Images_Via_Imgix::image_downsize() - Code Metrics - Inspection of "Add imgix support for image_downsize" - imgix-wordpress/images-via-imgix - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#18)

by Rasmus

created 2017-03-02 11:42 UTC

Images_Via_Imgix::image_downsize() D

↳ Parent: Images_Via_Imgix

Complexity

Conditions	10
Paths	31

Size

Total Lines	33
Code Lines	21

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	10
eloc	21
nc	31
nop	3
dl	0
loc	33
rs	4.8196
c	0
b	0
f	0

How to fix Complexity

<?php

class Images_Via_Imgix {

	/**
	 * The instance of the class.
	 *
	 * @var Images_Via_Imgix
	 */
	protected static $instance;

	/**
	 * Plugin options
	 *
	 * @var array
	 */
	protected $options = [];

	/**
	 * Buffer is started by plugin and should be ended on shutdown.
	 *
	 * @var bool
	 */
	protected $buffer_started = false;

	/**
	 * ImagesViaImgix constructor.
	 */
	public function __construct() {
		$this->options = get_option( 'imgix_settings', [] );

		add_filter( 'wp_get_attachment_url', [ $this, 'replace_image_url' ] );
		add_filter( 'imgix/add-image-url', [ $this, 'replace_image_url' ] );

		add_filter( 'image_downsize', [ $this, 'image_downsize' ], 10, 3 );

		add_filter( 'wp_calculate_image_srcset', [ $this, 'calculate_image_srcset' ], 10, 3 );

		add_filter( 'the_content', [ $this, 'replace_images_in_content' ] );
		add_action( 'wp_head', [ $this, 'prefetch_cdn' ], 1 );

		add_action( 'after_setup_theme', [ $this, 'buffer_start_for_retina' ] );
		add_action( 'shutdown', [ $this, 'buffer_end_for_retina' ] );
	}

	/**
	 * Plugin loader instance.
	 *
	 * @return Images_Via_Imgix
	 */
	public static function instance() {
		if ( ! isset( self::$instance ) ) {
			self::$instance = new self;
		}

		return self::$instance;
	}

	/**
	 * Override options from settings.
	 * Used in unit tests.
	 *
	 * @param array $options
	 */
	public function set_options( $options ) {
		$this->options = $options;
	}

	/**
	 * Find all img tags with sources matching "imgix.net" without the parameter
	 * "srcset" and add the "srcset" parameter to all those images, appending a new
	 * source using the "dpr=2" modifier.
	 *
	 * @param $content
	 *
	 * @return string Content with retina-enriched image tags.
	 */
	public function add_retina( $content ) {
		$pattern = '/<img((?![^>]+srcset )([^>]*)';
		$pattern .= 'src=[\'"]([^\'"]*imgix.net[^\'"]*\?[^\'"]*w=[^\'"]*)[\'"]([^>]*)*?)>/i';
		$repl    = '<img$2src="$3" srcset="${3}, ${3}&amp;dpr=2 2x, ${3}&amp;dpr=3 3x,"$4>';
		$content = preg_replace( $pattern, $repl, $content );

		return preg_replace( $pattern, $repl, $content );
	}

	/**
	 * Modify image urls for attachments to use imgix host.
	 *
	 * @param string $url
	 *
	 * @return string
	 */
	public function replace_image_url( $url ) {
		if ( ! empty ( $this->options['cdn_link'] ) ) {
			$pathinfo = pathinfo( $url );

			if ( isset( $pathinfo['extension'] ) && in_array( $pathinfo['extension'], [
					'jpg',
					'gif',
					'png',
					'jpeg'
				] )
			) {
				$parsed_url = parse_url( $url );
				if ( isset( $parsed_url['host'] ) && $parsed_url['host'] === parse_url( home_url( '/' ), PHP_URL_HOST ) ) {
					$cdn = parse_url( $this->options['cdn_link'] );
					foreach ( [ 'scheme', 'host', 'port' ] as $url_part ) {
						if ( isset( $cdn[ $url_part ] ) ) {
							$parsed_url[ $url_part ] = $cdn[ $url_part ];
						} else {
							unset( $parsed_url[ $url_part ] );
						}
					}
					$url = http_build_url( $parsed_url );
<?php

