string-humanize.js

/*
  Code source:
    https://github.com/jxson/string-humanize
    https://github.com/jxson/string-capitalize
 */

function capitalize(string){
  string = string || '';
  string = string.trim();

  if (string[0]) {
    string = string[0].toUpperCase() + string.substr(1).toLowerCase();
  }

  return string;
}

humanize = function humanize(string){
  string = string || '';
  string = string.toString(); // might be a number
  string = string.trim();
  string = string.replace(extname(string), '');
  string = underscore(string);
  string = string.replace(/[\W_]+/g, ' ');

  return capitalize(string);
}


function underscore(string){
  string = string || '';
  string = string.toString(); // might be a number
  string = string.trim();
  string = string.replace(/([a-z\d])([A-Z]+)/g, '$1_$2');
  string = string.replace(/[-\s]+/g, '_').toLowerCase();

  return string;
}

function extname(string){
  var index = string.lastIndexOf('.');
  var ext = string.substring(index, string.length);

  return (index === -1) ? '' : ext;
}