1 /* 2 * Copyright (c) 2005, 2010, 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 import java.io.*; 25 26 class Utils { 27 28 static final String BASE = System.getProperty("test.src", "."); 29 30 private final static char[] hexDigits = "0123456789abcdef".toCharArray(); 31 32 public static String toString(byte[] b) { 33 if (b == null) { 34 return "(null)"; 35 } 36 StringBuffer sb = new StringBuffer(b.length * 3); 37 for (int i = 0; i < b.length; i++) { 38 int k = b[i] & 0xff; 39 if (i != 0) { 40 sb.append(':'); 41 } 42 sb.append(hexDigits[k >>> 4]); 43 sb.append(hexDigits[k & 0xf]); 44 } 45 return sb.toString(); 46 } 47 48 public static byte[] parse(String s) { 49 if (s.equals("(null)")) { 50 return null; 51 } 52 try { 53 int n = s.length(); 54 ByteArrayOutputStream out = new ByteArrayOutputStream(n / 3); 55 StringReader r = new StringReader(s); 56 while (true) { 57 int b1 = nextNibble(r); 58 if (b1 < 0) { 59 break; 60 } 61 int b2 = nextNibble(r); 62 if (b2 < 0) { 63 throw new RuntimeException("Invalid string " + s); 64 } 65 int b = (b1 << 4) | b2; 66 out.write(b); 67 } 68 return out.toByteArray(); 69 } catch (IOException e) { 70 throw new RuntimeException(e); 71 } 72 } 73 74 private static int nextNibble(StringReader r) throws IOException { 75 while (true) { 76 int ch = r.read(); 77 if (ch == -1) { 78 return -1; 79 } else if ((ch >= '0') && (ch <= '9')) { 80 return ch - '0'; 81 } else if ((ch >= 'a') && (ch <= 'f')) { 82 return ch - 'a' + 10; 83 } else if ((ch >= 'A') && (ch <= 'F')) { 84 return ch - 'A' + 10; 85 } 86 } 87 } 88 89 }