function getDate($date)
{
    if ($date !== null) {
        return new DateTime($date);
    }

    return false;
}

					$url = add_query_arg( $this->get_global_params(), $url );
				}
			}
		}

		return $url;
	}

	/**
	 * Set params when running image_downsize
	 *
	 * @param false|array  $return
	 * @param int          $attachment_id
	 * @param string|array $size
	 *
	 * @return false|array
	 */
	public function image_downsize( $return, $attachment_id, $size ) {
		if ( ! empty ( $this->options['cdn_link'] ) ) {
			$img_url = wp_get_attachment_url( $attachment_id );

			$params = [];
			if ( is_array( $size ) ) {
				$params['w'] = $width = isset( $size[0] ) ? $size[0] : 0;
				$params['h'] = $height = isset( $size[1] ) ? $size[1] : 0;
			} else {
				$available_sizes = $this->get_all_defined_sizes();
				if ( isset( $available_sizes[ $size ] ) ) {
					$size        = $available_sizes[ $size ];
					$params['w'] = $width = $size['width'];
					$params['h'] = $height = $size['height'];
				}
			}

			$params = array_filter( $params );

			$img_url = add_query_arg( $params, $img_url );

			if ( ! isset( $width ) || ! isset( $height ) ) {
				// any other type: use the real image
				$meta   = wp_get_attachment_metadata( $attachment_id );
				$width  = isset( $width ) ? $width : $meta['width'];
				$height = isset( $height ) ? $height : $meta['height'];
			}

			$return = [ $img_url, $width, $height, true ];
		}

		return $return;
	}

	/**
	 * Change url for images in srcset
	 *
	 * @param array  $image_meta
	 * @param array  $size_array
	 * @param string $image_src
	 *
	 * @return array
	 */
	public function calculate_image_srcset( $image_meta, $size_array, $image_src ) {
		foreach ( $image_meta as $i => $image_size ) {
			if ( $image_size['descriptor'] === 'w' ) {
				$image_src = remove_query_arg( 'h', $image_src );
				$image_meta[ $i ]['url'] = add_query_arg( 'w', $image_size['value'], $image_src );
			}
		}

		return $image_meta;
	}

	/**
	 * Modify image urls in content to use imgix host.
	 *
	 * @param $content
	 *
	 * @return string
	 */
	public function replace_images_in_content( $content ) {
		if ( ! empty ( $this->options['cdn_link'] ) ) {
			$content = preg_replace_callback( '/(?<=\shref="|\ssrc="|\shref=\'|\ssrc=\').*(?=\'|")/', function ( $match ) {
				return esc_url( apply_filters( 'imgix/add-image-url', $match[0] ) );
			}, $content );

		}

		return $content;
	}

	/**
	 * Add tag to dns prefetch cdn host
	 */
	public function prefetch_cdn() {
		if ( ! empty ( $this->options['cdn_link'] ) ) {
			$host = parse_url( $this->options['cdn_link'], PHP_URL_HOST );

			printf(
				'<link rel="dns-prefetch" href="%s"/>',
				esc_attr( '//' . $host )
			);
		}
	}

	/**
	 * Start output buffer if auto retina is enabled
	 */
	public function buffer_start_for_retina() {
		if ( ! empty ( $this->options['add_dpi2_srcset'] ) ) {
			$this->buffer_started = true;
			ob_start( [ $this, 'add_retina' ] );
		}
	}

	/**
	 * Stop output buffer if it was enabled by the plugin
	 */
	public function buffer_end_for_retina() {
		if ( $this->buffer_started === true ) {
			ob_end_flush();
		}
	}

	/**
	 * Returns a array of global parameters to be applied in all images,
	 * according to plugin's settings.
	 *
	 * @return array Global parameters to be appened at the end of each img URL.
	 */
	protected function get_global_params() {
		$params = [];

