node greping

greper.js

var exec = require('child_process').exec;
var httpClient = require('request');
var _ = require('underscore');
var fs = require('fs');

var download = function (uri, filename, onDownloadComplete) {
    httpClient.head(uri, function (err, res, body) {
        httpClient(uri)
            .pipe(fs.createWriteStream("./razunaImages/" + filename))
            .on('close', onDownloadComplete);
    });
};


exec("grep -r razuna .", function (err, stdout, stderr) {
    var url_matches = stdout.match(/(https|http):\/\/\w\d\.\w{9}\.\w{2,3}\/razuna-server-tui(\/[\w\d%]+)+[\w\d_%]+\.\w+\?(([\w\d%]+=)[%\w\d]+&*)+/g);
    _.chain(url_matches)
        //.uniq()
        .forEach(function (url, index, array) {
            var match = url.match(/\/img\/[A-Z0-9]+\/([\d\w\W]+)\?/);
            var imageName = match[1];
            console.log("Queued ", imageName, "for downloading....");
            download(url, imageName, function(){ console.log(imageName, '....downoad complete'); });
        });
});