FormatNegotiator::getFromHeader() - Code Metrics - Inspection of "Filter list of acceptable headers; use default if..." - oscarotero/psr7-middlewares - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#81)

unknown

created 2017-08-15 23:46 UTC

FormatNegotiator::getFromHeader() D

↳ Parent: FormatNegotiator

Complexity

Conditions	10
Paths	9

Size

Total Lines	31
Code Lines	17

Duplication

Lines	5
Ratio	16.13 %

Importance

Changes

Metric	Value
dl	5
loc	31
rs	4.8196
c	0
b	0
f	0
cc	10
eloc	17
nc	9
nop	1

How to fix Complexity

<?php

namespace Psr7Middlewares\Middleware;

use Psr7Middlewares\Utils;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Message\ResponseInterface;
use Negotiation\Negotiator;

/**
 * Middleware returns the client preferred format.
 */
class FormatNegotiator
{
    use Utils\NegotiateTrait;
    use Utils\AttributeTrait;

    const KEY = 'FORMAT';

    /**
     * @var string Default format
     */
    private $default = 'html';

    /**
     * @var string[] Formats which the server supports
     */
    private $priorities = array();

    /**
     * @var array Available formats with the mime types
     */
    private $formats = [
        //text
        'html' => [['html', 'htm', 'php'], ['text/html', 'application/xhtml+xml']],
        'txt' => [['txt'], ['text/plain']],
        'css' => [['css'], ['text/css']],
        'json' => [['json'], ['application/json', 'text/json', 'application/x-json']],
        'jsonp' => [['jsonp'], ['text/javascript', 'application/javascript', 'application/x-javascript']],
        'js' => [['js'], ['text/javascript', 'application/javascript', 'application/x-javascript']],

        //xml
        'rdf' => [['rdf'], ['application/rdf+xml']],
        'rss' => [['rss'], ['application/rss+xml']],
        'atom' => [['atom'], ['application/atom+xml']],
        'xml' => [['xml'], ['text/xml', 'application/xml', 'application/x-xml']],

        //images
        'bmp' => [['bmp'], ['image/bmp']],
        'gif' => [['gif'], ['image/gif']],
        'png' => [['png'], ['image/png', 'image/x-png']],
        'jpg' => [['jpg', 'jpeg', 'jpe'], ['image/jpeg', 'image/jpg']],
        'svg' => [['svg', 'svgz'], ['image/svg+xml']],
        'psd' => [['psd'], ['image/vnd.adobe.photoshop']],
        'eps' => [['ai', 'eps', 'ps'], ['application/postscript']],
        'ico' => [['ico'], ['image/x-icon', 'image/vnd.microsoft.icon']],

        //audio/video
        'mov' => [['mov', 'qt'], ['video/quicktime']],
        'mp3' => [['mp3'], ['audio/mpeg']],
        'mp4' => [['mp4'], ['video/mp4']],
        'ogg' => [['ogg'], ['audio/ogg']],
        'ogv' => [['ogv'], ['video/ogg']],
        'webm' => [['webm'], ['video/webm']],
        'webp' => [['webp'], ['image/webp']],

        //fonts
        'eot' => [['eot'], ['application/vnd.ms-fontobject']],
        'otf' => [['otf'], ['font/opentype', 'application/x-font-opentype']],
        'ttf' => [['ttf'], ['font/ttf', 'application/font-ttf', 'application/x-font-ttf']],
        'woff' => [['woff'], ['font/woff', 'application/font-woff', 'application/x-font-woff']],
        'woff2' => [['woff2'], ['font/woff2', 'application/font-woff2', 'application/x-font-woff2']],

