1 /*
2  * Copyright (c) 1995, 1996, Oracle and/or its affiliates. All rights reserved.
3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
5  * This code is free software; you can redistribute it and/or modify it
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7  * published by the Free Software Foundation.  Oracle designates this
8  * particular file as subject to the "Classpath" exception as provided
9  * by Oracle in the LICENSE file that accompanied this code.
10  *
11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
16  *
17  * You should have received a copy of the GNU General Public License version
18  * 2 along with this work; if not, write to the Free Software Foundation,
19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20  *
21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22  * or visit www.oracle.com if you need additional information or have any
23  * questions.
24  */
25 
26 package sun.awt.image;
27 
28 import java.io.InputStream;
29 import java.io.FileInputStream;
30 import java.io.BufferedInputStream;
31 import java.io.FileNotFoundException;
32 
33 public class FileImageSource extends InputStreamImageSource {
34     String imagefile;
35 
FileImageSource(String filename)36     public FileImageSource(String filename) {
37         SecurityManager security = System.getSecurityManager();
38         if (security != null) {
39             security.checkRead(filename);
40         }
41         imagefile = filename;
42     }
43 
checkSecurity(Object context, boolean quiet)44     final boolean checkSecurity(Object context, boolean quiet) {
45         // File based images only ever need to be checked statically
46         // when the image is retrieved from the cache.
47         return true;
48     }
49 
getDecoder()50     protected ImageDecoder getDecoder() {
51         if (imagefile == null) {
52             return null;
53         }
54 
55         InputStream is;
56         try {
57             is = new BufferedInputStream(new FileInputStream(imagefile));
58         } catch (FileNotFoundException e) {
59             return null;
60         }
61         // Don't believe the file suffix - many users don't know what
62         // kind of image they have and guess wrong...
63         /*
64         int suffixpos = imagefile.lastIndexOf('.');
65         if (suffixpos >= 0) {
66             String suffix = imagefile.substring(suffixpos+1).toLowerCase();
67             if (suffix.equals("gif")) {
68                 return new GifImageDecoder(this, is);
69             } else if (suffix.equals("jpeg") || suffix.equals("jpg") ||
70                        suffix.equals("jpe") || suffix.equals("jfif")) {
71                 return new JPEGImageDecoder(this, is);
72             } else if (suffix.equals("xbm")) {
73                 return new XbmImageDecoder(this, is);
74             }
75         }
76         */
77         return getDecoder(is);
78     }
79 }
80