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    1   /*
    2    * Licensed to the Apache Software Foundation (ASF) under one or more
    3    * contributor license agreements.  See the NOTICE file distributed with
    4    * this work for additional information regarding copyright ownership.
    5    * The ASF licenses this file to You under the Apache License, Version 2.0
    6    * (the "License"); you may not use this file except in compliance with
    7    * the License.  You may obtain a copy of the License at
    8    *
    9    *      http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   */
    17  package org.apache.commons.vfs.provider.local;
    18
    19  import org.apache.commons.vfs.FileName;
    20  import org.apache.commons.vfs.FileSystemException;
    21  import org.apache.commons.vfs.FileType;
    22
    23  /***
    24   * A general-purpose file name parser.
    25   *
    26   * @author <a href="mailto:adammurdoch@apache.org">Adam Murdoch</a>
    27   * @version $Revision: 480428 $ $Date: 2006-11-29 07:15:24 +0100 (Mi, 29 Nov 2006) $
    28   */
    29  public class GenericFileNameParser
    30      extends LocalFileNameParser
    31  {
    32      private static final GenericFileNameParser INSTANCE = new GenericFileNameParser();
    33
    34      /***
    35       * retrieve a instance to this parser
    36       *
    37       * @return the parser
    38       */
    39      public static GenericFileNameParser getInstance()
    40      {
    41          return INSTANCE;
    42      }
    43
    44      /***
    45       * Pops the root prefix off a URI, which has had the scheme removed.
    46       */
    47      protected String extractRootPrefix(final String uri,
    48                                         final StringBuffer name)
    49          throws FileSystemException
    50      {
    51          // TODO - this class isn't generic at all.  Need to fix this
    52
    53          // Looking for <sep>
    54          if (name.length() == 0 || name.charAt(0) != '/')
    55          {
    56              throw new FileSystemException("vfs.provider.local/not-absolute-file-name.error", uri);
    57          }
    58
    59          // do not strip the separator, BUT also return it ...
    60          return "/";
    61      }
    62
    63      /*
    64       * ... this is why whe need this:
    65       * here the rootFilename can only be "/" (see above) put this "/" is also in the pathname
    66       * so its of no value for the LocalFileName instance
    67       */
    68      protected FileName createFileName(String scheme, final String rootFile, final String path, final FileType type)
    69      {
    70          return new LocalFileName(scheme, "", path, type);
    71      }
    72  }