194 lines
7.0 KiB
Java
194 lines
7.0 KiB
Java
/*
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* Copyright (c) 1997, 2007, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package com.sun.jmx.snmp;
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// java imports
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//
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import java.lang.Math;
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/**
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* Represents an SNMP String defined with a fixed length.
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* The class is mainly used when dealing with table indexes for which one of the keys
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* is defined as a <CODE>String</CODE>.
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*
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* <p><b>This API is a Sun Microsystems internal API and is subject
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* to change without notice.</b></p>
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*/
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public class SnmpStringFixed extends SnmpString {
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private static final long serialVersionUID = -9120939046874646063L;
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// CONSTRUCTORS
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//-------------
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/**
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* Constructs a new <CODE>SnmpStringFixed</CODE> from the specified bytes array.
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* @param v The bytes composing the fixed-string value.
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*/
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public SnmpStringFixed(byte[] v) {
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super(v) ;
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}
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/**
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* Constructs a new <CODE>SnmpStringFixed</CODE> with the specified <CODE>Bytes</CODE> array.
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* @param v The <CODE>Bytes</CODE> composing the fixed-string value.
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*/
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public SnmpStringFixed(Byte[] v) {
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super(v) ;
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}
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/**
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* Constructs a new <CODE>SnmpStringFixed</CODE> from the specified <CODE>String</CODE> value.
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* @param v The initialization value.
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*/
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public SnmpStringFixed(String v) {
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super(v) ;
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}
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/**
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* Constructs a new <CODE>SnmpStringFixed</CODE> from the specified <CODE>bytes</CODE> array
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* with the specified length.
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* @param l The length of the fixed-string.
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* @param v The <CODE>bytes</CODE> composing the fixed-string value.
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* @exception IllegalArgumentException Either the length or the <CODE>byte</CODE> array is not valid.
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*/
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public SnmpStringFixed(int l, byte[] v) throws IllegalArgumentException {
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if ((l <= 0) || (v == null)) {
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throw new IllegalArgumentException() ;
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}
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int length = Math.min(l, v.length);
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value = new byte[l] ;
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for (int i = 0 ; i < length ; i++) {
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value[i] = v[i] ;
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}
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for (int i = length ; i < l ; i++) {
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value[i] = 0 ;
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}
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}
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/**
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* Constructs a new <CODE>SnmpStringFixed</CODE> from the specified <CODE>Bytes</CODE> array
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* with the specified length.
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* @param l The length of the fixed-string.
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* @param v The <CODE>Bytes</CODE> composing the fixed-string value.
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* @exception IllegalArgumentException Either the length or the <CODE>Byte</CODE> array is not valid.
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*/
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public SnmpStringFixed(int l, Byte[] v) throws IllegalArgumentException {
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if ((l <= 0) || (v == null)) {
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throw new IllegalArgumentException() ;
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}
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int length = Math.min(l, v.length);
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value = new byte[l] ;
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for (int i = 0 ; i < length ; i++) {
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value[i] = v[i].byteValue() ;
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}
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for (int i = length ; i < l ; i++) {
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value[i] = 0 ;
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}
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}
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/**
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* Constructs a new <CODE>SnmpStringFixed</CODE> from the specified <CODE>String</CODE>
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* with the specified length.
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* @param l The length of the fixed-string.
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* @param s The <CODE>String</CODE> composing the fixed-string value.
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* @exception IllegalArgumentException Either the length or the <CODE>String</CODE> is not valid.
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*/
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public SnmpStringFixed(int l, String s) throws IllegalArgumentException {
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if ((l <= 0) || (s == null)) {
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throw new IllegalArgumentException() ;
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}
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byte[] v = s.getBytes();
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int length = Math.min(l, v.length);
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value = new byte[l] ;
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for (int i = 0 ; i < length ; i++) {
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value[i] = v[i] ;
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}
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for (int i = length ; i < l ; i++) {
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value[i] = 0 ;
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}
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}
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// PUBLIC METHODS
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//---------------
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/**
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* Extracts the fixed-string from an index OID and returns its
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* value converted as an <CODE>SnmpOid</CODE>.
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* @param l The number of successive array elements to be retreived
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* in order to construct the OID.
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* These elements are retreived starting at the <CODE>start</CODE> position.
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* @param index The index array.
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* @param start The position in the index array.
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* @return The OID representing the fixed-string value.
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* @exception SnmpStatusException There is no string value
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* available at the start position.
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*/
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public static SnmpOid toOid(int l, long[] index, int start) throws SnmpStatusException {
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try {
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long[] ids = new long[l] ;
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for (int i = 0 ; i < l ; i++) {
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ids[i] = index[start + i] ;
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}
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return new SnmpOid(ids) ;
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}
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catch(IndexOutOfBoundsException e) {
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throw new SnmpStatusException(SnmpStatusException.noSuchName) ;
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}
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}
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/**
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* Scans an index OID, skip the string value and returns the position
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* of the next value.
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* @param l The number of successive array elements to be passed
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* in order to get the position of the next value.
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* These elements are passed starting at the <CODE>start</CODE> position.
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* @param index The index array.
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* @param start The position in the index array.
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* @return The position of the next value.
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* @exception SnmpStatusException There is no string value
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* available at the start position.
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*/
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public static int nextOid(int l, long[] index, int start) throws SnmpStatusException {
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int result = start + l ;
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if (result > index.length) {
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throw new SnmpStatusException(SnmpStatusException.noSuchName) ;
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}
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return result ;
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}
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/**
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* Appends an <CODE>SnmpOid</CODE> representing an <CODE>SnmpStringFixed</CODE> to another OID.
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* @param l Unused.
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* @param source An OID representing an <CODE>SnmpStringFixed</CODE> value.
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* @param dest Where source should be appended.
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*/
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public static void appendToOid(int l, SnmpOid source, SnmpOid dest) {
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dest.append(source) ;
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}
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}
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