Kirki_Fonts_Google::get_url_contents() - Code Metrics - Inspection of "Update codeMirror" - aristath/kirki - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — develop ( fff6df...34fdaa )

by Aristeides

created 2017-04-23 15:59 UTC

Kirki_Fonts_Google::get_url_contents() B

↳ Parent: Kirki_Fonts_Google

Complexity

Conditions	6
Paths	10

Size

Total Lines	49
Code Lines	20

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	6
eloc	20
nc	10
nop	1
dl	0
loc	49
rs	8.5906
c	0
b	0
f	0

<?php
/**
 * Processes typography-related fields
 * and generates the google-font link.
 *
 * @package     Kirki
 * @category    Core
 * @author      Aristeides Stathopoulos
 * @copyright   Copyright (c) 2016, Aristeides Stathopoulos
 * @license     http://opensource.org/licenses/https://opensource.org/licenses/MIT
 * @since       1.0
 */

/**
 * Manages the way Google Fonts are enqueued.
 */
final class Kirki_Fonts_Google {

	/**
	 * The Kirki_Fonts_Google instance.
	 * We use the singleton pattern here to avoid loading the google-font array multiple times.
	 * This is mostly a performance tweak.
	 *
	 * @access private
	 * @var null|object
	 */
	private static $instance = null;

	/**
	 * If set to true, forces loading ALL variants.
	 *
	 * @static
	 * @access public
	 * @var bool
	 */
	public static $force_load_all_variants = false;

	/**
	 * If set to true, forces loading ALL subsets.
	 *
	 * @static
	 * @access public
	 * @var bool
	 */
	public static $force_load_all_subsets = false;

	/**
	 * The array of fonts
	 *
	 * @access private
	 * @var array
	 */
	private $fonts = array();

	/**
	 * An array of all google fonts.
	 *
	 * @access private
	 * @var array
	 */
	private $google_fonts = array();

	/**
	 * The array of subsets
	 *
	 * @access private
	 * @var array
	 */
	private $subsets = array();

	/**
	 * The google link
	 *
	 * @access private
	 * @var string
	 */
	private $link = '';

	/**
	 * Which method to use when loading googlefonts.
	 * Available options: link, js, embed.
	 *
	 * @static
	 * @access private
	 * @since 3.0.0
	 * @var string
	 */
	private static $method = array(
		'global' => 'embed',
	);

	/**
	 * Whether we should fallback to the link method or not.
	 *
	 * @access private
	 * @since 3.0.0
	 * @var bool
	 */
	private $fallback_to_link = false;

	/**
	 * The class constructor.
	 */
	private function __construct() {

		$config = apply_filters( 'kirki/config', array() );

		// Get the $fallback_to_link value from transient.
		$fallback_to_link = get_transient( 'kirki_googlefonts_fallback_to_link' );
		if ( 'yes' === $fallback_to_link ) {
			$this->fallback_to_link = true;
		}

		// If we have set $config['disable_google_fonts'] to true then do not proceed any further.
		if ( isset( $config['disable_google_fonts'] ) && true === $config['disable_google_fonts'] ) {
			return;
		}

		// Populate the array of google fonts.
		$this->google_fonts = Kirki_Fonts::get_google_fonts();

		// Process the request.
		$this->process_request();

	}

	/**
	 * Processes the request according to the method we're using.
	 *
	 * @access protected
	 * @since 3.0.0
	 */
	protected function process_request() {

		// Figure out which method to use for all.
		$method = 'link';
		foreach ( self::$method as $config_id => $method ) {

			if ( 'embed' === $method && true !== $this->fallback_to_link ) {
				$method = 'embed';
			}
		}
		foreach ( self::$method as $config_id => $config_method ) {


			switch ( $method ) {

				case 'embed':
					add_filter( 'kirki/' . $config_id . '/dynamic_css', array( $this, 'embed_css' ) );

					if ( true === $this->fallback_to_link ) {
						// Fallback to enqueue method.
						add_action( 'wp_enqueue_scripts', array( $this, 'enqueue' ), 105 );
					}
					break;
				case 'js':
					// TODO: Build a JS method.
					break;
				case 'link':
					// Enqueue link.
					add_action( 'wp_enqueue_scripts', array( $this, 'enqueue' ), 105 );
					break;
			}
		}
	}

