TwentyNineteen_SVG_Icons

22<?php23class TwentyNineteen_SVG_Icons {24 25	/**26	 * Gets the SVG code for a given icon.27	 *28	 * @param string $group The group of icons ('ui' or 'social').29	 * @param string $icon  The specific icon to retrieve.30	 * @param int    $size  The desired width and height for the SVG icon.31	 */32	public static function get_svg( $group, $icon, $size ) {33		if ( 'ui' === $group ) {34			$arr = self::$ui_icons;35		} elseif ( 'social' === $group ) {36			$arr = self::$social_icons;37		} else {38			$arr = array();39		}40		if ( array_key_exists( $icon, $arr ) ) {41			$repl = sprintf( '<svg class="svg-icon" width="%d" height="%d" aria-hidden="true" role="img" focusable="false" ', $size, $size );42			$svg  = preg_replace( '/^<svg /', $repl, trim( $arr[ $icon ] ) ); // Add extra attributes to SVG code.43			$svg  = preg_replace( "/([\n\t]+)/", ' ', $svg ); // Remove newlines & tabs.44			$svg  = preg_replace( '/>\s*</', '><', $svg );    // Remove whitespace between SVG tags.45			return $svg;46		}47		return null;48	}49 50	/**51	 * Detects the social network from a URL and returns the SVG code for its icon.52	 *53	 * @param string $uri  The URL of the social network link.54	 * @param int    $size The desired width and height for the SVG icon.55	 */56	public static function get_social_link_svg( $uri, $size ) {57		static $regex_map; // Only compute regex map once, for performance.58		if ( ! isset( $regex_map ) ) {59			$regex_map = array();60			$map       = &self::$social_icons_map; // Use reference instead of copy, to save memory.61			foreach ( array_keys( self::$social_icons ) as $icon ) {62				$domains            = array_key_exists( $icon, $map ) ? $map[ $icon ] : array( sprintf( '%s.com', $icon ) );63				$domains            = array_map( 'trim', $domains ); // Remove leading/trailing spaces, to prevent regex from failing to match.64				$domains            = array_map( 'preg_quote', $domains );65				$regex_map[ $icon ] = sprintf( '/(%s)/i', implode( '|', $domains ) );66			}67		}68		foreach ( $regex_map as $icon => $regex ) {69			if ( preg_match( $regex, $uri ) ) {70				return self::get_svg( 'social', $icon, $size );71			}72		}73		return null;74	}75 76	/**77	 * User Interface icons – svg sources.78	 *79	 * @var array80	 */81	public static $ui_icons = array(82		'link'                     => /* material-design – link */ '83<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">84    <path d="M0 0h24v24H0z" fill="none"></path>85    <path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"></path>86</svg>',87 88		'watch'                    => /* material-design – watch-later */ '89<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">90    <defs>91        <path id="a" d="M0 0h24v24H0V0z"></path>92    </defs>93    <clipPath id="b">94        <use xlink:href="#a" overflow="visible"></use>95    </clipPath>96    <path clip-path="url(#b)" d="M12 2C6.5 2 2 6.5 2 12s4.5 10 10 10 10-4.5 10-10S17.5 2 12 2zm4.2 14.2L11 13V7h1.5v5.2l4.5 2.7-.8 1.3z"></path>97</svg>',98 99		'archive'                  => /* material-design – folder */ '100<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">101    <path d="M10 4H4c-1.1 0-1.99.9-1.99 2L2 18c0 1.1.9 2 2 2h16c1.1 0 2-.9 2-2V8c0-1.1-.9-2-2-2h-8l-2-2z"></path>102    <path d="M0 0h24v24H0z" fill="none"></path>