/*
* Copyright (c) 1997, 2007, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*
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package com.sun.jmx.snmp;
// java imports
//
import java.lang.Math;
/**
* Represents an SNMP String defined with a fixed length.
* The class is mainly used when dealing with table indexes for which one of the keys
* is defined as a <CODE>String</CODE>.
*
* <p><b>This API is a Sun Microsystems internal API and is subject
* to change without notice.</b></p>
*/
public class SnmpStringFixed extends SnmpString {
private static final long serialVersionUID = -9120939046874646063L;
// CONSTRUCTORS
//-------------
/**
* Constructs a new <CODE>SnmpStringFixed</CODE> from the specified bytes array.
* @param v The bytes composing the fixed-string value.
*/
public SnmpStringFixed(byte[] v) {
super(v) ;
}
/**
* Constructs a new <CODE>SnmpStringFixed</CODE> with the specified <CODE>Bytes</CODE> array.
* @param v The <CODE>Bytes</CODE> composing the fixed-string value.
*/
public SnmpStringFixed(Byte[] v) {
super(v) ;
}
/**
* Constructs a new <CODE>SnmpStringFixed</CODE> from the specified <CODE>String</CODE> value.
* @param v The initialization value.
*/
public SnmpStringFixed(String v) {
super(v) ;
}
/**
* Constructs a new <CODE>SnmpStringFixed</CODE> from the specified <CODE>bytes</CODE> array
* with the specified length.
* @param l The length of the fixed-string.
* @param v The <CODE>bytes</CODE> composing the fixed-string value.
* @exception IllegalArgumentException Either the length or the <CODE>byte</CODE> array is not valid.
*/
public SnmpStringFixed(int l, byte[] v) throws IllegalArgumentException {
if ((l <= 0) || (v == null)) {
throw new IllegalArgumentException() ;
}
int length = Math.min(l, v.length);
value = new byte[l] ;
for (int i = 0 ; i < length ; i++) {
value[i] = v[i] ;
}
for (int i = length ; i < l ; i++) {
value[i] = 0 ;
}
}
/**
* Constructs a new <CODE>SnmpStringFixed</CODE> from the specified <CODE>Bytes</CODE> array
* with the specified length.
* @param l The length of the fixed-string.
* @param v The <CODE>Bytes</CODE> composing the fixed-string value.
* @exception IllegalArgumentException Either the length or the <CODE>Byte</CODE> array is not valid.
*/
public SnmpStringFixed(int l, Byte[] v) throws IllegalArgumentException {
if ((l <= 0) || (v == null)) {
throw new IllegalArgumentException() ;
}
int length = Math.min(l, v.length);
value = new byte[l] ;
for (int i = 0 ; i < length ; i++) {
value[i] = v[i].byteValue() ;
}
for (int i = length ; i < l ; i++) {
value[i] = 0 ;
}
}
/**
* Constructs a new <CODE>SnmpStringFixed</CODE> from the specified <CODE>String</CODE>
* with the specified length.
* @param l The length of the fixed-string.
* @param s The <CODE>String</CODE> composing the fixed-string value.
* @exception IllegalArgumentException Either the length or the <CODE>String</CODE> is not valid.
*/
public SnmpStringFixed(int l, String s) throws IllegalArgumentException {
if ((l <= 0) || (s == null)) {
throw new IllegalArgumentException() ;
}
byte[] v = s.getBytes();
int length = Math.min(l, v.length);
value = new byte[l] ;
for (int i = 0 ; i < length ; i++) {
value[i] = v[i] ;
}
for (int i = length ; i < l ; i++) {
value[i] = 0 ;
}
}
// PUBLIC METHODS
//---------------
/**
* Extracts the fixed-string from an index OID and returns its
* value converted as an <CODE>SnmpOid</CODE>.
* @param l The number of successive array elements to be retreived
* in order to construct the OID.
* These elements are retreived starting at the <CODE>start</CODE> position.
* @param index The index array.
* @param start The position in the index array.
* @return The OID representing the fixed-string value.
* @exception SnmpStatusException There is no string value
* available at the start position.
*/
public static SnmpOid toOid(int l, long[] index, int start) throws SnmpStatusException {
try {
long[] ids = new long[l] ;
for (int i = 0 ; i < l ; i++) {
ids[i] = index[start + i] ;
}
return new SnmpOid(ids) ;
}
catch(IndexOutOfBoundsException e) {
throw new SnmpStatusException(SnmpStatusException.noSuchName) ;
}
}
/**
* Scans an index OID, skip the string value and returns the position
* of the next value.
* @param l The number of successive array elements to be passed
* in order to get the position of the next value.
* These elements are passed starting at the <CODE>start</CODE> position.
* @param index The index array.
* @param start The position in the index array.
* @return The position of the next value.
* @exception SnmpStatusException There is no string value
* available at the start position.
*/
public static int nextOid(int l, long[] index, int start) throws SnmpStatusException {
int result = start + l ;
if (result > index.length) {
throw new SnmpStatusException(SnmpStatusException.noSuchName) ;
}
return result ;
}
/**
* Appends an <CODE>SnmpOid</CODE> representing an <CODE>SnmpStringFixed</CODE> to another OID.
* @param l Unused.
* @param source An OID representing an <CODE>SnmpStringFixed</CODE> value.
* @param dest Where source should be appended.
*/
public static void appendToOid(int l, SnmpOid source, SnmpOid dest) {
dest.append(source) ;
}
}