/*
* @(#)file SnmpString.java
* @(#)author Sun Microsystems, Inc.
* @(#)version 4.15
* @(#)date 05/08/26
*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*
*/
package com.sun.jmx.snmp;
import java.net.InetAddress;
import java.net.UnknownHostException;
/**
* Represents an SNMP string.
*
* <p><b>This API is a Sun Microsystems internal API and is subject
* to change without notice.</b></p>
* @version 4.15 12/19/03
* @author Sun Microsystems, Inc
*/
public class SnmpString extends SnmpValue {
// CONSTRUCTORS
//-------------
/**
* Constructs a new empty <CODE>SnmpString</CODE>.
*/
public SnmpString() {
value = new byte[0] ;
}
/**
* Constructs a new <CODE>SnmpString</CODE> from the specified bytes array.
* @param v The bytes composing the string value.
*/
public SnmpString(byte[] v) {
value = (byte[])v.clone() ;
}
/**
* Constructs a new <CODE>SnmpString</CODE> from the specified <CODE>Bytes</CODE> array.
* @param v The <CODE>Bytes</CODE> composing the string value.
*/
public SnmpString(Byte[] v) {
value = new byte[v.length] ;
for (int i = 0 ; i < v.length ; i++) {
value[i] = v[i].byteValue() ;
}
}
/**
* Constructs a new <CODE>SnmpString</CODE> from the specified <CODE>String</CODE> value.
* @param v The initialization value.
*/
public SnmpString(String v) {
value = v.getBytes() ;
}
/**
* Constructs a new <CODE>SnmpString</CODE> from the specified <CODE> InetAddress </Code>.
* @param address The <CODE>InetAddress </CODE>.
*
* @since 1.5
*/
public SnmpString(InetAddress address) {
value = address.getAddress();
}
// PUBLIC METHODS
//---------------
/**
* Converts the string value to its <CODE> InetAddress </CODE> form.
* @return an {@link InetAddress} defined by the string value.
* @exception UnknownHostException If string value is not a legal address format.
*
* @since 1.5
*/
public InetAddress inetAddressValue() throws UnknownHostException {
return InetAddress.getByAddress(value);
}
/**
* Converts the specified binary string into a character string.
* @param bin The binary string value to convert.
* @return The character string representation.
*/
public static String BinToChar(String bin) {
char value[] = new char[bin.length()/8];
int binLength = value.length;
for (int i = 0; i < binLength; i++)
value[i] = (char)Integer.parseInt(bin.substring(8*i, 8*i+8), 2);
return new String(value);
}
/**
* Converts the specified hexadecimal string into a character string.
* @param hex The hexadecimal string value to convert.
* @return The character string representation.
*/
public static String HexToChar(String hex) {
char value[] = new char[hex.length()/2];
int hexLength = value.length;
for (int i = 0; i < hexLength; i++)
value[i] = (char)Integer.parseInt(hex.substring(2*i, 2*i+2), 16);
return new String(value);
}
/**
* Returns the bytes array of this <CODE>SnmpString</CODE>.
* @return The value.
*/
public byte[] byteValue() {
return value ;
}
/**
* Converts the string value to its array of <CODE>Bytes</CODE> form.
* @return The array of <CODE>Bytes</CODE> representation of the value.
*/
public Byte[] toByte() {
Byte[] result = new Byte[value.length] ;
for (int i = 0 ; i < value.length ; i++) {
result[i] = new Byte(value[i]) ;
}
return result ;
}
/**
* Converts the string value to its <CODE>String</CODE> form.
* @return The <CODE>String</CODE> representation of the value.
*/
public String toString() {
return new String(value) ;
}
/**
* Converts the string value to its <CODE>SnmpOid</CODE> form.
* @return The OID representation of the value.
*/
public SnmpOid toOid() {
long[] ids = new long[value.length] ;
for (int i = 0 ; i < value.length ; i++) {
ids[i] = (long)(value[i] & 0xFF) ;
}
return new SnmpOid(ids) ;
}
/**
* Extracts the string from an index OID and returns its
* value converted as an <CODE>SnmpOid</CODE>.
* @param index The index array.
* @param start The position in the index array.
* @return The OID representing the string value.
* @exception SnmpStatusException There is no string value
* available at the start position.
*/
public static SnmpOid toOid(long[] index, int start) throws SnmpStatusException {
try {
if (index[start] > Integer.MAX_VALUE) {
throw new SnmpStatusException(SnmpStatusException.noSuchName) ;
}
int strLen = (int)index[start++] ;
long[] ids = new long[strLen] ;
for (int i = 0 ; i < strLen ; i++) {
ids[i] = index[start + i] ;
}
return new SnmpOid(ids) ;
}
catch(IndexOutOfBoundsException e) {
throw new SnmpStatusException(SnmpStatusException.noSuchName) ;
}
}
/**
* Scans an index OID, skips the string value and returns the position
* of the next value.
* @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(long[] index, int start) throws SnmpStatusException {
try {
if (index[start] > Integer.MAX_VALUE) {
throw new SnmpStatusException(SnmpStatusException.noSuchName) ;
}
int strLen = (int)index[start++] ;
start += strLen ;
if (start <= index.length) {
return start ;
}
else {
throw new SnmpStatusException(SnmpStatusException.noSuchName) ;
}
}
catch(IndexOutOfBoundsException e) {
throw new SnmpStatusException(SnmpStatusException.noSuchName) ;
}
}
/**
* Appends an <CODE>SnmpOid</CODE> representing an <CODE>SnmpString</CODE> to another OID.
* @param source An OID representing an <CODE>SnmpString</CODE> value.
* @param dest Where source should be appended.
*/
public static void appendToOid(SnmpOid source, SnmpOid dest) {
dest.append(source.getLength()) ;
dest.append(source) ;
}
/**
* Performs a clone action. This provides a workaround for the
* <CODE>SnmpValue</CODE> interface.
* @return The SnmpValue clone.
*/
final synchronized public SnmpValue duplicate() {
return (SnmpValue) clone() ;
}
/**
* Clones the <CODE>SnmpString</CODE> object, making a copy of its data.
* @return The object clone.
*/
synchronized public Object clone() {
SnmpString newclone = null ;
try {
newclone = (SnmpString) super.clone() ;
newclone.value = new byte[value.length] ;
System.arraycopy(value, 0, newclone.value, 0, value.length) ;
} catch (CloneNotSupportedException e) {
throw new InternalError() ; // vm bug.
}
return newclone ;
}
/**
* Returns a textual description of the type object.
* @return ASN.1 textual description.
*/
public String getTypeName() {
return name ;
}
// VARIABLES
//----------
/**
* Name of the type.
*/
final static String name = "String" ;
/**
* This is the bytes array of the string value.
* @serial
*/
protected byte[] value = null ;
}
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