mirror of git://gcc.gnu.org/git/gcc.git
112 lines
3.5 KiB
Java
112 lines
3.5 KiB
Java
/* ByteArray.java -- wrapper around a byte array, with nice toString output.
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Copyright (C) 2005 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.java.security.util;
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import gnu.java.lang.CPStringBuilder;
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import java.io.PrintWriter;
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import java.io.StringWriter;
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public final class ByteArray
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{
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private final byte[] value;
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public ByteArray (final byte[] value)
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{
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this.value = value;
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}
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public byte[] getValue ()
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{
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return value;
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}
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public String toString ()
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{
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StringWriter str = new StringWriter ();
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PrintWriter out = new PrintWriter (str);
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int i = 0;
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int len = value.length;
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while (i < len)
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{
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out.print (formatInt (i, 16, 8));
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out.print (" ");
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int l = Math.min (16, len - i);
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String s = toHexString (value, i, l, ' ');
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out.print (s);
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for (int j = 56 - (56 - s.length ()); j < 56; j++)
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out.print (" ");
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for (int j = 0; j < l; j++)
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{
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byte b = value[i+j];
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if ((b & 0xFF) < 0x20 || (b & 0xFF) > 0x7E)
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out.print (".");
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else
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out.print ((char) (b & 0xFF));
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}
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out.println ();
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i += 16;
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}
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return str.toString ();
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}
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public static String toHexString (byte[] buf, int off, int len, char sep)
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{
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CPStringBuilder str = new CPStringBuilder();
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for (int i = 0; i < len; i++)
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{
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str.append (Character.forDigit (buf[i+off] >>> 4 & 0x0F, 16));
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str.append (Character.forDigit (buf[i+off] & 0x0F, 16));
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if (i < len - 1)
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str.append(sep);
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}
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return str.toString();
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}
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public static String formatInt (int value, int radix, int len)
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{
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String s = Integer.toString (value, radix);
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CPStringBuilder buf = new CPStringBuilder ();
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for (int j = 0; j < len - s.length(); j++)
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buf.append ("0");
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buf.append (s);
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return buf.toString();
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}
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}
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