extract_latest.js

const RDURL = 'https://public.dhe.ibm.com/ibmdl/export/pub/software/websphere/messaging/mqdev/redist/'
const https = require('https');
const cheerio = require('cheerio');

var V = 0
var R = 0
var M = 0
var F = 0

const request = https.get(RDURL,
    (res) => {
        console.log(res.statusCode);
        res.on('data', (d) => {
            console.log(d);
            var $ = cheerio.load(d);
            console.log($('html').text())
            $('a').each(function(){
                var match = $(this).attr('href').match('([0-9]+)\.([0-9]+)\.([0-9]+)\.([0-9]+)-IBM-MQC-Redist.*\.gz$')
                if (match) {
                    if (parseInt(match[1]) == V){
                        if (parseInt(match[2]) == R){
                            if (parseInt(match[3]) == M){
                                if (parseInt(match[1]) > F) {
                                    F = match[4]
                                }
                            }
                            else {
                                if (parseInt(match[3]) > M) {
                                    M = match[3]
                                    F = match[4]
                                }
                            }
                        }
                        else {
                            if (parseInt(match[2]) > R) {
                                R = match[2]
                                M = match[3]
                                F = match[4]
                            }
                        }
                    }
                    else {
                        if (parseInt(match[1]) > V) {
                            V = match[1]
                            R = match[2]
                            M = match[3]
                            F = match[4]
                        }
                    }
                }
            })
        })
        res.on('end', () => {
            console.log(V, R, M, F)
        })
    }
).end()