package org.apache.archiva.webdav.util;
   
   /*
    * 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.
   */
  
  import org.apache.commons.lang.ArrayUtils;
  import org.apache.commons.lang.StringUtils;
  
  /**
   */
  public class RepositoryPathUtil
  {
      public static String getLogicalResource( final String href )
      {
          String logicalResource = null;
          String requestPathInfo = StringUtils.defaultString( href );
  
          //remove prefix ie /repository/blah becomes /blah
          requestPathInfo = removePrefix( requestPathInfo );
  
          // Remove prefixing slash as the repository id doesn't contain it;
          if ( requestPathInfo.startsWith( "/" ) )
          {
              requestPathInfo = requestPathInfo.substring( 1 );
          }
  
          int slash = requestPathInfo.indexOf( '/' );
          if ( slash > 0 )
          {
              logicalResource = requestPathInfo.substring( slash );
  
              if ( logicalResource.endsWith( "/.." ) )
              {
                  logicalResource += "/";
              }
  
              if ( logicalResource != null && logicalResource.startsWith( "//" ) )
              {
                  logicalResource = logicalResource.substring( 1 );
              }
  
              if ( logicalResource == null )
              {
                  logicalResource = "/";
              }
          }
          else
          {
              logicalResource = "/";
          }
          return logicalResource;
      }
  
      public static String getRepositoryName( final String href )
      {
          String requestPathInfo = StringUtils.defaultString( href );
  
          //remove prefix ie /repository/blah becomes /blah
          requestPathInfo = removePrefix( requestPathInfo );
  
          // Remove prefixing slash as the repository id doesn't contain it;
          if ( requestPathInfo.startsWith( "/" ) )
          {
              requestPathInfo = requestPathInfo.substring( 1 );
          }
  
          // Find first element, if slash exists.
          int slash = requestPathInfo.indexOf( '/' );
          if ( slash > 0 )
          {
              // Filtered: "central/org/apache/maven/" -> "central"
              return requestPathInfo.substring( 0, slash );
          }
          return requestPathInfo;
      }
  
      private static String removePrefix( final String href )
      {
          String[] parts = StringUtils.split( href, '/' );
          parts = (String[]) ArrayUtils.subarray( parts, 1, parts.length );
          if ( parts == null || parts.length == 0 )
          {
              return "/";
         }
 
         String joinedString = StringUtils.join( parts, '/' );
         if ( href.endsWith( "/" ) )
         {
             joinedString = joinedString + "/";
         }
 
         return joinedString;
     }
 }