	/**
	 * Get the one, true instance of this class.
	 * Prevents performance issues since this is only loaded once.
	 *
	 * @return object Kirki_Fonts_Google
	 */
	public static function get_instance() {
		if ( null === self::$instance ) {
			self::$instance = new Kirki_Fonts_Google();
		}
		return self::$instance;
	}

	/**
	 * Calls all the other necessary methods to populate and create the link.
	 */
	public function enqueue() {

		// Go through our fields and populate $this->fonts.
		$this->loop_fields();

		$this->fonts = apply_filters( 'kirki/enqueue_google_fonts', $this->fonts );

		// Goes through $this->fonts and adds or removes things as needed.
		$this->process_fonts();

		// Go through $this->fonts and populate $this->link.
		$this->create_link();

		// If $this->link is not empty then enqueue it.
		if ( '' !== $this->link ) {
			wp_enqueue_style( 'kirki_google_fonts', $this->link, array(), null );
		}
	}

	/**
	 * Goes through all our fields and then populates the $this->fonts property.
	 */
	private function loop_fields() {
		foreach ( Kirki::$fields as $field ) {
			$this->generate_google_font( $field );
		}
	}

	/**
	 * Processes the arguments of a field
	 * determines if it's a typography field
	 * and if it is, then takes appropriate actions.
	 *
	 * @param array $args The field arguments.
	 */
	private function generate_google_font( $args ) {

		// Process typography fields.
		if ( isset( $args['type'] ) && 'kirki-typography' === $args['type'] ) {

			// Get the value.
			$value = Kirki_Values::get_sanitized_field_value( $args );

			// If we don't have a font-family then we can skip this.
			if ( ! isset( $value['font-family'] ) ) {
				return;
			}

			// Add support for older formats of the typography control.
			// We used to have font-weight instead of variant.
			if ( isset( $value['font-weight'] ) && ( ! isset( $value['variant'] ) || empty( $value['variant'] ) ) ) {
				$value['variant'] = $value['font-weight'];
			}

			// Set a default value for variants.
			if ( ! isset( $value['variant'] ) ) {
				$value['variant'] = 'regular';
			}
			if ( isset( $value['subsets'] ) ) {

				// Add the subset directly to the array of subsets in the Kirki_GoogleFonts_Manager object.
				// Subsets must be applied to ALL fonts if possible.
				if ( ! is_array( $value['subsets'] ) ) {
					$this->subsets[] = $value['subsets'];
				} else {
					foreach ( $value['subsets'] as $subset ) {
						$this->subsets[] = $subset;
					}
				}
			}

			// Add the requested google-font.
			if ( ! isset( $this->fonts[ $value['font-family'] ] ) ) {
				$this->fonts[ $value['font-family'] ] = array();
			}
			if ( ! in_array( $value['variant'], $this->fonts[ $value['font-family'] ], true ) ) {
				$this->fonts[ $value['font-family'] ][] = $value['variant'];
			}
		} else {

			// Process non-typography fields.
			if ( isset( $args['output'] ) && is_array( $args['output'] ) ) {
				foreach ( $args['output'] as $output ) {

					// If we don't have a typography-related output argument we can skip this.
					if ( ! isset( $output['property'] ) || ! in_array( $output['property'], array( 'font-family', 'font-weight', 'font-subset', 'subset', 'subsets' ), true ) ) {
						continue;
					}

