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vendor/egulias/email-validator/EmailValidator/Parser/LocalPart.php

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+<?php
+
+namespace Egulias\EmailValidator\Parser;
+
+use Egulias\EmailValidator\Exception\DotAtEnd;
+use Egulias\EmailValidator\Exception\DotAtStart;
+use Egulias\EmailValidator\EmailLexer;
+use Egulias\EmailValidator\EmailValidator;
+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;
+        $openedParenthesis = 0;
+
+        while ($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();
+                } else {
+                    $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();
+            }
+
+            $this->lexer->moveNext();
+        }
+
+        $prev = $this->lexer->getPrevious();
+        if (strlen($prev['value']) > LocalTooLong::LOCAL_PART_LENGTH) {
+            $this->warnings[LocalTooLong::CODE] = new LocalTooLong();
+        }
+    }
+
+    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 $parseAgain;
+    }
+
+    protected function isInvalidToken($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();
+        }
+    }
+}