001/* FileDataSource.java -- Data source for a File object.
002   Copyright (C) 2004 Free Software Foundation, Inc.
003
004This file is part of GNU Classpath.
005
006GNU Classpath is free software; you can redistribute it and/or modify
007it under the terms of the GNU General Public License as published by
008the Free Software Foundation; either version 2, or (at your option)
009any later version.
010
011GNU Classpath is distributed in the hope that it will be useful, but
012WITHOUT ANY WARRANTY; without even the implied warranty of
013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014General Public License for more details.
015
016You should have received a copy of the GNU General Public License
017along with GNU Classpath; see the file COPYING.  If not, write to the
018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
01902110-1301 USA.
020
021Linking this library statically or dynamically with other modules is
022making a combined work based on this library.  Thus, the terms and
023conditions of the GNU General Public License cover the whole
024combination.
025
026As a special exception, the copyright holders of this library give you
027permission to link this library with independent modules to produce an
028executable, regardless of the license terms of these independent
029modules, and to copy and distribute the resulting executable under
030terms of your choice, provided that you also meet, for each linked
031independent module, the terms and conditions of the license of that
032module.  An independent module is a module which is not derived from
033or based on this library.  If you modify this library, you may extend
034this exception to your version of the library, but you are not
035obligated to do so.  If you do not wish to do so, delete this
036exception statement from your version. */
037
038package javax.activation;
039
040import java.io.File;
041import java.io.FileInputStream;
042import java.io.FileOutputStream;
043import java.io.InputStream;
044import java.io.IOException;
045import java.io.OutputStream;
046
047/**
048 * Data source encapsulating a file.
049 *
050 * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
051 * @version 1.1
052 */
053public class FileDataSource
054  implements DataSource
055{
056
057  private final File file;
058  private FileTypeMap typeMap;
059  
060  /**
061   * Constructor.
062   * @param file the underlying file to use
063   */
064  public FileDataSource(File file)
065  {
066    this.file = file;
067  }
068  
069  /**
070   * Constructor.
071   * @param name the path to the underlying file to use
072   */
073  public FileDataSource(String name)
074  {
075    this(new File(name));
076  }
077  
078  public InputStream getInputStream()
079    throws IOException
080  {
081    return new FileInputStream(file);
082  }
083
084  public OutputStream getOutputStream()
085    throws IOException
086  {
087    return new FileOutputStream(file);
088  }
089  
090  public String getContentType()
091  {
092    if (typeMap == null)
093      {
094        FileTypeMap dftm = FileTypeMap.getDefaultFileTypeMap();
095        return dftm.getContentType(file);
096      }
097    return typeMap.getContentType(file);
098  }
099  
100  public String getName()
101  {
102    return file.getName();
103  }
104  
105  /**
106   * Returns the underlying file.
107   */
108  public File getFile()
109  {
110    return file;
111  }
112
113  /**
114   * Sets the file type map to use to determine the content type of the file.
115   * @param map the file type map
116   */
117  public void setFileTypeMap(FileTypeMap map)
118  {
119    typeMap = map;
120  }
121  
122}
123