Viewing file:  FoldingWhiteSpace.php (2.73 KB) -rw-r--r--
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<?php
namespace Egulias\EmailValidator\Parser;
use Egulias\EmailValidator\EmailLexer;
use Egulias\EmailValidator\Warning\CFWSNearAt;
use Egulias\EmailValidator\Result\InvalidEmail;
use Egulias\EmailValidator\Warning\CFWSWithFWS;
use Egulias\EmailValidator\Result\Reason\CRNoLF;
use Egulias\EmailValidator\Result\Reason\AtextAfterCFWS;
use Egulias\EmailValidator\Result\Reason\CRLFAtTheEnd;
use Egulias\EmailValidator\Result\Reason\CRLFX2;
use Egulias\EmailValidator\Result\Reason\ExpectingCTEXT;
use Egulias\EmailValidator\Result\Result;
use Egulias\EmailValidator\Result\ValidEmail;
class FoldingWhiteSpace extends PartParser
{
public const FWS_TYPES = [
EmailLexer::S_SP,
EmailLexer::S_HTAB,
EmailLexer::S_CR,
EmailLexer::S_LF,
EmailLexer::CRLF
];
public function parse(): Result
{
if (!$this->isFWS()) {
return new ValidEmail();
}
$previous = $this->lexer->getPrevious();
$resultCRLF = $this->checkCRLFInFWS();
if ($resultCRLF->isInvalid()) {
return $resultCRLF;
}
if ($this->lexer->current->isA(EmailLexer::S_CR)) {
return new InvalidEmail(new CRNoLF(), $this->lexer->current->value);
}
if ($this->lexer->isNextToken(EmailLexer::GENERIC) && !$previous->isA(EmailLexer::S_AT)) {
return new InvalidEmail(new AtextAfterCFWS(), $this->lexer->current->value);
}
if ($this->lexer->current->isA(EmailLexer::S_LF) || $this->lexer->current->isA(EmailLexer::C_NUL)) {
return new InvalidEmail(new ExpectingCTEXT(), $this->lexer->current->value);
}
if ($this->lexer->isNextToken(EmailLexer::S_AT) || $previous->isA(EmailLexer::S_AT)) {
$this->warnings[CFWSNearAt::CODE] = new CFWSNearAt();
} else {
$this->warnings[CFWSWithFWS::CODE] = new CFWSWithFWS();
}
return new ValidEmail();
}
protected function checkCRLFInFWS(): Result
{
if (!$this->lexer->current->isA(EmailLexer::CRLF)) {
return new ValidEmail();
}
if (!$this->lexer->isNextTokenAny(array(EmailLexer::S_SP, EmailLexer::S_HTAB))) {
return new InvalidEmail(new CRLFX2(), $this->lexer->current->value);
}
//this has no coverage. Condition is repeated from above one
if (!$this->lexer->isNextTokenAny(array(EmailLexer::S_SP, EmailLexer::S_HTAB))) {
return new InvalidEmail(new CRLFAtTheEnd(), $this->lexer->current->value);
}
return new ValidEmail();
}
protected function isFWS(): bool
{
if ($this->escaped()) {
return false;
}
return in_array($this->lexer->current->type, self::FWS_TYPES);
}
}
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