					// Get the value.
					$value = Kirki_Values::get_sanitized_field_value( $args );

					if ( 'font-family' === $output['property'] ) {
						if ( ! array_key_exists( $value, $this->fonts ) ) {
							$this->fonts[ $value ] = array();
						}
					} elseif ( 'font-weight' === $output['property'] ) {
						foreach ( $this->fonts as $font => $variants ) {
							if ( ! in_array( $value, $variants, true ) ) {
								$this->fonts[ $font ][] = $value;
							}
						}
					} elseif ( 'font-subset' === $output['property'] || 'subset' === $output['property'] || 'subsets' === $output['property'] ) {
						if ( ! is_array( $value ) ) {
							if ( ! in_array( $value, $this->subsets, true ) ) {
								$this->subsets[] = $value;
							}
						} else {
							foreach ( $value as $subset ) {
								if ( ! in_array( $subset, $this->subsets, true ) ) {
									$this->subsets[] = $subset;
								}
							}
						}
					}
				}
			} // End if().
		} // End if().
	}

	/**
	 * Determines the vbalidity of the selected font as well as its properties.
	 * This is vital to make sure that the google-font script that we'll generate later
	 * does not contain any invalid options.
	 */
	private function process_fonts() {

		// Early exit if font-family is empty.
		if ( empty( $this->fonts ) ) {
			return;
		}

		$valid_subsets = array();
		foreach ( $this->fonts as $font => $variants ) {

			// Determine if this is indeed a google font or not.
			// If it's not, then just remove it from the array.
			if ( ! array_key_exists( $font, $this->google_fonts ) ) {
				unset( $this->fonts[ $font ] );
				continue;
			}

			// Get all valid font variants for this font.
			$font_variants = array();
			if ( isset( $this->google_fonts[ $font ]['variants'] ) ) {
				$font_variants = $this->google_fonts[ $font ]['variants'];
			}
			foreach ( $variants as $variant ) {

				// If this is not a valid variant for this font-family
				// then unset it and move on to the next one.
				if ( ! in_array( $variant, $font_variants, true ) ) {
					$variant_key = array_search( $variant, $this->fonts[ $font ] );
					unset( $this->fonts[ $font ][ $variant_key ] );
					continue;
				}
			}

			// Check if the selected subsets exist, even in one of the selected fonts.
			// If they don't, then they have to be removed otherwise the link will fail.
			if ( isset( $this->google_fonts[ $font ]['subsets'] ) ) {
				foreach ( $this->subsets as $subset ) {
					if ( in_array( $subset, $this->google_fonts[ $font ]['subsets'], true ) ) {
						$valid_subsets[] = $subset;
					}
				}
			}
		}
		$this->subsets = $valid_subsets;
	}

	/**
	 * Creates the google-fonts link.
	 */
	private function create_link() {

		// If we don't have any fonts then we can exit.
		if ( empty( $this->fonts ) ) {
			return;
		}

		// Add a fallback to Roboto.
		$font = 'Roboto';

		// Get font-family + subsets.
		$link_fonts = array();
		foreach ( $this->fonts as $font => $variants ) {

			// Are we force-loading all variants?
			if ( true === self::$force_load_all_variants ) {
				if ( isset( $this->google_fonts[ $font ]['variants'] ) ) {
					$variants = $this->google_fonts[ $font ]['variants'];
				}
			}
			$variants = implode( ',', $variants );

			$link_font = str_replace( ' ', '+', $font );
			if ( ! empty( $variants ) ) {
				$link_font .= ':' . $variants;
			}
			$link_fonts[] = $link_font;
		}

		// Are we force-loading all subsets?
		if ( true === self::$force_load_all_subsets ) {

			if ( isset( $this->google_fonts[ $font ]['subsets'] ) ) {
				foreach ( $this->google_fonts[ $font ]['subsets'] as $subset ) {
					$this->subsets[] = $subset;
				}
			}
		}

		if ( ! empty( $this->subsets ) ) {
			$this->subsets = array_unique( $this->subsets );
		}

		$this->link = add_query_arg( array(
			'family' => str_replace( '%2B', '+', urlencode( implode( '|', $link_fonts ) ) ),
			'subset' => urlencode( implode( ',', $this->subsets ) ),
		), 'https://fonts.googleapis.com/css' );

