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 }