format.js

(function(){
  var Format = {
    defaults: {
      precision: 3,
      delimiter: ',',
      separator: ' ',
      fixed_length: false,
      fixed_delimiter: " ",
      precision_unit: null,
      currency: "Kč"
    },
    number: function format_number(value, options) {
      var number = parseFloat(value);
    
      var opts = $.extend({}, Format.defaults, options);
      var base = 10; // # Yeah, we... pretty much assume that the base is ten.

      if(opts['precision'] || opts['precision'] == 0) {
        var q = Math.pow(base, opts['precision']);
        number = number * q;
        number = parseFloat(Math.round(number));
        number = number / q;
      }

      if(opts['precision_unit']) {
        number = number / opts['precision_unit'];
        number = parseFloat(Math.round(number));
        number = number * opts['precision_unit'];
      }

      parts = number.toString().split('.')
      parts[0] = parts[0].replace(/(\d)(?=(\d{3})+(?!\d))/gi, "$1" + opts['separator']);

      if(parts[parts.length-1] == '0') {
        if(opts['fixed_length']) {
          return parts[0] + opts['fixed_delimiter']*(opts['precision']+opts['delimiter'].length);
        } else {
          return parts[0];
        }
      } else {
        if(opts['fixed_length']) {
          if(parts.length == 1 && opts['prefix']) {
            var number = parts.join();
            while(number.length < opts['precision']) {
              number = opts['prefix'] + '' + number;
            }
            return number;
          } else {
            return parts.join(opts['delimiter']) + opts['fixed_delimiter']*(opts['precision'] - parts[parts.length-1].length); //FIXME: javascript cant do number * string
          }
        } else {
          return parts.join(opts['delimiter']);
        }
      }
    },
    currency: function(value, options) {
      var opts = $.extend({}, Format.defaults, options);
      return [Format.number(value, options), opts.currency].join(opts.separator);
    },
    time: function(time, hours, minutes, seconds) {
      hours = (typeof hours == 'undefined') ? true : hours;
      minutes = (typeof minutes == 'undefined') ? true : minutes;
      seconds = (typeof seconds == 'undefined') ? false : seconds;
      var parts = [];
      if(hours)
        parts.push(Math.floor(time/3600));
      if(minutes)
        parts.push(Math.floor((time%3600)/60));
      if(seconds)
        parts.push(Math.floor(time%60));
      return $(parts).map(function(){ return window.Format.number(this, {prefix: '0', precision: 2, fixed_length: true});}).get().join(":");
    }
  }
  window.Format = Format;
}());