Parse space delimited address [:port] string and return array of InetSocketAddress. - Java Network

Java examples for Network:Network Address

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Description

Parse space delimited address [:port] string and return array of InetSocketAddress.

Demo Code

/*//from w w  w . j a  va  2  s.com
 * Copyright (c) 2004 by Cosylab
 *
 * The full license specifying the redistribution, modification, usage and other
 * rights and obligations is included with the distribution of this project in
 * the file "LICENSE-CAJ". If the license is not included visit Cosylab web site,
 * <http://www.cosylab.com>.
 *
 * THIS SOFTWARE IS PROVIDED AS-IS WITHOUT WARRANTY OF ANY KIND, NOT EVEN THE
 * IMPLIED WARRANTY OF MERCHANTABILITY. THE AUTHOR OF THIS SOFTWARE, ASSUMES
 * _NO_ RESPONSIBILITY FOR ANY CONSEQUENCE RESULTING FROM THE USE, MODIFICATION,
 * OR REDISTRIBUTION OF THIS SOFTWARE.
 */
//package com.java2s;

import java.net.InetSocketAddress;

import java.util.ArrayList;
import java.util.StringTokenizer;

public class Main {
    public static void main(String[] argv) throws Exception {
        String list = "java2s.com";
        int defaultPort = 2;
        System.out.println(java.util.Arrays.toString(getSocketAddressList(
                list, defaultPort)));
    }

    /**
     * Parse space delimited address[:port] string and return array of <code>InetSocketAddress</code>.  
     * @param list   space delimited address[:port] string.
     * @param defaultPort   port take if not specified.
     * @return   array of <code>InetSocketAddress</code>.
     */
    public static InetSocketAddress[] getSocketAddressList(String list,
            int defaultPort) {
        return getSocketAddressList(list, defaultPort, null);
    }

    /**
     * Parse space delimited address[:port] string and return array of <code>InetSocketAddress</code>.  
     * @param list   space delimited address[:port] string.
     * @param defaultPort   port take if not specified.
     * @param appendList    list to be appended.
     * @return   array of <code>InetSocketAddress</code>.
     */
    public static InetSocketAddress[] getSocketAddressList(String list,
            int defaultPort, InetSocketAddress[] appendList) {
        ArrayList al = new ArrayList();

        // parse string
        StringTokenizer st = new StringTokenizer(list);
        while (st.hasMoreTokens()) {
            int port = defaultPort;
            String address = st.nextToken();

            // check port
            int pos = address.indexOf(':');
            if (pos >= 0) {
                try {
                    port = Integer.parseInt(address.substring(pos + 1));
                } catch (NumberFormatException nfe) { /* noop */
                }

                address = address.substring(0, pos);
            }

            // add parsed address
            al.add(new InetSocketAddress(address, port));
        }

        // copy to array
        int appendSize = (appendList == null) ? 0 : appendList.length;
        InetSocketAddress[] isar = new InetSocketAddress[al.size()
                + appendSize];
        al.toArray(isar);
        if (appendSize > 0)
            System.arraycopy(appendList, 0, isar, al.size(), appendSize);
        return isar;
    }
}

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