	}

	/**
	 * Sets the method to use for loading the fonts.
	 *
	 * @static
	 * @access public
	 * @since 3.0.0
	 * @param string $config_id The config ID. Will be used in a filter later.
	 * @param string $method    The method to use.
	 */
	public static function set_method( $config_id = 'global', $method = 'link' ) {

		$valid_methods = array(
			'link',
			'js',
			'embed',
		);
		// Early exit if the defined method is invalid.
		if ( ! in_array( $method, $valid_methods ) ) {
			$method = 'embed';
		}
		self::$method[ $config_id ] = $method;
	}

	/**
	 * Get the contents of a remote google-fonts link.
	 * Responses get cached for 1 day.
	 *
	 * @access protected
	 * @since 3.0.0
	 * @param string $url The link we want to get.
	 * @return string|false Returns false if there's an error.
	 */
	protected function get_url_contents( $url = '' ) {

		// If $url is not set, use $this->link.
		$url = ( '' === $url ) ? $this->link : $url;

		// Sanitize the URL.
		$url = esc_url_raw( $url );

		// The transient name.
		$transient_name = 'kirki_googlefonts_contents_' . md5( $url );

		// Get the transient value.
		$html = get_transient( $transient_name );

		// Check for transient, if none, grab remote HTML file.
		if ( false === $html ) {

			// Get remote HTML file.
			$response = wp_remote_get( $url );


			// Check for error.
			if ( is_wp_error( $response ) ) {
				set_transient( 'kirki_googlefonts_fallback_to_link', 'yes', HOUR_IN_SECONDS );
				return false;
			}

			// Parse remote HTML file.
			$data = wp_remote_retrieve_body( $response );

			// Check for error.
			if ( is_wp_error( $data ) ) {
				set_transient( 'kirki_googlefonts_fallback_to_link', 'yes', HOUR_IN_SECONDS );
				return false;
			}

			// If empty, return false.
			if ( ! $data ) {
				set_transient( 'kirki_googlefonts_fallback_to_link', 'yes', HOUR_IN_SECONDS );
				return false;
			}

			// Store remote HTML file in transient, expire after 24 hours.
			set_transient( $transient_name, $data, DAY_IN_SECONDS );
			set_transient( 'kirki_googlefonts_fallback_to_link', 'no', DAY_IN_SECONDS );
		}

		return $html;

	}

	/**
	 * Embeds the CSS from googlefonts API inside the Kirki output CSS.
	 *
	 * @access public
	 * @since 3.0.0
	 * @param string $css The original CSS.
	 * @return string     The modified CSS.
	 */
	public function embed_css( $css ) {

		// Go through our fields and populate $this->fonts.
		$this->loop_fields();

		$this->fonts = apply_filters( 'kirki/enqueue_google_fonts', $this->fonts );

		// Goes through $this->fonts and adds or removes things as needed.
		$this->process_fonts();

		// Go through $this->fonts and populate $this->link.
		$this->create_link();

		// If $this->link is not empty then enqueue it.
		if ( '' !== $this->link ) {
			return $this->get_url_contents( $this->link ) . "\n" . $css;
		}
		return $css;
	}
}


