Selenium CSV File Reader Plugin (https://medium.com/@kcmueller/browser-task-automation-with-firefox-and-csv-files-3a94a49c75b8)

CSVRead_Selenium-IDE.js

    // global array
    array = new Array();
        Selenium.prototype.doStoreCellValue = function(variableName,cellPosition)
    {    
        var xy = cellPosition.split(",");
        var x = xy[0] - 1;
        var y = xy[1] - 1;

        var value = array[x][y];
        storedVars[variableName] = value;

    }

    // ================================================================================
    Selenium.prototype.doReadCSV = function(xmlpath)
    {           
        var filedata = null;
        loader = new FileReader();
        var xmlHttpReq = loader.getIncludeDocumentBySynchronRequest(xmlpath);
        LOG.info("Reading from: " + xmlpath);
        filedata = xmlHttpReq.responseText; //CSV Doc data
        array = CSVToArray (filedata);
            
    }
    // ==================== File Reader ====================


    function FileReader() {}

    FileReader.prototype.getIncludeDocumentBySynchronRequest = function(includeUrl) {
        
        var requester = this.newXMLHttpRequest();
        if (!requester) {
            throw new Error("XMLHttp requester object not initialized");
        }
        requester.open("GET", includeUrl, false); // synchron mode ! (we don't want selenium to go ahead)
        try {
            requester.send(null);
        } catch(e) {
          throw new Error("Error while fetching includeUrl '" + includeUrl + "' details: " + e);
        }
        if ( requester.status != 200 && requester.status !== 0 ) {
            throw new Error("Error while fetching " + includeUrl + " server response has status = " + requester.status + ", " + requester.statusText );
        }
        return requester;
    };

    FileReader.prototype.newXMLHttpRequest = function() {
        var requester = 0;
        var exception = '';
        try {
            // for IE/ActiveX
            if(window.ActiveXObject) {
                try {
                    requester = new ActiveXObject("Msxml2.XMLHTTP");
                }
                catch(e) {
                    requester = new ActiveXObject("Microsoft.XMLHTTP");
                }
            }
            // Native XMLHttp
            else if(window.XMLHttpRequest) {
                requester = new XMLHttpRequest();
            }
        }
        catch(e) {
            throw new Error("Your browser has to support XMLHttpRequest in order to use include \n" + e);
        }
        return requester;
    };

//==============CSV to Array ===================

    function CSVToArray( strData, strDelimiter ){
        strDelimiter = (strDelimiter || ",");
        var objPattern = new RegExp(
            (
                "(\\" + strDelimiter + "|\\r?\\n|\\r|^)" +
                "(?:\"([^\"]*(?:\"\"[^\"]*)*)\"|" +
                "([^\"\\" + strDelimiter + "\\r\\n]*))"
            ),
            "gi"
            );
        var arrData = [[]];
        var arrMatches = null;
        while (arrMatches = objPattern.exec( strData )){
            var strMatchedDelimiter = arrMatches[ 1 ];
            if (
                strMatchedDelimiter.length &&
                strMatchedDelimiter !== strDelimiter
                ){
                arrData.push( [] );
            }

            var strMatchedValue;
            if (arrMatches[ 2 ]){

                strMatchedValue = arrMatches[ 2 ].replace(
                    new RegExp( "\"\"", "g" ),
                    "\""
                    );

            } else {
                strMatchedValue = arrMatches[ 3 ];
            }
            arrData[ arrData.length - 1 ].push( strMatchedValue );
        }
        return( arrData );
    }