content: /*
   *  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.causeway.security.shiro.permrolemapper;
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Map;
  import java.util.Set;
  import java.util.stream.Collectors;
  
  import org.apache.causeway.commons.internal.base._Strings;
  import org.apache.causeway.commons.internal.collections._Maps;
  
  class Util {
  
      public static Map<String, Set<String>> parse(String permissionsByRoleStr) {
          final Map<String, Set<String>> permsByRole = _Maps.newHashMap();
  
          final List<String> roleAndPerms = new ArrayList<>(2);
  
          _Strings.splitThenStream(permissionsByRoleStr, ";")
          .forEach(roleAndPermsStr->{
  
              roleAndPerms.clear();
  
              _Strings.splitThenStream(roleAndPermsStr, "=")
              .map(String::trim)
              .forEach(roleAndPerms::add);
  
              if(roleAndPerms.size() != 2) {
                  return;
              }
              final String role = roleAndPerms.get(0);
              final String permStr = roleAndPerms.get(1);
  
              final Set<String> perms = _Strings.splitThenStream(permStr, ",")
                      .map(String::trim)
                      .collect(Collectors.toSet());
  
              permsByRole.put(role, perms);
          });
  
          return permsByRole;
      }
  }
  