1			<?php
2			/**
3			* Processes typography-related fields
4			* and generates the google-font link.
5			*
6			* @package Kirki
7			* @category Core
8			* @author Aristeides Stathopoulos
9			* @copyright Copyright (c) 2016, Aristeides Stathopoulos
10			* @license http://opensource.org/licenses/https://opensource.org/licenses/MIT
11			* @since 1.0
12			*/
13
14			/**
15			* Manages the way Google Fonts are enqueued.
16			*/
17			final class Kirki_Fonts_Google {
18
19			/**
20			* The Kirki_Fonts_Google instance.
21			* We use the singleton pattern here to avoid loading the google-font array multiple times.
22			* This is mostly a performance tweak.
23			*
24			* @access private
25			* @var null\|object
26			*/
27			private static $instance = null;
28
29			/**
30			* If set to true, forces loading ALL variants.
31			*
32			* @static
33			* @access public
34			* @var bool
35			*/
36			public static $force_load_all_variants = false;
37
38			/**
39			* If set to true, forces loading ALL subsets.
40			*
41			* @static
42			* @access public
43			* @var bool
44			*/
45			public static $force_load_all_subsets = false;
46
47			/**
48			* The array of fonts
49			*
50			* @access private
51			* @var array
52			*/
53			private $fonts = array();
54
55			/**
56			* An array of all google fonts.
57			*
58			* @access private
59			* @var array
60			*/
61			private $google_fonts = array();
62
63			/**
64			* The array of subsets
65			*
66			* @access private
67			* @var array
68			*/
69			private $subsets = array();
70
71			/**
72			* The google link
73			*
74			* @access private
75			* @var string
76			*/
77			private $link = '';
78
79			/**
80			* Which method to use when loading googlefonts.
81			* Available options: link, js, embed.
82			*
83			* @static
84			* @access private
85			* @since 3.0.0
86			* @var string
87			*/
88			private static $method = array(
89			'global' => 'embed',
90			);
91
92			/**
93			* Whether we should fallback to the link method or not.
94			*
95			* @access private
96			* @since 3.0.0
97			* @var bool
98			*/
99			private $fallback_to_link = false;
100
101			/**
102			* The class constructor.
103			*/
104			private function __construct() {
105
106			$config = apply_filters( 'kirki/config', array() );
107
108			// Get the $fallback_to_link value from transient.
109			$fallback_to_link = get_transient( 'kirki_googlefonts_fallback_to_link' );
110			if ( 'yes' === $fallback_to_link ) {
111			$this->fallback_to_link = true;
112			}
113
114			// If we have set $config['disable_google_fonts'] to true then do not proceed any further.
115			if ( isset( $config['disable_google_fonts'] ) && true === $config['disable_google_fonts'] ) {
116			return;
117			}
118
119			// Populate the array of google fonts.
120			$this->google_fonts = Kirki_Fonts::get_google_fonts();
121
122			// Process the request.
123			$this->process_request();
124
125			}
126
127			/**
128			* Processes the request according to the method we're using.
129			*
130			* @access protected
131			* @since 3.0.0
132			*/
133			protected function process_request() {
134
135			// Figure out which method to use for all.
136			$method = 'link';
137			foreach ( self::$method as $config_id => $method ) {
			0 ignored issues – show Bug introduced 2017-04-23 20:00 UTC by Report Bug Copy Issue Report The expression `self::$method` of type `string` is not traversable. Loading history...
138			if ( 'embed' === $method && true !== $this->fallback_to_link ) {
139			$method = 'embed';
140			}
141			}
142			foreach ( self::$method as $config_id => $config_method ) {
			0 ignored issues – show Bug introduced 2017-04-23 20:00 UTC by Report Bug Copy Issue Report The expression `self::$method` of type `string` is not traversable. Loading history...
143
144			switch ( $method ) {
145
146			case 'embed':
147			add_filter( 'kirki/' . $config_id . '/dynamic_css', array( $this, 'embed_css' ) );
148
149			if ( true === $this->fallback_to_link ) {
