function validator() { }

var special_char_regex = /[^a-z0-9!#$%&*+\-.\/=?@\[\]^_`{|}~]/i;

validator.exists = function (validation)
{
  if (typeof(validator[validation]) == 'function') return true;

  return false;
}


validator.get = function (validation)
{
  if (validator.exists(validation)) return validator[validation];

  return function () { return false; };
}


validator.validate_username = function (value)
{
  if (/^[a-z\.\ \-]+$/i.test(value))
  {
    return true;
  }

  return false;
}


validator.validate_sign_in_code = function (value)
{
  if (/^%[a-fA-F0-9]{32}(\?|_)$/.test(value))
  {
    return true;
  }

  return false;
}


validator.validate_kcaptcha = function (value)
{
  if (/^[23456789abcdeghkmnpqsuvxyz]{5}$/.test(value))
  {
    return true;
  } 

  return false;
}


validator.validate_email = function (value)
{
  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(value);
}


validator.contains_upppercase = function(value)
{
  if (/[A-Z]/.test(value)) return true;

  return false;
}


validator.contains_lowercase = function(value)
{
  if (/[a-z]/.test(value)) return true;

  return false;
}


validator.contains_number = function(value)
{
  if (/[\d]/.test(value)) return true;

  return false;
}


validator.length_between = function(value, min, max)
{
  value = new String(value);

  if (value.length >= min && value.length <= max) return true;

  return false;
}


validator.contains_special_char = function(value)
{     
  if (/[^a-z0-9!#$%&*+\-.\/=?@\[\]^_`{|}~]/i.test(value)) return false;
  if (/[^a-z0-9]/i.test(value)) return true;  

  return false;
}


validator.match = function(value, value_or_values)
{
  values = typeof(value_or_values) == 'string'? [value_or_values]: value_or_values;
  value  = value.toLowerCase().trim();

  for (i in values)
  {
    if (values[i].toLowerCase().trim() == value) return true;
  }

  return false;
}


validator.not_match = function(value, values)
{
  return !validator.match(value, values);
}


validator.match_input = function(value, input_id) 
{
  var input_value = document.getElementById(input_id).value;

  if (input_value && value == input_value) return true;

  return false;
}


validator.validate_password = function(value)
{
  var result = special_char_regex.exec(value);
  if (result !== null) return result[0];
  return true;
}