| /* |
| * Copyright (c) 1997, 2016, 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. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * 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. |
| */ |
| |
| |
| /* |
| * The Original Code is HAT. The Initial Developer of the |
| * Original Code is Bill Foote, with contributions from others |
| * at JavaSoft/Sun. |
| */ |
| |
| package jdk.test.lib.hprof.parser; |
| |
| import java.io.FilterInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| /** |
| * InputStream that keeps track of total bytes read (in effect |
| * 'position' in stream) from the input stream. |
| * |
| */ |
| public class PositionInputStream extends FilterInputStream { |
| private long position = 0L; |
| |
| public PositionInputStream(InputStream in) { |
| super(in); |
| } |
| |
| public int read() throws IOException { |
| int res = super.read(); |
| if (res != -1) position++; |
| return res; |
| } |
| |
| public int read(byte[] b, int off, int len) throws IOException { |
| int res = super.read(b, off, len); |
| if (res != -1) position += res; |
| return res; |
| } |
| |
| public long skip(long n) throws IOException { |
| long res = super.skip(n); |
| position += res; |
| return res; |
| } |
| |
| public boolean markSupported() { |
| return false; |
| } |
| |
| public void mark(int readLimit) { |
| throw new UnsupportedOperationException("mark"); |
| } |
| |
| public void reset() { |
| throw new UnsupportedOperationException("reset"); |
| } |
| |
| public long position() { |
| return position; |
| } |
| } |