        //other formats
        'pdf' => [['pdf'], ['application/pdf', 'application/x-download']],
        'zip' => [['zip'], ['application/zip', 'application/x-zip', 'application/x-zip-compressed']],
        'rar' => [['rar'], ['application/rar', 'application/x-rar', 'application/x-rar-compressed']],
        'exe' => [['exe'], ['application/x-msdownload']],
        'msi' => [['msi'], ['application/x-msdownload']],
        'cab' => [['cab'], ['application/vnd.ms-cab-compressed']],
        'doc' => [['doc'], ['application/msword']],
        'rtf' => [['rtf'], ['application/rtf']],
        'xls' => [['xls'], ['application/vnd.ms-excel']],
        'ppt' => [['ppt'], ['application/vnd.ms-powerpoint']],
        'odt' => [['odt'], ['application/vnd.oasis.opendocument.text']],
        'ods' => [['ods'], ['application/vnd.oasis.opendocument.spreadsheet']],
    ];

    /**
     * Returns the format.
     *
     * @param ServerRequestInterface $request
     *
     * @return string|null
     */
    public static function getFormat(ServerRequestInterface $request)
    {
        return self::getAttribute($request, self::KEY);
    }

    /**
     * Add a new format.
     *
     * @param string     $format
     * @param array      $mimeTypes
     * @param array|null $extensions
     *
     * @return self
     */
    public function addFormat($format, array $mimeTypes, array $extensions = null)
    {
        $this->formats[$format] = [is_null($extensions) ? [$format] : $extensions, $mimeTypes];

        return $this;
    }

    /**
     * Set the default format.
     *
     * @param string $format
     *
     * @return self
     */
    public function defaultFormat($format)
    {
        $this->default = $format;

        return $this;
    }

    /**
     * Sets the formats which the server supports.
     *
     * @param string[] $priorities
     *
     * @return self
     */
    public function setPriorities($priorities)
    {
        $this->priorities = $priorities;

        return $this;
    }

    /**
     * Execute the middleware.
     *
     * @param ServerRequestInterface $request
     * @param ResponseInterface      $response
     * @param callable               $next
     *
     * @return ResponseInterface
     */
    public function __invoke(ServerRequestInterface $request, ResponseInterface $response, callable $next)
    {
        $format = $this->getFromExtension($request) ?: $this->getFromHeader($request) ?: $this->default;
        $contentType = $this->formats[$format][1][0].'; charset=utf-8';

        $response = $next(
            self::setAttribute($request, self::KEY, $format),
            $response->withHeader('Content-Type', $contentType)
        );

        if (!$response->hasHeader('Content-Type')) {
            $response = $response->withHeader('Content-Type', $contentType);
        }

        return $response;
    }

    /**
     * Returns the format using the file extension.
     *
     * @return null|string
     */
    private function getFromExtension(ServerRequestInterface $request)
    {
        $extension = strtolower(pathinfo($request->getUri()->getPath(), PATHINFO_EXTENSION));

        if (empty($extension)) {
            return;
        }

        foreach ($this->formats as $format => $data) {

            if (in_array($extension, $data[0], true)) {
                return $format;
            }
        }
    }

    /**
     * Returns the format using the Accept header.
     *
     * @return null|string
     */
    private function getFromHeader(ServerRequestInterface $request)
    {
        $accept = $request->getHeaderLine('Accept');

        //If the client accepts everything, then return null and allow the default to be used.
        if (empty($accept) || $accept === "*" || $accept === "*/*") {
            return null;
        }

        if (empty($this->priorities)) {
            $formats = $this->formats;
        } else {
            //Filter the list of formats.
            $formats = [];
            foreach ($this->priorities as $priority) {
                if (isset($this->formats[$priority])) {
                    $formats[$priority] = $this->formats[$priority];
                }
            }
        }
        $headers = call_user_func_array('array_merge', array_column($formats, 1));
        $mime = $this->negotiateHeader($accept, new Negotiator(), $headers);

        if ($mime !== null) {
            foreach ($this->formats as $format => $data) {

                if (in_array($mime, $data[1], true)) {
                    return $format;
                }
            }
        }
    }
}


