| /* |
| * Copyright (c) 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. |
| * |
| * 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. |
| */ |
| |
| import java.io.BufferedReader; |
| import java.io.ByteArrayInputStream; |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * HexDumpReader provides utility methods to read a hex dump text file |
| * and convert to an InputStream. The format supported by the methods |
| * can be generated by the following command. |
| * |
| * $ od -vw -t x1 foo | sed -r -e 's/^[0-9]+ ?//' -e 's/ //g' -e '/^$/d' |
| */ |
| public class HexDumpReader { |
| public static InputStream getStreamFromHexDump(String fileName) { |
| return getStreamFromHexDump(new File(System.getProperty("test.src", "."), |
| fileName)); |
| } |
| |
| public static InputStream getStreamFromHexDump(File hexFile) { |
| ByteArrayBuilder bab = new ByteArrayBuilder(); |
| int lineNo = 0; |
| try (BufferedReader reader |
| = new BufferedReader(new InputStreamReader(new FileInputStream(hexFile), |
| "us-ascii"))) { |
| String line; |
| while ((line = reader.readLine()) != null) { |
| lineNo++; |
| line = line.trim(); |
| // Skip blank and comment lines. |
| if (line.length() == 0) { |
| continue; |
| } |
| int x = line.indexOf('#'); |
| if (x == 0) { |
| continue; |
| } |
| if (x > 0) { |
| line = line.substring(0, x).trim(); |
| } |
| int len = line.length(); |
| for (int i = 0; i < len; i += 2) { |
| bab.put((byte)Integer.parseInt(line, i, i + 2, 16)); |
| } |
| } |
| } catch (Exception e) { |
| throw new RuntimeException(hexFile.getName() + ":error:" + lineNo + ": " + e, e); |
| } |
| return new ByteArrayInputStream(bab.toArray()); |
| } |
| |
| |
| private static class ByteArrayBuilder { |
| private static final int BUFFER_SIZE = 4096; |
| |
| private int size; |
| private List<byte[]> bytes; |
| private byte[] current; |
| private int offset; |
| |
| ByteArrayBuilder() { |
| bytes = new ArrayList<>(); |
| current = new byte[BUFFER_SIZE]; |
| } |
| |
| void put(byte b) { |
| if (offset == BUFFER_SIZE) { |
| bytes.add(current); |
| current = new byte[BUFFER_SIZE]; |
| offset = 0; |
| } |
| current[offset++] = b; |
| size++; |
| } |
| |
| byte[] toArray() { |
| byte[] buf = new byte[size]; |
| int ptr = 0; |
| for (byte[] ba : bytes) { |
| System.arraycopy(ba, 0, buf, ptr, ba.length); |
| ptr += ba.length; |
| } |
| System.arraycopy(current, 0, buf, ptr, offset); |
| assert ptr + offset == size; |
| return buf; |
| } |
| } |
| |
| } |