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| 1 | /* | ||
| 2 | * Copyright (c) 1997, 2007, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | |||
| 27 | package com.sun.jmx.snmp; | ||
| 28 | |||
| 29 | |||
| 30 | |||
| 31 | // java imports | ||
| 32 | // | ||
| 33 | import java.lang.Math; | ||
| 34 | |||
| 35 | /** | ||
| 36 | * Represents an SNMP String defined with a fixed length. | ||
| 37 | * The class is mainly used when dealing with table indexes for which one of the keys | ||
| 38 | * is defined as a <CODE>String</CODE>. | ||
| 39 | * | ||
| 40 | * <p><b>This API is a Sun Microsystems internal API and is subject | ||
| 41 | * to change without notice.</b></p> | ||
| 42 | */ | ||
| 43 | |||
| 44 | public class SnmpStringFixed extends SnmpString { | ||
| 45 | private static final long serialVersionUID = -9120939046874646063L; | ||
| 46 | |||
| 47 | // CONSTRUCTORS | ||
| 48 | //------------- | ||
| 49 | /** | ||
| 50 | * Constructs a new <CODE>SnmpStringFixed</CODE> from the specified bytes array. | ||
| 51 | * @param v The bytes composing the fixed-string value. | ||
| 52 | */ | ||
| 53 | public SnmpStringFixed(byte[] v) { | ||
| 54 | super(v) ; | ||
| 55 | } | ||
| 56 | |||
| 57 | /** | ||
| 58 | * Constructs a new <CODE>SnmpStringFixed</CODE> with the specified <CODE>Bytes</CODE> array. | ||
| 59 | * @param v The <CODE>Bytes</CODE> composing the fixed-string value. | ||
| 60 | */ | ||
| 61 | public SnmpStringFixed(Byte[] v) { | ||
| 62 | super(v) ; | ||
| 63 | } | ||
| 64 | |||
| 65 | /** | ||
| 66 | * Constructs a new <CODE>SnmpStringFixed</CODE> from the specified <CODE>String</CODE> value. | ||
| 67 | * @param v The initialization value. | ||
| 68 | */ | ||
| 69 | public SnmpStringFixed(String v) { | ||
| 70 | super(v) ; | ||
| 71 | } | ||
| 72 | |||
| 73 | /** | ||
| 74 | * Constructs a new <CODE>SnmpStringFixed</CODE> from the specified <CODE>bytes</CODE> array | ||
| 75 | * with the specified length. | ||
| 76 | * @param l The length of the fixed-string. | ||
| 77 | * @param v The <CODE>bytes</CODE> composing the fixed-string value. | ||
| 78 | * @exception IllegalArgumentException Either the length or the <CODE>byte</CODE> array is not valid. | ||
| 79 | */ | ||
| 80 | public SnmpStringFixed(int l, byte[] v) throws IllegalArgumentException { | ||
| 81 | if ((l <= 0) || (v == null)) { | ||
| 82 | throw new IllegalArgumentException() ; | ||
| 83 | } | ||
| 84 | int length = Math.min(l, v.length); | ||
| 85 | value = new byte[l] ; | ||
| 86 | for (int i = 0 ; i < length ; i++) { | ||
| 87 | value[i] = v[i] ; | ||
| 88 | } | ||
| 89 | for (int i = length ; i < l ; i++) { | ||
| 90 | value[i] = 0 ; | ||
| 91 | } | ||
| 92 | } | ||
| 93 | |||
| 94 | /** | ||
| 95 | * Constructs a new <CODE>SnmpStringFixed</CODE> from the specified <CODE>Bytes</CODE> array | ||
| 96 | * with the specified length. | ||
| 97 | * @param l The length of the fixed-string. | ||
| 98 | * @param v The <CODE>Bytes</CODE> composing the fixed-string value. | ||
| 99 | * @exception IllegalArgumentException Either the length or the <CODE>Byte</CODE> array is not valid. | ||
| 100 | */ | ||
| 101 | public SnmpStringFixed(int l, Byte[] v) throws IllegalArgumentException { | ||
| 102 | if ((l <= 0) || (v == null)) { | ||
| 103 | throw new IllegalArgumentException() ; | ||
| 104 | } | ||
| 105 | int length = Math.min(l, v.length); | ||
| 106 | value = new byte[l] ; | ||
| 107 | for (int i = 0 ; i < length ; i++) { | ||
| 108 | value[i] = v[i].byteValue() ; | ||
| 109 | } | ||
| 110 | for (int i = length ; i < l ; i++) { | ||
| 111 | value[i] = 0 ; | ||
| 112 | } | ||
| 113 | } | ||
