| /* |
| * Copyright (c) 2001, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 4422263 |
| * @summary Checks that ImageInputStream.readFully(type[], int int) handles sign |
| * extension and byte ordering correctly |
| */ |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.InputStream; |
| import java.nio.ByteOrder; |
| |
| import javax.imageio.stream.ImageInputStream; |
| import javax.imageio.stream.MemoryCacheImageInputStream; |
| |
| public class ReadFullyTest { |
| |
| static final ByteOrder bigEndian = ByteOrder.BIG_ENDIAN; |
| static final ByteOrder littleEndian = ByteOrder.LITTLE_ENDIAN; |
| |
| private static void expect(long e, long g) { |
| if (e != g) { |
| throw new RuntimeException("Expected " + e + ", got " + g); |
| } |
| } |
| |
| public static void main (String args[]) { |
| try { |
| byte[] b = { |
| (byte)0x11, (byte)0x22, // low low |
| (byte)0x44, (byte)0x99, // low high |
| (byte)0xAA, (byte)0x33, // high low |
| (byte)0xBB, (byte)0xCC // high high |
| }; |
| InputStream in = new ByteArrayInputStream(b); |
| ImageInputStream iin = new MemoryCacheImageInputStream(in); |
| |
| short[] s = new short[b.length/2]; |
| char[] c = new char[b.length/2]; |
| int[] i = new int[b.length/4]; |
| long[] l = new long[b.length/8]; |
| float[] f = new float[b.length/4]; |
| double[] d = new double[b.length/8]; |
| |
| iin.seek(0L); |
| iin.setByteOrder(bigEndian); |
| iin.readFully(s, 0, s.length); |
| expect(s[0] & 0xffff, 0x1122); |
| expect(s[1] & 0xffff, 0x4499); |
| expect(s[2] & 0xffff, 0xAA33); |
| expect(s[3] & 0xffff, 0xBBCC); |
| |
| iin.seek(0L); |
| iin.setByteOrder(littleEndian); |
| iin.readFully(s, 0, s.length); |
| expect(s[0] & 0xffff, 0x2211); |
| expect(s[1] & 0xffff, 0x9944); |
| expect(s[2] & 0xffff, 0x33AA); |
| expect(s[3] & 0xffff, 0xCCBB); |
| |
| iin.seek(0L); |
| iin.setByteOrder(bigEndian); |
| iin.readFully(c, 0, c.length); |
| expect(c[0], 0x1122); |
| expect(c[1], 0x4499); |
| expect(c[2], 0xAA33); |
| expect(c[3], 0xBBCC); |
| |
| iin.seek(0L); |
| iin.setByteOrder(littleEndian); |
| iin.readFully(c, 0, c.length); |
| expect(c[0], 0x2211); |
| expect(c[1], 0x9944); |
| expect(c[2], 0x33AA); |
| expect(c[3], 0xCCBB); |
| |
| iin.seek(0L); |
| iin.setByteOrder(bigEndian); |
| iin.readFully(i, 0, i.length); |
| expect(i[0] & 0xffffffff, 0x11224499); |
| expect(i[1] & 0xffffffff, 0xAA33BBCC); |
| |
| iin.seek(0L); |
| iin.setByteOrder(littleEndian); |
| iin.readFully(i, 0, i.length); |
| expect(i[0] & 0xffffffff, 0x99442211); |
| expect(i[1] & 0xffffffff, 0xCCBB33AA); |
| |
| iin.seek(0L); |
| iin.setByteOrder(bigEndian); |
| iin.readFully(f, 0, f.length); |
| expect(Float.floatToIntBits(f[0]) & 0xffffffff, 0x11224499); |
| expect(Float.floatToIntBits(f[1]) & 0xffffffff, 0xAA33BBCC); |
| |
| iin.seek(0L); |
| iin.setByteOrder(littleEndian); |
| iin.readFully(f, 0, f.length); |
| expect(Float.floatToIntBits(f[0]) & 0xffffffff, 0x99442211); |
| expect(Float.floatToIntBits(f[1]) & 0xffffffff, 0xCCBB33AA); |
| |
| iin.seek(0L); |
| iin.setByteOrder(bigEndian); |
| iin.readFully(l, 0, l.length); |
| expect(l[0], 0x11224499AA33BBCCL); |
| |
| iin.seek(0L); |
| iin.setByteOrder(littleEndian); |
| iin.readFully(l, 0, l.length); |
| expect(l[0], 0xCCBB33AA99442211L); |
| |
| iin.seek(0L); |
| iin.setByteOrder(bigEndian); |
| iin.readFully(d, 0, d.length); |
| expect(Double.doubleToLongBits(d[0]), 0x11224499AA33BBCCL); |
| |
| iin.seek(0L); |
| iin.setByteOrder(littleEndian); |
| iin.readFully(d, 0, d.length); |
| expect(Double.doubleToLongBits(d[0]), 0xCCBB33AA99442211L); |
| } catch (Exception ex) { |
| throw new RuntimeException("Got exception " + ex); |
| } |
| } |
| } |