/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
    *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  package org.apache.chemistry.opencmis.commons.impl;
  
  public final class XMLConstraints {
  
      public static final int MAX_STRING_LENGTH = 100 * 1024;
  
      public static final int MAX_EXTENSIONS_WIDTH;
      public static final int MAX_EXTENSIONS_DEPTH;
  
      public static final int MAX_EXTENSIONS_WIDTH_DEFAULT = 1000;
      public static final int MAX_EXTENSIONS_DEPTH_DEFAULT = 100;
  
      public static final String MAX_EXTENSIONS_WIDTH_SYSTEM_PROPERTY = "org.apache.chemistry.opencmis.XMLConstraints.maxExtensionWith";
      public static final String MAX_EXTENSIONS_DEPTH_SYSTEM_PROPERTY = "org.apache.chemistry.opencmis.XMLConstraints.maxExtensionDepth";
  
      static {
          int maxWidth = MAX_EXTENSIONS_WIDTH_DEFAULT;
          try {
              String maxWidthStr = System.getProperty(MAX_EXTENSIONS_WIDTH_SYSTEM_PROPERTY);
              if (maxWidthStr != null) {
                  maxWidth = Integer.parseInt(maxWidthStr);
  
                  // check for sane values
                  if (maxWidth < 1 || maxWidth > 100000) {
                      maxWidth = MAX_EXTENSIONS_WIDTH_DEFAULT;
                  }
              }
          } catch (NumberFormatException e) {
              // ignore
          }
          MAX_EXTENSIONS_WIDTH = maxWidth;
  
          int maxDepth = MAX_EXTENSIONS_DEPTH_DEFAULT;
          try {
              String maxDepthStr = System.getProperty(MAX_EXTENSIONS_DEPTH_SYSTEM_PROPERTY);
              if (maxDepthStr != null) {
                  maxDepth = Integer.parseInt(maxDepthStr);
  
                  // check for sane values
                  if (maxDepth < 1 || maxDepth > 10000) {
                      maxDepth = MAX_EXTENSIONS_DEPTH_DEFAULT;
                  }
              }
          } catch (NumberFormatException e) {
              // ignore
          }
          MAX_EXTENSIONS_DEPTH = maxDepth;
      }
  
      private XMLConstraints() {
      }
  }