150			// Fallback to enqueue method.
151			add_action( 'wp_enqueue_scripts', array( $this, 'enqueue' ), 105 );
152			}
153			break;
154			case 'js':
155			// TODO: Build a JS method.
156			break;
157			case 'link':
158			// Enqueue link.
159			add_action( 'wp_enqueue_scripts', array( $this, 'enqueue' ), 105 );
160			break;
161			}
162			}
163			}
164
165			/**
166			* Get the one, true instance of this class.
167			* Prevents performance issues since this is only loaded once.
168			*
169			* @return object Kirki_Fonts_Google
170			*/
171			public static function get_instance() {
172			if ( null === self::$instance ) {
173			self::$instance = new Kirki_Fonts_Google();
174			}
175			return self::$instance;
176			}
177
178			/**
179			* Calls all the other necessary methods to populate and create the link.
180			*/
181			public function enqueue() {
182
183			// Go through our fields and populate $this->fonts.
184			$this->loop_fields();
185
186			$this->fonts = apply_filters( 'kirki/enqueue_google_fonts', $this->fonts );
187
188			// Goes through $this->fonts and adds or removes things as needed.
189			$this->process_fonts();
190
191			// Go through $this->fonts and populate $this->link.
192			$this->create_link();
193
194			// If $this->link is not empty then enqueue it.
195			if ( '' !== $this->link ) {
196			wp_enqueue_style( 'kirki_google_fonts', $this->link, array(), null );
197			}
198			}
199
200			/**
201			* Goes through all our fields and then populates the $this->fonts property.
202			*/
203			private function loop_fields() {
204			foreach ( Kirki::$fields as $field ) {
205			$this->generate_google_font( $field );
206			}
207			}
208
209			/**
210			* Processes the arguments of a field
211			* determines if it's a typography field
212			* and if it is, then takes appropriate actions.
213			*
214			* @param array $args The field arguments.
215			*/
216			private function generate_google_font( $args ) {
217
218			// Process typography fields.
219			if ( isset( $args['type'] ) && 'kirki-typography' === $args['type'] ) {
220
221			// Get the value.
222			$value = Kirki_Values::get_sanitized_field_value( $args );
223
224			// If we don't have a font-family then we can skip this.
225			if ( ! isset( $value['font-family'] ) ) {
226			return;
227			}
228
229			// Add support for older formats of the typography control.
230			// We used to have font-weight instead of variant.
231			if ( isset( $value['font-weight'] ) && ( ! isset( $value['variant'] ) \|\| empty( $value['variant'] ) ) ) {
232			$value['variant'] = $value['font-weight'];
233			}
234
235			// Set a default value for variants.
236			if ( ! isset( $value['variant'] ) ) {
237			$value['variant'] = 'regular';
238			}
239			if ( isset( $value['subsets'] ) ) {
240
241			// Add the subset directly to the array of subsets in the Kirki_GoogleFonts_Manager object.
242			// Subsets must be applied to ALL fonts if possible.
243			if ( ! is_array( $value['subsets'] ) ) {
244			$this->subsets[] = $value['subsets'];
245			} else {
246			foreach ( $value['subsets'] as $subset ) {
247			$this->subsets[] = $subset;
248			}
249			}
250			}
251
252			// Add the requested google-font.
253			if ( ! isset( $this->fonts[ $value['font-family'] ] ) ) {
254			$this->fonts[ $value['font-family'] ] = array();
255			}
256			if ( ! in_array( $value['variant'], $this->fonts[ $value['font-family'] ], true ) ) {
257			$this->fonts[ $value['font-family'] ][] = $value['variant'];
258			}
259			} else {
260
261			// Process non-typography fields.
262			if ( isset( $args['output'] ) && is_array( $args['output'] ) ) {
263			foreach ( $args['output'] as $output ) {
264
265			// If we don't have a typography-related output argument we can skip this.
266			if ( ! isset( $output['property'] ) \|\| ! in_array( $output['property'], array( 'font-family', 'font-weight', 'font-subset', 'subset', 'subsets' ), true ) ) {
267			continue;
268			}
269
270			// Get the value.
