progress-bar-sample.js

var clc = require('cli-color');

//// cli-color progress bar

function make_bar(t,cu){
  var ret = [];
  var s = 10; //step
  var c = cu/s;
  var r = s-c;
  for(var i=0; i<c; i++){ ret.push(clc.white('|')) }
  for(var j=0; j<r; j++){ ret.push('*') }
  return ret.join('')
};

function make_arrow(t,cu){
  var  ret = [];
  var s = 10; //step
  var c = cu/s;
  var r = s-c;
  for(var i=0; i<c-1; i++){ ret.push(clc.white('-')) }
  ret.push('>');
  for(var j=0; j<r; j++){ ret.push(' ') }
  return ret.join('')
};

function make_arrow_(t,cu,hd,tl){
  var  ret = [];
  var s = 10; //step
  var c = cu/s;
  var r = s-c;
  for(var i=0; i<c-1; i++){ ret.push(tl) }
  ret.push(hd);
  for(var j=0; j<r; j++){ ret.push(' ') }
  
  return ret.reverse().join('')
};

(function c(t,x){
  var h = clc.green('[Status]: ');
  
  // pattern 1
  console.log([
    clc.reset,
    h,
    '[', make_bar(t,x),']',
    ': ',x.toString(),'%'
  ].join(''));

  // pattern 2
  console.log([
    h,
    (function(_x){
      return (_x/10%4===0)? '-' : (_x/10%4===1)? "\\" : (_x/10%4===2)? '|' : '/';
    })(x),
    ' (',x.toString(),'% completed)'
  ].join(''));

  // pattern 3
  console.log([
    h,
    '[start] ',
    make_arrow(t,x),
    ' [goal]'
  ].join(''));

  // pattern 4
  console.log([
    h,
    "\uD83C\uDFC1",
    make_arrow_(t,x,"\uD83C\uDFC3","\uD83D\uDCA8"),
    ' (',x.toString(),'% completed)'
  ].join(''));

  if(x===t){
    return false
  }else{
    setTimeout(c,300,t,x+10);
  }
})(100,0);