<?php
namespace Egulias\EmailValidator\Parser;
use Egulias\EmailValidator\Exception\DotAtEnd;
use Egulias\EmailValidator\Exception\DotAtStart;
use Egulias\EmailValidator\EmailLexer;
use Egulias\EmailValidator\Exception\ExpectingAT;
use Egulias\EmailValidator\Exception\ExpectingATEXT;
use Egulias\EmailValidator\Exception\UnclosedQuotedString;
use Egulias\EmailValidator\Exception\UnopenedComment;
use Egulias\EmailValidator\Warning\CFWSWithFWS;
use Egulias\EmailValidator\Warning\LocalTooLong;
class LocalPart extends Parser
{
public function parse($localPart)
{
$parseDQuote = true;
$closingQuote = false;
$openedParenthesis = 0;
$totalLength = 0;
while ($this->lexer->token['type'] !== EmailLexer::S_AT && null !== $this->lexer->token['type']) {
if ($this->lexer->token['type'] === EmailLexer::S_DOT && null === $this->lexer->getPrevious()['type']) {
throw new DotAtStart();
}
$closingQuote = $this->checkDQUOTE($closingQuote);
if ($closingQuote && $parseDQuote) {
$parseDQuote = $this->parseDoubleQuote();
}
if ($this->lexer->token['type'] === EmailLexer::S_OPENPARENTHESIS) {
$this->parseComments();
$openedParenthesis += $this->getOpenedParenthesis();
}
if ($this->lexer->token['type'] === EmailLexer::S_CLOSEPARENTHESIS) {
if ($openedParenthesis === 0) {
throw new UnopenedComment();
}
$openedParenthesis--;
}
$this->checkConsecutiveDots();
if ($this->lexer->token['type'] === EmailLexer::S_DOT &&
$this->lexer->isNextToken(EmailLexer::S_AT)
) {
throw new DotAtEnd();
}
$this->warnEscaping();
$this->isInvalidToken($this->lexer->token, $closingQuote);
if ($this->isFWS()) {
$this->parseFWS();
}
$totalLength += strlen($this->lexer->token['value']);
$this->lexer->moveNext();
}
if ($totalLength > LocalTooLong::LOCAL_PART_LENGTH) {
$this->warnings[LocalTooLong::CODE] = new LocalTooLong();
}
}
/**
* @return bool
*/
protected function parseDoubleQuote()
{
$parseAgain = true;
$special = array(
EmailLexer::S_CR => true,
EmailLexer::S_HTAB => true,
EmailLexer::S_LF => true
);
$invalid = array(
EmailLexer::C_NUL => true,
EmailLexer::S_HTAB => true,
EmailLexer::S_CR => true,
EmailLexer::S_LF => true
);
$setSpecialsWarning = true;
$this->lexer->moveNext();
while ($this->lexer->token['type'] !== EmailLexer::S_DQUOTE && null !== $this->lexer->token['type']) {
$parseAgain = false;
if (isset($special[$this->lexer->token['type']]) && $setSpecialsWarning) {
$this->warnings[CFWSWithFWS::CODE] = new CFWSWithFWS();
$setSpecialsWarning = false;
}
if ($this->lexer->token['type'] === EmailLexer::S_BACKSLASH && $this->lexer->isNextToken(EmailLexer::S_DQUOTE)) {
$this->lexer->moveNext();
}
$this->lexer->moveNext();
if (!$this->escaped() && isset($invalid[$this->lexer->token['type']])) {
throw new ExpectingATEXT();
}
}
$prev = $this->lexer->getPrevious();
if ($prev['type'] === EmailLexer::S_BACKSLASH) {
if (!$this->checkDQUOTE(false)) {
throw new UnclosedQuotedString();
}
}
if (!$this->lexer->isNextToken(EmailLexer::S_AT) && $prev['type'] !== EmailLexer::S_BACKSLASH) {
throw new ExpectingAT();
}
return $parseAgain;
}
/**
* @param bool $closingQuote
*/
protected function isInvalidToken(array $token, $closingQuote)
{
$forbidden = array(
EmailLexer::S_COMMA,
EmailLexer::S_CLOSEBRACKET,
EmailLexer::S_OPENBRACKET,
EmailLexer::S_GREATERTHAN,
EmailLexer::S_LOWERTHAN,
EmailLexer::S_COLON,
EmailLexer::S_SEMICOLON,
EmailLexer::INVALID
);
if (in_array($token['type'], $forbidden) && !$closingQuote) {
throw new ExpectingATEXT();
}
}
}