1		<?php
2
3		namespace Psr7Middlewares\Middleware;
4
5		use Psr7Middlewares\Utils;
6		use Psr\Http\Message\ServerRequestInterface;
7		use Psr\Http\Message\ResponseInterface;
8		use Negotiation\Negotiator;
9
10		/**
11		* Middleware returns the client preferred format.
12		*/
13		class FormatNegotiator
14		{
15		use Utils\NegotiateTrait;
16		use Utils\AttributeTrait;
17
18		const KEY = 'FORMAT';
19
20		/**
21		* @var string Default format
22		*/
23		private $default = 'html';
24
25		/**
26		* @var string[] Formats which the server supports
27		*/
28		private $priorities = array();
29
30		/**
31		* @var array Available formats with the mime types
32		*/
33		private $formats = [
34		//text
35		'html' => [['html', 'htm', 'php'], ['text/html', 'application/xhtml+xml']],
36		'txt' => [['txt'], ['text/plain']],
37		'css' => [['css'], ['text/css']],
38		'json' => [['json'], ['application/json', 'text/json', 'application/x-json']],
39		'jsonp' => [['jsonp'], ['text/javascript', 'application/javascript', 'application/x-javascript']],
40		'js' => [['js'], ['text/javascript', 'application/javascript', 'application/x-javascript']],
41
42		//xml
43		'rdf' => [['rdf'], ['application/rdf+xml']],
44		'rss' => [['rss'], ['application/rss+xml']],
45		'atom' => [['atom'], ['application/atom+xml']],
46		'xml' => [['xml'], ['text/xml', 'application/xml', 'application/x-xml']],
47
48		//images
49		'bmp' => [['bmp'], ['image/bmp']],
50		'gif' => [['gif'], ['image/gif']],
51		'png' => [['png'], ['image/png', 'image/x-png']],
52		'jpg' => [['jpg', 'jpeg', 'jpe'], ['image/jpeg', 'image/jpg']],
53		'svg' => [['svg', 'svgz'], ['image/svg+xml']],
54		'psd' => [['psd'], ['image/vnd.adobe.photoshop']],
55		'eps' => [['ai', 'eps', 'ps'], ['application/postscript']],
56		'ico' => [['ico'], ['image/x-icon', 'image/vnd.microsoft.icon']],
57
58		//audio/video
59		'mov' => [['mov', 'qt'], ['video/quicktime']],
60		'mp3' => [['mp3'], ['audio/mpeg']],
61		'mp4' => [['mp4'], ['video/mp4']],
62		'ogg' => [['ogg'], ['audio/ogg']],
63		'ogv' => [['ogv'], ['video/ogg']],
64		'webm' => [['webm'], ['video/webm']],
65		'webp' => [['webp'], ['image/webp']],
66
67		//fonts
68		'eot' => [['eot'], ['application/vnd.ms-fontobject']],
69		'otf' => [['otf'], ['font/opentype', 'application/x-font-opentype']],
70		'ttf' => [['ttf'], ['font/ttf', 'application/font-ttf', 'application/x-font-ttf']],
71		'woff' => [['woff'], ['font/woff', 'application/font-woff', 'application/x-font-woff']],
72		'woff2' => [['woff2'], ['font/woff2', 'application/font-woff2', 'application/x-font-woff2']],
73
74		//other formats
75		'pdf' => [['pdf'], ['application/pdf', 'application/x-download']],
76		'zip' => [['zip'], ['application/zip', 'application/x-zip', 'application/x-zip-compressed']],
77		'rar' => [['rar'], ['application/rar', 'application/x-rar', 'application/x-rar-compressed']],
78		'exe' => [['exe'], ['application/x-msdownload']],
79		'msi' => [['msi'], ['application/x-msdownload']],
80		'cab' => [['cab'], ['application/vnd.ms-cab-compressed']],
81		'doc' => [['doc'], ['application/msword']],
82		'rtf' => [['rtf'], ['application/rtf']],
83		'xls' => [['xls'], ['application/vnd.ms-excel']],
84		'ppt' => [['ppt'], ['application/vnd.ms-powerpoint']],
85		'odt' => [['odt'], ['application/vnd.oasis.opendocument.text']],
86		'ods' => [['ods'], ['application/vnd.oasis.opendocument.spreadsheet']],
87		];
88
89		/**
90		* Returns the format.
91		*
92		* @param ServerRequestInterface $request
93		*
94		* @return string\|null
95		*/
96		public static function getFormat(ServerRequestInterface $request)
97		{
98		return self::getAttribute($request, self::KEY);
99		}
100
101		/**
102		* Add a new format.
103		*
