1/* 2 * Copyright (c) 2001, 2017, 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 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24/* 25 * @test 26 * @bug 4420318 8183341 27 * @summary Checks that an IllegalStateException is thrown by getNumImages(true) 28 * when seekForwardOnly is true 29 * @modules java.desktop/com.sun.imageio.plugins.gif 30 * java.desktop/com.sun.imageio.plugins.jpeg 31 * java.desktop/com.sun.imageio.plugins.png 32 */ 33 34import java.io.File; 35import java.io.IOException; 36import java.nio.file.Files; 37 38import javax.imageio.ImageIO; 39import javax.imageio.ImageReader; 40import javax.imageio.stream.ImageInputStream; 41 42import com.sun.imageio.plugins.gif.GIFImageReader; 43import com.sun.imageio.plugins.jpeg.JPEGImageReader; 44import com.sun.imageio.plugins.png.PNGImageReader; 45 46public class AllowSearch { 47 private static void test(ImageReader reader, String format) 48 throws IOException { 49 boolean gotISE = false; 50 File f = null; 51 ImageInputStream stream = null; 52 try { 53 f = File.createTempFile("imageio", ".tmp"); 54 stream = ImageIO.createImageInputStream(f); 55 reader.setInput(stream, true); 56 57 try { 58 int numImages = reader.getNumImages(true); 59 } catch (IOException ioe) { 60 gotISE = false; 61 } catch (IllegalStateException ise) { 62 gotISE = true; 63 } 64 } finally { 65 if (stream != null) { 66 stream.close(); 67 } 68 69 reader.dispose(); 70 71 if (f != null) { 72 Files.delete(f.toPath()); 73 } 74 } 75 76 if (!gotISE) { 77 throw new RuntimeException("Failed to get desired exception for " + 78 format + " reader!"); 79 } 80 } 81 82 public static void main(String[] args) throws IOException { 83 ImageReader gifReader = new GIFImageReader(null); 84 ImageReader jpegReader = new JPEGImageReader(null); 85 ImageReader pngReader = new PNGImageReader(null); 86 87 test(gifReader, "GIF"); 88 test(jpegReader, "JPEG"); 89 test(pngReader, "PNG"); 90 } 91} 92