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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 String.
This API is a Sun Microsystems internal API  and is subject
to change without notice.
/**
 * 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 SnmpStringFixed from the specified bytes array.
Params:
v – The bytes composing the fixed-string value./**
     * 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 SnmpStringFixed with the specified Bytes array.
Params:
v – The Bytes composing the fixed-string value./**
     * 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 SnmpStringFixed from the specified String value.
Params:
v – The initialization value./**
     * 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 SnmpStringFixed from the specified bytes array
with the specified length.
Params:
l – The length of the fixed-string.
v – The bytes composing the fixed-string value.
Throws:
IllegalArgumentException – Either the length or the byte array is not valid./**
     * 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 SnmpStringFixed from the specified Bytes array
with the specified length.
Params:
l – The length of the fixed-string.
v – The Bytes composing the fixed-string value.
Throws:
IllegalArgumentException – Either the length or the Byte array is not valid./**
     * 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 SnmpStringFixed from the specified String
with the specified length.
Params:
l – The length of the fixed-string.
s – The String composing the fixed-string value.
Throws:
IllegalArgumentException – Either the length or the String is not valid./**
     * 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 SnmpOid.
Params:
l – The number of successive array elements to be retreived
in order to construct the OID.
These elements are retreived starting at the start position.
index – The index array.
start – The position in the index array.
Throws:
SnmpStatusException – There is no string value
available at the start position.
Returns:
The OID representing the fixed-string value./**
     * 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.
Params:
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 start position.
index – The index array.
start – The position in the index array.
Throws:
SnmpStatusException – There is no string value
available at the start position.
Returns:
The position of the next value./**
     * 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 SnmpOid representing an SnmpStringFixed to another OID.
Params:
l – Unused.
source – An OID representing an SnmpStringFixed value.
dest – Where source should be appended./**
     * 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) ;
    }
}