104		* @param string $format
105		* @param array $mimeTypes
106		* @param array\|null $extensions
107		*
108		* @return self
109		*/
110		public function addFormat($format, array $mimeTypes, array $extensions = null)
111		{
112		$this->formats[$format] = [is_null($extensions) ? [$format] : $extensions, $mimeTypes];
113
114		return $this;
115		}
116
117		/**
118		* Set the default format.
119		*
120		* @param string $format
121		*
122		* @return self
123		*/
124		public function defaultFormat($format)
125		{
126		$this->default = $format;
127
128		return $this;
129		}
130
131		/**
132		* Sets the formats which the server supports.
133		*
134		* @param string[] $priorities
135		*
136		* @return self
137		*/
138		public function setPriorities($priorities)
139		{
140		$this->priorities = $priorities;
141
142		return $this;
143		}
144
145		/**
146		* Execute the middleware.
147		*
148		* @param ServerRequestInterface $request
149		* @param ResponseInterface $response
150		* @param callable $next
151		*
152		* @return ResponseInterface
153		*/
154		public function __invoke(ServerRequestInterface $request, ResponseInterface $response, callable $next)
155		{
156		$format = $this->getFromExtension($request) ?: $this->getFromHeader($request) ?: $this->default;
157		$contentType = $this->formats[$format][1][0].'; charset=utf-8';
158
159		$response = $next(
160		self::setAttribute($request, self::KEY, $format),
161		$response->withHeader('Content-Type', $contentType)
162		);
163
164		if (!$response->hasHeader('Content-Type')) {
165		$response = $response->withHeader('Content-Type', $contentType);
166		}
167
168		return $response;
169		}
170
171		/**
172		* Returns the format using the file extension.
173		*
174		* @return null\|string
175		*/
176		private function getFromExtension(ServerRequestInterface $request)
177		{
178		$extension = strtolower(pathinfo($request->getUri()->getPath(), PATHINFO_EXTENSION));
179
180		if (empty($extension)) {
181		return;
182		}
183
184	View Code Duplication	foreach ($this->formats as $format => $data) {
		0 ignored issues – show Duplication introduced 2016-03-22 19:12 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
185		if (in_array($extension, $data[0], true)) {
186		return $format;
187		}
188		}
189		}
190
191		/**
192		* Returns the format using the Accept header.
193		*
194		* @return null\|string
195		*/
196		private function getFromHeader(ServerRequestInterface $request)
197		{
198		$accept = $request->getHeaderLine('Accept');
199
200		//If the client accepts everything, then return null and allow the default to be used.
201		if (empty($accept) \|\| $accept === "" \|\| $accept === "/*") {
202		return null;
203		}
204
205		if (empty($this->priorities)) {
206		$formats = $this->formats;
207		} else {
208		//Filter the list of formats.
209		$formats = [];
210		foreach ($this->priorities as $priority) {
211		if (isset($this->formats[$priority])) {
212		$formats[$priority] = $this->formats[$priority];
213		}
214		}
215		}
216		$headers = call_user_func_array('array_merge', array_column($formats, 1));
217		$mime = $this->negotiateHeader($accept, new Negotiator(), $headers);
218
219		if ($mime !== null) {
220	View Code Duplication	foreach ($this->formats as $format => $data) {
		0 ignored issues – show Duplication introduced 2016-03-22 19:12 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
221		if (in_array($mime, $data[1], true)) {
222		return $format;
223		}
224		}
225		}
226		}
227		}
228

oscarotero / psr7-middlewares

Pull Request — master (#81)

FormatNegotiator::getFromHeader() D

Complexity

Size

Duplication

Importance

How to fix Complexity

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