/*
* 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] & 0 xff;
if (i != 0 ) {
sb.append(':' );
}
sb.append(hexDigits[k >>> 4 ]);
sb.append(hexDigits[k & 0 xf]);
}
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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