/**
 * Copyright  2001-2013 Avocent Corporation. All rights reserved.
 *
 * @file  LoginCheck.js
 * The file provides check routines for login purpose.
 */

/**
 * Checks whether the text contains only printable characters.
 *
 * @param    strInput - the text to be validated.
 *
 * @return   true  - positive.
 *           false - negative.
 * @note     Printable characters are US-ASCII codes 33-126.
 */
function isPrintableASCII(strInput)
{
  var iPrintableStart = 33;
  var iPrintableEnd   = 126;

  if ((strInput == null) ||
      (typeof strInput != "string"))
  {
    return (false);
  }

  var strText = new String(strInput);

  for (var i = 0; i < strText.length; i++)
  {
    if ((strText.charCodeAt(i) < iPrintableStart) ||
        (strText.charCodeAt(i) > iPrintableEnd))
    {
      return (false);
    }
  }

  return (true);
}