		// For now, only "auto" is supported.
		$auto = [];
		if ( ! empty ( $this->options['auto_format'] ) ) {
			array_push( $auto, 'format' );
		}

		if ( ! empty ( $this->options['auto_enhance'] ) ) {
			array_push( $auto, 'enhance' );
		}

		if ( ! empty( $auto ) ) {
			$params['auto'] = implode( '%2C', $auto );
		}

		return $params;
	}

	/**
	 * Get all defined image sizes
	 *
	 * @return array
	 */
	protected function get_all_defined_sizes() {
		// Make thumbnails and other intermediate sizes.
		$theme_image_sizes = wp_get_additional_image_sizes();

		$sizes = [];
		foreach ( get_intermediate_image_sizes() as $s ) {
			$sizes[ $s ] = [ 'width' => '', 'height' => '', 'crop' => false ];
			if ( isset( $theme_image_sizes[ $s ] ) ) {
				// For theme-added sizes
				$sizes[ $s ]['width']  = intval( $theme_image_sizes[ $s ]['width'] );
				$sizes[ $s ]['height'] = intval( $theme_image_sizes[ $s ]['height'] );
				$sizes[ $s ]['crop']   = $theme_image_sizes[ $s ]['crop'];
			} else {
				// For default sizes set in options
				$sizes[ $s ]['width']  = get_option( "{$s}_size_w" );
				$sizes[ $s ]['height'] = get_option( "{$s}_size_h" );
				$sizes[ $s ]['crop']   = get_option( "{$s}_crop" );
			}
		}

		return $sizes;
	}
}

Images_Via_Imgix::instance();


