| /* |
| * Copyright 2005-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| */ |
| |
| import java.io.*; |
| import java.util.*; |
| |
| class Utils { |
| |
| static final String BASE = System.getProperty("test.src", "."); |
| |
| private final static char[] hexDigits = "0123456789abcdef".toCharArray(); |
| |
| public static String toString(byte[] b) { |
| if (b == null) { |
| return "(null)"; |
| } |
| StringBuffer sb = new StringBuffer(b.length * 3); |
| for (int i = 0; i < b.length; i++) { |
| int k = b[i] & 0xff; |
| if (i != 0) { |
| sb.append(':'); |
| } |
| sb.append(hexDigits[k >>> 4]); |
| sb.append(hexDigits[k & 0xf]); |
| } |
| return sb.toString(); |
| } |
| |
| public static byte[] parse(String s) { |
| if (s.equals("(null)")) { |
| return null; |
| } |
| try { |
| int n = s.length(); |
| ByteArrayOutputStream out = new ByteArrayOutputStream(n / 3); |
| StringReader r = new StringReader(s); |
| while (true) { |
| int b1 = nextNibble(r); |
| if (b1 < 0) { |
| break; |
| } |
| int b2 = nextNibble(r); |
| if (b2 < 0) { |
| throw new RuntimeException("Invalid string " + s); |
| } |
| int b = (b1 << 4) | b2; |
| out.write(b); |
| } |
| return out.toByteArray(); |
| } catch (IOException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| private static int nextNibble(StringReader r) throws IOException { |
| while (true) { |
| int ch = r.read(); |
| if (ch == -1) { |
| return -1; |
| } else if ((ch >= '0') && (ch <= '9')) { |
| return ch - '0'; |
| } else if ((ch >= 'a') && (ch <= 'f')) { |
| return ch - 'a' + 10; |
| } else if ((ch >= 'A') && (ch <= 'F')) { |
| return ch - 'A' + 10; |
| } |
| } |
| } |
| |
| } |