| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| package org.apache.directory.mitosis.util; |
| |
| |
| /** |
| * A utuility class that converts an integer to an octet string, and vice |
| * versa. |
| * |
| * @author The Apache Directory Project (dev@directory.apache.org) |
| * @version $Rev: 118 $, $Date: 2006-09-18 13:48:47Z $ |
| */ |
| public class OctetString |
| { |
| private static final char[] highDigits; |
| private static final char[] lowDigits; |
| |
| static |
| { |
| final char[] digits = |
| { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' }; |
| |
| int i; |
| char[] high = new char[256]; |
| char[] low = new char[256]; |
| |
| for ( i = 0; i < 256; i++ ) |
| { |
| high[i] = digits[i >>> 4]; |
| low[i] = digits[i & 0x0F]; |
| } |
| |
| highDigits = high; |
| lowDigits = low; |
| } |
| |
| |
| /** |
| * Converts the specified <tt>value</tt> to an octet string and appends |
| * it to the specified <tt>destination</tt>. |
| */ |
| public static void append( StringBuffer destination, long value ) |
| { |
| int v; |
| v = ( int ) ( value >>> 56 ); |
| destination.append( highDigits[v] ); |
| destination.append( lowDigits[v] ); |
| |
| v = ( int ) ( value >>> 48 ) & 0xff; |
| destination.append( highDigits[v] ); |
| destination.append( lowDigits[v] ); |
| |
| v = ( int ) ( value >>> 40 ) & 0xff; |
| destination.append( highDigits[v] ); |
| destination.append( lowDigits[v] ); |
| |
| v = ( int ) ( value >>> 32 ) & 0xff; |
| destination.append( highDigits[v] ); |
| destination.append( lowDigits[v] ); |
| |
| v = ( int ) ( value >>> 24 ) & 0xff; |
| destination.append( highDigits[v] ); |
| destination.append( lowDigits[v] ); |
| |
| v = ( int ) ( value >>> 16 ) & 0xff; |
| destination.append( highDigits[v] ); |
| destination.append( lowDigits[v] ); |
| |
| v = ( int ) ( value >>> 8 ) & 0xff; |
| destination.append( highDigits[v] ); |
| destination.append( lowDigits[v] ); |
| |
| v = ( int ) value & 0xff; |
| destination.append( highDigits[v] ); |
| destination.append( lowDigits[v] ); |
| } |
| |
| |
| /** |
| * Converts the specified <tt>value</tt> to an octet string and appends |
| * it to the specified <tt>destination</tt>. |
| */ |
| public static void append( StringBuffer destination, int value ) |
| { |
| int v; |
| v = ( value >>> 24 ) & 0xff; |
| destination.append( highDigits[v] ); |
| destination.append( lowDigits[v] ); |
| |
| v = ( value >>> 16 ) & 0xff; |
| destination.append( highDigits[v] ); |
| destination.append( lowDigits[v] ); |
| |
| v = ( value >>> 8 ) & 0xff; |
| destination.append( highDigits[v] ); |
| destination.append( lowDigits[v] ); |
| |
| v = value & 0xff; |
| destination.append( highDigits[v] ); |
| destination.append( lowDigits[v] ); |
| } |
| |
| /** |
| * Converts the specified binary data into an octet string and returns it. |
| */ |
| public static String toString( byte[] src ) |
| { |
| final int end = src.length; |
| StringBuffer dst = new StringBuffer( src.length << 1 ); |
| for ( int i = 0; i < end; i++ ) |
| { |
| dst.append( highDigits[src[i] & 0xff] ); |
| dst.append( lowDigits[src[i] & 0xff] ); |
| } |
| |
| return dst.toString(); |
| } |
| |
| /** |
| * Converts the specified value into an octet string and returns it. |
| */ |
| public static String toString( long value ) |
| { |
| StringBuffer dst = new StringBuffer( 16 ); |
| append( dst, value ); |
| return dst.toString(); |
| } |
| |
| /** |
| * Converts the specified value into an octet string and returns it. |
| */ |
| public static String toString( int value ) |
| { |
| StringBuffer dst = new StringBuffer( 8 ); |
| append( dst, value ); |
| return dst.toString(); |
| } |
| |
| /** |
| * Converts the specified octet string value into an integer and returns |
| * it. |
| */ |
| public static int parseInt( String value ) |
| { |
| return Integer.parseInt( value, 16 ); |
| } |
| |
| /** |
| * Converts the specified octet string value into a long integer and |
| * returns it. |
| */ |
| public static long parseLong( String value ) |
| { |
| return Long.parseLong( value, 16 ); |
| } |
| |
| |
| private OctetString() |
| { |
| } |
| } |