1			<?php
2
3			class Images_Via_Imgix {
4
5			/**
6			* The instance of the class.
7			*
8			* @var Images_Via_Imgix
9			*/
10			protected static $instance;
11
12			/**
13			* Plugin options
14			*
15			* @var array
16			*/
17			protected $options = [];
18
19			/**
20			* Buffer is started by plugin and should be ended on shutdown.
21			*
22			* @var bool
23			*/
24			protected $buffer_started = false;
25
26			/**
27			* ImagesViaImgix constructor.
28			*/
29			public function __construct() {
30			$this->options = get_option( 'imgix_settings', [] );
31
32			add_filter( 'wp_get_attachment_url', [ $this, 'replace_image_url' ] );
33			add_filter( 'imgix/add-image-url', [ $this, 'replace_image_url' ] );
34
35			add_filter( 'image_downsize', [ $this, 'image_downsize' ], 10, 3 );
36
37			add_filter( 'wp_calculate_image_srcset', [ $this, 'calculate_image_srcset' ], 10, 3 );
38
39			add_filter( 'the_content', [ $this, 'replace_images_in_content' ] );
40			add_action( 'wp_head', [ $this, 'prefetch_cdn' ], 1 );
41
42			add_action( 'after_setup_theme', [ $this, 'buffer_start_for_retina' ] );
43			add_action( 'shutdown', [ $this, 'buffer_end_for_retina' ] );
44			}
45
46			/**
47			* Plugin loader instance.
48			*
49			* @return Images_Via_Imgix
50			*/
51			public static function instance() {
52			if ( ! isset( self::$instance ) ) {
53			self::$instance = new self;
54			}
55
56			return self::$instance;
57			}
58
59			/**
60			* Override options from settings.
61			* Used in unit tests.
62			*
63			* @param array $options
64			*/
65			public function set_options( $options ) {
66			$this->options = $options;
67			}
68
69			/**
70			* Find all img tags with sources matching "imgix.net" without the parameter
71			* "srcset" and add the "srcset" parameter to all those images, appending a new
72			* source using the "dpr=2" modifier.
73			*
74			* @param $content
75			*
76			* @return string Content with retina-enriched image tags.
77			*/
78			public function add_retina( $content ) {
79			$pattern = '/<img((?![^>]+srcset )([^>]*)';
80			$pattern .= 'src=[\'"]([^\'"]imgix.net[^\'"]\?[^\'"]w=[^\'"])[\'"]([^>])?)>/i';
81			$repl = '<img$2src="$3" srcset="${3}, ${3}&dpr=2 2x, ${3}&dpr=3 3x,"$4>';
82			$content = preg_replace( $pattern, $repl, $content );
83
84			return preg_replace( $pattern, $repl, $content );
85			}
86
87			/**
88			* Modify image urls for attachments to use imgix host.
89			*
90			* @param string $url
91			*
92			* @return string
93			*/
94			public function replace_image_url( $url ) {
95			if ( ! empty ( $this->options['cdn_link'] ) ) {
96			$pathinfo = pathinfo( $url );
97
98			if ( isset( $pathinfo['extension'] ) && in_array( $pathinfo['extension'], [
99			'jpg',
100			'gif',
101			'png',
102			'jpeg'
103			] )
104			) {
105			$parsed_url = parse_url( $url );
106			if ( isset( $parsed_url['host'] ) && $parsed_url['host'] === parse_url( home_url( '/' ), PHP_URL_HOST ) ) {
107			$cdn = parse_url( $this->options['cdn_link'] );
108			foreach ( [ 'scheme', 'host', 'port' ] as $url_part ) {
109			if ( isset( $cdn[ $url_part ] ) ) {
110			$parsed_url[ $url_part ] = $cdn[ $url_part ];
111			} else {
112			unset( $parsed_url[ $url_part ] );
113			}
114			}
115			$url = http_build_url( $parsed_url );
			0 ignored issues – show Security Bug introduced 2017-01-31 16:08 UTC by Report Bug Copy Issue Report It seems like `$parsed_url` defined by `parse_url($url)` on line `105` can also be of type `false`; however, `http_build_url()` does only seem to accept `array`, did you maybe forget to handle an error condition? This check looks for type mismatches where the missing type is `false`. This is usually indicative of an error condtion. Consider the follow example <?php function getDate($date) { if ($date !== null) { return new DateTime($date); } return false; } This function either returns a new `DateTime` object or false, if there was an error. This is a typical pattern in PHP programming to show that an error has occurred without raising an exception. The calling code should check for this returned `false` before passing on the value to another function or method that may not be able to handle a `false`. Loading history...
116
117			$url = add_query_arg( $this->get_global_params(), $url );
118			}
119			}
120			}
121
122			return $url;
123			}
124
125			/**
126			* Set params when running image_downsize
127			*
128			* @param false\|array $return
129			* @param int $attachment_id
130			* @param string\|array $size
131			*
132			* @return false\|array
133			*/
134			public function image_downsize( $return, $attachment_id, $size ) {
135			if ( ! empty ( $this->options['cdn_link'] ) ) {
136			$img_url = wp_get_attachment_url( $attachment_id );
137
138			$params = [];
139			if ( is_array( $size ) ) {
140			$params['w'] = $width = isset( $size[0] ) ? $size[0] : 0;
