FreshRSS/app/models/RSSThemes.php

<?php

class RSSThemes extends Model {
	private static $themes_dir = '/themes';

	private static $list = array();

	public static function init() {
		$basedir = PUBLIC_PATH . self::$themes_dir;

		$themes_list = array_diff(
			scandir($basedir),
			array('..', '.')
		);

		foreach ($themes_list as $theme_dir) {
			$json_filename = $basedir . '/' . $theme_dir . '/metadata.json';
			if(file_exists($json_filename)) {
				$content = file_get_contents($json_filename);
				$res = json_decode($content, true);

				if($res &&
					isset($res['name']) &&
					isset($res['author']) &&
					isset($res['description']) &&
					isset($res['version']) &&
					isset($res['files']) && is_array($res['files'])) {
					$theme = $res;
					$theme['path'] = $theme_dir;
					self::$list[$theme_dir] = $theme;
				}
			}
		}
	}

	public static function get() {
		return self::$list;
	}

	public static function get_infos($theme_id) {
		if (isset(self::$list[$theme_id])) {
			return self::$list[$theme_id];
		}

		return false;
	}

	public static function icon($name) {
		static $alts = array(
			'add' => '✚',
			'all' => '☰',
			'bookmark' => '★',
			'category' => '☷',
			'category-white' => '☷',
			'close' => '❌',
			'configure' => '⚙',
			'down' => '▽',
			'favorite' => '★',
			'help' => 'ⓘ',
			'link' => '↗',
			'login' => '🔒',
			'logout' => '🔓',
			'next' => '⏩',
			'non-starred' => '☆',
			'prev' => '⏪',
			'read' => '☑',
			'unread' => '☐',
			'refresh' => '🔃',	//↻
			'search' => '🔍',
			'share' => '♺',
			'starred' => '★',
			'tag' => '⚐',
			'up' => '△',
		);
		$alt = isset($alts[$name]) ? $alts[$name] : '?';
		return '<i class="icon i_' . $name . '">' . $alts[$name] . '</i>';
		//return '<img class="icon" src="' . Url::display('/themes/icons/' . $name . '.svg') . '" alt="' . $alts[$name] . '" />';
	}
}