheritdoc
105		*/
106	47	public function getParameters()
107		{
108	47	return $this->parameters;
109		}
110
111		/**
112		* @inheritdoc
113		*/
114	26	public function matchesTo(MediaTypeInterface $mediaType)
115		{
116		return
117	26	$this->isTypeMatches($mediaType) &&
118	26	$this->isSubTypeMatches($mediaType) &&
119	26	$this->isMediaParametersEqual($mediaType);
120		}
121
122		/**
123		* @inheritdoc
124		*/
125	18	public function equalsTo(MediaTypeInterface $mediaType)
126		{
127		return
128	18	$this->isTypeEquals($mediaType) &&
129	18	$this->isSubTypeEquals($mediaType) &&
130	18	$this->isMediaParametersEqual($mediaType);
131		}
132
133		/**
134		* Parse media type.
135		*
136		* @param int $position
137		* @param string $mediaType
138		*
139		* @return MediaType
140		*/
141	40	public static function parse($position, $mediaType)
142		{
143	40	$position ?: null;
144
145	40	$fields = explode(';', $mediaType);
146
147	40	if (strpos($fields[0], '/') === false) {
148	1	throw new InvalidArgumentException('mediaType');
149		}
150
151	39	list($type, $subType) = explode('/', $fields[0], 2);
152
153	39	$parameters = null;
154	39	$count = count($fields);
155	39	for ($idx = 1; $idx < $count; ++$idx) {
156	12	if (strpos($fields[$idx], '=') === false) {
157	2	throw new InvalidArgumentException('mediaType');
158		}
159
160	10	list($key, $value) = explode('=', $fields[$idx], 2);
161	10	$parameters[trim($key)] = trim($value, ' "');
162	10	}
163
164	37	return new static($type, $subType, $parameters);
165		}
166
167		/**
168		* @param MediaTypeInterface $mediaType
169		*
170		* @return bool
171		*/
172	26	private function isTypeMatches(MediaTypeInterface $mediaType)
173		{
174	26	return $mediaType->getType() === '*' \|\| $this->isTypeEquals($mediaType);
175		}
176
177		/**
178		* @param MediaTypeInterface $mediaType
179		*
180		* @return bool
181		*/
182	26	private function isTypeEquals(MediaTypeInterface $mediaType)
183		{
184		// Type, subtype and param name should be compared case-insensitive
185		// https://tools.ietf.org/html/rfc7231#section-3.1.1.1
186	26	return strcasecmp($this->getType(), $mediaType->getType()) === 0;
187		}
188
189		/**
190		* @param MediaTypeInterface $mediaType
191		*
192		* @return bool
193		*/
194	25	private function isSubTypeMatches(MediaTypeInterface $mediaType)
195		{
196	25	return $mediaType->getSubType() === '*' \|\| $this->isSubTypeEquals($mediaType);
197		}
198
199		/**
200		* @param MediaTypeInterface $mediaType
201		*
202		* @return bool
203		*/
204	21	private function isSubTypeEquals(MediaTypeInterface $mediaType)
205		{
206		// Type, subtype and param name should be compared case-insensitive
207		// https://tools.ietf.org/html/rfc7231#section-3.1.1.1
208	21	return strcasecmp($this->getSubType(), $mediaType->getSubType()) === 0;
209		}
210
211		/**
212		* @param MediaTypeInterface $mediaType
213		*
214		* @return bool
215		*/
216	26	private function isMediaParametersEqual(MediaTypeInterface $mediaType)
217		{
218	26	if ($this->bothMediaTypeParamsEmpty($mediaType) === true) {
219	17	return true;
220	10	} elseif ($this->bothMediaTypeParamsNotEmptyAndEqualInSize($mediaType)) {
221		// Type, subtype and param name should be compared case-insensitive
222		// https://tools.ietf.org/html/rfc7231#section-3.1.1.1
223	9	$ourParameters = array_change_key_case($this->getParameters());
224	9	$parametersToCompare = array_change_key_case($mediaType->getParameters());
225
226		// if at least one name are different they are not equal
227	9	if (empty(array_diff_key($ourParameters, $parametersToCompare)) === false) {
228	1	return false;
229		}
230
231		// If we are here we have to compare values. Also some of the values should be compared case-insensitive
232		// according to https://tools.ietf.org/html/rfc7231#section-3.1.1.1
233		// > 'Parameter values might or might not be case-sensitive, depending on
234		// the semantics of the parameter name.'
235	9	foreach ($ourParameters as $name => $value) {
236	9	if ($this->paramValuesEqual($name, $value, $parametersToCompare[$name]) === false) {
237	2	return false;
238		}
239	7	}
240
241	7	return true;
242		}
243
244	10	return false;
245		}
246
247		/**
248		* @param MediaTypeInterface $mediaType
249		*
250		* @return bool
251		*/
252	26	private function bothMediaTypeParamsEmpty(MediaTypeInterface $mediaType)
253		{
254	26	return $this->getParameters() === null && $mediaType->getParameters() === null;
255		}
256
257		/**
258		* @param MediaTypeInterface $mediaType
259		*
260		* @return bool
261		*/
262	10	private function bothMediaTypeParamsNotEmptyAndEqualInSize(MediaTypeInterface $mediaType)
263		{
264	10	$pr1 = $this->getParameters();
265	10	$pr2 = $mediaType->getParameters();
266
267	10	return (empty($pr1) === false && empty($pr2) === false) && (count($pr1) === count($pr2));
268		}
269
270		/**
271		* @param string $name
272		*
273		* @return bool
274		*/
275	9	private function isParamCaseInsensitive($name)
276		{
277	9	return isset($this->ciParams[$name]);
278		}
279
280		/**
281		* @param string $name
282		* @param string $value
283		* @param string $valueToCompare
284		*
285		* @return bool
286		*/
287	9	private function paramValuesEqual($name, $value, $valueToCompare)
288		{
289	9	$valuesEqual = $this->isParamCaseInsensitive($name) === true ?
290	9	strcasecmp($value, $valueToCompare) === 0 : $value === $valueToCompare;
291
292	9	return $valuesEqual;
293		}
294		}
295

neomerx / json-api

Branch — master (85eed3)

MediaType::isMediaParametersEqual() B

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