utilities.js

// NSF/NSd/utilities.js
// Description:
// "utilities.js" provides general function to be widely used.
// Copyright 2018 NOOXY. All Rights Reserved.
var fs = require('fs');

const BACKSPACE = String.fromCharCode(127);

function validateEmail(email) {
    var re = /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
    return re.test(String(email).toLowerCase());
}

function returnPassword(prompt) {
    if (prompt) {
      process.stdout.write(prompt);
    }

    var stdin = process.stdin;
    stdin.resume();
    stdin.setRawMode(true);
    stdin.resume();
    stdin.setEncoding('utf8');

    var password = '';
    stdin.on('data', function (ch) {
        ch = ch.toString('utf8');

        switch (ch) {
        case "\n":
        case "\r":
        case "\u0004":
            // They've finished typing their password
            process.stdout.write('\n');
            stdin.setRawMode(false);
            stdin.pause();
            return password;
            break;
        case "\u0003":
            // Ctrl-C
            return null;
            break;
        case BACKSPACE:
            password = password.slice(0, password.length - 1);
            process.stdout.clearLine();
            process.stdout.cursorTo(0);
            process.stdout.write(prompt);
            process.stdout.write(password.split('').map(function () {
              return '*';
            }).join(''));
            break;
        default:
            // More passsword characters
            process.stdout.write('*');
            password += ch;
            break;
        }
    });
}

let isEnglish = (string) => {
  return /^[A-Za-z0-9]*$/.test(string);
};

// read a file and return a parsed JSON obj
returnJSONfromFile = (filename) => {
  return JSON.parse(fs.readFileSync(filename, 'utf8'));;
};

String.prototype.replaceAll = function(search, replacement) {
    var target = this;
    return target.split(search).join(replacement);
};

// print the NSF LOGO
printLOGO = (version, copyright) => {
  console.log('88b 88  dP\'Yb   dP\'Yb  Yb  dP Yb  dP  TM')
  console.log('88Yb88 dP   Yb dP   Yb  YbdP   YbdP  ')
  console.log('88 Y88 Yb   dP Yb   dP  dPYb    88   ')
  console.log('88  Y8  YbodP   YbodP  dP  Yb   88   Service Framework. ')
  console.log('')
  console.log('')
  console.log('ver. '+version+'. '+copyright)
  console.log('For more information or update -> www.nooxy.tk')
  console.log('')
};

// print log with tag
tagLog = (tag, logstring) => {
  if(typeof(logstring)!='string') {
    logstring = JSON.stringify(logstring, null, 2);
  }
  let _space = 10;
  tag = tag.substring(0, _space);
  for(var i=0; i < _space-tag.length; i++) {
    if(i%2 != 1) {
      tag = tag + ' ';
    }
    else {
      tag = ' ' + tag;
    }
  }
  console.log('['+tag+'] '+logstring.replaceAll('\n', '\n['+tag+'] '));
};

// generateGUID
generateUniqueID = () => {
  return '_' + Math.random().toString(36).substr(2, 9);
};

hashString = (s) => {
  var s = 0, i, chr;
  if (s.length === 0) return hash;
  for (i = 0; i < s.length; i++) {
    chr   = s.charCodeAt(i);
    hash  = ((hash << 5) - hash) + chr;
    hash |= 0; // Convert to 32bit integer
  }
  return hash;
};

removeHTML = function(str) {
  return String(str).replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g,
    '&gt;').replace(/"/g, '&quot;');
}

function s4() {
  return Math.floor((1 + Math.random()) * 0x10000).toString(16).substring(1);
}

addDays = (date, days)=> {
  var dat = date;
  dat.setDate(dat.getDate() + days);
  return dat;
}

generateGUID = () => {
  return s4() + s4() + '-' + s4() + '-' + s4() + '-' +s4() + '-' + s4() + s4() +
   s4();
}

searchObject = (object, value)=> {
  for (let prop in object) {
    if (object.hasOwnProperty(prop)) {
      if (object[prop] === value) {
        return prop;
      }
    }
  }
};

SQLtoDate = (sqlDate) => {
  let sqlDateArr1 = sqlDate.split("-");
  let sYear = sqlDateArr1[0];
  let sMonth = (Number(sqlDateArr1[1]) - 1).toString();
  let sqlDateArr2 = sqlDateArr1[2].split(" ");
  let sDay = sqlDateArr2[0];
  let sqlDateArr3 = sqlDateArr2[1].split(":");
  let sHour = sqlDateArr3[0];
  let sMinute = sqlDateArr3[1];
  let sqlDateArr4 = sqlDateArr3[2].split(".");
  let sSecond = sqlDateArr4[0];
  let sMillisecond = sqlDateArr4[1];
  // console.log(sYear, ' ', sMonth, ' ',  sDay, ' ',  sHour, ' ',  sMinute, ' ',  sSecond, ' ',  sMillisecond);
  return new Date(sYear, sMonth, sDay, sHour, sMinute, sSecond);
}

 DatetoSQL = (JsDate) => {
  iso = JsDate.toISOString();
  return iso.slice(0, 19).replace('T', ' ');
}

module.exports = {
  validateEmail: validateEmail,
  isEnglish: isEnglish,
  returnPassword: returnPassword,
  returnJSONfromFile: returnJSONfromFile,
  printLOGO: printLOGO,
  tagLog: tagLog,
  generateUniqueID: generateUniqueID,
  hashString: hashString,
  removeHTML: removeHTML,
  generateGUID: generateGUID,
  searchObject: searchObject,
  addDays: addDays,
  DatetoSQL: DatetoSQL,
  SQLtoDate: SQLtoDate
}