content: /*
   * Symphony - A modern community (forum/BBS/SNS/blog) platform written in Java.
   * Copyright (C) 2012-present, b3log.org
   *
   * This program is free software: you can redistribute it and/or modify
   * it under the terms of the GNU Affero 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 Affero General Public License for more details.
   *
   * You should have received a copy of the GNU Affero General Public License
   * along with this program.  If not, see <https://www.gnu.org/licenses/>.
   */
  package org.b3log.symphony.util;
  
  import org.json.JSONObject;
  import org.owasp.encoder.Encode;
  
  import java.util.Iterator;
  
  /**
   * Escape utilities.
   *
   * @author <a href="http://88250.b3log.org">Liang Ding</a>
   * @version 1.1.0.0, Jan 31, 2019
   * @since 2.3.0
   */
  public final class Escapes {
      /**
       * Sanitizes the specified file name.
       *
       * @param unsanitized the specified file name
       * @return sanitized file name
       */
      public static String sanitizeFilename(final String unsanitized) {
          return unsanitized.
                  replaceAll("[\\?\\\\/:|<>\\*\\[\\]]", "-"). // ? \ / : | < > * [ ] to -
                  replaceAll("\\s+", "-");              // white space to -
      }
  
      /**
       * Escapes the specified string.
       *
       * @param str the specified string
       */
      public static String escapeHTML(final String str) {
          return Encode.forHtml(str);
      }
  
      /**
       * Escapes string property in the specified JSON object.
       *
       * @param jsonObject the specified JSON object
       */
      public static void escapeHTML(final JSONObject jsonObject) {
          final Iterator<String> keys = jsonObject.keys();
          while (keys.hasNext()) {
              final String key = keys.next();
              if (jsonObject.opt(key) instanceof String) {
                  jsonObject.put(key, Encode.forHtml(jsonObject.optString(key)));
              }
          }
      }
  
      /**
       * Private constructor.
       */
      private Escapes() {
      }
  
  }
  