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