271			$value = Kirki_Values::get_sanitized_field_value( $args );
272
273			if ( 'font-family' === $output['property'] ) {
274			if ( ! array_key_exists( $value, $this->fonts ) ) {
275			$this->fonts[ $value ] = array();
276			}
277			} elseif ( 'font-weight' === $output['property'] ) {
278			foreach ( $this->fonts as $font => $variants ) {
279			if ( ! in_array( $value, $variants, true ) ) {
280			$this->fonts[ $font ][] = $value;
281			}
282			}
283			} elseif ( 'font-subset' === $output['property'] \|\| 'subset' === $output['property'] \|\| 'subsets' === $output['property'] ) {
284			if ( ! is_array( $value ) ) {
285			if ( ! in_array( $value, $this->subsets, true ) ) {
286			$this->subsets[] = $value;
287			}
288			} else {
289			foreach ( $value as $subset ) {
290			if ( ! in_array( $subset, $this->subsets, true ) ) {
291			$this->subsets[] = $subset;
292			}
293			}
294			}
295			}
296			}
297			} // End if().
298			} // End if().
299			}
300
301			/**
302			* Determines the vbalidity of the selected font as well as its properties.
303			* This is vital to make sure that the google-font script that we'll generate later
304			* does not contain any invalid options.
305			*/
306			private function process_fonts() {
307
308			// Early exit if font-family is empty.
309			if ( empty( $this->fonts ) ) {
310			return;
311			}
312
313			$valid_subsets = array();
314			foreach ( $this->fonts as $font => $variants ) {
315
316			// Determine if this is indeed a google font or not.
317			// If it's not, then just remove it from the array.
318			if ( ! array_key_exists( $font, $this->google_fonts ) ) {
319			unset( $this->fonts[ $font ] );
320			continue;
321			}
322
323			// Get all valid font variants for this font.
324			$font_variants = array();
325			if ( isset( $this->google_fonts[ $font ]['variants'] ) ) {
326			$font_variants = $this->google_fonts[ $font ]['variants'];
327			}
328			foreach ( $variants as $variant ) {
329
330			// If this is not a valid variant for this font-family
331			// then unset it and move on to the next one.
332			if ( ! in_array( $variant, $font_variants, true ) ) {
333			$variant_key = array_search( $variant, $this->fonts[ $font ] );
334			unset( $this->fonts[ $font ][ $variant_key ] );
335			continue;
336			}
337			}
338
339			// Check if the selected subsets exist, even in one of the selected fonts.
340			// If they don't, then they have to be removed otherwise the link will fail.
341			if ( isset( $this->google_fonts[ $font ]['subsets'] ) ) {
342			foreach ( $this->subsets as $subset ) {
343			if ( in_array( $subset, $this->google_fonts[ $font ]['subsets'], true ) ) {
344			$valid_subsets[] = $subset;
345			}
346			}
347			}
348			}
349			$this->subsets = $valid_subsets;
350			}
351
352			/**
353			* Creates the google-fonts link.
354			*/
355			private function create_link() {
356
357			// If we don't have any fonts then we can exit.
358			if ( empty( $this->fonts ) ) {
359			return;
360			}
361
362			// Add a fallback to Roboto.
363			$font = 'Roboto';
364
365			// Get font-family + subsets.
366			$link_fonts = array();
367			foreach ( $this->fonts as $font => $variants ) {
368
369			// Are we force-loading all variants?
370			if ( true === self::$force_load_all_variants ) {
371			if ( isset( $this->google_fonts[ $font ]['variants'] ) ) {
372			$variants = $this->google_fonts[ $font ]['variants'];
373			}
374			}
375			$variants = implode( ',', $variants );
376
377			$link_font = str_replace( ' ', '+', $font );
378			if ( ! empty( $variants ) ) {
379			$link_font .= ':' . $variants;
380			}
381			$link_fonts[] = $link_font;
382			}
383
384			// Are we force-loading all subsets?
385			if ( true === self::$force_load_all_subsets ) {
386
387			if ( isset( $this->google_fonts[ $font ]['subsets'] ) ) {
388			foreach ( $this->google_fonts[ $font ]['subsets'] as $subset ) {
389			$this->subsets[] = $subset;
390			}
391			}
392			}
393
