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/*
* Copyright (c) 2005, 2010, 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.*;
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;
}
}
}
}
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