141			$params['h'] = $height = isset( $size[1] ) ? $size[1] : 0;
142			} else {
143			$available_sizes = $this->get_all_defined_sizes();
144			if ( isset( $available_sizes[ $size ] ) ) {
145			$size = $available_sizes[ $size ];
146			$params['w'] = $width = $size['width'];
147			$params['h'] = $height = $size['height'];
148			}
149			}
150
151			$params = array_filter( $params );
152
153			$img_url = add_query_arg( $params, $img_url );
154
155			if ( ! isset( $width ) \|\| ! isset( $height ) ) {
156			// any other type: use the real image
157			$meta = wp_get_attachment_metadata( $attachment_id );
158			$width = isset( $width ) ? $width : $meta['width'];
159			$height = isset( $height ) ? $height : $meta['height'];
160			}
161
162			$return = [ $img_url, $width, $height, true ];
163			}
164
165			return $return;
166			}
167
168			/**
169			* Change url for images in srcset
170			*
171			* @param array $image_meta
172			* @param array $size_array
173			* @param string $image_src
174			*
175			* @return array
176			*/
177			public function calculate_image_srcset( $image_meta, $size_array, $image_src ) {
178			foreach ( $image_meta as $i => $image_size ) {
179			if ( $image_size['descriptor'] === 'w' ) {
180			$image_src = remove_query_arg( 'h', $image_src );
181			$image_meta[ $i ]['url'] = add_query_arg( 'w', $image_size['value'], $image_src );
182			}
183			}
184
185			return $image_meta;
186			}
187
188			/**
189			* Modify image urls in content to use imgix host.
190			*
191			* @param $content
192			*
193			* @return string
194			*/
195			public function replace_images_in_content( $content ) {
196			if ( ! empty ( $this->options['cdn_link'] ) ) {
197			$content = preg_replace_callback( '/(?<=\shref="\|\ssrc="\|\shref=\'\|\ssrc=\').*(?=\'\|")/', function ( $match ) {
198			return esc_url( apply_filters( 'imgix/add-image-url', $match[0] ) );
199			}, $content );
200
201			}
202
203			return $content;
204			}
205
206			/**
207			* Add tag to dns prefetch cdn host
208			*/
209			public function prefetch_cdn() {
210			if ( ! empty ( $this->options['cdn_link'] ) ) {
211			$host = parse_url( $this->options['cdn_link'], PHP_URL_HOST );
212
213			printf(
214			'<link rel="dns-prefetch" href="%s"/>',
215			esc_attr( '//' . $host )
216			);
217			}
218			}
219
220			/**
221			* Start output buffer if auto retina is enabled
222			*/
223			public function buffer_start_for_retina() {
224			if ( ! empty ( $this->options['add_dpi2_srcset'] ) ) {
225			$this->buffer_started = true;
226			ob_start( [ $this, 'add_retina' ] );
227			}
228			}
229
230			/**
231			* Stop output buffer if it was enabled by the plugin
232			*/
233			public function buffer_end_for_retina() {
234			if ( $this->buffer_started === true ) {
235			ob_end_flush();
236			}
237			}
238
239			/**
240			* Returns a array of global parameters to be applied in all images,
241			* according to plugin's settings.
242			*
243			* @return array Global parameters to be appened at the end of each img URL.
244			*/
245			protected function get_global_params() {
246			$params = [];
247
248			// For now, only "auto" is supported.
249			$auto = [];
250			if ( ! empty ( $this->options['auto_format'] ) ) {
251			array_push( $auto, 'format' );
252			}
253
254			if ( ! empty ( $this->options['auto_enhance'] ) ) {
255			array_push( $auto, 'enhance' );
256			}
257
258			if ( ! empty( $auto ) ) {
259			$params['auto'] = implode( '%2C', $auto );
260			}
261
262			return $params;
263			}
264
265			/**
266			* Get all defined image sizes
267			*
268			* @return array
269			*/
270			protected function get_all_defined_sizes() {
271			// Make thumbnails and other intermediate sizes.
272			$theme_image_sizes = wp_get_additional_image_sizes();
273
274			$sizes = [];
275			foreach ( get_intermediate_image_sizes() as $s ) {
276			$sizes[ $s ] = [ 'width' => '', 'height' => '', 'crop' => false ];
277			if ( isset( $theme_image_sizes[ $s ] ) ) {
278			// For theme-added sizes
279			$sizes[ $s ]['width'] = intval( $theme_image_sizes[ $s ]['width'] );
280			$sizes[ $s ]['height'] = intval( $theme_image_sizes[ $s ]['height'] );
281			$sizes[ $s ]['crop'] = $theme_image_sizes[ $s ]['crop'];
282			} else {
283			// For default sizes set in options
284			$sizes[ $s ]['width'] = get_option( "{$s}_size_w" );
285			$sizes[ $s ]['height'] = get_option( "{$s}_size_h" );
286			$sizes[ $s ]['crop'] = get_option( "{$s}_crop" );
287			}
288			}
289
290			return $sizes;
291			}
292			}
293
294			Images_Via_Imgix::instance();
295

imgix-wordpress / images-via-imgix

Pull Request — master (#18)

Images_Via_Imgix::image_downsize() D

Complexity

Size

Duplication

Importance

How to fix Complexity

Long Method

Duplication Side-by-Side

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