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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.http;
    18
    19  import org.apache.commons.httpclient.Header;
    20  import org.apache.commons.httpclient.HeaderElement;
    21  import org.apache.commons.httpclient.HttpException;
    22  import org.apache.commons.vfs.FileContent;
    23  import org.apache.commons.vfs.FileContentInfo;
    24  import org.apache.commons.vfs.FileContentInfoFactory;
    25  import org.apache.commons.vfs.FileSystemException;
    26  import org.apache.commons.vfs.impl.DefaultFileContentInfo;
    27
    28  /***
    29   * Description
    30   *
    31   * @author <a href="mailto:imario@apache.org">Mario Ivankovits</a>
    32   * @version $Revision: 480428 $ $Date: 2006-11-29 07:15:24 +0100 (Mi, 29 Nov 2006) $
    33   */
    34  public class HttpFileContentInfoFactory implements FileContentInfoFactory
    35  {
    36      public FileContentInfo create(FileContent fileContent) throws FileSystemException
    37      {
    38          HttpFileObject httpFile = (HttpFileObject) fileContent.getFile();
    39
    40          String contentType = null;
    41          String contentEncoding = null;
    42
    43          Header header = httpFile.getHeadMethod().getResponseHeader("content-type");
    44          if (header != null)
    45          {
    46              HeaderElement[] element;
    47              try
    48              {
    49                  element = header.getValues();
    50              }
    51              catch (HttpException e)
    52              {
    53                  throw new FileSystemException(e);
    54              }
    55              if (element != null && element.length > 0)
    56              {
    57                  contentType = element[0].getName();
    58              }
    59          }
    60
    61          contentEncoding = httpFile.getHeadMethod().getResponseCharSet();
    62
    63          return new DefaultFileContentInfo(contentType, contentEncoding);
    64      }
    65  }