| 114 | |||
| 115 | /** | ||
| 116 | * Constructs a new <CODE>SnmpStringFixed</CODE> from the specified <CODE>String</CODE> | ||
| 117 | * with the specified length. | ||
| 118 | * @param l The length of the fixed-string. | ||
| 119 | * @param s The <CODE>String</CODE> composing the fixed-string value. | ||
| 120 | * @exception IllegalArgumentException Either the length or the <CODE>String</CODE> is not valid. | ||
| 121 | */ | ||
| 122 | public SnmpStringFixed(int l, String s) throws IllegalArgumentException { | ||
| 123 | if ((l <= 0) || (s == null)) { | ||
| 124 | throw new IllegalArgumentException() ; | ||
| 125 | } | ||
| 126 | byte[] v = s.getBytes(); | ||
| 127 | int length = Math.min(l, v.length); | ||
| 128 | value = new byte[l] ; | ||
| 129 | for (int i = 0 ; i < length ; i++) { | ||
| 130 | value[i] = v[i] ; | ||
| 131 | } | ||
| 132 | for (int i = length ; i < l ; i++) { | ||
| 133 | value[i] = 0 ; | ||
| 134 | } | ||
| 135 | } | ||
| 136 | |||
| 137 | // PUBLIC METHODS | ||
| 138 | //--------------- | ||
| 139 | /** | ||
| 140 | * Extracts the fixed-string from an index OID and returns its | ||
| 141 | * value converted as an <CODE>SnmpOid</CODE>. | ||
| 142 | * @param l The number of successive array elements to be retreived | ||
| 143 | * in order to construct the OID. | ||
| 144 | * These elements are retreived starting at the <CODE>start</CODE> position. | ||
| 145 | * @param index The index array. | ||
| 146 | * @param start The position in the index array. | ||
| 147 | * @return The OID representing the fixed-string value. | ||
| 148 | * @exception SnmpStatusException There is no string value | ||
| 149 | * available at the start position. | ||
| 150 | */ | ||
| 151 | public static SnmpOid toOid(int l, long[] index, int start) throws SnmpStatusException { | ||
| 152 | try { | ||
| 153 | long[] ids = new long[l] ; | ||
| 154 | for (int i = 0 ; i < l ; i++) { | ||
| 155 | ids[i] = index[start + i] ; | ||
| 156 | } | ||
| 157 | return new SnmpOid(ids) ; | ||
| 158 | } | ||
| 159 | catch(IndexOutOfBoundsException e) { | ||
| 160 | throw new SnmpStatusException(SnmpStatusException.noSuchName) ; | ||
| 161 | } | ||
| 162 | } | ||
| 163 | |||
| 164 | /** | ||
| 165 | * Scans an index OID, skip the string value and returns the position | ||
| 166 | * of the next value. | ||
| 167 | * @param l The number of successive array elements to be passed | ||
| 168 | * in order to get the position of the next value. | ||
| 169 | * These elements are passed starting at the <CODE>start</CODE> position. | ||
| 170 | * @param index The index array. | ||
| 171 | * @param start The position in the index array. | ||
| 172 | * @return The position of the next value. | ||
| 173 | * @exception SnmpStatusException There is no string value | ||
| 174 | * available at the start position. | ||
| 175 | */ | ||
| 176 | public static int nextOid(int l, long[] index, int start) throws SnmpStatusException { | ||
| 177 | int result = start + l ; | ||
| 178 | if (result > index.length) { | ||
| 179 | throw new SnmpStatusException(SnmpStatusException.noSuchName) ; | ||
| 180 | } | ||
| 181 | return result ; | ||
| 182 | } | ||
| 183 | |||
| 184 | /** | ||
| 185 | * Appends an <CODE>SnmpOid</CODE> representing an <CODE>SnmpStringFixed</CODE> to another OID. | ||
| 186 | * @param l Unused. | ||
| 187 | * @param source An OID representing an <CODE>SnmpStringFixed</CODE> value. | ||
| 188 | * @param dest Where source should be appended. | ||
| 189 | */ | ||
| 190 | public static void appendToOid(int l, SnmpOid source, SnmpOid dest) { | ||
| 191 | dest.append(source) ; | ||
| 192 | } | ||
| 193 | } | ||