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<?php
namespace Egulias\EmailValidator;
use Doctrine\Common\Lexer\AbstractLexer;
class EmailLexer extends AbstractLexer
{
//ASCII values
const C_DEL = 127;
const C_NUL = 0;
const S_AT = 64;
const S_BACKSLASH = 92;
const S_DOT = 46;
const S_DQUOTE = 34;
const S_OPENPARENTHESIS = 49;
const S_CLOSEPARENTHESIS = 261;
const S_OPENBRACKET = 262;
const S_CLOSEBRACKET = 263;
const S_HYPHEN = 264;
const S_COLON = 265;
const S_DOUBLECOLON = 266;
const S_SP = 267;
const S_HTAB = 268;
const S_CR = 269;
const S_LF = 270;
const S_IPV6TAG = 271;
const S_LOWERTHAN = 272;
const S_GREATERTHAN = 273;
const S_COMMA = 274;
const S_SEMICOLON = 275;
const S_OPENQBRACKET = 276;
const S_CLOSEQBRACKET = 277;
const S_SLASH = 278;
const S_EMPTY = null;
const GENERIC = 300;
const CRLF = 301;
const INVALID = 302;
const ASCII_INVALID_FROM = 127;
const ASCII_INVALID_TO = 199;
/**
* US-ASCII visible characters not valid for atext (@link http://tools.ietf.org/html/rfc5322#section-3.2.3)
*
* @var array
*/
protected $charValue = array(
'(' => self::S_OPENPARENTHESIS,
')' => self::S_CLOSEPARENTHESIS,
'<' => self::S_LOWERTHAN,
'>' => self::S_GREATERTHAN,
'[' => self::S_OPENBRACKET,
']' => self::S_CLOSEBRACKET,
':' => self::S_COLON,
';' => self::S_SEMICOLON,
'@' => self::S_AT,
'\\' => self::S_BACKSLASH,
'/' => self::S_SLASH,
',' => self::S_COMMA,
'.' => self::S_DOT,
'"' => self::S_DQUOTE,
'-' => self::S_HYPHEN,
'::' => self::S_DOUBLECOLON,
' ' => self::S_SP,
"\t" => self::S_HTAB,
"\r" => self::S_CR,
"\n" => self::S_LF,
"\r\n" => self::CRLF,
'IPv6' => self::S_IPV6TAG,
'{' => self::S_OPENQBRACKET,
'}' => self::S_CLOSEQBRACKET,
'' => self::S_EMPTY,
'\0' => self::C_NUL,
);
protected $hasInvalidTokens = false;
protected $previous;
public function reset()
{
$this->hasInvalidTokens = false;
parent::reset();
}
public function hasInvalidTokens()
{
return $this->hasInvalidTokens;
}
/**
* @param $type
* @throws \UnexpectedValueException
* @return boolean
*/
public function find($type)
{
$search = clone $this;
$search->skipUntil($type);
if (!$search->lookahead) {
throw new \UnexpectedValueException($type . ' not found');
}
return true;
}
/**
* getPrevious
*
* @return array token
*/
public function getPrevious()
{
return $this->previous;
}
/**
* moveNext
*
* @return boolean
*/
public function moveNext()
{
$this->previous = $this->token;
return parent::moveNext();
}
/**
* Lexical catchable patterns.
*
* @return string[]
*/
protected function getCatchablePatterns()
{
return array(
'[a-zA-Z_]+[46]?', //ASCII and domain literal
'[^\x00-\x7F]', //UTF-8
'[0-9]+',
'\r\n',
'::',
'\s+?',
'.',
);
}
/**
* Lexical non-catchable patterns.
*
* @return string[]
*/
protected function getNonCatchablePatterns()
{
return array('[\xA0-\xff]+');
}
/**
* Retrieve token type. Also processes the token value if necessary.
*
* @param string $value
* @throws \InvalidArgumentException
* @return integer
*/
protected function getType(&$value)
{
if ($this->isNullType($value)) {
return self::C_NUL;
}
if ($this->isValid($value)) {
return $this->charValue[$value];
}
if ($this->isUTF8Invalid($value)) {
$this->hasInvalidTokens = true;
return self::INVALID;
}
return self::GENERIC;
}
protected function isValid($value)
{
if (isset($this->charValue[$value])) {
return true;
}
return false;
}
/**
* @param $value
* @return bool
*/
protected function isNullType($value)
{
if ($value === "\0") {
return true;
}
return false;
}
/**
* @param $value
* @return bool
*/
protected function isUTF8Invalid($value)
{
if (preg_match('/\p{Cc}+/u', $value)) {
return true;
}
return false;
}
protected function getModifiers()
{
return 'iu';
}
}
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