001    /* FileDataSource.java -- Data source for a File object.
002       Copyright (C) 2004 Free Software Foundation, Inc.
003    
004    This file is part of GNU Classpath.
005    
006    GNU Classpath is free software; you can redistribute it and/or modify
007    it under the terms of the GNU General Public License as published by
008    the Free Software Foundation; either version 2, or (at your option)
009    any later version.
010    
011    GNU Classpath is distributed in the hope that it will be useful, but
012    WITHOUT ANY WARRANTY; without even the implied warranty of
013    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014    General Public License for more details.
015    
016    You should have received a copy of the GNU General Public License
017    along with GNU Classpath; see the file COPYING.  If not, write to the
018    Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
019    02110-1301 USA.
020    
021    Linking this library statically or dynamically with other modules is
022    making a combined work based on this library.  Thus, the terms and
023    conditions of the GNU General Public License cover the whole
024    combination.
025    
026    As a special exception, the copyright holders of this library give you
027    permission to link this library with independent modules to produce an
028    executable, regardless of the license terms of these independent
029    modules, and to copy and distribute the resulting executable under
030    terms of your choice, provided that you also meet, for each linked
031    independent module, the terms and conditions of the license of that
032    module.  An independent module is a module which is not derived from
033    or based on this library.  If you modify this library, you may extend
034    this exception to your version of the library, but you are not
035    obligated to do so.  If you do not wish to do so, delete this
036    exception statement from your version. */
037    
038    package javax.activation;
039    
040    import java.io.File;
041    import java.io.FileInputStream;
042    import java.io.FileOutputStream;
043    import java.io.InputStream;
044    import java.io.IOException;
045    import 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     */
053    public 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