394			if ( ! empty( $this->subsets ) ) {
395			$this->subsets = array_unique( $this->subsets );
396			}
397
398			$this->link = add_query_arg( array(
399			'family' => str_replace( '%2B', '+', urlencode( implode( '\|', $link_fonts ) ) ),
400			'subset' => urlencode( implode( ',', $this->subsets ) ),
401			), 'https://fonts.googleapis.com/css' );
402
403			}
404
405			/**
406			* Sets the method to use for loading the fonts.
407			*
408			* @static
409			* @access public
410			* @since 3.0.0
411			* @param string $config_id The config ID. Will be used in a filter later.
412			* @param string $method The method to use.
413			*/
414			public static function set_method( $config_id = 'global', $method = 'link' ) {
415
416			$valid_methods = array(
417			'link',
418			'js',
419			'embed',
420			);
421			// Early exit if the defined method is invalid.
422			if ( ! in_array( $method, $valid_methods ) ) {
423			$method = 'embed';
424			}
425			self::$method[ $config_id ] = $method;
426			}
427
428			/**
429			* Get the contents of a remote google-fonts link.
430			* Responses get cached for 1 day.
431			*
432			* @access protected
433			* @since 3.0.0
434			* @param string $url The link we want to get.
435			* @return string\|false Returns false if there's an error.
436			*/
437			protected function get_url_contents( $url = '' ) {
438
439			// If $url is not set, use $this->link.
440			$url = ( '' === $url ) ? $this->link : $url;
441
442			// Sanitize the URL.
443			$url = esc_url_raw( $url );
444
445			// The transient name.
446			$transient_name = 'kirki_googlefonts_contents_' . md5( $url );
447
448			// Get the transient value.
449			$html = get_transient( $transient_name );
450
451			// Check for transient, if none, grab remote HTML file.
452			if ( false === $html ) {
453
454			// Get remote HTML file.
455			$response = wp_remote_get( $url );
			0 ignored issues – show introduced 2017-04-23 20:00 UTC by Report Bug Copy Issue Report wp_remote_get is highly discouraged, please use vip_safe_wp_remote_get() instead. Loading history...
456
457			// Check for error.
458			if ( is_wp_error( $response ) ) {
459			set_transient( 'kirki_googlefonts_fallback_to_link', 'yes', HOUR_IN_SECONDS );
460			return false;
461			}
462
463			// Parse remote HTML file.
464			$data = wp_remote_retrieve_body( $response );
465
466			// Check for error.
467			if ( is_wp_error( $data ) ) {
468			set_transient( 'kirki_googlefonts_fallback_to_link', 'yes', HOUR_IN_SECONDS );
469			return false;
470			}
471
472			// If empty, return false.
473			if ( ! $data ) {
474			set_transient( 'kirki_googlefonts_fallback_to_link', 'yes', HOUR_IN_SECONDS );
475			return false;
476			}
477
478			// Store remote HTML file in transient, expire after 24 hours.
479			set_transient( $transient_name, $data, DAY_IN_SECONDS );
480			set_transient( 'kirki_googlefonts_fallback_to_link', 'no', DAY_IN_SECONDS );
481			}
482
483			return $html;
484
485			}
486
487			/**
488			* Embeds the CSS from googlefonts API inside the Kirki output CSS.
489			*
490			* @access public
491			* @since 3.0.0
492			* @param string $css The original CSS.
493			* @return string The modified CSS.
494			*/
495			public function embed_css( $css ) {
496
497			// Go through our fields and populate $this->fonts.
498			$this->loop_fields();
499
500			$this->fonts = apply_filters( 'kirki/enqueue_google_fonts', $this->fonts );
501
502			// Goes through $this->fonts and adds or removes things as needed.
503			$this->process_fonts();
504
505			// Go through $this->fonts and populate $this->link.
506			$this->create_link();
507
508			// If $this->link is not empty then enqueue it.
509			if ( '' !== $this->link ) {
510			return $this->get_url_contents( $this->link ) . "\n" . $css;
511			}
512			return $css;
513			}
514			}
515

aristath / kirki

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Kirki_Fonts_Google::get_url_contents() B

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