llearn/src/helper_parameter.js

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// console.log("Starting helper_parameter.js...");
// helper_parameter.js
// Purpose: The purpose of this....
// Date Created: 6/2/2018
// Created by : Perez Lamed van Niekerk
// ------------------------------------------------------
/*jshint esversion: 6 */
const _log = console.log;
const _JSONstr = (object) => JSON.stringify(object, undefined, 2);
const _logJSON = (object) => console.log(_JSONstr(object));
// ------------------------------------------------------

const _chalk = require('chalk');  // npm i chalk -s
var _logBlue = (msg) => _log(_chalk.blue.bold(msg));

const _io = require('./helper_io');
const _helper = require('./helper');
const _ = require("lodash");  // npm install lodash --save
const _expect = require('expect');
const _larray = require('larray');

function parametersParse (code) {


    let parms = [];
    if (code.includes('$')) {
        parms = code.split('$');
        parms[0] = ''; // remove first part of the template
        //_log(parms);
        /* filter out false positives */
        parms = _.filter(parms, (item) => {
            /* If these chars is in the parameter -> filter it out */
            var error = item.includesAny(' ', '{', ';', '/', ':', '.', '\r\n');
            if (error === false && item.length <= 1) error = true;
            if (error === false) return item;
        });
        // _log({parms});
        parms = _.uniq(parms);
        // _log({parms});
        if (parms.length > 2) {
            throw new Error("Max of two parameters supported! [" + parms + "]"); }
    }
    return parms;
};

/* Parse the template, remove $END$ and identify parameters */
function parametersGet(code){
    return new Promise((resolve, reject) => {
        let parms = parametersParse(code);
        if (parms.length === 0) {
            /* There is no parameters */
            resolve('');
        } else {
            /* Get parameter input from the user */
            _logBlue(`\n${code}\n`);

            /* readLine() */
            let QA = parms.replaceAll('_', ' ');
            _io.IO().readLine(`Please enter '${QA[0]}':`)
                .then((result) => {
                    if (parms.length === 2) {
                        /* readLine() */
                        _io.IO().readLine(`Please enter '${QA[1]}':`)
                            .then((result2) => {
                                resolve({parameter1: parms[0], keyword1: result,
                                         parameter2: parms[1], keyword2: result2});
                            }).catch((err) => resolve(''))
                    } else {
                        resolve({parameter1: parms[0], keyword1: result});
                    }
                }).catch((err) => resolve(''));
        }
    });
};


// Exports --------------------------
module.exports = {parametersParse, parametersGet};