Viewing file:  LocalPart.php (5.28 KB) -rw-r--r--
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<?php
namespace Egulias\EmailValidator\Parser;
use Egulias\EmailValidator\EmailLexer;
use Egulias\EmailValidator\Result\Result;
use Egulias\EmailValidator\Result\ValidEmail;
use Egulias\EmailValidator\Result\InvalidEmail;
use Egulias\EmailValidator\Warning\LocalTooLong;
use Egulias\EmailValidator\Result\Reason\DotAtEnd;
use Egulias\EmailValidator\Result\Reason\DotAtStart;
use Egulias\EmailValidator\Result\Reason\ConsecutiveDot;
use Egulias\EmailValidator\Result\Reason\ExpectingATEXT;
use Egulias\EmailValidator\Parser\CommentStrategy\LocalComment;
class LocalPart extends PartParser
{
public const INVALID_TOKENS = [
EmailLexer::S_COMMA => EmailLexer::S_COMMA,
EmailLexer::S_CLOSEBRACKET => EmailLexer::S_CLOSEBRACKET,
EmailLexer::S_OPENBRACKET => EmailLexer::S_OPENBRACKET,
EmailLexer::S_GREATERTHAN => EmailLexer::S_GREATERTHAN,
EmailLexer::S_LOWERTHAN => EmailLexer::S_LOWERTHAN,
EmailLexer::S_COLON => EmailLexer::S_COLON,
EmailLexer::S_SEMICOLON => EmailLexer::S_SEMICOLON,
EmailLexer::INVALID => EmailLexer::INVALID
];
/**
* @var string
*/
private $localPart = '';
public function parse(): Result
{
$this->lexer->startRecording();
while (!$this->lexer->current->isA(EmailLexer::S_AT) && !$this->lexer->current->isA(EmailLexer::S_EMPTY)) {
if ($this->hasDotAtStart()) {
return new InvalidEmail(new DotAtStart(), $this->lexer->current->value);
}
if ($this->lexer->current->isA(EmailLexer::S_DQUOTE)) {
$dquoteParsingResult = $this->parseDoubleQuote();
//Invalid double quote parsing
if ($dquoteParsingResult->isInvalid()) {
return $dquoteParsingResult;
}
}
if (
$this->lexer->current->isA(EmailLexer::S_OPENPARENTHESIS) ||
$this->lexer->current->isA(EmailLexer::S_CLOSEPARENTHESIS)
) {
$commentsResult = $this->parseComments();
//Invalid comment parsing
if ($commentsResult->isInvalid()) {
return $commentsResult;
}
}
if ($this->lexer->current->isA(EmailLexer::S_DOT) && $this->lexer->isNextToken(EmailLexer::S_DOT)) {
return new InvalidEmail(new ConsecutiveDot(), $this->lexer->current->value);
}
if (
$this->lexer->current->isA(EmailLexer::S_DOT) &&
$this->lexer->isNextToken(EmailLexer::S_AT)
) {
return new InvalidEmail(new DotAtEnd(), $this->lexer->current->value);
}
$resultEscaping = $this->validateEscaping();
if ($resultEscaping->isInvalid()) {
return $resultEscaping;
}
$resultToken = $this->validateTokens(false);
if ($resultToken->isInvalid()) {
return $resultToken;
}
$resultFWS = $this->parseLocalFWS();
if ($resultFWS->isInvalid()) {
return $resultFWS;
}
$this->lexer->moveNext();
}
$this->lexer->stopRecording();
$this->localPart = rtrim($this->lexer->getAccumulatedValues(), '@');
if (strlen($this->localPart) > LocalTooLong::LOCAL_PART_LENGTH) {
$this->warnings[LocalTooLong::CODE] = new LocalTooLong();
}
return new ValidEmail();
}
protected function validateTokens(bool $hasComments): Result
{
if (isset(self::INVALID_TOKENS[$this->lexer->current->type])) {
return new InvalidEmail(new ExpectingATEXT('Invalid token found'), $this->lexer->current->value);
}
return new ValidEmail();
}
public function localPart(): string
{
return $this->localPart;
}
private function parseLocalFWS(): Result
{
$foldingWS = new FoldingWhiteSpace($this->lexer);
$resultFWS = $foldingWS->parse();
if ($resultFWS->isValid()) {
$this->warnings = [...$this->warnings, ...$foldingWS->getWarnings()];
}
return $resultFWS;
}
private function hasDotAtStart(): bool
{
return $this->lexer->current->isA(EmailLexer::S_DOT) && $this->lexer->getPrevious()->isA(EmailLexer::S_EMPTY);
}
private function parseDoubleQuote(): Result
{
$dquoteParser = new DoubleQuote($this->lexer);
$parseAgain = $dquoteParser->parse();
$this->warnings = [...$this->warnings, ...$dquoteParser->getWarnings()];
return $parseAgain;
}
protected function parseComments(): Result
{
$commentParser = new Comment($this->lexer, new LocalComment());
$result = $commentParser->parse();
$this->warnings = [...$this->warnings, ...$commentParser->getWarnings()];
return $result;
}
private function validateEscaping(): Result
{
//Backslash found
if (!$this->lexer->current->isA(EmailLexer::S_BACKSLASH)) {
return new ValidEmail();
}
if ($this->lexer->isNextToken(EmailLexer::GENERIC)) {
return new InvalidEmail(new ExpectingATEXT('Found ATOM after escaping'), $this->lexer->current->value);
}
return new ValidEmail();
}
}
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