Expansion Shortcode Core Plugin

<?php
namespace Grav\Plugin\Shortcodes;

use Thunder\Shortcode\Shortcode\ShortcodeInterface;

class IconShortcode extends Shortcode
{
    public function init()
    {
        $this->shortcode->getHandlers()->add('icon', function(ShortcodeInterface $sc) {
            $class = $sc->getParameter('class');
            $icon = $sc->getParameter('icon');
            $color = $sc->getParameter('color');
            $svg = $sc->getParameter('svg');
            $wh = $sc->getParameter('wh');

            $class_output = $class ? ' class="' . $class . '"' : '';
            $icon_output = $icon ? '<span class="uk-margin-small-right" uk-icon="icon: ' . $icon . '"></span>' : '';
            $svg_output = $svg ? '<img src="theme://images/svg/' . $svg . '.svg" width="' . $wh . '" height="' . $wh . '" uk-svg>' : '';

            $content = $sc->getContent();

            if ($svg_output) { 
              $content = $svg_output . $content;
            }
            if ($icon_output) {
              $content = $icon_output . $content;
            }
            return $content;
        });
    }
}

   RocketTheme\Toolbox\ResourceLocator\UniformResourceLocator::findResource

   Find highest priority instance from a resource.

   <?php
   public function findResource($uri, $absolute = true, $first = false) { }

   @param string $uri — Input URI to be searched.
   @param bool $absolute — Whether to return absolute path.
   @param bool $first — Whether to return first path even if it doesn't exist.
   @return string|false

   @throws BadMethodCallException

    public function findResource($uri, $absolute = true, $first = false)
    {
        if (!is_string($uri)) {
            throw new BadMethodCallException('Invalid parameter $uri.');
        }

        /** @var string|false $cached */
        $cached = $this->findCached($uri, false, $absolute, $first);

        return $cached;
    }