content: /*
   * Copyright (C) 2014 Andrew Comminos
   *
   * This program is free software: you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation, either version 3 of the License, or
   * (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
   */
  
  package com.morlunk.mumbleclient.util;
  
  import android.text.TextUtils;
  
  import java.net.URI;
  
  public class HtmlUtils {
      /**
       * Tries to get the link's hostname, returns `null` if not a valid URL.
       * @param link link to get the hostname of
       * @return String?
       */
      public static String getHostnameFromLink(String link) {
          // Cheap pre-check
          if (link.contains("://")) {
              try {
                  URI maybeURI = URI.create(link);
                  if (!TextUtils.isEmpty(maybeURI.getHost())) {
                      return maybeURI.getHost();
                  }
              } catch (IllegalArgumentException e) {
                  // not a valid URI
              }
          }
          return null;
      }
  }
  