// Biblioteca JavaScript 
// Autor: Tulio de Melo
// Todos os direitos reservados

// Faz a validação de E-mail
function js_val_email(emailStr) 
{
	/* The following pattern is used to check if the entered e-mail address
	   fits the user@domain format.  It also is used to separate the username
	   from the domain. */
	var emailPat=/^(.+)@(.+)$/
	/* The following string represents the pattern for matching all special
	   characters.  We don't want to allow special characters in the address. 
	   These characters include ( ) < > @ , ; : \ " . [ ]    */
	var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
	/* The following string represents the range of characters allowed in a 
	   username or domainname.  It really states which chars aren't allowed. */
	var validChars="\[^\\s" + specialChars + "\]"
	/* The following pattern applies if the "user" is a quoted string (in
	   which case, there are no rules about which characters are allowed
	   and which aren't; anything goes).  E.g. "jiminy cricket"@disney.com
	   is a legal e-mail address. */
	var quotedUser="(\"[^\"]*\")"
	/* The following pattern applies for domains that are IP addresses,
	   rather than symbolic names.  E.g. joe@[123.124.233.4] is a legal
	   e-mail address. NOTE: The square brackets are required. */
	var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
	/* The following string represents an atom (basically a series of
	   non-special characters.) */
	var atom=validChars + '+'
	/* The following string represents one word in the typical username.
	   For example, in john.doe@somewhere.com, john and doe are words.
	   Basically, a word is either an atom or quoted string. */
	var word="(" + atom + "|" + quotedUser + ")"
	// The following pattern describes the structure of the user
	var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
	/* The following pattern describes the structure of a normal symbolic
	   domain, as opposed to ipDomainPat, shown above. */
	var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")
	
	
	/* Finally, let's start trying to figure out if the supplied address is
	   valid. */
	
	/* Begin with the coarse pattern to simply break up user@domain into
	   different pieces that are easy to analyze. */
	var matchArray=emailStr.match(emailPat)
	if (matchArray==null) {
	  /* Too many/few @'s or something; basically, this address doesn't
	     even fit the general mould of a valid e-mail address. */
		//alert("O endereço de Email parece estar incorreto (verifique @ e .'s)")
		return false
	}
	var user=matchArray[1]
	var domain=matchArray[2]
	
	// See if "user" is valid 
	if (user.match(userPat)==null) {
	    // user is not valid
	    //alert("O nome de usuário do email parece não ser válido.")
	    return false
	}
	
	/* if the e-mail address is at an IP address (as opposed to a symbolic
	   host name) make sure the IP address is valid. */
	var IPArray=domain.match(ipDomainPat)
	if (IPArray!=null) {
	    // this is an IP address
		  for (var i=1;i<=4;i++) {
		    if (IPArray[i]>255) {
		        //alert("O destinatário não é válido! o email não poderá ser enviado. Favor Informar Suporte Sion Tecnologia")
			return false
		    }
	    }
	    return true
	}
	
	// Domain is symbolic name
	var domainArray=domain.match(domainPat)
	if (domainArray==null) {
		//alert("O nome de domínio parece não ser válido.")
	    return false
	}
	
	/* domain name seems valid, but now make sure that it ends in a
	   three-letter word (like com, edu, gov) or a two-letter word,
	   representing country (uk, nl), and that there's a hostname preceding 
	   the domain or country. */
	
	/* Now we need to break up the domain to get a count of how many atoms
	   it consists of. */
	var atomPat=new RegExp(atom,"g")
	var domArr=domain.match(atomPat)
	var len=domArr.length
	if (domArr[domArr.length-1].length<2 || 
	    domArr[domArr.length-1].length>3) {
	   // the address must end in a two letter or three letter word.
	   //alert("O endereço de e-mail deve terminar com um domínio de 3 letras (.com, p. exemplo) ou um código de país com 2 letras (.br, p. exemplo)")
	   return false
	}
	
	// Make sure there's a host name preceding the domain.
	if (len<2) {
	   var errStr="This address is missing a hostname!"
	   //alert(errStr)
	   return false
	}
	
	// If we've gotten this far, everything's valid!
	return true;
}

function js_val_cpf( cpf )
{
	// Se o cpf vier formato, elimina a formatação
	cpf = cpf.replace(".","");
	cpf = cpf.replace("-","");

	if( cpf.length != 11 || 
		cpf == '00000000000' || cpf == '11111111111' || cpf == '22222222222' || 
		cpf == '33333333333' || cpf == '44444444444' || cpf == '55555555555' || 
		cpf == '66666666666' || cpf == '77777777777' || cpf == '88888888888' || 
		cpf == '99999999999' )	
    	return false;
	
    var dv1_informado = cpf.substring( 9, 10 );
	var dv2_informado = cpf.substring( 10, 11 );

	var somadv1 = 0;
	var somadv2 = 0;	
	
	// Determinando o primeiro dígito verificador	
	var primeira_sequencia = cpf.substring( 0, 9 );		
	
	for( var i=0; i<9; i++ )
	{			
		somadv1 = somadv1 + ( primeira_sequencia.charAt(i) * (10-i) );
	}
	
	var restodv1 = somadv1 % 11;
	
	if( restodv1 < 2 )
		dv1 = 0;
	else
		dv1 = 11 - restodv1;
	
	if( dv1 != dv1_informado )
		return false;
		
	// Determinando o segundo dígito verificador
	var segunda_sequencia  = primeira_sequencia + dv1;
	
	for( var j=0; j<10; j++ )
	{
		somadv2 = somadv2 + ( segunda_sequencia.charAt(j) * (11-j) );
	}
	
	restodv2 = somadv2 % 11;
	
	if( restodv2 < 2 )
		dv2 = 0;
	else
		dv2 = 11 - restodv2;
		
	if( dv2 != dv2_informado )	
		return false;
	
	return true;	
}

function js_val_cep( cep_verificar )
{
    exp = /^\d{5}-\d{3}$/;

    return exp.test( cep_verificar );
}